For New Technology Network
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corporation
Ball and Roller Bearings
CAT. NO.
2202-@/E
Technical Data
A-
5
Deep Groove Ball Bearings
B-
5
Miniature and Extra Small Bearings
B- 29
Angular Contact Ball Bearings
B- 41
Self-Aligning Ball Bearings
B- 77
Cylindrical Roller Bearings
B- 89
Tapered Roller Bearings
B-131
Spherical Roller Bearings
B-229
Thrust Bearings
B-265
Locknuts, Lockwashers & Lockplates
C-
1
Catalog List & Appendix Table
D-
1
Warranty NTN warrants, to the original purchaser only, that the delivered product which is the subject of this sale (a) will conform to drawings and specifications mutually established in writing as applicable to the contract, and (b) be free from defects in material or fabrication. The duration of this warranty is one year from date of delivery. If the buyer discovers within this period a failure of the product to conform to drawings or specifications, or a defect in material or fabrication, it must promptly notify NTN in writing. In no event shall such notification be received by NTN later than 13 months from the date of delivery. Within a reasonable time after such notification, NTN will, at its option, (a) correct any failure of the product to conform to drawings, specifications or any defect in material or workmanship, with either replacement or repair of the product, or (b) refund, in part or in whole, the purchase price. Such replacement and repair, excluding charges for labor, is at NTN's expense. All warranty service will be performed at service centers designated by NTN. These remedies are the purchaser's exclusive remedies for breach of warranty. NTN does not warrant (a) any product, components or parts not manufactured by NTN, (b) defects caused by failure to provide a suitable installation environment for the product, (c) damage caused by use of the product for purposes other than those for which it was designed, (d) damage caused by disasters such as fire, flood, wind, and lightning, (e) damage caused by unauthorized attachments or modification, (f) damage during shipment, or (g) any other abuse or misuse by the purchaser. THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. In no case shall NTN be liable for any special, incidental, or consequential damages based upon breach of warranty, breach of contract, negligence, strict tort, or any other legal theory,and in no case shall total liability of NTN exceed the purchase price of the part upon which such liability is based. Such damages include, but are not limited to, loss of profits, loss of savings or revenue, loss of use of the product or any associated equipment, cost of capital, cost of any substitute equipment, facilities or services, downtime, the claims of third parties including customers, and injury to property. Some states do not allow limits on warranties, or on remedies for breach in certain transactions. In such states, the limits in this paragraph and in paragraph (2) shall apply to the extent allowable under case law and statutes in such states. Any action for breach of warranty or any other legal theory must be commenced within 15 months following delivery of the goods. Unless modified in a writing signed by both parties, this agreement is understood to be the complete and exclusive agreement between the parties, superceding all prior agreements, oral or written, and all other communications between the parties relating to the subject matter of this agreement. No employee of NTN or any other party is authorized to make any warranty in addition to those made in this agreement. This agreement allocates the risks of product failure between NTN and the purchaser. This allocation is recognized by both parties and is reflected in the price of the goods. The purchaser acknowledges that it has read this agreement, understands it, and is bound by its terms.
© NTN Corporation. 2001 Although care has been taken to assure the accuracy of the data compiled in this catalog, NTN does not assume any liability to any company or person for errors or omissions.
NTN Ball and Roller Bearings
TECHNICAL DATA CONTENTS
1. Classification and Characteristics of Rolling Bearings ……………………A-5
4.6 Bearing rated life and load calculation examples ………………A-26
1.1 Rolling bearing construction ………………A-5 1.2 Classification of rolling bearings …………A-5
5. Boundary Dimensions and Bearing Number Codes ……………A-28
1.3 Characteristics of rolling bearings ………A-9
5.1 Boundary dimensions ……………………A-28 5.2 Bearing numbers …………………………A-29
2. Bearing Selection ……………………A-10 2.1 Bearing selection flow chart ……………A-10 2.2 Type and character is tics ………………A-12
6. Bearing Tolerances …………………A-33
2.3 Selection of bearing arrangement ………A-13
6.1 Dimensional accuracy and running accuracy …………………………A-33 6.2 Chamfer measurements and tolerance or allowable values of tapered hole ……A-44
3. Load Rating and Life ………………A-15
6.3 Bearing tolerance measurement methods ……………………………………A-46
3.1 Bearing life…………………………………A-15 3.2 Basic rated life and basic dynamic load rating …………………………………A-15 3.3 Machine applications and requisite life …A-16 3.4 Adjusted life rating factor …………………A-16
7. Bearing Fits ……………………………A-47
3.5 Basic static load rating……………………A-17
7.1 Interference ………………………………A-47
3.6 Allowable static equivalent load …………A-18
7.2 The necessity of a proper fit ……………A-47 7.3 Fit selection ………………………………A-47
4. Bearing Load Calculation …………A-19 4.2 Bearing load distribution …………………A-21
8. Bearing Internal Clearance and Preload ……………………………A-56
4.3 Mean load …………………………………A-22
8.1 Bearing internal clearance ………………A-56
4.4 Equivalent load ……………………………A-23
8.2 Internal clearance selection ……………A-56
4.5 Allowable axial load for cylindrical roller bearings ……………………………A-25
8.3 Preload ……………………………………A-64
4.1 Loads acting on shafts……………………A-19
A-2
9. Allowable Speed ………………………A-68
14. Shaft and Housing Design………A-83 14.1 Fixing of bearings ………………………A-83 14.2 Bearing fitting dimensions………………A-84
10. Friction and Temperature Rise……………………A-69
14.3 Shaft and housing accuracy ……………A-85 14.4 Allowable bearing misalignment ………A-85
10.1 Friction ……………………………………A-69 10.2 Temperature rise…………………………A-69
15. Bearing Handling ……………………A-86 15.1 Bearing storage …………………………A-86
11. Lubrication ……………………………A-70
15.2 Installation ………………………………A-86
11.1 Lubrication of rolling bearings …………A-70
15.3 Internal clearance adjustment …………A-88
11.2 Lubrication methods and characteristics ……………………………A-70
15.4 Post installation running test……………A-90 15.5 Bearing disassembly ……………………A-90
11.3 Grease lubrication ………………………A-70 11.4 Solid grease (For bearings with solid grease) ………A-74 11.5 Oil lubrication ……………………………A-74
16. Bearing Damage and Corrective Measures ………………A-93
12. External bearing sealing devices ………………………A-78
17. Technical data ………………………A-95 17.1 Deep groove ball bearing radial internal clearances and axial internal clearances ……………………………………………A-95
13. Bearing Materials ……………………A-81
17.2 Angular contact ball bearing axial load and axial displacement ………………………A-95
13.1 Raceway and rolling element materials ………………A-81
17.3 Tapered roller bearing axial load and axial displacement ………………………A-97
13.2 Cage materials……………………………A-82
17.4 Fitting surface pressure…………………A-98 17.5 Necessary press fit and pullout force …A-99
A-3
●Classification and Characteristics of Rolling Bearings
1.1 Rolling bearing construction Most rolling bearings consist of rings with raceway (an inner ring and an outer ring), rolling elements (either balls or rollers) and a rolling element retainer. The retainer separates the rolling elements at regular intervals holds them in place within the inner and outer raceways, and allows them to rotate freely. See Figs. 1.1 - 1.8.
Outerring Inner ring
Cage Ball
Outer ring Inner ring
Ball Cage
Rolling elements come in two general shapes: ball or rollers. Rollers come in four basic styles: cylindrical, needle, tapered, and spherical. Balls geometrically contact the raceway surfaces of the inner and outer rings at "points", while the contact surface of rollers is a "line" contact. Theoretically, rolling bearings are so constructed as to allow the rolling elements to rotate orbitally while also rotating on their own axes at the same time.
Deep groove ball bearing Fig 1.1
While the rolling elements and the bearing rings take any load applied to the bearings (at the contact point between the rolling elements and raceway surfaces), the retainer takes no direct load. It only serves to hold the rolling units at equal distances from each other and prevent them from falling out.
1.2 Classification of rolling bearings Rolling bearings fall into two main classifications: ball bearings and roller bearings. Ball bearings are classified according to their bearing ring configurations: deep groove, angular contact and thrust types. Roller bearings on the other hand are classified according to the shape of the rollers: cylindrical, needle, taper and spherical. Rolling bearings can be further classified according to the direction in which the load is applied; radial bearings carry radial loads and thrust bearings carry axial loads. Other classification methods include: 1) number of rolling rows (single, multiple, or 4-row), 2) separable and non-separable, in which either the inner ring or the outer ring can be detached, 3) thrust bearings which can carry axial loads in only one direction, and double direction thrust bearings which can carry loads in both directions. There are also bearings designed for special applications, such as: railway car journal roller bearings (RCT bearings), ball screw support bearings, turntable bearings, as well as rectilinear motion bearings (linear ball bearings, linear roller bearings and linear flat roller bearings).
A-5
Angular contact ball bearing Fig. 1.2
●Classification and Characteristics of Rolling Bearings
Single row deep groove ball bearings Single row angular contact ball bearings
Radial ball bearings
Duplex angular contact ball bearings Double row angular contact ball bearings Four-point contact ball bearings
Ball bearings
Self-aligning ball bearings Insert ball bearings
Single direction thrust ball bearings with flat back face High-speed duplex angular contact ball bearings (for axial loads)
Thrust ball bearings
Double direction angular contact thrust ball bearings
Rolling bearings Single row cylindrical roller bearings Double row cylindrical roller bearings Needle roller bearings
Radial roller bearings Single row tapered roller bearings Double row tapered roller bearings Spherical roller bearings
Roller bearings Cylindrical roller thrust bearings Needle roller thrust bearings
Thrust roller bearings
Tapered roller thrust bearings Spherical roller thrust bearings
A-6
●Classification and Characteristics of Rolling Bearings
Ultra thin wall type ball bearings Turntable bearings Ball screw support bearings Railway car journal roller bearings (RCT bearings) Ultra-clean vacuum bearings SL-type cylindrical roller bearings
Special application bearings
Rubber molded bearings Crossed roller thrust bearings Clearance adjusting needle roller bearings Complex bearings Connecting rod cage-equipped needle rollers Yoke type track rollers Stud type track rollers
Special application bearings are not listed in this catalog.
Linear motion bearings
Linear motion bearings are not listed in this catalog
Fig. 1.9 Classification of rolling bearings
A-7
●Classification and Characteristics of Rolling Bearings
Width Contact angle
Inner ring
Ball
Inner ring raceway Outer ring raceway
Pitch circle diameter
Outer ring
Rivet
Bearing bore diameter
Cage
Inner ring side face Shield
Bearing outside diameter
Snap ring Outer ring, front face
Outer ring, back face
Inner ring, back face
Inner ring, front face
Effective load center
Bearing chamfer
Deep groove ball bearing
Angular contact ball bearing
Contact angle Bearing width Inner ring with rib
Standout
Outer ring with 2 ribs
Cone front face rib
Tapered roller
Roller inscribed circle diameter
L-shaped loose rib
Cone back face rib
Effective load center
Cylindrical roller
Cup small inside diameter (SID)
Cone, back face Cone, front face Cup, back face
Cup, front face
Cylindrical roller bearing
Tapered roller bearing
Lock washer Bearing bore diameter Locknut Tapered bore of inner ring
Shaft washer
Sleeve Bearing height
Ball
Bearing outside diameter
Inner ring Spherical roller
Housing washer
Outer ring
Spherical roller bearing
Single-direction thrust ball bearing
Fig. 1.10 Diagram of representative bearing parts
A-8
●Classification and Characteristics of Rolling Bearings
which require high speed, high precision, low torque and low vibration. Conversely, roller bearings have a larger load carrying capacity which makes them more suitable for applications requiring long life and endurance for heavy loads and shock loads.
1.3 Characteristics of rolling bearings 1.3.1 Characteristics of rolling bearings Rolling bearings come in many shapes and varieties, each with its own distinctive features. However, when compared with sliding bearings, rolling bearings all have the following advantages:
1.3.3 Radial and thrust bearings Almost all types of rolling bearings can carry both radial and axial loads at the same time. Generally, bearings with a contact angle of less than 45°have a much greater radial load capacity and are classed as radial bearings; whereas bearings which have a contact angle over 45°have a greater axial load capacity and are classed as thrust bearings. There are also bearings classed as complex bearings which combine the loading characteristics of both radial and thrust bearings.
(1) The starting friction coefficient is lower and there is little difference between this and the dynamic friction coefficient is produced. (2) They are internationally standardized, interchangeable and readily obtainable. (3) They are easy to lubricate and consume less lubricant. (4) As a general rule, one bearing can carry both radial and axial loads at the same time. (5) May be used in either high or low temperature applications. (6) Bearing rigidity can be improved by preloading.
1.3.4 Standard bearings and special bearings Bearings which are internationally standardized as to shape and size are much more economical to use, as they are interchangeable and available on a worldwide basis.
Construction, classes, and special features of rolling bearings are fully described in the boundary dimensions and bearing numbering system section.
However, depending on the type of machine they are to be used in, and the expected application and function, a non-standard or specially designed bearing may be best to use. Bearings that are adapted to specific applications, and "unit bearings" which are integrated (built-in) into a machine's components, and other specially designed bearings are also available.
1.3.2 Ball bearings and roller bearings Generally speaking, when comparing ball and roller bearings of the same dimensions, ball bearings exhibit a lower frictional resistance and lower face run-out in rotation than roller bearings. This makes them more suitable for use in applications
A-9
Bearing Selection 2. Bearing Selection Rolling element bearings are available in a variety of types, configurations, and sizes. When selecting the correct bearing for your application, it is important to consider several factors, such as the calculation of various angles and clearances, which will ensure proper
fit. A comparison of the performance characteristics for each bearing type is shown in Table 2.1. As a general guideline, the basic procedure for selecting the most appropriate bearing is shown in the following flow chart.
2.1 Bearing selection flow chart
Procedure
Confirm operating conditions and operating environment
●Function and construction of components to house bearings
Confirmation items
●Bearing mounting location ●Bearing load (direction and magnitude) ●Rotational speed ●Vibration and shock load ●Bearing temperature (ambient and friction-generated) ●Operating environment (potential for corrosion, degree of contamination, extent of lubrication)
Select bearing type and configuration
●Dimensional limitations (refer to page insert …Ａ-28) ●Bearing load (magnitude, direction, vibration; presence of shock load) (refer to page insert …Ａ-19) ●Rotational speed (refer to page insert …Ａ-68) ●Bearing tolerances (refer to page insert …Ａ-33) ●Rigidity (refer to page insert …Ａ-64) ●Allowable misalignment of inner/outer rings (refer to page insert …Ａ-85) ●Friction torque (refer to page insert …Ａ-69) ●Bearing arrangement (fixed side, floating side) (refer to page insert …Ａ-13) ●Installation and disassembly requirements (refer to page insert …Ａ-86) ●Bearing availability and cost
Selection of bearing type and configuration
(1) Dimensional limitations The allowable space for bearings is typically limited. In most cases, shaft diameter (or the bearing bore diameter) has been determined according to the machine’s other design specifications. Therefore, a bearing’s type and dimensions are determined according to standard bearing bore diameters. For this reason all dimension tables are organized according to standard bore diameters. There is a wide range of standardized bearing types and dimensions: the right one for a particular application can usually be found in these tables. (2) Bearing load The characteristics, magnitude, and direction of loads acting upon a bearing are extremely variable. In general, the basic rated loads shown in bearing dimension tables indicate their load capacity. However, in determining the appropriate bearing type, consideration must also be given to whether the acting load is a radial load only or an axial load only, or combined radial and axial load, etc. When ball and roller bearings within the same dimension series are considered, the roller bearings have a larger load capacity and are also capable of withstanding greater vibration and shock loads.
A-10
Select bearing dimensions
●Design life of components to house bearings (refer to page insert …Ａ-17) ●Dynamic/static equivalent load conditions (refer to page insert …Ａ-23) ●Safety factor (refer to page insert …Ａ-17) ●Allowable speed (refer to page insert …Ａ-68) ●Allowable axial load (refer to page insert …Ａ-17, 25) ●Allowable space (refer to page insert …Ａ-28)
Select bearing tolerances
●Shaft runout tolerances (refer to page insert …Ａ-33) ●Rotational speed (refer to page insert …Ａ-68) ●Torque fluctuation
(3) Rotational speed The allowable speed of a bearing will differ depending upon bearing type, size, tolerances, cage type, load, lubricating conditions, and cooling conditions. The allowable speeds listed in the bearing tables for grease and oil lubrication are for standard NTN bearings. In general, deep groove ball bearings, angular contact ball bearings, and cylindrical roller bearings are most suitable for high speed applications. (4) Bearing tolerances The dimensional accuracy and operating tolerances of bearings are regulated by ISO and JIS standards. For equipment requiring high tolerance shaft runout or high speed operation, etc., bearings with Class 5 tolerance or higher are recommended. Deep groove ball bearings, angular contact ball bearings, and cylindrical roller bearings are recommended for high rotational tolerances. (5) Rigidity Elastic deformation occurs along the contact surfaces of a bearing’s rolling elements and raceway surfaces when under load. With certain types of equipment it is necessary to reduce this deformation as much as
Bearing Selection
possible. Roller bearings exhibit less elastic deformation than ball bearings, and therefore are recommended for such equipment. Furthermore, in some cases, bearings are given an initial load (preloaded) to increase their shafting rigidity. This procedure is commonly applied to deep groove ball bearings, angular contact ball bearings, and tapered roller bearings. (6) Misalignment of inner and outer rings Shaft flexure, variations in shaft or housing accuracy, and fitting errors, etc. result in a certain degree of misalignment between the bearing’s inner and outer rings. In cases where the degree of misalignment is likely to be relatively large, self-aligning ball bearings, spherical roller bearings, or bearing units with selfaligning properties are the most appropriate choices. (Refer to Fig. 2.1)
Fig. 2.1
A-11
Bearing Selection 2.2 Type and character is tics Table 2.1 shows types and characteristics of rolling bearings. Table 2.1 Types and characteristics of rolling bearings Bearing types
Angular Double row Duplex DoubleSelfCylindrical SingleDouble row contact angular flange angular aligning roller flange cylindrical ball contact cylindrical contact ball bearings cylindrical roller bearings ball bearings ball bearings bearings roller bearings roller bearings bearings
Deep groove ball bearings
Characteristics Load Carrying Capacity Radial load Axial load
High speed
1
High rotating accuracy Low noise/vibration Low friction torque
1
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High rigidity
1
Allowable misalignment 1 ☆ for inner/outer rings
For fixed bearings
2
For floating bearings
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◎ 3
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Vibration/shock resistance
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◎
DB and DF ◎ For arrangement ◎
○
DB ○ For arrangement ○
4
○
○
Non-separable or separable Tapered bore bearings
◎
◎
5
For duplex arrangement
Remarks B-5
Reference page
B-41
B-72
B-41
○
○
○
○
○
B-77
NU, N type
NJ, NF type
NUP, NP, NH type
B-89
B-89
B-89
B-89
Bearing types
Tapered Multi-row, Spherical Thrust Double row Spherical angular 4-row roller roller ball roller contact bearings tapered bearings bearings thrust ball thrust roller bearings bearings bearings. Reference
page Characteristics Load Carrying Capacity Radial load Axial load
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A-66
High speed
A-31
High rotating accuracy
―
Low noise/vibration
A-67
Low friction torque
1
1
1
1
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A-54
High rigidity
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A-18
Vibration/shock resistance
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A-79
Allowable misalignment 1 for inner/outer rings
◎
○
A-13
For fixed bearings
A-13
For floating bearings
―
Non-separable or separable
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○
◎
◎
★
○
○
○
○
○
○
○
○
B-131
― B-131
B-229
B-265
B-265
B-265
2 3 4
A-79
For duplex arrangement
1
Tapered bore bearings Remarks Reference page
A-12
5
1 ☆ The number of stars in dicate the degree to which that bearing type displays that particular characteristic. ★ Not applicable to that bearing type. 2 ◎ Indicates dual direction. ○ Indicates single direction axial movement only. 3 ◎ Indicates movement at raceway. ○ Indicates movement at mated surface of inner or outer ring. 4 ○ Indicates both inner ring and outer ring are detachable. 5 ○ Indicates inner ring with tapered bore is possible.
Bearing Selection outer rings are most desirable. Cylindrical roller bearings are generally separable and allow for axial displacement along their raceway surfaces; deep groove ball bearings are non-separable, but can be mounted to allow for displacement along their fitting surfaces. In applications with short distances between bearings, shaft expansion and contraction due to temperature fluctuations is slight, therefore the same type of bearing may be used for both the fixed-side and floating-side bearing. In such cases it is common to use a set of matching bearings, such as angular contact ball bearings, to guide and support the shaft in one axial direction only. Table 2.2 (1) shows representative bearing arrangements where the bearing type differs on the fixed side and floating side. Table 2.2 (2) shows some common bearing arrangements where no distinction is made between the fixed side and floating side. Vertical shaft bearing arrangements are shown in Table 2.2 (3).
2.3 Selection of bearing arrangement Shaft assemblies generally require two bearings to support and locate the shaft radially and axially, relative to the stationary housing. These two bearings are called the “fixed-side” and “floating-side” bearings. The fixed-side bearing “fixes” or controls movement of the shaft axially in relation to the housing. The floating-side bearing moves or “floats” axially in relation to the housing and is therefore able to relieve stress caused by the expansion and contraction of the shaft due to temperature fluctuations, and allow for misalignment caused by fitting errors. Fixed-side bearings have the capacity to receive both axial and radial loads, and therefore a bearing which controls axial movement in both directions should be selected. Floating-side bearings receive only radial loads, and therefore bearings which are mounted to permit free axial movement, or bearings with separable inner and Table 2.2 (1) Bearing arrangement (Fixed and Floating)
Arrangement Fixed
Comment
Application
Floating 1. General arrangement for small machinery. 2. For radial loads, but will also accept axial loads. 3. Preloading by springs or shims on outer ring face.
Small pumps, small electric motors, auto-mobile transmissions, etc.
1. Suitable for high speed. Widely used. 2. Even with expansion and contraction of shaft, non-fixing side moves smoothly.
Medium-sized electric motors, ventilators, etc.
1. Radial loading plus dual direction axial loading possible. 2. In place of duplex angular contact ball bearings, double-row angular contact ball bearings are also used.
Wormgear speed reducers, etc.
1. Heavy loading capable. 2. Shafting rigidity increased by preloading the two back-to-back fixed bearings. 3. Requires high precision shafts and housings, and minimal fitting
Machine tool spindles, etc.
1. Allows for shaft deflection and fitting errors. 2. By using an adaptor on long shafts without screws or shoulders, bearing mounting and dismounting can be facilitated. 3. Not suitable for axial load applications.
Counter shafts for general industrial equipment, etc.
1. Widely used in general industrial machinery with heavy and shock load demands. 2. Allows for shaft deflection and fitting errors. 3. Accepts radial loads as well as dual direction axial loads.
Reduction gears for general industrial equipment, etc.
1. Widely used in general industrial machinery with heavy and shock loading. 2. Radial and dual directional axial loading.
Industrial machinery reduction gears. etc.
1. Capable of handling large radial and axial loads at high rotational speeds. 2. Maintains clearance between the bearing’s outer diameter and housing inner diameter to prevent deep groove ball bearings from receiving radial loads.
Diesel locomotives, etc.
A-13
Bearing Selection
Table 2.2 (2) Bearing arrangement (Placed oppositely)
Arrangement
Back to back
Comment
Application
General arrangement for use in small machines.
Small electric motors, small reduction gears, etc.
1. This type of back-to-back arrangement well suited for moment loads. 2. Preloading increases shaft rigidity. 3. High speed reliable.
Spindles of machine tools, etc.
1. Accepts heavy loading. 2. Suitable if inner and outer ring shrink-fit is required. 3. Care must be taken that axial clearance does not become too small during operation.
Construction equipment, mining equipment sheaves, agitators, etc.
1. Withstands heavy and shock loads. Wide range application. 2. Shafting rigidity increased by preloading. 3. Back-to-back arrangement for moment loads, and face-to-face arrangement to alleviate fitting errors. 4. With face-to-face arrangement, inner ring shrink-fit is facilitated.
Reduction gears, automotive axles, etc.
Face to face Table 2.2 (3) Bearing arrangement (Vertical shaft)
Arrangement
Comment
Application
When fixing bearing is a duplex angular contact ball bearing, non-fixing bearing is a cylindrical roller bearing.
Machine tool spindles, vertical mounted electric motors, etc.
1. Most suitable arrangement for very heavy axial loads. Crane center shafts, 2. Depending on the relative alignment of the spherical surface of the etc. rollers in the upper and lower bearings, shaft deflection and fitting errors can be absorbed. 3. Lower self-aligning spherical roller thrust bearing pre-load is possible.
A-14
●Load Rating and Life 3. Load Rating and Life 3.1 Bearing life Even in bearings operating under normal conditions, the surfaces of the raceway and rolling elements are constantly being subjected to repeated compressive stresses which causes flaking of these surfaces to occur. This flaking is due to material fatigue and will eventually cause the bearings to fail. The effective life of a bearing is usually defined in terms of the total number of revolutions a bearing can undergo before flaking of either the raceway surface or the rolling element surfaces occurs.
L10 ＝（
C
p
）…………（3.1）
P
where, p= 3......................For ball bearings p= 10/3.................For roller bearings L10 : Basic rating life 106 revolutions C : Basic dynamic rating load, N (Cr: radial bearings, Ca: thrust bearings) P : Equivalent dynamic load, N (Pr: radial bearings, Pa: thrust bearings)
Other causes of bearing failure are often attributed to problems such as seizing, abrasions, cracking, chipping, gnawing, rust, etc. However, these so called "causes" of bearing failure are usually themselves caused by improper installation, insufficient or improper lubrication, faulty sealing or inaccurate bearing selection. Since the above mentioned "causes" of bearing failure can be avoided by taking the proper precautions, and are not simply caused by material fatigue, they are considered separately from the flaking aspect.
The basic rating life can also be expressed in terms of hours of operation (revolution), and is calculated as shown in formula (3.2). p
L10h ＝ 500 f h …………（3.2） fh
＝ fn
fn
＝ （
C
…………（3.3）
P
33.3 n
1/p
） ………（3.4）
3.2 Basic rating life and basic dynamic load rating where, L10h : Basic rating life, h fh : Life factor fn : Speed factor n : Rotational speed, r/ min
A group of seemingly identical bearings when subjected to identical load and operating conditions will exhibit a wide diversity in their durability. This "life" disparity can be accounted for by the difference in the fatigue of the bearing material itself. This disparity is considered statistically when calculating bearing life, and the basic rating life is defined as follows.
Ball bearings
The basic rating life is based on a 90% statistical model which is expressed as the total number of revolutions 90% of the bearings in an identical group of bearings subjected to identical operating conditions will attain or surpass before flaking due to material fatigue occurs. For bearings operating at fixed constant speeds, the basic rating life (90% reliability) is expressed in the total number of hours of operation.
n r/min
fn
60,000
0.082
Roller bearings
L10h n 80,000 60,000
fh
n r/min
fn
5.4
80,000
5
60,000
4.5
40,000
20,000
30,000
6,000 4,000
The basic dynamic load rating is an expression of the load capacity of a bearing based on a constant load which the bearing can sustain for one million revolutions (the basic life rating). For radial bearings this rating applies to pure radial loads, and for thrust bearings it refers to pure axial loads. The basic dynamic load ratings given in the bearing tables of this catalog are for bearings constructed of NTN standard bearing materials, using standard manufacturing techniques. Please consult NTN Engineering for basic load ratings of bearings constructed of special materials or using special manufacturing techniques.
3,000
1,500
8,000
0.18
0.24
2,000
10,000
15,000
0.20
3
10,000 8,000
0.18
0.20
6,000
20,000
0.24
3,000
0.26 0.28
2,000
6,000
10,000
800
0.30
6,000
1,500
4,000 0.35
600 0.4
3,000
2,000 0.5
1.8
600
0.7 0.8
300
1.4
200
1.3
150
1.2
100
1,000 900 800 700 600 500
1.0 400 1.1
20
1.2
15
1.3
1.49
2,000
1.5
1,500
300
1.0
1.4 1.3
0.7
40 30
20
0.80
15
0.74
700
500
1.0 400
1.2
1.44
1.0 0.95 0.90
300
1.3 1.4
10
1.1
600
1.1
0.85
1.2
800
0.9
0.95
1,000 900
60
0.75
200
0.6
0.85 0.80
200
Fig. 3.1 Bearing life rating scale
A-15
1.7 1.6
0.5
0.8
0.90
1.4
10
1.8
3,000
80 1.1
0.9 40
The relationship between the basic rating life, the basic dynamic load rating and the bearing load is given in formula (3.1).
1.9
1.5
0.6
80
30
2 4,000
0.4
1.6
1,500
200
60
1.9
800
400
300
100
1,000
0.35
1.7
400
150
2
2.5
8,000
0.30
1,000
3
15,000
0.22
4,000
2.5
0.26 0.28
30,000 0.16
3.5
20,000 0.16
0.22
3.5
20,000 15,000
0.14
8,000
40,000 0.14
4
15,000
10,000
4
0.12
30,000
40,000 0.12
4.6 4.5
60,000
40,000
0.10
fh
0.106
0.09
30,000
L10h n
0.76
●Load Rating and Life
Formula (3.2) can also be expressed as shown in formula (3.5). L10h ＝
10
where, Φ j : Frequency of individual load conditions L j : Life under individual conditions
6
C p （ ）…（3.5） 60 n P
3.3 Machine applications and requisite life When selecting a bearing, it is essential that the requisite life of the bearing be established in relation to the operating conditions. The requisite life of the bearing is usually determined by the type of machine in which the bearing will be used, and duration of service and operational reliability requirements. A general guide to these requisite life criteria is shown in Table 3.1. When determining bearing size, the fatigue life of the bearing is an important factor; however, besides bearing life, the strength and rigidity of the shaft and housing must also be taken into consideration.
The relation ship between Rotational speed n and speed factor fn as well as the relation between the basic rating life L10h and the life factor fn is shown in Fig. 3.1. When several bearings are incorporated in machines or equipment as complete units, all the bearings in the unit are considered as a whole when computing bearing life (see formula 3.6). The total bearing life of the unit is a life rating based on the viable lifetime of the unit before even one of the bearings fails due to rolling contact fatigue. 1 L＝ ………（3.6） 1 1 1 1/e （ e ＋ e＋ … e） L2 Ln L1
3.4 Adjusted life rating factor The basic bearing life rating (90% reliability factor) can be calculated through the formulas mentioned earlier in Section 5.2. However, in some applications a bearing life factor of over 90% reliability may be required. To meet these requirements, bearing life can be lengthened by the use of specially improved bearing materials or special construction techniques. Moreover, according to elastohydrodynamic lubrication theory, it is clear that the bearing operating conditions (lubrication, temperature, speed, etc.) all exert an effect on bearing life. All these adjustment factors are taken into consideration when calculating bearing life, and using the life adjustment factor as prescribed in ISO 281, the adjusted bearing life can be determined.
where, e = 10/9....................For ball bearings e = 9/8......................For roller bearings L : Total basic rating life of entire unit, h L1 , L2 …Ln : Basic rating life of individual bearings, 1, 2, …n, h When the load conditions vary at regular intervals, the life can be given by formula (3.7). -1
Lm ＝（ΣΦ j ／Lj ） …………………（3.7）
p
Lna ＝ a1・a2・a3・ （C／P） …（3.8）
Table 3.1 Machine application and requisite life Service classification
Life factor and machine application L10h
∼4
4∼12
Machines used for short periods or used only occasionally
¡Electric hand tools ¡Household appliances
Short period or intermittent use, but with high reliability requirements
¡Medical appliances ¡Construction ¡Measuring instruments equipment ¡Elevators ¡Cranes
Machines not in constant use, but used for long periods
¡Automobiles ¡Two-wheeled vehicles
12∼30
30∼60
×103 h 60∼
¡Farm machinery ¡Office equipment ¡Home air-
Machines in constant use over 8 hours a day
conditioning motor
¡Crane (sheaves)
¡Small motors ¡Buses/trucks ¡Drivers ¡Woodworking machines
¡Machine spindles ¡Industrial motors ¡Crushers ¡Vibrating screens
¡Main gear drives ¡Rubber/plastic ¡Calender rolls ¡Printing machines
¡Rolling mills ¡Escalators ¡Conveyors ¡Centrifuges
¡Railway vehicle axles Air conditioners ¡Large motors ¡Compressor pumps
¡Locomotive axles ¡Traction motors ¡Mine hoists ¡Pressed flywheels
¡Papermaking machines ¡Propulsion equipment for marine vessels ¡Water supply
equipment ¡Mine drain pumps/ventilators ¡Power generating equipment
24 hour continuous operation, non-interruptable
A-16
●Load Rating and Life
where, Lna : Adjusted life rating in millions of revolutions (106)(adjusted for reliability, material and operating conditions) a1 : Reliability adjustment factor a2 : Material adjustment factor a3 : Operating condition adjustment factor
insufficient oil film formation can be caused, for example, by the lubricating oil viscosity being too low for the operating temperature (below 13 mm2/s for ball bearings; below 20 mm2/s for roller bearings); or by exceptionally low rotational speed (nr/min x d p mm less than 10,000). For bearings used under special operating conditions, please consult NTN Engineering.
3.4.1 Life adjustment factor for reliability a1 The values for the reliability adjustment factor a1 (for a reliability factor higher than 90%) can be found in Table 3.2.
As the operating temperature of the bearing increases, the hardness of the bearing material decreases. Thus, the bearing life correspondingly decreases. The operating temperature adjustment values are shown in Fig. 3.2.
Reliability %
Ln
Reliability factor a1
90
L10
1.00
95
L5
0.62
96
L4
0.53
97
L3
0.44
98
L2
0.33
99
L1
0.21
Life adjustment value a3
Table 3.2 Reliability adjustment factor values a1 1.0 0.8 0.6 0.4 0.2 100 150 200 250 300 Operating temperature ˚C
3.4.2 Life adjustment factor for material a2 The life of a bearing is affected by the material type and quality as well as the manufacturing process. In this regard, the life is adjusted by the use of an a2 factor.
Fig. 3.2 Life adjustment value for operating temperature
3.5 Basic static load rating
The basic dynamic load ratings listed in the catalog are based on NTN's standard material and process, therefore, the adjustment factor a2 =1. When special materials or processes are used the adjustment factor can be larger than 1.
When stationary rolling bearings are subjected to static loads, they suffer from partial permanent deformation of the contact surfaces at the contact point between the rolling elements and the raceway. The amount of deformity increases as the load increases, and if this increase in load exceeds certain limits, the subsequent smooth operation of the bearings is impaired.
NTN bearings can generally be used up to 120˚C. If bearings are operated at a higher temperature, the bearing must be specially heat treated (stabilized) so that inadmissible dimensional change does not occur due to changes in the micro-structure. This special heat treatment might cause the reduction of bearing life because of a hardness change.
It has been found through experience that a permanent deformity of 0.0001 times the diameter of the rolling element, occurring at the most heavily stressed contact point between the raceway and the rolling elements, can be tolerated without any impairment in running efficiency.
3.4.3 Life adjustment factor a3 for operating conditions The operating conditions life adjustment factor a3 is used to adjust for such conditions as lubrication, operating temperature, and other operation factors which have an effect on bearing life.
The basic rating static load refers to a fixed static load limit at which a specified amount of permanent deformation occurs. It applies to pure radial loads for radial bearings and to pure axial loads for thrust bearings. The maximum applied load values for contact stress occurring at the rolling element and raceway contact points are given below.
Generally speaking, when lubricating conditions are satisfactory, the a3 factor has a value of one; and when lubricating conditions are exceptionally favorable, and all other operating conditions are normal, a3 can have a value greater than one.
For ball bearings (except self-aligning ball bearings) For self-aligning ball bearings For roller bearings
However, when lubricating conditions are particularly unfavorable and the oil film formation on the contact surfaces of the raceway and rolling elements is insufficient, the value of a3 becomes less than one. This A-17
4,200 Mpa 4,600 Mpa 4,000 Mpa
●Load Rating and Life
Table 3.4 Minimum safety factor values S0
3.6 Allowable static equivalent load
Ball bearings
Roller bearings
High rotational accuracy demand
2
3
Normal rotating accuracy demand (Universal application)
1
1.5
0.5
1
Operating conditions
Generally the static equivalent load which can be permitted (See Section 4.4.2 page A-23) is limited by the basic static rating load as stated in Section 5.5. However, depending on requirements regarding friction and smooth operation, these limits may be greater or lesser than the basic static rating load.
Slight rotational accuracy deterioration permitted (Low speed, heavy loading, etc.)
In the following formula (3.9) and Table 3.4 the safety factor S0 can be determined considering the maximum static equivalent load.
Note 1: For spherical thrust roller bearings, min. S0 value=4. 2: For shell needle roller bearings, min. S0 value=3. 3: When vibration and/or shock loads are present, a load factor based on the shock load needs to be included in the P0 max value.
So =Co／Po…（3.9） where, So : Safety factor Co : Basic static rating load, N (radial bearings: Cor, thrust bearings: Coa) Po max : Maximum static equivalent load, N (radial: Por max, thrust: Coa max)
A-18
●Bearing Load Calculation 4. Bearing Load Calculation To compute bearing loads, the forces which act on the shaft being supported by the bearing must be determined. These forces include the inherent dead weight of the rotating body (the weight of the shafts and components themselves), loads generated by the working forces of the machine, and loads arising from transmitted power.
6
Kt ＝
19.1×10 ・H Dp・n
……（4.2）
｛kgf｝
Ks ＝ Kt・tanα（Spur gear）………（4.2a） tanα ＝ Kt・ cosβ（Helical gear）……（4.2b） Kr ＝ √Kt ＋Ks ………………………（4.3） 2
2
Ka ＝ Kt・tanβ（Helical gear） ……（4.4） where, Kt ：Tangential gear load (tangential force), N Ks ：Radial gear load (separating force), N Kr ：Right angle shaft load (resultant force of tangential force and separating force), N Ka：Parallel load on shaft, N H ：Transmission force , kW n ：Rotational speed, r/min Dp：Gear pitch circle diameter, mm α：Gear pressure angle β：Gear helix angle
4.1 Load acting on shafts 4.1.1 Load factor There are many instances where the actual operational shaft load is much greater than the theoretically calculated load, due to machine vibration and/or shock. This actual shaft load can be found by using formula (4.1). K ＝ fw・Kc ……………………………（4.1） where, K ：Actual shaft load N｛kgf｝ fw ：Load factor (Table 4.1) Kc：Theoretically calculated value N｛kgf｝ 4.1.2 Gear load The loads operating on gears can be divided into three main types according to the direction in which the load is applied; i.e. tangential (Kt), radial (Ks), and axial (Ka). The magnitude and direction of these loads differ according to the types of gears involved. The load calculation methods given herein are for two general-use gear and shaft arrangements: parallel shaft gears, and cross shaft gears. For load calculation methods regarding other types of gear and shaft arrangements, please consult NTN Engineering.
Ks
Kt Fig. 4.1 Spur gear loads
(1)Loads acting on parallel shaft gears The forces acting on spur and helical parallel shaft gears are depicted in Figs. 4.1, 4.2, and 4.3. The load magnitude can be found by using or formulas (4.2), through (4.4).
Ks
Ka
Kt Fig. 4.2
Table 4.1 Load factor fw fw
｝
6
1.95×10 ・H ＝ Dp・n
It is possible to calculate theoretical values for these loads; however, there are many instances where the load acting on the bearing is usually determined by the nature of the load acting on the main power transmission shaft.
Amount of shock
N
Helical gear loads
Application Kt
Electric machines, machine tools, 1.0∼1.2 measuring instruments.
Light shock
Railway vehicles, automobiles, rolling mills, metal working machines, paper making machines, rubber mixing 1.2∼1.5 machines, printing machines, aircraft, textile machines, electrical units, office machines.
Heavy shock
Crushers, agricultural equipment, 1.5∼3.0 construction equipment, cranes.
Kr
Ks
Dp
Very little or no shock
Fig. 4.3
A-19
Radial resultant forces
●Bearing Load Calculation
Because the actual gear load also contains vibrations and shock loads as well, the theoretical load obtained by the above formula should also be adjusted by the gear factor fz as shown in Table 4.2.
where, Ksp，Ksg ：Pinion and gear separating force, N Kap，Kag：Pinion and gear axial load, N
Table 4.2 Gear factor fz Gear type
fz
Precision ground gears (Pitch and tooth profile errors of less than 0.02 mm)
1.05∼1.1
Ordinary machined gears (Pitch and tooth profile errors of less than 0.1 mm)
1.1∼1.3
For spiral bevel gears, the direction of the load varies depending on the direction of the helix angle, the direction of rotation, and which side is the driving side or the driven side. The directions for the separating force (Ks) and axial load (Ka) shown in Fig. 4.5 are positive directions. The direction of rotation and the helix angle direction are defined as viewed from the large end of the gear. The gear rotation direction in Fig. 4.5 is assumed to be clockwise (right).
(2)Loads acting on cross shafts Gear loads acting on straight tooth bevel gears and spiral bevel gears on cross shafts are shown in Figs. 4.4 and 4.5. The calculation methods for these gear loads are shown in Table 4.3. Herein, to calculate gear loads for straight bevel gears, the helix angle β= 0.
K tp
Ka p Ks p
Ka g Ks g
The symbols and units used in Table 4.3 are as follows: Kt ：Tangential gear load (tangential force), N Ks ：Radial gear load (separating force), N Ka ：Parallel shaft load (axial load), N H ：Transmission force, kW n ：Rotational speed, r/min Dpm ：Mean pitch circle diameter, mm α ：Gear pressure angle β ：Helix angle δ ：Pitch cone angle
Kt g
Fig. 4.4 Loads on bevel gears Kt
Ka Ks δ β
In general, the relationship between the gear load and the pinion gear load, due to the right angle intersection of the two shafts, is as follows: Ksp＝Kag…………………（4.5） Kap＝Ksg…………………（4.6）
D pm 2
Fig. 4.5 Bevel gear diagram
Table 4.3 Loads acting on bevel gears Pinion
Rotation direction Helix direction
Unit N Clockwise
Counter clockwise
Clockwise
Counter clockwise
Right
Left
Left
Right
6
Kt=
Tangential load Kt
6
19.1×10 ・H Dpm・n
1.95×10 ・H
,
Dpm・n
Driving side
Ks=Kt
tanα cosδ + tanβsinδ cosβ
Ks=Kt
tanα cosδ - tanβsinδ cosβ
Driven side
Ks=Kt
tanα cosδ - tanβsinδ cosβ
Ks=Kt
tanα cosδ + tanβsinδ cosβ
Driving side
Ka=Kt
tanα sinδ - tanβcosδ cosβ
Ka=Kt
tanα sinδ + tanβcosδ cosβ
Driven side
Ka=Kt
tanα sinδ + tanβcosδ cosβ
Ka=Kt
tanα sinδ - tanβcosδ cosβ
Separating force Ks
Axial load Ka
A-20
●Bearing Load Calculation
4.1.2 Chain / belt shaft load The tangential loads on sprockets or pulleys when power (load) is transmitted by means of chains or belts can be calculated by formula (4.7).
4.2 Bearing load distribution For shafting, the static tension is considered to be supported by the bearings, and any loads acting on the shafts are distributed to the bearings.
6
19.1 ×10 ・H Dp・n
Kt＝
N
｝
For example, in the gear shaft assembly depicted in Fig. 4.7, the applied bearing loads can be found by using formulas (4.10) and (4.11).
……………（4.7）
6
1.95×10 ・H ｛kgf｝ Dp・n
＝
FrA＝
where, Kt ：Sprocket/pulley tangential load, N
a+b d F1＋ b c+d
FrB＝−
H ：Transmitted force, kW
F2 ……………（4.10）
a c F1＋ F2 ……………（4.11） b c+d
where, FrA：Radial load on bearing A, N FrB：Radial load on bearing B, N F1, F2：Radial load on shaft, N
Dp：Sprocket/pulley pitch diameter,mm For belt drives, an initial tension is applied to give sufficient constant operating tension on the belt and pulley. Taking this tension into account, the radial loads acting on the pulley are expressed by formula (4.8). For chain drives, the same formula can also be used if vibrations and shock loads are taken into consideration. Kr＝f b・Kt…（4.8） where, Kr：Sprocket or pulley radial load, N
a
f b：Chain or belt factor (Table 4.3)
Table. 4.4 chain or belt factor f b Chain or belt type
b
Bearing A
Bearing B
FrA
FrB
fb
Chain (single)
1.2∼1.5
V-belt
1.5∼2.0
Timing belt
1.1∼1.3
Flat belt (w / tension pulley)
2.5∼3.0
Flat belt
3.0∼4.0
F!
Fig. 4.7 Gear shaft
se side F1 Loo
Dp
Kr F2 Tens ion
F@ c
side
Fig. 4.6 Chain / belt loads
A-21
d
●Bearing Load Calculation
(3) Linear fluctuating load The mean load, Fm, can be approximated by formula (4.14).
4.3 Mean load The load on bearings used in machines under normal circumstances will, in many cases, fluctuate according to a fixed time period or planned operation schedule. The load on bearings operating under such conditions can be converted to a mean load (Fm), this is a load which gives bearings the same life they would have under constant operating conditions.
Fm＝
Fmin＋2Fmax …（4.14） 3
F
(1) Fluctuating stepped load The mean bearing load, Fm, for stepped loads is calculated from formula (4.12). F1 , F2 ....... Fn are the loads acting on the bearing; n1, n2.......nn and t1, t2....... tn are the bearing speeds and operating times respectively.
Fmax Fm
Fmin
p
Σ （Fi ni ti） 1/p …………………（4.12） Σ （ni ti）〕
Fm＝ 〔
t
where:
Fig. 4.10 Linear fluctuating load
For ball bearings For roller bearings
p＝3 p＝10/3
(4) Sinusoidal fluctuating load The mean load, Fm, can be approximated by formulas (4.15) and (4.16).
F F1 F2
case (a) case (b)
Fm
Fn n 1 t1
n2t2
Fm＝0.75 Fmax ………（4.15） Fm＝0.65 Fmax ………（4.16）
F
n n tn Fmax
Fig. 4.8 Stepped load
Fm
(2) Consecutive series load Where it is possible to express the function F(t) in terms of load cycle to and time t, the mean load is found by using formula (4.13). Fm＝ 〔
to 1 p （t）d t ∫ F to o
t
（a） F
1/p
〕………………（4.13）
Fmax
where: p＝3 p＝10/3
For ball bearings For roller bearings
Fm
（b） F Fig. 4.11 Sinusoidal variable load
F(t) Fm
0
to
2to
t
Fig. 4.9 Time function series load
A-22
t
●Bearing Load Calculation
where,
4.4 Equivalent load
Por：Static equivalent radial load, N Fr ：Actual radial load, N Fa ：Actual axial load, N Xo ：Static radial load factor Yo ：Static axial load factor The values for Xo and Yo are given in the respective bearing tables.
4.4.1 Dynamic equivalent load When both dynamic radial loads and dynamic axial loads act on a bearing at the same time, the hypothetical load acting on the center of the bearing which gives the bearings the same life as if they had only a radial load or only an axial load is called the dynamic equivalent load.
(2) Static equivalent axial load For spherical thrust roller bearings the static equivalent axial load is expressed by formula (4.21). Poa＝Fa＋2.7Fr…（4.21） where, Poa：Static equivalent axial load, N Fa ：Actual axial load, N Fr ：Actual radial load, N Provided that Fr / Fa ≦ 0.55 only.
For radial bearings, this load is expressed as pure radial load and is called the dynamic equivalent radial load. For thrust bearings, it is expressed as pure axial load, and is called the dynamic equivalent axial load. (1) Dynamic equivalent radial load The dynamic equivalent radial load is expressed by formula (4.17). where, Pr：Dynamic equivalent radial load, N Fr：Actual radial load, N Fa：Actual axial load, N X ：Radial load factor Y ：Axial load factor The values for X and Y are listed in the bearing tables. (2) Dynamic equivalent axial load As a rule, standard thrust bearings with a contact angle of 90˚ cannot carry radial loads. However, self-aligning thrust roller bearings can accept some radial load. The dynamic equivalent axial load for these bearings is given in formula (4.18). Pa＝Fa＋1.2Fr………………（4.18） where, Pa：Dynamic equivalent axial load, N Fa：Actual axial load, N Fr ：Actual radial load, N Provided that Fr / Fa ≦ 0.55 only. 4.4.2 Static equivalent load The static equivalent load is a hypothetical load which would cause the same total permanent deformation at the most heavily stressed contact point between the rolling elements and the raceway as under actual load conditions; that is when both static radial loads and static axial loads are simultaneously applied to the bearing. For radial bearings this hypothetical load refers to pure radial loads, and for thrust bearings it refers to pure centric axial loads. These loads are designated static equivalent radial loads and static equivalent axial loads respectively. (1) Static equivalent radial load For radial bearings the static equivalent radial load can be found by using formula (4.19) or (4.20). The greater of the two resultant values is always taken for Por. Por＝Xo Fr＋Yo Fa… （4.19） Por＝Fr …………… （4.20）
A-23
●Bearing Load Calculation
4.4.3 Load calculation for angular ball bearings and tapered roller bearings For angular ball bearings and tapered roller bearings the pressure cone apex (load center) is located as shown in Fig. 4.12, and their values are listed in the bearing tables.
α
α
Fa Load center
When radial loads act on these types of bearings the component force is induced in the axial direction. For this reason, these bearings are used in pairs (either DB or DF arrangements). For load calculation this component force must be taken into consideration and is expressed by formula (4.22).
Fa
Fr
Load center
Fr
a
0.5Fr Fa ＝ Y …………………（4.22） The equivalent radial loads for these bearing pairs are given in Table 4.5.
a Fig. 4.12 Pressure cone apex
Table 4.5 Bearing arrangement and dynamic equivalent load Bearing arrangement DB arrangement
Brg1
Load condition
Brg2
0.5Fr1 0.5Fr2 ≦ ＋ Fa Y1 Y2
Fa
F r1
DF arrangement
F r2
Brg2
Brg1 Fa
Fr2
DB arrangement
0.5Fr1 0.5Fr2 ＞ ＋ Fa Y1 Y2
Brg1
Fr1
Brg2 Fa
Fr1
DF arrangement
Fr2
Brg2
Brg1 0.5Fr2 0.5Fr1 ＞ ＋ Fa Y1 Y2
Fa
Fr2
0.5Fr2 0.5Fr1 ≦ ＋ Fa Y2 Y1
Fr1
Axial load
Equivalent radial load
Fa1＝ 0.5Fr2 ＋ Fa Y2
Pr1＝XFr1＋Y1 0.5Fr2 ＋ Fa Y2
Fa2＝ 0.5Fr2 Y2
Pr2＝Fr2
Fa1＝ 0.5Fr1 Y1
Pr1＝Fr1
Fa2＝ 0.5Fr1 − Fa Y1
Pr2＝XFr2＋Y2 0.5Fr1 − Fa Y1
Fa1＝ 0.5Fr1 Y1
Pr1＝Fr1
Fa2＝ 0.5Fr1 ＋ Fa Y1
Pr2＝XFr2＋Y2 0.5Fr1 ＋ Fa Y1
Fa1＝ 0.5Fr2 − Fa Y2
Pr1＝XFr1＋Y1 0.5Fr2 − Fa Y2
Fa2＝ 0.5Fr2 Y2
Pr2＝Fr2
Note 1: The above are valid when the bearing internal clearance and preload are zero. 2: Radial forces in the opposite direction to the arrow in the above illustration are also regarded as positive.
A-24
●Bearing Load Calculation
●Bearing Load Calculation
4.6 Bearing rated life and load calculation examples
――――――――――――――――――――――――――――――――――――
(Example 3) Determine the optimum model number for a cylindrical roller bearing operating at 450 r/min, with a radial load Fr of 200 kN, and which must have a life of over 20,000 hours.
In the examples given in this section, for the purpose of calculation, all hypothetical load factors as well as all calculated load factors may be presumed to be included in the resultant load values.
――――――――――――――――――――――――――――――――――――
From Fig. 3.1 the life factor fh = 3.02 (L10h at 20,000), and the speed factor fn = 0.46 (n = 450 r/min). To find the required basic dynamic load rating, Cr, formula (3.3) is used.
――――――――――――――――――――――――――――――――――――
(Example 1) What is the rating life in hours of operation (L10h) for deep groove ball bearing 6208 operating at 650 r/min, with a radial load Fr of 3.2 kN ?
fh 3.02 Pr ＝ ×200 0.46 fn ＝1 313kN｛134,000kgf｝
Cr＝
――――――――――――――――――――――――――――――――――――
From formula (4.17) the dynamic equivalent radial load: Pr＝Fr＝3.2kN｛326kgf｝ The basic dynamic rated load for bearing 6208 (from bearing table) is 29.1 kN, and the speed factor (fn) for ball bearings at 650 r/min (n) from Fig. 4.1 is 0.37. The life factor, fh, from formula (3.3) is: f h＝fn
From the bearing table, the smallest bearing that fulfills all the requirements is NU2336 (Cr = 1380 kN). ――――――――――――――――――――――――――――――――――――
(Example 4) What are the rated lives of the two tapered roller bearings supporting the shaft shown in Fig. 4.14 Bearing @ is an 4T-32206 with a Cr = 54.5 kN, and bearing ! is an 4T-32205 with a Cr = 42.0 kN. The spur gear shaft has a pitch circle diameter Dp of 150 mm, and a pressure angle α of 20˚. The gear transmitted force HP = 150 kW at 2,000 r/min (speed factor n).
29.1 Cr ＝0.37× ＝3.36 3.2 Pr
Therefore, with fh = 3.36 from Fig. 3.1 the rated life, L10h, is approximately 19,000 hours. ――――――――――――――――――――――――――――――――――――
(Example 2) What is the life rating L10h for the same bearing and conditions as in Example 1, but with an additional axial load Fa of 1.8 kN ?
――――――――――――――――――――――――――――――――――――
――――――――――――――――――――――――――――――――――――
To find the dynamic equivalent radial load value for Pr, the radial load factor X and axial load factor Y are used. The basic static load rating, Cor, for bearing 6208 is 17.8 kN.
Bearings1 (4T-32206) 150
Bearings2 (4T-32205)
1.8 Fa ＝ ＝0.10 17.8 Cor
Therefore, from the bearing tables e= 0.29. For the operating radial load and axial load:
70
1.8 Fa ＝ ＝0.56＞e=0.29 3.2 Fr
Fig. 4.14 Spur gear diagram
From the bearing tables X = 0.56 and Y = 1.48, and from formula (4.17) the equivalent radial load, Pr, is:
The gear load from formulas (4.1), (4.2a) and (4.3) is: 6
19.1×10 ・H 19,100×150 ＝ Dp・n 150×2,000 ＝9.55kN｛974kgf｝
Kt ＝
Pr＝XFr＋YFa＝0.56×3.2＋1.48×1.8 ＝4.46
100 170
kN｛455kgf｝
Ks ＝Kt・tanα＝9.55×tan20˚
From Fig. 3.1 and formula (3.3) the life factor, fh, is:
＝3.48kN｛355kgf｝
29.1 Cr f h＝fn ＝ 0.37× ＝ 2.41 4.46 Pr
Kr ＝√Kt2 ＋Ks2 ＝√9.552 ＋3.482 ＝10.16kN｛1,040kgf｝
The radial loads for bearings ! and @ are:
Therefore, with life factor fh = 2.41, from Fig. 5.1 the rated life, L10h, is approximately 7,000 hours.
Fr1 ＝
A-26
100 100 Kr ＝ ×10.16＝5.98kN｛610kgf｝ 170 170
●Bearing Load Calculation
The equivalent radial load, Pr, for each operating condition is found by using formula (4.17) and shown in Table 4.8. Because all the values for Fri and Fai from the bearing tables are greater than Fa / Fr > e＝ 0.18, X ＝ 0.67 e Y2 ＝ 5.50.
70 70 Kr＝ ×10.16＝4.18kN｛426kgf｝ 170 170
Fr2 ＝
0.5Fr1 0.5Fr2 ＝1.87＞ ＝1.31 Y1 Y2
Pri ＝ XFri ＋Y2 Fai ＝ 0.67Fri ＋ 5.50Fai
The equivalent radial load is:
Table 4.8
Pr1 ＝Fr1 ＝5.98kN｛610kgf｝ Pr2 ＝XFr2 ＋Y2
0.5Fr1 Y1
＝0.4×4.18＋1.67×1.87 ＝4.66kN｛475kgf｝
From formula (3.3) and Fig. 3.1 the life factor, fh, for each bearing is:
Fm = 〔
(Example 6) Find the Basic rated life and limit of allowable axial load when operated following. Provided that intermittent axial load and oil lubricant. Fr＝10kN｛1,020kgf｝
n ＝2,000 r/min ――――――――――――――――――――――――――――――――――――
The equivalent radial load is: Pr＝Fr＝10kN｛1,020kgf｝ The speed factor of cylindrical roller bearing, fn , at n＝ 2,000 r/min
The combined bearing life, Lh, from formula (3.6) is: 1
fn ＝ 〔
1/e
〕
33.3 2,000
3/10
〕 ＝0.293
The life factor, f h, from formula (3.4) 1
＝
・ni・φi）3/10 〕 ＝48.1kN｛4,906kgf｝ i φi ） Σ （n・
――――――――――――――――――――――――――――――――――――
Lh1 ＝13,200×a2 ＝13,200×1.4 ＝18,480 ore Lh2 ＝12,700×a2 ＝12,700×1.4 ＝17,780 ore
〔
17.7｛ 1805 ｝ 30.0｛ 3060 ｝ 46.4｛ 4733 ｝ 55.3｛ 5641 ｝ 75.1｛ 7660 ｝
10/3
Cr2 ＝0.293×42.0／4.66＝2.64 Pr2
1 1 e＋ e Lh1 Lh2
1 2 3 4 5
Σ （Pri
Therefore: a2 ＝ 1.4（4T-tapered roller bearings shown in B-136)
Lh＝
Equivalent radial load. Pri kN｛ kgf ｝
From formula (4.12) the mean load, Fm, is:
Cr1 f h1＝ fn ＝0.293×54.5／5.98＝2.67 Pr1 f h2＝ fn
Condition No. i
1 1 〔 18,4809/8 ＋ 17,7809/8
124 ＝3.63 10 There fore the basic rated life, L10h ,from formula (3.3) f h＝0.293×
8/9
〕
＝9,780 hour
L10h ＝500×3.63 ≒24,000 And next, allowable axial load of cylindrical roller bearing is shown in a heading 4.5.
――――――――――――――――――――――――――――――――――――
(Example 5) Find the mean load for spherical roller bearing 23932 (La = 320 kN) when operated under the fluctuating conditions shown in Table 4.7.
The value of coefficient, k, show in table 4.6. k ＝ 0.065 （60＋130） /2＝95mm，n＝2,000 r/min dp＝ Take into consideration that intermittent axial load.
――――――――――――――――――――――――――――――――――――
4
Condition Operating time No. φi i ％
Radial load Fri kN｛ kgf ｝
Axial load Fai kN｛ kgf ｝
Revolution ni rpm
1
5
10｛ 1020 ｝
2｛ 204 ｝
1200
2
10
12｛ 1220 ｝
4｛ 408 ｝
1000
3
60
20｛ 2040 ｝
6｛ 612 ｝
800
4
15
25｛ 2550 ｝
7｛ 714 ｝
600
5
10
30｛ 3060 ｝
10｛ 1020 ｝
400
4
dp・n×10 ＝19×10 The allowable face pressure of the collar, Pt , from Fig.4.13.
Table 4.7
Pt ＝40MPa There fore the allowable axial load, Pz, following 2
Pz ＝0.065×60 ×40＝936N｛95.5kgf｝ and meet a demand Fa max＜0.4×10,000＝4,000N from table 4.6.
A-27
●Boundary Dimensions and Bearing Number Codes
5.1 Boundary dimensions A rolling bearing's major dimensions, known as "boundary dimensions," are shown in Figs. 5.1 - 5.3. To facilitate international bearing interchangeability and economical bearing production, bearing boundary dimensions have been standardized by the International Standards Organization (ISO). In Japan, rolling bearing boundary dimensions are regulated by Japanese Industrial Standards (JIS B 1512). Those boundary dimensions which have been standardized include: bearing bore diameter, outside diameter, width/height, and chamfer dimensions - all important dimensions when considering the compatibility
A-28
●Boundary Dimensions and Bearing Number Codes
standardized, and have been listed here for purposes of future standardization, there are many standard bearing dimensions which are not presently manufactured.
related specifications. Bearing numbers are comprised of a "basic number" followed by "supplementary codes." The makeup and order of bearing numbers is shown in Table 5.2.
Boundary dimensions for radial bearings (excluding tapered roller bearings) are shown in the attached tables.
The basic number indicates general information about a bearing, such as its fundamental type, boundary dimensions, series number, bore diameter code and contact angle. The supplementary codes derive from prefixes and suffixes which indicate a bearing's tolerances, internal clearances, and related specifications.
5.2 Bearing numbers Rolling bearing part numbers indicate bearing type, dimensions, tolerances, internal construction, and other
(Bearing number examples)
6205ZZC3／2A
23034BD1 Lubrication hole/lubrication groove Shell Alvania 2 grease Radial internal clearance C3 shielded (both) Nominal bore diameter 25mm Diameter series 2 Deep groove ball bearing
(when outer diameter is less than 320mm) Type B Nominal bore diameter 170mm Dimension series 0 Width series 3 Spherical roller bearing
240／750BK30
7012CDB／GMP4
Bore diameter: tapered inner ring bore, standard taper ratio 1:30
Tolerances JIS Class 4 Medium preload Back-to-back duplex arrangement Contact angle 15° Nominal bore diameter 60mm Dimension series 0 Angular contact ball bearing
NU320G1C3
Type B Nominal bore diameter 750mm Dimension series 0 Width series 4 Spherical roller bearing
51120L1P5 Radial internal clearance C3 High strength machined brass rivetless cage with square holes Dimension series 3 Cylindrical roller bearing NU type
Tolerances JIS Class 5 High strength, machined brass cage Nominal bore diameter 100mm Diameter series 1 Height series 1 Thrust ball bearing
4T−30208 Nominal bore diameter 40mm Diameter series 2 Width series 0 Tapered roller bearing Spec. 4T (top tapered)
A-29
●Boundary Dimensions and Bearing Number Codes
Table 5.2 Bearing number composition and arrangement Basic number Supplementary prefix code Special application/material/ heat treatment code 4T: ET: E:
4T tapered roller bearings ET tapered roller bearings carburized alloy steel bearings
F:
stainless steel bearings
H:
high speed steel bearings
M:
plated bearings
5S:
ceramic rolling element bearings
HL:
HL (high lubrication) roller bearings
TS2: dimension stabilized bearing for high temperature use (to 160°C) TS3:
TS4:
dimension stabilized bearing for high temperature use (to 200°C) dimension stabilized bearing for high temperature use (to 250°C)
Basic numbers Bearing series code
Dimension series code 1
Width/height series
Diameter series
Deep groove ball bearings (type code 6) 68 69 60 62 63
(1) (1) (1) (0) (0)
8 9 0 2 3
Angular contact ball bearings (type code 7) 78 79 70 72 73
(1) (1) (1) (0) (0)
8 9 0 2 3
Self-aligning ball bearings (type code 1,2) 12 13 22 23
(0) (0) (2) (2)
2 3 2 3
Cylindrical roller bearings (type code NU, N, NF, NNU, NN, etc.) NU10 NU2 NU22 NU3 NU23 NU4 NNU49 NN30
1 (0) 2 (0) 2 (0) 4 3
0 2 2 3 3 4 9 0
Tapered roller bearings (type code 3) 329X 320X 302 322 303 303D 313X 323
2 2 0 2 0 0 1 2
9 0 2 2 3 3 3 3
Bore diameter number bore Code diameter mm
/0.6 /1.5 /2.5
0.6 1.5 2.5
1
1
⋮
⋮
9
9
00 01 02 03
10 12 15 17
/22 /28 /32
22 28 32
04 05 06
20 25 30
⋮
⋮
88 92 96
440 460 480
/500 /530 /560
500 530 560
/2,360 /2,500
2,360 2,500
Contact angle code 1
Code
Contact angle
Angular contact ball bearings （A） Standard contact angle 30˚ B Standard contact angle 40˚ Standard contact angle 15˚ C Tapered roller bearings （B） Contact angle over 10˚ to/including 17˚ C Contact angle over 17˚ D to/including 24˚ Contact angle over 24˚ to/including 32˚
⋮
Spherical roller bearings (type code 2) 239 230 240 231 241 222 232 213 223
3 3 4 3 4 2 3 1 2
9 0 0 1 1 2 2 3 3
Single direction thrust ball bearings (type code 5) 511 512 513 514
1 1 1 1
1 2 3 4
Cylindrical roller thrust bearings (type code 8) 811 812 893
1 1 9
1 2 3
Self-aligning thrust roller bearings (type code 2) 292 9 2 293 9 3 294 9 4
1 Codes in ( ) are not shown in nominal numbers. Note: Please consult NTN Engineering concerning bearing series codes, and supplementary prefix/suffix codes not listed in the above table.
A-30
●Boundary Dimensions and Bearing Number Codes
Supplementary suffix codes Internal modifications code U: Internationally interchangeable tapered roller bearings R: Noninternationally interchangeable tapered roller bearings ST: Low torque tapered roller bearings HT: High axial load use cylindrical roller bearings
1
Cage code
Seal / Shield code
Raceway configuration code
Duplex Internal clearance arrangement code /preload code
L1: High strength, machined brass cage
LLB: Synthetic rubber seal (noncontact type)
K: Tapered inner ring bore, standard taper ratio 1:12
DB: Back-to-back arrangement
F1: Machined carbon steel cage G1: High strength machined brass rivet-less cage with square holes, G2: Pin type cage J: Pressed steel cage T2: Plastic mold cage
LLU: Synthetic rubber K30: seal Tapered inner (contact type) ring bore, standard taper LLH: ratio 1:30 Synthetic rubber seal N: (low-torque type) Snap ring groove ZZ: Steel shield NR: Snap ring groove with snap ring D: Lubrication hole/lubrication groove
DF: Face-to-face arrangement DT: Tandem arrangement D2: Two matched, paired bearings
C2: Internal clearance less than normal (CN): Normal clearance C3: Internal clearance greater than normal
C4: Internal G: Flush ground clearance greater than C3 ＋α: C5: Spacer Internal (α= spacer’s clearance standard width greater than C4 dimensions)
P6: JIS Class 6 P5: JIS Class 5 P4: JIS Class 4 P2: JIS Class 2
/8A: Shell Alvania EP2 grease
3: Inch series tapered roller bearing (ABMA) Class 3
/LP03: Solid grease (for use with solid grease bearings)
/GL: Light preload
00: Inch series tapered roller bearing (ABMA) Class 00
GH: Heavy preload
/3A: Shell Alvania 3 grease
/5K: MULTEMP SRL
0: Inch series tapered roller bearing (ABMA) Class 0
GM: Medium preload
/2A: Shell Alvania 2 grease
2: Inch series tapered roller bearing (ABMA) Class 2
CM: Radial internal clearance for electric motor use
GN: Normal preload
A-31
Tolerance code Lubrication code
/LX11: Barierta JFE552
A-30
●Bearing Tolerances 6. Bearing Tolerances Running accuracy Running accuracy constitutes the acceptable values for inner and outer ring radial runout and axial runout, inner ring side runout, and outer ring outer diameter runout. Allowable rolling bearing tolerances have been established according to precision classes. JIS Class 0 corresponds to normal precision class bearings, and precision becomes progressively higher as the class number becomes smaller; i.e., Class 6 is less precise than Class 5, which is less precise than Class 4, and so on. Table 6.1 indicates which standards and precision classes are applicable to the major bearing types. Table 6.2 shows a relative comparison between JIS B 1514 precision class standards and other standards. For greater detail on allowable error limitations and values, refer to Tables 6.3 - 6.9. Allowable values for chamfer dimensions are shown in Table 6.10, and allowable error limitations and values for radial bearing inner ring tapered bores are shown in Table 6.11.
6.1 Dimensional accuracy and running accuracy Bearing “tolerances” or dimensional accuracy and running accuracy, are regulated by ISO and JIS B 1514 standards (rolling bearing tolerances). For dimensional accuracy, these standards prescribe the tolerances necessary when installing bearings on shafts or in housings. Running accuracy is defined as the allowable limits for bearing runout during operation. Dimensional accuracy Dimensional accuracy constitutes the acceptable values for bore diameter, outer diameter, assembled bearing width, and bore diameter uniformity as seen in chamfer dimensions, allowable inner ring tapered bore deviation and shape error. Also included are, average bore diameter variation average, outer diameter variation, average outer diameter unevenness, as well as raceway width and height variation (for thrust bearings).
Table 6.1 Bearing types and applicable tolerance Applicable standard
Bearing type
Tolerance table
Appliclble tolerance
Deep groove ball bearing
class 0
class 6
class 5
class 4
class 2
Angular contact ball bearings
class 0
class 6
class 5
class 4
class 2
ー
ー
Self-aligning ball bearings
class 0
ー
ー
class 0
class 6
class 5
class 4 class 2
Needle roller bearings
class 0
class 6
class 5
class 4
ー
Spherical roller bearings
class 0
ー
ー
ー
ー
ISO492
Cylindrical roller bearigns
Tapered roller bearings
Table 6.3
metric
ISO492
class 0,6X
class 6
class 5
class 5
ー
Table 6.4
Inch
AFBMA Std.19
class 4
class 2
class 3
class 0
class 00
Table 6.5
J series
ANSI/AFBMA Std.19.1 class K
class N
class C
class B
class A
Table 6.6
class 0
class 6
class 5
class 4
ー
Table 6.7
class 0
ー
ー
ー
ー
Table 6.8
ー
class 5
class 4
ー
Table 6.9
Thrust ball bearings
ISO199
Spherical roller thrust bearings Double direction angular contact thrust ball bearings
NTN standard
ー
Table 6.2 Comparison of tolerance classifications of national standards Standard Japanese industrial standard (JIS)
International Organization for Standardization (ISO)
Tolerance Class class 0,6X
class 6
class 5
class 4
class 2
All type
ISO 492
Normal class Class 6X
Class 6
Class 5
Class 4
Class 2
Radial bearings
ISO 199
Normal class
Class 6
Class 5
Class 4
ー
ISO 578
Class 4
ー
Class 3
Class 0 Class 00 Tapered roller bearings (Inch series)
ー
ー
Class 5A Class 4A
P0
P6
JIS B 1514
ISO 1224 Deutsches Institut fur Normung(ISO)
American National Standards Institute (ANSI) Anti-Friction Bearing Manufacturers (AFBMA)
Bearing Types
DIN 620 1
P5
P4
Thrust ball bearings
ー
Precision instrument bearings
P2
All type
ABEC-3 ABEC-5 ABEC-7 ABEC-9 RBEC-3 RBEC-5
Radial bearings (Except tapered roller bearings)
Class K
Class N Class C Class B
Tapered roller bearings (Metric series)
Class 4
Class 2
ANSI/ABMA Std.20
ABEC-1 RBEC-1
ANSI/ABMA Std.19.1 ANSI/ABMA Std.19
Class 3
Class 0 Class 00 Tapered roller bearings (Inch series)
1 "ABEC" is applied for ball bearings and "RBEC" for roller bearings. Notes 1: JIS B 1514, ISO 492 and 199, and DIN 620 have the same specification level. 2: The tolerance and allowance of JIS B 1514 are a little different from those of AFBMA standards.
A-33
Class A
●Bearing Tolerances
Table 6.3 Tolerance for radial bearings (Except tapered roller bearings) Table 6.3 (1) Inner rings Nominal bore diameter
Single radial plane bore diameter variation
Single plane mean bore diameter deviation
∆dmp
Vdp
d
diameter series 9
mm class 0
over
incl.
high
class 6
low high
class 5
low high
class 4
low high
1
class 2
1
maxdiameter series 0.1
maxdiameter series 2.3.4
class class class class class class class class class class class class class class class 0 6 5 4 2 0 6 5 4 2 0 6 5 4 2
max
max
low high
low
0.6 4） 2.5 2.5 10 10 18
0 0 0
-8 -8 -8
0 0 0
-7 -7 -7
0 0 0
-5 -5 -5
0 0 0
-4 -4 -4
0 0 0
-2.5 -2.5 -2.5
10 10 10
9 9 9
5 5 5
4 2.5 4 2.5 4 2.5
18 30 50
30 50 80
0 0 0
-10 -12 -15
0 0 0
-8 -10 -12
0 0 0
-6 -8 -9
0 0 0
-5 -6 -7
0 0 0
-2.5 -2.5 -4
13 10 15 13 19 15
6 8 9
5 2.5 6 2.5 7 4
80 120 150
120 150 180
0 0 0
-20 -25 -25
0 0 0
-15 -18 -18
0 0 0
-10 -13 -13
0 0 0
-8 -10 -10
0 0 0
-5 -7 -7
180 250 315
250 315 400
0 0 0
-30 -35 -40
0 0 0
-22 -25 -30
0 0 0
-15 -18 -23
0 ー ー
-12 ー ー
0 ー ー
400 500 630
500 630 800
0 0 0
-45 -50 -75
0 0 ー
-35 -40 ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
800 1,000 1,250 1,600
1,000 1,250 1,600 2,000
0 0 0 0
-100 -125 -160 -200
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
max
7 7 7
4 4 4
3 3 3
2.5 2.5 2.5
6 6 6
5 5 5
4 4 4
3 3 3
2.5 2.5 2.5
10 8 12 10 19 15
5 6 7
4 5 5
2.5 8 2.5 9 4 11
6 8 9
5 6 7
4 5 5
2.5 2.5 4
25 19 10 8 5 31 23 13 10 7 31 23 13 10 7
25 19 8 31 23 10 31 23 10
6 8 8
5 7 7
15 11 8 19 14 10 19 14 10
6 8 8
5 7 7
-8 ー ー
38 28 15 12 8 44 31 18 ー ー 50 38 23 ー ー
38 28 12 9 8 44 31 14 ー ー 50 38 18 ー ー
23 17 12 9 8 26 19 14 ー ー 30 23 18 ー ー
ー ー ー
ー ー ー
56 44 ー ー ー 63 50 ー ー ー 94 ー ー ー ー
56 44 ー ー ー 63 50 ー ー ー 94 ー ー ー ー
34 26 ー ー ー 38 30 ー ー ー 55 ー ー ー ー
ー ー ー ー
ー ー ー ー
125 155 200 250
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
8 8 8
125 155 200 250
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー 75 ー ー 94 ー ー 120 ー ー 150 ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
1 The dimensional difference ∆ds of bore diameter to applied for class 4 and 2 is the same as the tolerance of dimentional difference ∆dmp of average bore diameter. However, the dimensional difference is applied to diameter series 0, 1, 2, 3 and 4 against Class 4, and to all the diameter series against Class 2.
Table 6.3 (2) Outer rings Nominal outside diameter
Single plane mean outside diameter deviation
∆Dmp
mm class 0
over
class 6
incl.
high
6 18 30
0 0 0
-8 -8 -9
0 0 0
-7 -7 -8
30 50 80
50 80 120
0 0 0
-11 -13 -15
0 0 0
120 150 180
150 180 250
0 0 0
-18 -25 -30
250 315 400
315 400 500
0 0 0
500 630 800
630 800 1,000
1,000 1,250 1,600 2,000
1,250 1,600 2,000 2,500
2.5 6 18
VDp
open type
D
Single radial plane outside diameter variation
8
low high
class 5
low high
class 4
5
class 2
5
diameter series 9
maxdiameter series 0.1
maxdiameter series 2.3.4
class class class class class class class class class class class class class class class 0 6 5 4 2 0 6 5 4 2 0 6 5 4 2
low high
low high
low
max
0 0 0
-5 -5 -6
0 0 0
-4 -4 -5
0 0 0
-2.5 -2.5 -4
10 9 10 9 12 10
-9 -11 -13
0 0 0
-7 -9 -10
0 0 0
-6 -7 -8
0 0 0
-4 -4 -5
14 11 7 16 14 9 19 16 10
0 0 0
-15 -18 -20
0 0 0
-11 -13 -15
0 0 0
-9 -10 -11
0 0 0
-5 -7 -8
-35 -40 -45
0 0 0
-25 -28 -33
0 0 0
-18 -20 -23
0 0 ー
-13 -15 ー
0 0 ー
-8 -10 ー
0 0 0
-50 -75 -100
0 0 0
-38 -45 -60
0 0 ー
-28 -35 ー
ー ー ー
ー ー ー
ー ー ー
0 0 0 0
-125 -160 -200 -250
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
max
max
7 7 8
4 4 5
3 2.5 3 2.5 4 4
11 9 13 11 19 16
5 7 8
23 19 11 9 5 31 23 13 10 7 38 25 15 11 8
23 19 8 31 23 10 38 25 11
44 31 18 13 8 50 35 20 15 10 56 41 23 ー ー
44 31 14 10 8 50 35 15 11 10 56 41 17 ー ー
26 19 14 10 8 30 21 15 11 10 34 25 17 ー ー
ー ー ー
63 48 28 ー ー 63 48 21 ー ー 94 56 35 ー ー 94 56 26 ー ー 125 75 ー ー ー 125 75 ー ー ー
38 29 21 ー ー 55 34 26 ー ー 75 45 ー ー ー
ー ー ー ー
155 200 250 310
ー ー ー ー
5 5 6
ー ー ー ー
4 2.5 4 2.5 5 4 6 4 7 4 8 5
ー ー ー ー
ー ー ー ー
8 8 9
155 200 250 310
ー ー ー ー
ー ー ー ー
5 5 6
4 4 5
3 3 4
2.5 2.5 4
5 4 5 4 6 5
8 7 10 8 11 10
5 7 8
5 5 6
4 4 5
7 5 8 7 8 8
14 11 8 19 14 10 23 15 11
7 8 8
5 7 8
ー ー ー ー
6 6 7
ー 94 ー ー ー 120 ー ー ー 150 ー ー ー 190 ー ー
ー ー ー ー
5 The dimensional difference ∆Ds of outer diameter to be applied for classes 4 and 2 is the same as the tolerance of dimensional difference ∆Dmp of average outer diameter. However, the dimensional difference is applied to diameter series 0, 1, 2, 3 and 4 against Class 4, and also to all the diameter series against Class 2.
A-34
ー ー ー ー
●Bearing Tolerances
Unitμm
Mean single plane bore diameter variation
Inner ring radial runout
Face runout with bore
Vdmp
Kia
Sd
Inner ring width deviation
Inner ring axial runout (with side) Sia
∆Bs
VBs
2
normal class class class class class 0 6 5 4 2
class class class class class 0 6 5 4 2
max
max
6 6 6
5 5 5
3 2 3 2 3 2
8 9 11
6 8 9
3 2.5 1.5 4 3 1.5 5 3.5 2 5 4 7 5 7 5
15 11 19 14 19 14
class class class 5 4 2
1.5 1.5 1.5
2.5 3.5 3.5
class 0,6
class class class 5 4 2
high
class 2 class 0,6 class 5,4
low high low high low
class class class class class 0 6 5 4 2
high low high low
max
7 7 7
3 1.5 3 1.5 3 1.5
7 7 7
3 3 3
1.5 1.5 1.5
0 0 0
-40 0 -120 0 -120 0
-40 -40 -80
ー 0 -250 ー 0 -250 0 -250 0 -250 0 -250
12 12 5 2.5 1.5 15 15 5 2.5 1.5 20 20 5 2.5 1.5
13 8 15 10 20 10
4 3 5 4 5 4
2.5 2.5 2.5
8 8 8
4 1.5 4 1.5 5 1.5
8 8 8
4 4 5
2.5 2.5 2.5
0 0 0
-120 0 -120 0 -120 -120 0 -120 0 -120 -150 0 -150 0 -150
0 -250 0 -250 0 -250 0 -250 0 -380 0 -250
20 20 5 2.5 1.5 20 20 5 3 1.5 25 25 6 4 1.5
25 13 30 18 30 18
6 5 8 6 8 6
2.5 2.5 5
9 10 10
5 2.5 6 2.5 6 4
9 10 10
5 7 7
2.5 2.5 5
0 0 0
-200 0 -200 0 -200 -250 0 -250 0 -250 -250 0 -250 0 -250
0 -380 0 -380 0 -500 0 -380 0 -500 0 -380
25 25 7 4 30 30 8 5 30 30 8 5
5 6 7
max
modified
class 5,4
3
4 2.5 1.5 4 2.5 1.5 4 2.5 1.5
10 10 10
max
Inner ring width varietion
-40 0 -40 0 -80 0
2.5 2.5 4
23 17 8 6 4 26 19 9 ー ー 30 23 12 ー ー
40 20 10 8 5 50 25 13 ー ー 60 30 15 ー ー
11 7 5 13 ー ー 15 ー ー
13 15 20
8 ー ー
5 ー ー
0 0 0
-300 0 -300 0 -300 -350 0 -350 ー ー -400 0 -400 ー ー
0 -500 0 -500 0 -500 0 -500 0 -630 0 -630
30 30 10 6 5 35 35 13 ー ー 40 40 15 ー ー
34 26 ー ー ー 38 30 ー ー ー 55 ー ー ー ー
65 35 ー ー ー 70 40 ー ー ー 80 ー ー ー ー
ー ー ー ー ー ー ー ー ー
ー ー ー
ー ー ー
ー ー ー
0 0 0
-450 ー -500 ー -750 ー
50 45 ー ー ー 60 50 ー ー ー 70 ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
0 0 0 0
75 94 120 150
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
90 100 120 140
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
-1,000 -1,250 -1,600 -2,000
ー ー ー ー
ー ー ー ー ー ー
ー ー ー
ー ー ー
ー ー ー ー ー ー
ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
80 ー ー ー ー 100 ー ー ー 120 ー ー ー 140 ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
2 To be applied for deep groove ball bearing and angular contact ball bearings. 3 To be applied for individual raceway rings manufactured for combined bearing use. 4 Nominal bore diameter of bearings of 0.6 mm is included in this dimensional division. Unit μm
Single radial plane outside diameter variation VDp 6 capped bearings diameter series 2,3,4 0,1,2,3,4 class 0 class 6 max
Mean single plane outside diameter variation VDmp class 0
class 6
class 5
class 4
class 2
Outer ring radial runout Outside surface inclination Kea
Outside ring axial runout Sea 7
SD
Outer ring width deviation
Outer ring width variation VCs
∆Cs class 0
class 6
max
class 5
class 4
class 2
class 5
max
class 4
class 2
class 5
max
class 4
class 0,6
class 2
all type
max
class 5
class 4
class 2
max
5 5 6
3 3 3
1.5 2 1.5 2 2.5 2
15 15 15
5 5 6
3 3 4
1.5 1.5 2.5
8 8 8
4 4 4
1.5 1.5 1.5
8 8 8
5 5 5
1.5 1.5 2.5
13 16 20
8 7 10 8 11 10
4 5 5
2 3 3.5 2 2.5 4
20 10 7 25 13 8 35 18 10
5 5 6
2.5 4 5
8 8 9
4 4 5
1.5 1.5 2.5
8 10 11
5 5 6
2.5 4 5
30 38 ー
25 30 ー
14 11 19 14 23 15
6 7 8
5 5 6
2.5 3.5 4
40 20 11 7 45 23 13 8 50 25 15 10
5 5 7
10 10 11
5 5 7
2.5 2.5 4
13 14 15
7 8 10
5 5 7
8 5 8 5 10 7
ー ー ー
ー ー ー
26 19 9 30 21 10 34 25 12
7 8 ー
4 5 ー
60 30 18 11 70 35 20 13 80 40 23 ー
7 8 ー
13 13 15
8 10 ー
5 7 ー
18 20 23
10 13 ー
7 8 ー
11 7 5 13 8 7 15 ー ー
ー ー ー
ー ー ー
38 29 14 55 34 18 75 45 ー
ー ー ー
ー ー ー
100 50 25 ー 120 60 30 ー 140 75 ー ー
ー ー ー
18 20 ー
ー ー ー
ー ー ー
25 30 ー
ー ー ー
ー ー ー
18 ー ー 20 ー ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
160 190 220 250
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
10 10 12
9 9 10
16 20 26
6 6 7
94 120 150 190
ー ー ー ー
8 8 9
ー ー ー ー
ー ー ー ー
ー ー ー ー
6 To be applied in case snap rings are not installed on the bearings. 7 To be applied for deep groove ball bearings and angular contact ball bearings. 8 Nominal outer diameter of bearings of 2.5 mm is included in this dimensional division.
A-35
Identical to ∆Bs of inner ring of same bearing
Identical to ∆Bs and VBs of inner ring of same bearing
5 2.5 1.5 5 2.5 1.5 5 2.5 1.5 5 2.5 1.5 6 3 1.5 8 4 2.5
ー ー ー ー
2.5 2.5 4
ー ー ー ー
●Bearing Tolerances
Table 6.4 Tolerance of tapered roller bearings (Metric system) Table 6.4 (1) Inner rings Nominal bore diameter
Single plane mean bore diameter deviation
Single radial plane bore diameter variation
Mean single plane bore diameter variation
∆dmp
Vdp
Vdmp
d
Inner ring radial runout Kia
Face runout with bore Sd
mm class 0,6X
class 5,6
over incl.
class 4
1
class 0,6X
class 6
max
class 5
class 4
class 0,6X
class 6
max
class 5
class 4
class 0,6X
class 6
max
class 5
class 4
max
class class 5 4
max
10 18 30
18 30 50
0 0 0
-12 -12 -12
0 0 0
-7 -8 -10
0 0 0
-5 -6 -8
12 12 12
7 8 10
5 6 8
4 5 6
9 9 9
5 6 8
5 5 5
4 4 5
15 18 20
7 8 10
5 5 6
3 3 4
7 8 8
3 4 4
50 80 120
80 120 180
0 0 0
-15 -20 -25
0 0 0
-12 -15 -18
0 0 0
-9 -10 -13
15 20 25
12 15 18
9 11 14
7 8 10
11 15 19
9 11 14
6 8 9
5 5 7
25 30 35
10 13 18
7 8 11
4 5 6
8 9 10
5 5 6
180 250 315
250 315 400
0 0 0
-30 -35 -40
0 ー ー
-22 ー ー
0 ー ー
-15 ー ー
30 35 40
22 ー ー
17 ー ー
11 ー ー
23 26 30
16 ー ー
11 ー ー
8 ー ー
50 60 70
20 ー ー
13 ー ー
8 ー ー
11 ー ー
7 ー ー
400 500 630
500 630 800
0 0 0
-45 -50 -75
ー ー ー
ー ー ー
ー ー ー
ー ー ー
45 50 75
ー ー ー
ー ー ー
ー ー ー
34 38 56
ー ー ー
ー ー ー
ー ー ー
80 90 105
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
800 1,000
0
-100
ー
ー
ー
ー
100
ー
ー
ー
75
ー
ー
ー
120
ー
ー
ー
ー
ー
1 The dimensional difference ∆ds of bore diameter to be applied for class 4 is the same as the tolerance of dimensional difference ∆dmp of average bore diameter.
Table 6.4 (2) Outer rings Nominal outside diameter
Single plane mean outside diameter deviation ∆Dmp
D
mm class 0,6X
class 5,6
class 4
3
Single radial plane outside diameter variation
Mean single plane outside diameter variation
VDp
VDmp
class 0,6X
class 6
class 5
class 4
class 0,6X
class 6
Outer ring radial runout Kea
Outside surface inclination SD
class 5
class 4
class 0,6X
class 6
class 5
class 4
2
class class 5 4
over
incl.
18 30 50
30 50 80
0 0 0
-12 -14 -16
0 0 0
-8 -9 -11
0 0 0
-6 -7 -9
12 14 16
8 9 11
6 7 8
5 5 7
9 11 12
6 7 8
5 5 6
4 5 5
18 20 25
9 10 13
6 7 8
4 5 5
8 8 8
4 4 4
80 120 150
120 150 180
0 0 0
-18 -20 -25
0 0 0
-13 -15 -18
0 0 0
-10 -11 -13
18 20 25
13 15 18
10 11 14
8 8 10
14 15 19
10 11 14
7 8 9
5 6 7
35 40 45
18 20 23
10 11 13
6 7 8
9 10 10
5 5 5
180 250 315
250 315 400
0 0 0
-30 -35 -40
0 0 0
-20 -25 -28
0 0 0
-15 -18 -20
30 35 40
20 25 28
15 19 22
11 14 15
23 26 30
15 19 21
10 13 14
8 9 10
50 60 70
25 30 35
15 18 20
10 11 13
11 13 13
7 8 10
400 500 630
500 630 800
0 0 0
-45 -50 -75
ー ー ー
ー ー ー
ー ー ー
ー ー ー
45 50 75
ー ー ー
ー ー ー
ー ー ー
34 38 56
ー ー ー
ー ー ー
ー ー ー
80 100 120
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
800 1,000 1,250
1,000 1,250 1,600
0 0 0
-100 -125 -160
ー ー ー
ー ー ー
ー ー ー
ー ー ー
100 125 160
ー ー ー
ー ー ー
ー ー ー
75 84 120
ー ー ー
ー ー ー
ー ー ー
140 165 190
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
max
max
max
max
max
2 The dimensional difference ∆Ds of outside diameter to be applied for class 4 is the same as the tolerance of dimensional difference ∆Dmp of average outside diameter. 3 The dimensional difference ∆ds of bore diameter to be applied for class 4 is the same as the tolerance of dimensional difference ∆dmp of average bore diameter.
A-36
●Bearing Tolerances
Unitμm
Overall width deviation of assembled single Overall width deviation Overall width deviation row tapered roller bearing, or height deviation of assembled double rows of assembled four rows
Inner ring width deviation
Inner ring axial runout (with side)
∆Bs
tapered roller bearing or height eviation
∆Ts
Sia
∆B1s,
class 4
class 0,6
class 6X
class 4,5
high low
high low
class 0,6
class 6X
class 4,5
∆C1s
∆B2s,
class 0,6,5
∆C2s
class 0,6,5
max
high
low
high
low
high
low
high
low
high
low
3 4 4
0 0 0
-120 -120 -120
0 0 0
-50 -50 -50
0 0 0
-200 -200 -240
+200 +200 +200
0 0 0
+100 +100 +100
0 0 0
+200 +200 +200
-200 -200 -200
ー ー +240
ー ー -240
ー ー ー
ー ー ー
4 5 7
0 0 0
-150 -200 -250
0 0 0
-50 -50 -50
0 0 0
-300 -400 -500
+200 +200 +350
0 -200 -250
+100 +100 +150
0 0 0
+200 +200 +350
-200 -200 -250
+300 +400 +500
-300 -400 -500
ー +500 +600
ー -500 -600
8 ー ー
0 0 0
-300 -350 -400
0 0 0
-50 -50 -50
0 -600 ー ー ー ー
+350 +350 +400
-250 -250 -400
+150 +200 +200
0 0 0
+350 ー ー
-250 ー ー
+600 +700 +800
-600 -700 -800
+750 +900 +1,000
-750 -900 -1,000
ー ー ー
0 0 0
-450 -500 -750
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
+900 +1,000 +1,500
-900 -1,000 -1,500
+1,200 +1,200 +1,500
-1,200 -1,200 -1,500
ー
0
-1,000
ー
ー
ー
ー
ー
ー
ー
ー
ー
ー
+1,500
-1,500
+1,500
-1,500
Unitμm
Outer ring axial runout
Outer ring width deviation ∆Cs
Sea
class 4
class 0,6,5,4
class 6X
4
high low
tapered roller bearing or height eviation
Table 6.4 (3) Effective width of outer and inner rings with roller Nominal bore diameter
Effective width deviation of roller and inner ring assembly of tapererd roller bearing
d
∆T1s
Unitμm
Tapered roller bearing outer ring effective width deviation ∆T2s
mm class 0
class 0
class 6X
inf.
high
low
high
low
high
low
0 0 0
-100 -100 -100
10 18 30
18 30 50
+100 +100 +100
0 0 0
+50 +50 +50
0 0 0
+100 +100 +100
0 0 0
+50 +50 +50
0 0 0
0 0 0
-100 -100 -100
50 80 120
80 120 180
+100 +100 +150
0 -100 -150
+50 +50 +50
0 0 0
+100 +100 +200
0 -100 -100
+50 +50 +100
0 0 0
10 10 13
0 0 0
-100 -100 -100
180 250 315
250 315 400
+150 +150 +200
-150 -150 -200
+50 +100 +100
0 0 0
+200 +200 +200
-100 -100 -200
+100 +100 +100
0 0 0
ー ー ー
0 0 ー
-100 -100 ー
ー ー ー
ー ー ー
ー ー ー
max 5 5 5 6 7 8
sup.
inf. sup.
Identical to ∆Bs inner ring of same bearing
T1
incl.
class 6X
over
Master cup sub-unit
T2
Master cone sub-unit
4 To be applied for nominal bore diameters
d
A-37
high low
d
●Bearing Tolerances
Table 6.5 Tolerance for tapered roller bearings of inch system Table 6.5 (1) Inner rings
Unitμm
Nominal bore diameter
Single bore diameter deviation
d
∆ds
mm over
Class 2
Class 4
Class 3
Class 0
Class 00
incl.
high
low
high
low
high
low
high
low
high
low
ー 76.2 266.7
76.2 266.7 304.8
+13 +25 +25
0 0 0
+13 +25 +25
0 0 0
+13 +13 +13
0 0 0
+13 +13 +13
0 0 0
+8 +8 ー
0 0 ー
304.8 609.6 914.4
609.6 914.4 1,219.2
+51 +76 +102
0 0 0
+51 ー ー
0 ー ー
+25 +38 +51
0 0 0
ー ー ー
ー ー ー
ー ー ー
ー ー ー
+127
0
ー
ー
+76
0
ー
ー
ー
ー
ー
1,219.2
Table 6.5 (2) Outer rings
Unitμm
Nominal outside diameter
Single outside diameter deviation
d
∆Ds
mm
over ー 266.7 304.8 609.6 914.4 1,219.2
Class 2
Class 4
Class 3
Class 0
over
incl
over
incl
over
incl
over
incl
over
incl
266.7 304.8 609.6
+25 +25 +51
0 0 0
+25 +25 +51
0 0 0
+13 +13 +25
0 0 0
+13 +13 ー
0 0 ー
+8 ー ー
0 ー ー
+76 +102 +127
0 0 0
+76 ー ー
0 ー ー
+38 +51 +76
0 0 0
ー ー ー
ー ー ー
ー ー ー
ー ー ー
914.4 1,219.2 ー
Table 6.5 (3) Effective width of inner rings with roller and outer rings Nominal bore diameter
Overall width deviation of assembled single row tapered roller bearing ∆Ts
d mm
ー 101.6 304.8 101.6 609.6 304.8 304.8 609.6
609.6 ー
Class 00
incl.
+203 +356 +381 +381 +381
Table 6.5 (4) Radial deflection of inner and outer rings
A-38
●Bearing Tolerances
Master cup sub-unit
T1
Master cone sub-unit
T2
d
d
Unitμm
Effective width deviation of roller and inner ring assembly of tapered roller bearing
Tapered roller bearing outer ring effective width deviation ∆T2s
∆T1s
Class 4
high
Class 2
low
+102 +152 ー
0 -152 ー
ー ー
ー ー
high +102 +102 +178 ー ー
Class 3
low 0 0 1 -178 ー ー
high +102 +102 +102 ー ー
Class 4
low
high
-102 -102 1 -102
+102 +203 ー
0 -102 ー
ー ー
ー ー
ー ー
1 To be applied for nominal bore diameters of 406.400 mm (16 inch) or less.
A-39
Class 2
low
Class 3
high
low
high
low
+102 +102 +203
0 0 1 -203
+102 +102 +102
-102 -102 1 -102
ー ー
ー ー
ー ー
ー ー
●Bearing Tolerances
Table 6.6 Tolerance of tapered roller bearings of J series (Metric system) Table 6.6 (1) Inner rings Single plane mean bore diameter deviation
Nominal bore diameter
∆dmp
Single radial plane bore diameter variation
Mean single plane bore diameter variation
Vdp
Vdmp
d mm
Class
Class
Class
Class
Class
Class
Class
Class
Class
Class
Class
Class
K
N
C
B
K
N
C
B
K
N
C
B
over
incl.
high
low
high
low
high
low
high
low
10 18 30
18 30 50
0 0 0
-12 -12 -12
0 0 0
-12 -12 -12
0 0 0
-7 -8 -10
0 0 0
-5 -6 -8
12 12 12
12 12 12
max 4 4 4
3 3 3
9 9 9
9 9 9
max 5 5 5
4 4 5
50 80 120
80 120 180
0 0 0
-15 -20 -25
0 0 0
-15 -20 -25
0 0 0
-12 -15 -18
0 0 0
-9 -10 -13
15 20 25
15 20 25
5 5 5
3 3 3
11 15 19
11 15 19
5 5 5
5 5 7
180
250
0
-30
0
-30
0
-22
0
-15
30
30
6
4
23
23
5
8
Note: Please consult NTN Engineering for Class A bearings.
Table 6.6 (2) Outer rings Single plane mean outside diameter deviation
Nominal outside diameter
Single radial plane outside Mean single plane outside outer ring diameter variation axial runout diameter variation
∆Dmp
VDmp
VDp
D mm
Class
Class
Class
Class
K
N
C
B
Class Class Class Class K
N
C
Sea
Class Class Class Class
B
K
N
C
max
Class
B
B
over
incl.
high
low
high
low
high
low
high
low
18 30 50
30 50 80
0 0 0
-12 -14 -16
0 0 0
-12 -14 -16
0 0 0
-8 -9 -11
0 0 0
-6 -7 -9
12 14 16
12 14 16
4 4 4
3 3 3
9 11 12
9 11 12
5 5 6
4 5 5
3 3 4
80 120 150
120 150 180
0 0 0
-18 -20 -25
0 0 0
-18 -20 -25
0 0 0
-13 -15 -18
0 0 0
-10 -11 -13
18 20 25
18 20 25
5 5 5
3 3 3
14 15 19
14 15 19
7 8 9
5 6 7
4 4 5
180 250 315
250 315 400
0 0 0
-30 -35 -40
0 0 0
-30 -35 -40
0 0 0
-20 -25 -28
0 0 0
-15 -18 -20
30 35 40
30 35 40
6 8 10
4 5 5
23 26 30
23 26 30
10 13 14
8 9 10
6 6 6
max
max
Note: Please consult NTN Engineering for Class A bearings.
Table 6.6 (3) Effective width of inner and outer rings Nominal bore diameter d
Tapered roller bearing outer ring effective width deviation ∆T2s
Effective width deviation of roller and inner ring assembly of tapered roller bearing ∆T1s Class
mm
Unitμm
Class
Class
N
K
Class
Class
B
K
C
over
incl.
high
low
high
low
high
low high
10 80 120
80 120 180
+100 +100 +150
0 -100 -150
+50 +50 +50
0 0 0
+100 +100 +100
-100 -100 -100
180
250
+150
-150
+50
0
+100
-150
Class
Class
Class
C
B
N
low
high
low
high
low
high
low high
* * *
* * *
+100 +100 +200
0 -100 -100
+50 +50 +100
0 0 0
+100 +100 +100
-100 -100 -150
* * *
* * *
*
*
+200
-100
+100
0
+100
-150
*
*
Note 1: "*" mark are to be manufactured only for combined bearings. 2: Please consult NTN Engineering for Class A bearings.
A-40
low
●Bearing Tolerances
Unitμm
Overall width deviation of assembled single row tapered roller bearing
Inner ring axial runout (with side)
∆Ts
Sia Class
Class
Class
Class
Class
B
K
N
C
B
max
sup
inf
sup
3 4 4
+200 +200 +200
inf
0 +100 0 +100 0 +100
sup
0 0 0
+200 +200 +200
-200 +200 -200 +200 -200 +200
inf
sup
-200 -200 -200
inf
4 5 7
+200 +200 +350
0 +100 -200 +100 -250 +150
0 0 0
+200 +200 +200
-200 +200 -200 +200 -250 +200
-200 -200 -250
8
+350
-250 +150
0
+200
-300 +200
-300
Table 6.6 (4) Runout of inner and outer rings Unitμm Nominal outside diameter
Inner ring radial runout Kia and Outer ring radial runout Kea
D mm
Class
Class
Class
Class
K
N
C
B
max
over
incl.
18 30 50
30 50 80
18 20 25
18 20 25
5 6 6
3 3 4
80 120 150
120 150 180
35 40 45
35 40 45
6 7 8
4 4 4
180 250 315
250 315 400
50 60 70
50 60 70
10 11 13
5 5 5
Note: Please consult NTN Engineering for Class A bearings.
A-41
●Bearing Tolerances
Table 6.7 Tolerance of thrust ball bearings Table 6.7 (1) Inner rings Nominal bore diameter
Unitμm
Single plane mean bore diameter deviation ∆dmp
Single radial plane Thrust bearing shaft washer raceway bore diameter variation (or center washer raceway) thickness variation Vdp
d mm
Si
Class
Class
Class
Class
Class
Class
Class
Class
0,6,5
4
0,6,5
4
0
6
5
4
over
incl.
high
low
high
low
ー 18 30
18 30 50
0 0 0
-8 -10 -12
0 0 0
-7 -8 -10
6 8 9
max 5 6 8
10 10 10
5 5 6
max 3 3 3
2 2 2
50 80 120
80 120 180
0 0 0
-15 -20 -25
0 0 0
-12 -15 -18
11 15 19
9 11 14
10 15 15
7 8 9
4 4 5
3 3 4
180 250 315
250 315 400
0 0 0
-30 -35 -40
0 0 0
-22 -25 -30
23 26 30
17 19 23
20 25 30
10 13 15
5 7 7
4 5 5
400 500
500 630
0 0
-45 -50
0 0
-35 -40
34 38
26 30
30 35
18 21
9 11
6 7
Table 6.7 (2) Outer rings Nominal outside diameter
Unitμm
Single plane mean outside diameter deviation ∆Dmp
Single radial plane outside diameter variation
d
Thrust bearing housing washer raceway thickness variation Se
VDp
mm
Class
Class
Class
Class
Class
Class
Class
Class
0,6,5
4
0,6,5
4
0
6
5
4
over
incl.
high
low
high
low
max
10 18 30
18 30 50
0 0 0
-11 -13 -16
0 0 0
-7 -8 -9
8 10 12
5 6 7
50 80 120
80 120 180
0 0 0
-19 -22 -25
0 0 0
-11 -13 -15
14 17 19
8 10 11
180 250 315
250 315 400
0 0 0
-30 -35 -40
0 0 0
-20 -25 -28
23 26 30
15 19 21
400 500 630
500 630 800
0 0 0
-45 -50 -75
0 0 0
-33 -38 -45
34 38 55
25 29 34
Table 6.7 (3) Height of bearings center washer Unitμm
Nominal bore diameter
Single direction type 1 ∆Ts
d mm over
incl.
high
low
ー 30 50
30 50 80
0 0 0
-75 -100 -125
80 120 180
120 180 250
0 0 0
-150 -175 -200
250 315 400 500
315 400 500 630
0 0 0 0
-225 -300 -350 -400
1 This standard is applied for flat back face bearing of class 0.
A-42
max
According to the tolerance of S1 against "d" or "d2" of the same bearings
●Bearing Tolerances
Table 6.8 Tolerance of spherical thrust roller bearing Table 6.8 (1) Inner rings Nominal bore diameter d mm over incl.
Table 6.8 (2) Outer ring Unitμm
Unitμm
Single plane mean Single radial Face bore diameter deviation plane bore runout diameter with bore variation ∆dmp Sd Vdp high low max max
Nominal outside diameter
Height deviation of single direction thrust bearing ∆Ts
d
Single plane mean outside diameter deviation
mm
∆Dmp
high
low
over
incl.
high
low
50 80 120
80 120 180
0 0 0
-15 -20 -25
11 15 19
25 25 30
+150 +200 +250
-150 -200 -250
120 180 250
180 250 315
0 0 0
-25 -30 -35
180 250 315
250 315 400
0 0 0
-30 -35 -40
23 26 30
30 35 40
+300 +350 +400
-300 -350 -400
315 400 500
400 500 630
0 0 0
-40 -45 -50
400
500
0
-45
34
45
+450
-450
630 800
800 1,000
0 0
-75 -100
Table 6.9 Tolerance of double direction type angular contact thrust ball bearings Table 6.9 (1) Inner rings and bearing height Nominal bore diameter d mm
Class 5
Class 4
Inner ring axial
Unitμm
Height deviation of single direction thrust bearing
Sia
Inner ring width variation VBs
Class 5 Class 4
Class 5 Class 4
Class 5 Class 4
Class 5, Class 4
max
max
max
Single plane mean bore diameter Face runout deviation ∆dmp with bore Single bore diameter deviation ∆ds Sd
runout (with side)
over
incl.
high
low
high
low
18 30 50
30 50 80
0 0 0
-6 -8 -9
0 0 0
-5 -6 -7
8 8 8
4 4 5
5 5 6
3 3 5
5 5 6
80 120 180
120 180 250
0 0 0
-10 -13 -15
0 0 0
-8 -10 -12
9 10 11
5 6 7
6 8 8
5 6 6
250 315
315 400
0 0
-18 -23
0 0
-15 -18
13 15
8 9
10 13
8 10
∆Ts
high
low
2.5 3 4
0 0 0
-300 -400 -500
7 8 10
4 5 6
0 0 0
-600 -700 -800
13 15
7 9
0 0
-900 -1,000
Table 6.9 (2) Outer rings Nominal outside diameter mm
Unitμm
Single plane mean outside diameter deviation ∆Dmp Single outside diameter deviation ∆Ds
Outside surface inclination
Outer ring axial runout
Outer ring width variation
SD
Sea
VCs
Class 5
Class 4
over
incl.
high
low
Class 5
Class 4
30 50 80
50 80 120
-30 -40 -50
-40 -50 -60
8 8 9
4 4 5
120 150 180
150 180 250
-60 -60 -75
-75 -75 -90
10 10 11
5 5 7
250 315 400
315 400 500
-90 -110 -120
-105 -125 -140
13 13 15
8 10 13
max
A-43
Class 5
Class 4
Class 5
max According to tolerance of Sia against "d" of the same bearings
Class 4 max
5 6 8
2.5 3 4
8 8 10
5 5 7
11 13 15
7 8 10
●Bearing Tolerances
6.2 Chamfer measurements and tolerance or allowable values of tapered hole
1
Bore diameter face rs min or r1s min of bearing or outer rs max or r1s max diameter face of bearing (Axial direction)
(Radial direction)
1
1
rsmin or r smin
rs min or r s min
Table 6.10 Allowable critical-value of bearing chamfer Table 6.10 (1) Radial bearing (Except tapered roller bearing)
rsmax or r smax
Side face of inner ring or center washer, or side face of outer ring
Table 6.10 (2) Tapered roller bearings of metric system Unit mm
Unit mm
rs min
1
or r1s min
Nominal bore diameter d over incl.
rs min2
rs max or r1s max Radial direction
Axial direction
0.1
0.2
ー
ー
0.08
ー
ー
0.16
0.3
0.1
ー
ー
0.2
0.4
0.15
ー
ー
0.3
0.6
0.2
ー
ー
0.5
0.8
ー
40
0.6
1
40
ー
0.8
1
0.05
0.3
0.6
1
1.1
1.5
2
2.1
2.5
ー
40
1
2
40
ー
1.3
2
ー
50
1.5
3
50
ー
1.9
3
ー
120
2
3.5
120
ー
2.5
4
ー
120
2.3
4
120
ー
3
5
ー
80
3
4.5
or r1s min 0.3
0.6
1
1.5
2
2.5
3
Nominal bore diameter of bearing "d" or nominal outside diameter "D"
rs max or r1s max
over
incl.
Radial direction
Axial direction
ー
40
0.7
1.4
40
ー
0.9
1.6
ー
40
1.1
1.7
40
ー
1.3
2
ー
50
1.6
2.5
50
ー
1.9
3
ー
120
2.3
3
120
250
2.8
3.5
250
ー
3.5
4
ー
120
2.8
4
120
250
3.5
4.5
250
ー
4
5
ー
120
3.5
5
120
250
4
5.5
250
ー
4.5
6
ー
120
4
5.5
80
220
3.5
5
120
250
4.5
6.5
220
ー
3.8
6
250
400
5
7
400
ー
5.5
7.5
ー
120
5
7
120
250
5.5
7.5
250
400
6
8
ー
280
4
6.5
280
ー
4.5
7
ー
100
3.8
6
100
280
4.5
6
3
4
280
ー
5
7
400
ー
6.5
8.5
ー
280
5
8
ー
180
6.5
8
280
ー
5.5
180
ー
7.5
9
4
ー
ー
6.5
ー
180
7.5
10
5
ー
ー
8
180
ー
9
11
3
5
8 9
6
10
6
ー
ー
10
13
7.5
ー
ー
12.5
17
9.5
ー
ー
15
19
12
ー
ー
18
24
15
ー
ー
21
30
19
ー
ー
25
38
2 These are the allowable minimum dimensions of the chamfer dimension "r" or "r1" and are described in the dimensional table. 3 Inner rings shall be in accordance with the division of "d" and outer rings with that of "D". Note: This standard will be applied to the bearings whose dimensional series (refer to the dimensional table) are specified in the standard of ISO 355 or JIS B 1512. Further, please consult NTN Engineering for bearings other than.
1 These are the allowable minimum dimensions of the chamfer dimension "r" and are described in the dimensional table.
A-44
●Bearing Tolerances
Table 6.10 (3) Thrust bearings
Table 6.11 (1) Tolerance and allowable values (Class 0) of tapered hole of radial bearings Unitμm ∆dmp
d mm
∆d1mp - ∆dmp
Vdp 1
over
incl.
high
low
high
low
max
+ 22 + 27 + 33
0 0 0
+ 15 + 18 + 21
0 0 0
9 11 13
0.05
0.1
10 18
10 18 30
0.08
0.16
0.1
0.2
30 50 80
50 80 120
+ 39 + 46 + 54
0 0 0
+ 25 + 30 + 35
0 0 0
16 19 22
0.15
0.3
0.2
0.5
120 180 250
180 250 315
+ 63 + 72 + 81
0 0 0
+ 40 + 46 + 52
0 0 0
40 46 52
0.3
0.8
0.6
1.5
315 400 500
400 500 630
+ 89 + 97 +110
0 0 0
+ 57 + 63 + 70
0 0 0
57 63 70
1
2.2
1.1
2.7
1.5
3.5
630 800 1,000 1,250
800 1,000 1,250 1,600
+125 +140 +165 +195
0 0 0 0
+ 80 + 90 +105 +125
0 0 0 0
ー ー ー ー
2
4
2.1
4.5
3
5.5
4
6.5
Table 6.11 (2) Allowable variations for radial bearing inner ring tapered bores Standard taper ratio 1:30 (Class 0) Units μm
6 7.5 9.5
15 19
∆dmp
d mm
5
12
2
∆d1mp - ∆dmp
Vdp 1
over
incl.
over
below
over
below
max
50 80 120
80 120 180
+15 +20 +25
0 0 0
+30 +35 +40
0 0 0
19 22 40
180 250 315
250 315 400
+30 +35 +40
0 0 0
+46 +52 +57
0 0 0
46 52 57
2
+63 0 63 +45 0 400 500 +50 0 +70 0 70 500 630 21 -2.09382c4425.1332 T Tf8.00604 TD(0 -2.129143.091 408.779 m70 0Tj0 -27b38 TD9599)Tj0 -2.1832 T TD5.5 1 Applies to all radial flat planes of inner ring tapered bore. 2 Does not apply to diameter series 7 and 8. Note: Quantifiers
1 For a standard taper ratio of 1:12 d1＝d＋ B 12 1 For a standard taper ratio of 1:30 d1＝d＋ B 30
∆dmp ：Dimensional difference of the average bore diameter within the flat surface at the theoretical small end of the tapered bore. ∆d1mp ：Dimensional difference of the average bore diameter within the flat surface at the theoretical large end of the tapered bore. Vdp ：Unevenness of the bore diameter with the flat surface B ：Nominal width of inner ring α ：Half of the tapered bore’s nominal taper angle For a standard taper ratio of 1:12 α＝2° 23′ 9.4″ For a standard taper ratio of 1:30 α＝0° 57′ 7.4″
A-45
●Bearing Tolerances
6.3 Bearing tolerance measurement methods
Table 6.12 shows some of the major methods of measuring rotation tolerances.
For reference, measurement methods for rolling bearing tolerances are in JIS B 1515.
Table 6.12 Rotation tolerance measurement methods
Characteristic tolerance
Measurement method Measuring load
Measuring load
For inner ring radial runout, record the total indicator reading (TIR)
Inner ring radial runout (Kia)
Measuring load
Measuring load
For outer ring radial runout, record the total indicator reading (TIR) after one revolution.
Outer ring radial runout (Kea)
Measuring load
Measuring load
For inner ring axial runout, record the total indicator reading (TIR) after rotating the inner ring one revolution.
Inner ring axial runout (Sia)
Measuring load
Measuring load
Outer ring axial runout (Sea)
For inner ring side runout with bore, record the total indicator reading (TIR) after rotating the inner ring one revolution with a tapered mandrel.
Inner ring side runout with bore (Sd)
1.2rs max
Outer ring outside surface inclination (SD)
For outer ring axial runout, record the total indicator reading (TIR) after rotating the inner ring one revolution.
1.2rs max Reinforcing plate
A-46
For outer ring outside surface inclination, record the total indicator reading (TIR) after aligning the ring with the reinforcing plate and rotating it one revolution.
●Bearing Fits 7 Bearing Fits ¡Raceway and shaft or housing abrasion caused by creeping and fretting corrosion ¡Seizing caused by loss of internal clearances ¡Increased noise and lowered rotational accuracy due to raceway groove deformation
7.1 Interference For rolling bearings, inner and outer rings are fixed on the shaft or in the housing so that relative movement does not occur between fitted surfaces during operation or under load. This relative movement (referred to as "creep") between the fitted surfaces of the bearing and the shaft or housing can occur in a radial direction, an axial direction, or in the direction of rotation. To help prevent this creeping movement, bearing rings and the shaft or housing are installed with one of three interference fits, a "tight fit" (also called shrink fit), "transition fit," or "loose fit" (also called clearance fit), and the degree of interference between their fitted surfaces varies. The most effective way to fix the fitted surfaces between a bearing's raceway and shaft or housing is to apply a "tight fit." The advantage of this tight fit for thin walled bearings is that it provides uniform load support over the entire ring circumference without any loss of load carrying capacity. However, with a tight fit, ease of installation and disassembly is lost; and when using a non-separable bearing as the floating-side bearing, axial displacement is not possible. For this reason, a tight fit cannot be recommended in all cases.
Please refer to insert pages A-93 - A94 for information concerning diagnosis of these conditions.
7.3 Fit selection Selection of a proper fit is dependent upon thorough analysis of bearing operating conditions, including consideration of: ¡Shaft and housing material, wall thickness, finished surface accuracy, etc. ¡Machinery operating conditions (nature and magnitude of load, rotational speed, temperature, etc.) 7.3.1 "Tight fit," "transition fit," or "loose fit" (1) For raceways under rotating loads, a tight fit is necessary. (Refer to Table 7.1) "Raceways under rotating loads" refers to raceways receiving loads rotating relative to their radial direction. For raceways under static loads, on the other hand, a loose fit is sufficient. (Example) Rotating inner ring load = the direction of the radial load on the inner ring is rotating relatively (2) For non-separable bearings, such as deep groove ball bearings, it is generally recommended that either the inner ring or outer ring be given a loose fit.
7.2 The necessity of a proper fit In some cases, improper fit may lead to damage and shorten bearing life, therefore it is necessary to make a careful analysis in selecting a proper fit. Some of the negative conditions caused by improper fit are listed below. ¡Raceway cracking, early peeling and displacement of raceway Table 7.1 Radial load and bearing fit
Illustration Static load
Ring load
Fit
Rotating inner ring load
Inner ring : Tight fit
Static outer ring load
Outer ring : Loose fit
Outer ring: Rotating
Static inner ring load
Inner ring : Loose fit
Inner ring: Rotating
Rotating outer ring load
Outer ring : Tight fit
Bearing rotation Inner ring: Rotatring Outer ring: Stationary
Unbalanced load
Inner ring: Stationary Outer ring: Rotating
Static load
Unbalanced load
Inner ring: Stationary
Outer ring: Stationary
A-47
●Bearing Fits
7.3.2 Recommended Fits Bearing fit is governed by the selection tolerances for bearing shaft diameters and housing bore diameters. Widely used fits for 0 Class tolerance bearings and various shaft and housing bore diameter tolerances are shown in Table 7.1. Generally-used, standard fits for most types of bearings and operating conditions are shown in Tables 7.2 - 7.7.
shown in formulae (7.1). ∆ dT = 0.0015 d ∆T ……………………………………(7.3) ∆ dT : Required effective interference for temperature difference μm ∆T : Difference between bearing temperature
and ambient temperature ˚C d : Bearing bore diameter mm
(3) Fitted surface variation and required interference Interference between fitted surfaces is reduced by roughness and other slight variations of these surfaces which are flattened in the fitting process. The degree of reduced interference depends upon the finish treatment of these surfaces, but in general it is necessary to assume the following interference reductions. For ground shafts: 1.0∼2.5μm For lathed shafts: 5.0∼7.0μm
Table 7.2: Fits for radial bearings Table 7.3: Fits for thrust bearings Table 7.4: Fits for electric motor bearings Table 7.6: Fits for inch series tapered roller bearings (ANSI Class 4) Table 7.7: Fits for inch series tapered roller bearings (ANSI Class 3 and 0) Table 7.5. shows fits and their numerical values. For special fits or applications, please consult NTN Engineering.
(4) Maximum interference When bearing rings are installed with an interference fit, tension or compression stress may occur along their raceways. If interference is too great, this may cause damage to the rings and reduce bearing life. For these reasons, maximum interference should not exceed the previously mentioned ratio of 1:1,000 of shaft or outside diameter.
7.3.3 Interference minimum and maximum values The following points should be considered when it is necessary to calculate the interference for an application: ¡In calculating the minimum required amount of interference keep in mind that: 1) interference is reduced by radial loads 2) interference is reduced by differences between bearing temperature and ambient temperature 3) interference is reduced by variation of fitted surfaces ¡Maximum interference should be no more than 1:1000 of the shaft diameter or outer diameter. Required interference calculations are shown below.
7.3.4 Other details (1) Tight interference fits are recommended for, ¡Operating conditions with large vibration or shock loads ¡Applications using hollow shafts or housings with thin walls ¡Applications using housings made of light alloys or plastic
(1) Radial loads and required interference Interference between inner rings mounted on solid shafts is reduced when acted upon by radial loads. Calculation of the minimum required amount of interference in such cases is shown in formulae (7.1) and (7.2). Fr ≦ 0.3 Cor 1/2 ∆ dF = 0.08 (d・Fr / B) 1/2 = 0.25 (d・Fr / B) Fr ＞ 0.3 Cor ∆ dF = 0.02 (Fr / B) = 0.2 (Fr / B)
(2) Loose interference fits are preferable for, ¡Applications requiring high running accuracy ¡Applications using small sized bearings or thin walled bearings
N ｛kgf ｝
Housing
｝………(7.1)
G6
G7 H7
Class 0
N ｛kgf ｝
｝………(7.2)
H8 H6
J6 J7 K6 K7
∆ Dmp
M6 M7 N6 N7
Where,
P6 P7
∆ dF : Required effective interference for load μm d : Nominal bore diameter mm B : Inner ring width mm Fr : Radial load N｛kgf｝ Cor : Basic static rated load N｛kgf｝
Loose fit
Transition fit Tight fit
Types of fits Tight fit
Transition fit
p6
(2) Temperature difference and required interference Interference between inner rings and steel shafts is reduced as a result of temperature increases (difference between bearing temperature and ambient temperature, ∆T) caused by bearing rotation. Calculation of the minimum required amount of interference in such cases is
Class 0
k5 h5 h6
∆dmp
J5
J6
g5 g6
Shafts Fig 7.1
A-48
k6
m5 m6
n5 n6
●Bearing Fits
(3) Consideration must also be given to the fact that fit selection will effect internal bearing clearance selection. (refer to page insert A-56)
(4) A particular type of fit is recommended for SL type cylindrical roller bearings.
Table 7.2 General standards for radial bearing fits (JIS Class 0, 6, 6X) Table 7.2 (1) Load Nature conditions, Fit of load magnitude
Tight fit / Transition fit
Indeterminate direction load Rotating inner ring load
Light or 1 fluctuating variable load
1
Normal load
Load conditions, magnitude Ball bearing
Static inner ring load
Transition fit
Centric axial load only
Transition fit
Inner ring axial displacement unnecessary
All loads
Spherical roller bearings
Tolerance class
Shaft diameter mm over incl
Tolerance class
∼ 18 18 ∼ 100 100 ∼ 200
h5 js6 k6
∼ 40 40 ∼ 140 140 ∼ 200
js6 k6 m6
18 100 140 200
js5 k5 m5 m6 n6
40 100 140 200
∼ 40 ∼ 100 ∼ 140 ∼ 200 ∼ 400
k5 m5 m6 n6 p6
40 65 100 140 280
∼ 40 ∼ 65 ∼ 100 ∼ 140 ∼ 280 ∼ 500
k5 m5 m6 n6 p6 r6
Alteration of inner clearances to accommodate fit is not a consideration with single-row angular contact bearings and tapered roller bearings. Therefore, k5 and m5 may be substituted for k6 and m6.
50 ∼ 140 140 ∼ 200 200 ∼
n6 p6 r6
50 ∼ 100 100 ∼ 140 140 ∼ 200
n6 p6 r6
Use bearings with larger internal clearances than CN clearance bearings.
g6
When greater accuracy is required use g5. For large bearings, f6 may be used.
h6
When greater accuracy is required use h5.
js6
General; depending on the fit, shaft and inner rings are not fixed.
∼ 18 ∼ 100 ∼ 140 ∼ 200 ∼ 280
g6 All shaft diameters
All shaft diameters
js6
All shaft diameters h6
All shaft diameters
Tolerance class When greater accuracy is required js5, k5, and m5 may be substituted for js6, k6, and m6.
g6
h6
All shaft diameters
Shaft diameter mm over incl
Remarks
Shaft diameter mm over incl
Heavy 1 load or shock load Inner ring axial displacement possible
Cylindrical roller bearing Tapered roller bearing
js6
All shaft diameters
Table 7.2 (2) Fit with shaft (fits for tapered bore bearings (Class 0) with adapter assembly/withdrawal sleeve) All loads
All bearing types
All shaft diameters
Tolerance class
h9 / IT5 2 h10 / IT7
2
1 Standards for light loads, normal loads, and heavy loads Light loads: equivalent radial load ≦ 0.06 Cr Normal loads: 0.06 Cr ＜equivalent radial load ≦ 0.12 Cr Heavy loads: 0.12 Cr ＜equivalent radial load 2 IT5 and IT7 show shaft roundness tolerances, cylindricity tolerances, and related values. Note: All values and fits listed in the above tables are for solid steel shafts.
A-49
General applications Transmission shafts, etc.
●Bearing Fits
Table 7.2 (3) Housing fits
Nature Housing Fit of load
Load conditions, magnitude
Tolerance class
Outer ring axial displacement 2
Remarks
Loose fit Transition or loose fit
Rotating outer ring load or static outer ring load
Solid or split housing
G7 also acceptable for large type bearings as well as outer rings and housings with large temperature differences.
H7
Displacement possible
G7
Easy displacement
H8
Displacement possible
Shaft and inner rings reach high temperature
G7
Easy displacement
F7
Easy displacement
Requires silent operation
H6
Displacement possible
Js6
Displacement not possible (in principle)
Applies primarily to ball bearings
K6
Displacement not possible (in principle)
Applies primarily to roller bearings
All loads Light
1
to normal load
High rotation accuracy required with light to normal loads
Tight to transition fit Tight fit
Solid housing
Direction Inner ring static indeterminate load or outer load ring rotating load
Light to normal load
Js7
F7 also acceptable for large type bearings as well as outer rings and housings with large temperature differences.
Displacement possible When greater accuracy is required substitute Js6 for Js7 and K6 for K7.
Normal to heavy load
K7
Displacement not possible (in principle)
Heavy shock load
M7
Displacement not possible
Light or variable load
M7
Displacement not possible
Normal to heavy load
N7
Displacement not possible
Applies primarily to ball bearings
Heavy load (thin wall housing) or heavy shock load
P7
Displacement not possible
Applies primarily to roller bearings
Loose fit
Centered axial load only - Loose fit
Select a tolerance class that will provide clearance between outer ring and housing.
1 Standards for light loads, normal loads, and heavy loads Light loads: equivalent radial load ≦ 0.06 Cr Normal loads: 0.06 Cr ＜equivalent radial load ≦ 0.12 Cr Heavy loads: 0.12 Cr ＜ equivalent radial load 2 Indicates whether or not outer ring axial displacement is possible with non-separable type bearings. Note 1: All values and fits listed in the above tables are for cast iron or steel housings. 2: In cases where only a centered axial load acts on the bearing, select a tolerance class that will provide clearance in the axia direction for the outer ring.
A-50
●Bearing Fits
Table 7.3 Standard fits for thrust bearings (JIS Class 0 and 6) Table 7.3 (1) Shaft fits Load conditions
Fit
Shaft diameter mm over incl
Tolerance class
All thrust bearings
Centered axial load only
Transition fit
All sizes
js6 or h6
Inner ring static load
Transition fit
All sizes
js6
Inner ring rotating load or direction indeterminate load
Transition fit
∼ 200 200 ∼ 400 400 ∼
k6 or js6 m6 or k6 n6 or m6
Self-aligning roller thrust bearings
Combined load
Bearing type
Tight fit
Table 7.3 (2) Housing fits Bearing type
Load conditions
All thrust bearings
Centered axial load only
Remarks
Select a tolerance class that will provide clearance between outer ring and housing. Loose fit
Combined load
Self-aligning roller thrust bearings
Tolerance class
Fit
H8
Greater accuracy required with thrust ball bearings
Outer ring static load
H7
Direction Indeterminate Transition fit load or outer ring rotating load
K7
Normal operating conditions
M7
For relatively large radial loads
Note: All values and fits listed in the above tables are for cast iron or steel housings.
Table 7.4 Fits for electric motor bearings Bearing type
Shaft fits Shaft diameter mm Tolerance class Over incl.
Housing bore diameter Housing fits
Tolerance class
Deep groove ball bearings
∼ 18 18 ∼ 100 100 ∼ 160
j5 k5 m5
All sizes
H6 or J6
Cylindrical roller bearings
∼ 40 40 ∼ 160 160 ∼ 200
k5 m5 n6
All sizes
H6 or J6
A-51
●Bearing Fits
Table 7.5 Numeric value table of fitting for radial bearing of 0 class Table 7.5 (1) Fitting against shaft Nominal bore diameter of bearing
Single plane1 mean bore diameter deviation
g5 bearing
g6 shaft
bearing
h5 shaft
bearing
h6 shaft
bearing
j5 shaft
bearing
js5 shaft
bearing
j6 shaft
bearing
shaft
∆dmp
d mm over
incl
high
low
3
6
0
-8
4T∼ 9L
4T∼ 12L
8T∼ 5L
8T∼ 8L
11T∼ 2L
10.5T ∼ 2.5L
14T∼ 2L
6
10
0
-8
3T∼ 11L
3T∼ 14L
8T∼ 6L
8T∼ 9L
12T∼ 2L
11T ∼ 3L
15T∼ 2L
10
18
0
-8
2T∼ 14L
2T∼ 17L
8T∼ 8L
8T∼ 11L
13T∼ 3L
12T ∼ 4L
16T∼ 3L
18
30
0
-10
3T∼ 16L
3T∼ 20L
10T∼ 9L
10T∼ 13L
15T∼ 4L
14.5T ∼ 4.5L
19T∼ 4L
30
50
0
-12
3T∼ 20L
3T∼ 25L
12T∼ 11L
12T∼ 16L
18T∼ 5L
17.5T ∼ 5.5L
23T∼ 5L
50
80
0
-15
5T∼ 23L
5T∼ 29L
15T∼ 13L
15T∼ 19L
21T∼ 7L
21.5T ∼ 6.5L
27T∼ 7L
80
120
0
-20
8T∼ 27L
8T∼ 34L
20T∼ 15L
20T∼ 22L
26T∼ 9L
27.5T ∼ 7.5L
33T∼ 9L
120 140 160
140 160 180
0
-25
11T∼32L
11T∼ 39L
25T∼ 18L
25T∼25L
32T∼11L
34T ∼ 9L
39T∼11L
180 200 225
200 225 250
0
-30
15T∼35L
15T∼ 44L
30T∼ 20L
30T∼29L
37T∼13L
40T ∼10L
46T∼13L
250 280
280 315
0
-35
18T∼40L
18T∼ 49L
35T∼ 23L
35T∼32L
42T∼16L
46.5T∼11.5L
51T∼16L
315 355
355 400
0
-40
22T∼43L
22T∼ 54L
40T∼ 25L
40T∼36L
47T∼18L
52.5T∼12.5L
58T∼18L
400 450
450 500
0
-45
25T∼47L
25T∼ 60L
45T∼ 27L
45T∼40L
52T∼20L
58.5T∼13.5L
65T∼20L
J7
Js7
K6
1 Above table is not applicable to tapered roller bearings whose bore diameter is 30mm or less.
Table 7.5 (2) Fitting against housing Nominal outside diameter of bearing
Single plane 2 mean outside diameter deviation
d
∆Dmp
G7 housing
bearing
H6 housing
bearing
H7 housing
bearing
J6 housing
bearing
housing
bearing
housing
bearing
housing
bearing
mm over
incl
high.
low.
6
10
0
-8
5L∼ 28L
0∼ 17L
0∼ 23L
4T∼ 13L
7T∼ 16L
7.5T∼15.5L
7T∼ 10L
10
18
0
-8
6L∼ 32L
0∼ 19L
0∼ 26L
5T∼ 14L
8T∼ 18L
9T ∼17L
9T∼ 10L
18
30
0
-9
7L∼ 37L
0∼ 22L
0∼ 30L
5T∼ 17L
9T∼ 21L
10.5T∼19.5L
11T∼ 11L
30
50
0
-11
9L∼ 45L
0∼ 27L
0∼ 36L
6T∼ 21L
11T∼ 25L
12.5T∼23.5L
13T∼ 14L
50
80
0
-13
10L∼ 53L
0∼ 32L
0∼ 43L
6T∼ 26L
12T∼ 31L
15T ∼28L
15T∼ 17L
80
120
0
-15
12L∼ 62L
0∼ 37L
0∼ 50L
6T∼ 31L
13T∼ 37L
17.5T∼32.5L
18T∼ 19L
120
150
0
-18
14L∼ 72L
0∼ 43L
0∼ 58L
7T∼ 36L
14T∼ 44L
20T ∼38L
21T∼ 22L
150
180
0
-25
14L∼ 79L
0∼ 50L
0∼ 65L
7T∼ 43L
14T∼ 51L
20T ∼45L
21T∼ 29L
180
250
0
-30
15L∼ 91L
0∼ 59L
0∼ 76L
7T∼ 52L
16T∼ 60L
23T ∼53L
24T∼ 35L
250
315
0
-35
17L∼104L
0∼ 67L
0∼ 87L
7T∼ 60L
16T∼ 71L
26T ∼61L
27T∼ 40L
315
400
0
-40
18L∼115L
0∼ 76L
0∼ 97L
7T∼ 69L
18T∼ 79L
28.5T∼68.5L
29T∼ 47L
400
500
0
-45
20L∼128L
0∼ 85L
0∼108L
7T∼ 78L
20T∼ 88L
31.5T∼76.5L
32T∼ 53L
2 Above table is not application to tapered roller bearings whose outside diameter is 150mm or less. Note: T = tight, L = loose
A-52
●Bearing Fits
Unitμm
js6
k5
bearing
shaft
k6
bearing
shaft
m5
bearing
shaft
bearing
m6 shaft
n6
bearing
shaft
bearing
p6 shaft
bearing
r6 shaft
bearing
shaft
Nominal bore diameter of bearing d mm over
incl.
12T ∼ 4L
14T∼ 1T
17T∼ 1T
17T∼ 4T
20T∼ 4T
24T∼ 8T
28T∼ 12T
−
−
3
6
12.5T∼ 4.5L
15T∼ 1T
18T∼ 1T
20T∼ 6T
23T∼ 6T
27T∼10T
32T∼ 15T
−
−
6
10
13.5T∼ 5.5L
17T∼ 1T
20T∼ 1T
23T∼ 7T
26T∼ 7T
31T∼12T
37T∼ 18T
−
−
10
18
16.5T∼ 6.5L
21T∼ 2T
25T∼ 2T
27T∼ 8T
31T∼ 8T
38T∼15T
45T∼ 22T
−
−
18
30
20T ∼ 8L
25T∼ 2T
30T∼ 2T
32T∼ 9T
37T∼ 9T
45T∼17T
54T∼ 26T
−
−
30
50
24.5T∼ 9.5L
30T∼ 2T
36T∼ 2T
39T∼11T
45T∼11T
54T∼20T
66T∼ 32T
−
−
50
80
31T ∼11L
38T∼ 3T
45T∼ 2T
48T∼13T
55T∼13T
65T∼23T
79T∼ 37T
−
−
80
120
120 140 160
140 160 180
37.5T∼12.5L
46T∼3T
53T∼3T
58T∼15T
65T∼15T
77T∼27T
93T∼43T
113T∼ 63T 115T∼ 65T 118T∼ 68T
44.5T∼14.5L
54T∼4T
63T∼4T
67T∼17T
76T∼17T
90T∼31T
109T∼50T
136T∼ 77T 139T∼ 80T 143T∼ 84T
180 200 225
200 225 250
51T ∼16L
62T∼4T
71T∼4T
78T∼20T
87T∼20T
101T∼34T
123T∼56T
161T∼ 94T 165T∼ 98T
250 280
280 315
58T ∼18L
69T∼4T
80T∼4T
86T∼21T
97T∼21T
113T∼37T
138T∼62T
184T∼108T 190T∼114T
315 355
355 400
65T ∼20L
77T∼5T
90T∼4T
95T∼23T
108T∼23T
125T∼40T
153T∼68T
211T∼126T 217T∼132T
400 450
450 500
Unitμm
K7 housing
bearing
M7 housing
bearing
N7 housing
bearing
P7 housing
bearing
Nominal outside diameter of bearing d mm over
incl.
10T∼ 13L
15T∼ 8L
19T∼ 4L
24T∼ 1L
6
10
12T∼ 14L
18T∼ 8L
23T∼ 3L
29T∼ 3L
10
18
15T∼ 15L
21T∼ 9L
28T∼ 2L
35T∼ 5L
18
30
18T∼ 18L
25T∼ 11L
33T∼ 3L
42T∼ 6L
30
50
21T∼ 22L
30T∼ 13L
39T∼ 4L
52T∼ 8L
50
80
25T∼ 25L
35T∼ 15L
45T∼ 5L
59T∼ 9L
80
120
28T∼ 30L
40T∼ 18L
52T∼ 6L
68T∼ 10L
120
150
28T∼ 37L
40T∼ 25L
52T∼ 13L
68T∼ 3L
150
180
33T∼ 43L
46T∼ 30L
60T∼ 16L
79T∼ 3L
180
250
36T∼ 51L
52T∼ 35L
66T∼ 21L
88T∼ 1L
250
315
40T∼ 57L
57T∼ 40L
73T∼ 24L
98T∼ 1L
315
400
45T∼ 63L
63T∼ 45L
80T∼ 28L
400
500
108T∼ 0
A-53
●Bearing Fits
Table 7.6 Fits for inch series tapered roller bearing (ANSI class 4) Table 7.6 (1) Fit with shaft
Unitμm
Shaft diameter Load conditions
d over
mm incl.
Cone bore tolerance ∆ds high low
Shaft tolerance
Extreme fits
1
Remark
Rotating cone load Stationary cone load
high
low
max
Normal loads, no shock
∼ 76.2 76.2 ∼ 304.8 304.8 ∼ 609.6 609.6 ∼ 914.4
+13 +25 +51 +76
0 0 0 0
+ 38 + 64 +127 +190
+ 25 + 38 + 76 +114
38T 64T 127T 190T
Heavy loads or shock loads
∼ 76.2 76.2 ∼ 304.8 304.8 ∼ 609.6 609.6 ∼ 914.4
+13 +25 +51 +76
0 0 0 0
+ 64 + 38 38T ∼ 12T Use average tight cone fit of 0.5μm/mm, (0.0005 inch/inch) of cone bore, use a minimum fit of 25μm, 0.0010 inch tight.
Cone axial displacement on shaft necessary
∼ 76.2 76.2 ∼ 304.8 304.8 ∼ 609.6 609.6 ∼ 914.4
+13 +25 +51 +76
0 0 0 0
+ + + +
Cone axial displacement on shaft unnecessary
∼ 76.2 76.2 ∼ 304.8 304.8 ∼ 609.6 609.6 ∼ 914.4
+13 +25 +51 +76
0 0 0 0
13 25 51 76 0 0 0 0
-
min ∼ ∼ ∼ ∼
12T 13T 25T 38T
0 0 0 0
13T 25T 51T 76T
∼ ∼ ∼ ∼
13L 25L 51L 76L
13 25 51 76
0 0 0 0
∼ ∼ ∼ ∼
13L 50L 102L 152L
This extreme fits is applicable to little shock load conditions.
This extreme fits is not applicable to shock load conditions.
Table 7.6 (2) Fit with housing
Load conditions
Unitμm
Housing bore diameter D mm over incl.
Cup O.D. tolerance ∆Ds high low
Housing bore tolerance
Extreme fits
high
low
max
1
Types of fit min
76.2 127.0 304.8 609.6
∼ ∼ ∼ ∼ ∼
76.2 127.0 304.8 609.6 914.4
+25 +25 +25 +51 +76
0 0 0 0 0
+ 76 + 76 + 76 +152 +229
+ 51 + 51 + 51 +102 +152
26L 26L 26L 51L 76L
∼ ∼ ∼ ∼ ∼
76L 76L 76L 152L 229L
loose fit
Light and normal loads: cup axially adjustable
76.2 127.0 304.8 609.6
∼ ∼ ∼ ∼ ∼
76.2 127.0 304.8 609.6 914.4
+25 +25 +25 +51 +76
0 0 0 0 0
+ 25 + 25 + 51 + 76 +127
0 0 0 + 26 + 51
25T 25T 25T 25T 25T
∼ ∼ ∼ ∼ ∼
25L 25L 51L 76L 127L
tight interference fit
Heavy loads: cup not axially displaceable
76.2 127.0 304.8 609.6
∼ ∼ ∼ ∼ ∼
76.2 127.0 304.8 609.6 914.4
+25 +25 +25 +51 +76
0 0 0 0 0
-
13 25 25 25 25
- 38 - 51 - 51 - 76 -102
63T 76T 76T 127T 178T
∼ ∼ ∼ ∼ ∼
13T 25T 25T 25T 25T
76.2 127.0 304.8 609.6
∼ ∼ ∼ ∼ ∼
76.2 127.0 304.8 609.6 914.4
+25 +25 +25 +51 +76
0 0 0 0 0
-
13 25 25 25 25
- 38 - 51 - 51 - 76 -102
63T 76T 76T 127T 178T
∼ ∼ ∼ ∼ ∼
13T 25T 25T 25T 25T
Light and normal loads: cup easily axially displaceable Stationary cup load Rotating cup load
Cup not axially displaceable
1 For bearings with negation deviation indicated in bearing tables,same fit applies. Note 1: For bearings higher than class 2, consult NTN Engineering. 2: T= tight, L= loose
A-54
tight fit
●Bearing Fits
●Bearing Internal Clearance and Preload 8.
Bearing Internal Clearance and Preload
8.1 Bearing internal clearance
8.2
Bearing internal clearance (initial clearance) is the amount of internal clearance a bearing has before being installed on a shaft or in a housing.
The internal clearance of a bearing under operating conditions (effective clearance) is usually smaller than the same bearing's initial clearance before being installed and operated. This is due to several factors including bearing fit, the difference in temperature between the inner and outer rings, etc. As a bearing's operating clearance has an effect on bearing life, heat generation, vibration, noise, etc.; care must be taken in selecting the most suitable operating clearance.
As shown in Fig. 8.1, when either the inner ring or the outer ring is fixed and the other ring is free to move, displacement can take place in either an axial or radial direction. This amount of displacement (radially or axially) is termed the internal clearance and, depending on the direction, is called the radial internal clearance or the axial internal clearance.
Internal clearance selection
Effective internal clearance: The internal clearance differential between the initial clearance and the operating (effective) clearance (the amount of clearance reduction caused by interference fits, or clearance variation due to the temperature difference between the inner and outer rings) can be calculated by the following formula:
When the internal clearance of a bearing is measured, a slight measurement load is applied to the raceway so the internal clearance may be measured accurately. However, at this time, a slight amount of elastic deformation of the bearing occurs under the measurement load, and the clearance measurement value (measured clearance) is slightly larger than the true clearance. This discrepancy between the true bearing clearance and the increased amount due to the elastic deformation must be compensated for. These compensation values are given in Table 8.1. For roller bearings the amount of elastic deformation can be ignored.
δeff ＝δo −（δf ＋δt ）…………………（8.1） where, δeff : Effective internal clearance, mm δo : Bearing internal clearance, mm δf : Reduced amount of clearance due to interference, mm δt : Reduced amount of clearance due to temperature differential of inner and outer r, mm
The internal clearance values for each bearing class are shown in Tables 8.3 through 8.11.
Table 8.1 Adjustment of radial internal clearance based on measured load Unitμm
δ2
Nominal Bore Diameter Measuring Load d mm N｛kgf｝ over incl.
δ
10 1 18 50
δ1
18 50 200
24.5 49 147
｛2.5｝ ｛5｝ ｛15｝
Radial Clearance Increase C2
CN
3∼4 4∼5 6∼8
4 5 8
C3 C4 C5 4 6 9
4 6 9
4 6 9
1 This diameter is included in the group.
Table 8.2 Examples of applications where bearing clearances other than normal clearance are used Operating conditions
Applications Railway vehicle axles
With heavy or shock load, clearance is great. Vibration screens
Radial clearance =δ Axial clearance =δ1＋δ2
C3，C4 C4
Tractors and final speed regulators
C4
Paper making machines and driers
C3，C4
Rolling mill table rollers
C3
To reduce noise and vibration when rotating.
Micromotors
C2，CM
To reduce shaft runout, clearance is adjusted.
Main spindles of lathes (Double-row cylindrical roller bearings)
C9NA， C0NA
Shaft or inner ring is heated.
A-56
C3
Railway vehicle traction motors
With direction indeterminate load, both inner and outer rings are tight-fitted.
Fig. 8.1 Internal clearance
Selected clearance
●Bearing Internal Clearance and Preload
temperature difference between the two rings can be even greater. The amount of internal clearance is thus further reduced by the differential expansion of the two rings.
(1) Reduced clearance due to interference When bearings are installed with interference fits on shafts and in housings, the inner ring will expand and the outer ring will contract; thus reducing the bearings' internal clearance. The amount of expansion or contraction varies depending on the shape of the bearing, the shape of the shaft or housing, dimensions of the respective parts, and the type of materials used. The differential can range from approximately 70% to 90% of the effective interference.
δt ＝α・∆T・Do ………………………… (8.3) where, δt : Amount of reduced clearance due to heat differential, mm α : Bearing steel linear expansion coefficient 12.5 × 10-6/˚C ∆T : Inner/outer ring temperature differential, ℃ Do : Outer ring raceway diameter, mm
δf ＝ (0.70∼0.90) ∆deff …………………… (8.2) where, δf : Reduced amount of clearance due to interference, mm ∆deff : Effective interference, mm
Outer ring raceway diameter, Do, values can be approximated by using formula (8.4) or (8.5). For ball bearings and spherical roller bearings, Do ＝ 0.20 (d ＋ 4.0D) ……………………… (8.4) For roller bearings (except self-aligning), Do ＝ 0.25 (d ＋ 3.0D) ……………………… (8.5) where, d : Bearing bore diameter, mm D : Bearing outside diameter, mm
(2) Reduced internal clearance due to inner/outer ring temperature difference. During operation, normally the outer ring will range from 5 to 10℃ cooler than the inner ring or rotating parts. However, if the cooling effect of the housing is large, the shaft is connected to a heat source, or a heated substance is conducted through the hollow shaft; the
Table 8.3 Radial internal clearance of deep groove ball bearings Nominal bore diameter d mm over incl.
Unitμm
C3
CN
C2
C4
min
max
min
max
min
max
min
C5 max
min
max
ー 2.5 6
2.5 6 10
0 0 0
6 7 7
4 2 2
11 13 13
10 8 8
20 23 23
ー ー 14
ー ー 29
ー ー 20
ー ー 37
10 18 24
18 24 30
0 0 1
9 10 11
3 5 5
18 20 20
11 13 13
25 28 28
18 20 23
33 36 41
25 28 30
45 48 53
30 40 50
40 50 65
1 1 1
11 11 15
6 6 8
20 23 28
15 18 23
33 36 43
28 30 38
46 51 61
40 45 55
64 73 90
65 80 100
80 100 120
1 1 2
15 18 20
10 12 15
30 36 41
25 30 36
51 58 66
46 53 61
71 84 97
65 75 90
105 120 140
120 140 160
140 160 180
2 2 2
23 23 25
18 18 20
48 53 61
41 46 53
81 91 102
71 81 91
114 130 147
105 120 135
160 180 200
180 200 225
200 225 250
2 2 2
30 35 40
25 25 30
71 85 95
63 75 85
117 140 160
107 125 145
163 195 225
150 175 205
230 265 300
250 280 315
280 315 355
2 2 3
45 55 60
35 40 45
105 115 125
90 100 110
170 190 210
155 175 195
245 270 300
225 245 275
340 370 410
355 400 450
400 450 500
3 3 3
70 80 90
55 60 70
145 170 190
130 150 170
240 270 300
225 250 280
340 380 420
315 350 390
460 510 570
500 560
560 630
10 10
100 110
80 90
210 230
190 210
330 360
310 340
470 520
440 490
630 690
A-57
●Bearing Internal Clearance and Preload
Table 8.4 Radial internal clearance of self-aligning ball bearings Nominal bore diameter d mm over
incl.
Bearing with cylindrical bore C2 min max
min
C3 min max
Normal max
C4 min
max
C5 min max
2.5 6 10
6 10 14
1 2 2
8 9 10
5 6 6
15 17 19
10 12 13
20 25 26
15 19 21
25 33 35
21 27 30
33 42 48
14 18 24
18 24 30
3 4 5
12 14 16
8 10 11
21 23 24
15 17 19
28 30 35
23 25 29
37 39 46
32 34 40
50 52 58
30 40 50
40 50 65
6 6 7
18 19 21
13 14 16
29 31 36
23 25 30
40 44 50
34 37 45
53 57 69
46 50 62
66 71 88
65 80 100
80 100 120
8 9 10
24 27 31
18 22 25
40 48 56
35 42 50
60 70 83
54 64 75
83 96 114
76 89 105
108 124 145
120 140
140
10 15
38 44
30 35
68 80
60 70
100 120
90 110
135 161
125 150
175 210
160
Table 8.5 Radial internal clearance of double row and duplex angular contact ball bearings Nominal bore diameter
C2
C1
Unitμm
C3
Normal
C4
d mm over
incl.
min
max
ー 10 18
10 18 30
3 3 3
8 8 10
30 50 80
50 80 100
3 3 3
100 120 150 180
120 150 180 200
3 3 3 3
min
max
min
max
min
max
min
max
6 6 6
12 12 12
8 8 10
15 15 20
15 15 20
22 24 32
22 30 40
30 40 55
10 11 13
8 11 13
14 17 22
14 17 22
25 32 40
25 32 40
40 50 60
55 75 95
75 95 120
15 16 18 20
15 16 18 20
30 33 35 40
30 35 35 40
50 55 60 65
50 55 60 65
75 80 90 100
110 130 150 180
140 170 200 240
Note: The clearance group in the table is applied only to contact angles in the table below.
Table 8.6 Radial internal clearance of bearings for electric motor Contact angle symbol
C 1 A B
Nominal contact angle
15˚ 30˚ 40˚
Unitμm
Applicable clearance group
Nominal bore diameter d mm over incl.
C1，C2 C2，Normal，C3 Normal，C3，C4
1 Usually not to be indicated
Radial internal clearance CM Deep groove ball bearings Cylindrical roller bearings min max min max
10 (incl.) 18 24
18 24 30
4 5 5
11 12 12
ー ー 15
ー ー 30
30 40 50
40 50 65
9 9 12
17 17 22
15 20 25
30 35 40
65 80 100
80 100 120
12 18 18
22 30 30
30 35 35
45 55 60
120 140 160
140 160 180
24 24 ー
38 38 ー
40 50 60
65 80 90
180
200
ー
ー
65
100
Note 1: Suffix CM is added to bearing numbers. 2: Non-interchangeable clearance 3: This diameter is included in the group.
A-58
●Bearing Internal Clearance and Preload
Unitμm
Nominal bore diameter
Bearing with tapered bore C2 min max
Normal
C3
C4
d mm
C5
min
max
min
max
min
max
min
max
over
incl.
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
2.5 6 10
6 10 14
ー 7 9
ー 17 20
ー 13 15
ー 26 28
ー 20 23
ー 33 39
ー 28 33
ー 42 50
ー 37 44
ー 55 62
14 18 24
18 24 30
12 14 18
24 27 32
19 22 27
35 39 47
29 33 41
46 52 61
40 45 56
59 65 80
52 58 73
72 79 99
30 40 50
40 50 65
23 29 35
39 47 56
35 42 50
57 68 81
50 62 75
75 90 108
69 84 100
98 116 139
91 109 130
123 144 170
65 80 100
80 100 120
40 45
68 74
60 65
98 110
90 100
130 150
120 140
165 191
155 180
205 240
120 140
140 160
Table 8.7 Radial internal clearance of cylindrical roller bearings, needle roller bearings (Interchangeable, cylindrical bore bearings) Nominal bore diameter d mm over incl.
Normal
C2
Unitμm
C3
C4
C5
min
max
min
max
min
max
min
max
min
max
― 10 24
10 24 30
0 0 0
25 25 25
20 20 20
45 45 45
35 35 35
60 60 60
50 50 50
75 75 75
30 40 50
40 50 65
5 5 10
30 35 40
25 30 40
50 60 70
45 50 60
70 80 90
60 70 80
85 100 110
80 95 110
105 125 140
65 80 100
80 100 120
10 15 15
45 50 55
40 50 50
75 85 90
65 75 85
100 110 125
90 105 125
125 140 165
130 155 180
165 190 220
120 140 160
140 160 180
15 20 25
60 70 75
60 70 75
105 120 125
100 115 120
145 165 170
145 165 170
190 215 220
200 225 250
245 275 300
180 200 225
200 225 250
35 45 45
90 105 110
90 105 110
145 165 175
140 160 170
195 220 235
195 220 235
250 280 300
275 305 330
330 365 395
250 280 315
280 315 355
55 55 65
125 130 145
125 130 145
195 205 225
190 200 225
260 275 305
260 275 305
330 350 385
370 410 455
440 485 535
355 400 450
400 450 500
100 110 110
190 210 220
190 210 220
280 310 330
280 310 330
370 410 440
370 410 440
460 510 550
510 565 625
600 665 735
A-59
― 65 70
― 90 95
●Bearing Internal Clearance and Preload
Table 8.8 Radial internal clearance of cylindrical roller bearings, needle roller bearings (non-interchangeable) Nominal bore diameter d mm over incl.
Bearing with cylindrical bore C1NA min max
C2NA min max
NA1 min max
C3NA min max
C4NA min max
C5NA min max
ー 10 18
10 18 24
5 5 5
10 10 10
10 10 10
20 20 20
20 20 20
30 30 30
35 35 35
45 45 45
45 45 45
55 55 55
ー 65 65
ー 75 75
24 30 40
30 40 50
5 5 5
10 12 15
10 12 15
25 25 30
25 25 30
35 40 45
40 45 50
50 55 65
50 55 65
60 70 80
70 80 95
80 95 110
50 65 80
65 80 100
5 10 10
15 20 25
15 20 25
35 40 45
35 40 45
50 60 70
55 70 80
75 90 105
75 90 105
90 110 125
110 130 155
130 150 180
100 120 140
120 140 160
10 15 15
25 30 35
25 30 35
50 60 65
50 60 65
80 90 100
95 105 115
120 135 150
120 135 150
145 160 180
180 200 225
205 230 260
160 180 200
180 200 225
15 20 20
35 40 45
35 40 45
75 80 90
75 80 90
110 120 135
125 140 155
165 180 200
165 180 200
200 220 240
250 275 305
285 315 350
225 250 280
250 280 315
25 25 30
50 55 60
50 55 60
100 110 120
100 110 120
150 165 180
170 185 205
215 240 265
215 240 265
265 295 325
330 370 410
380 420 470
315 355 400 450
355 400 450 500
30 35 45 50
65 75 85 95
65 75 85 95
135 150 170 190
135 150 170 190
200 225 255 285
225 255 285 315
295 330 370 410
295 330 370 410
360 405 455 505
455 510 565 625
520 585 650 720
1 For bearings with normal clearance, only NA is added to bearing numbers. Ex. NU310NA, NN03020KNAP5
Table 8.9 Axial internal clearance of metric double row and duplex tapered roller bearings (except series 329X, 330, 322C, 323C) Nominal bore diameter d mm over incl.
Contact angleα≦27˚ (e ≦ 0.76) Normal
C2
C3
C4
min
max
min
max
min
max
min
max
18 24 30
24 30 40
25 25 25
75 75 95
75 75 95
125 125 165
125 145 165
170 195 235
170 195 210
220 245 280
40 50 65
50 65 80
20 20 20
85 85 110
85 110 130
150 175 220
175 195 240
240 260 325
240 280 325
305 350 410
80 100 120
100 120 140
45 45 45
150 175 175
150 175 175
260 305 305
280 350 390
390 480 520
390 455 500
500 585 630
140 160 180
160 180 200
60 80 100
200 220 260
200 240 260
340 380 420
400 440 500
540 580 660
520 600 660
660 740 820
200 225 250
225 250 280
120 160 180
300 360 400
300 360 400
480 560 620
560 620 700
740 820 920
720 820 920
900 1,020 1,140
280 315 355 400
315 355 400 500
200 220 260 300
440 480 560 600
440 500 560 620
680 760 860 920
780 860 980 1,100
1,020 1,120 1,280 1,400
1,020 1,120 1,280 1,440
1,260 1,380 1,580 1,740
where, ∆r = radial internal clearance, μm ∆a = axial internal clearance, μm e = constant, see bearing tables
Note: Radial internal clearance is approximately obtained from: ∆r = 0.667・e・∆a
A-60
●Bearing Internal Clearance and Preload
Unitμm
Nominal bore diameter d mm over incl.
Bearing with tapered bore C9NA2 min max
C0NA2 min max
C1NA min max
NA1 min max
C2NA min max
C3NA min max
5 5 5
5 10 10
7 7 7
17 17 17
10 10 10
20 20 20
20 20 20
30 30 30
35 35 35
45 45 45
45 45 45
55 55 55
ー 10 18
10 18 24
5 5 5
10 12 15
10 10 10
20 20 20
10 12 15
25 25 30
25 25 30
35 40 45
40 45 50
50 55 65
50 55 65
60 70 80
24 30 40
30 40 50
5 10 10
15 20 25
10 15 20
20 30 35
15 20 25
35 40 45
35 40 45
50 60 70
55 70 80
75 90 105
75 90 105
90 110 125
50 65 80
65 80 100
10 15 15
25 30 35
20 25 30
35 40 45
25 30 35
50 60 65
50 60 65
80 90 100
95 105 115
120 135 150
120 135 150
145 160 180
100 120 140
120 140 160
15 20 20
35 40 45
30 30 35
45 50 55
35 40 45
75 80 90
75 80 90
110 120 135
125 140 155
165 180 200
165 180 200
200 220 240
160 180 200
180 200 225
25 25 30
50 55 60
40 40 45
65 65 75
50 55 60
100 110 120
100 110 120
150 165 180
170 185 205
215 240 265
215 240 265
265 295 325
225 250 280
250 280 315
30 35 45 50
65 75 85 95
45 50 60 70
75 90 100 115
65 75 85 95
135 150 170 190
135 150 170 190
200 225 255 285
225 255 285 315
295 330 370 410
295 330 370 410
360 405 455 505
315 355 400 450
355 400 450 500
2 C9NA, C0NA and C1NA are applied only to precision bearings of Class 5 and higher.
Unitμm
Contact angleα＞ 27˚ (e ＞ 0.76) C2 min
max
Normal min max
C3 min
Nominal bore diameter
max
C4 min
max
d mm over incl.
10 10 10
30 30 40
30 30 40
50 50 70
50 60 70
70 80 100
70 80 90
90 100 120
18 24 30
24 30 40
10 10 10
40 40 50
40 50 60
70 80 100
80 90 110
110 120 150
110 130 150
140 160 190
40 50 65
50 65 80
20 20 20
70 70 70
70 70 70
120 120 120
130 150 160
180 200 210
180 210 210
230 260 260
80 100 120
100 120 140
30 ー ー
100 ー ー
100 ー ー
160 ー ー
180 ー ー
240 ー ー
240 ー ー
300 ー ー
140 160 180
160 180 200
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
ー ー ー
200 225 250
225 250 280
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
ー ー ー ー
280 315 355 400
315 355 400 500
A-61
●Bearing Internal Clearance and Preload
Table 8.10 Radial internal clearance of spherical roller bearings Nominal bore diameter d mm
Bearing with cylindrical bore C2 min max
Normal min max
C3 min max
C4 min max
C5 min max
over
incl.
14 18 24
18 24 30
10 10 15
20 20 25
20 20 25
35 35 40
35 35 40
45 45 55
45 45 55
60 60 75
60 60 75
75 75 95
30 40 50
40 50 65
15 20 20
30 35 40
30 35 40
45 55 65
45 55 65
60 75 90
60 75 90
80 100 120
80 100 120
100 125 150
65 80 100
80 100 120
30 35 40
50 60 75
50 60 75
80 100 120
80 100 120
110 135 160
110 135 160
145 180 210
145 180 210
180 225 260
120 140 160
140 160 180
50 60 65
95 110 120
95 110 120
145 170 180
145 170 180
190 220 240
190 220 240
240 280 310
240 280 310
300 350 390
180 200 225
200 225 250
70 80 90
130 140 150
130 140 150
200 220 240
200 220 240
260 290 320
260 290 320
340 380 420
340 380 420
430 470 520
250 280 315
280 315 355
100 110 120
170 190 200
170 190 200
260 280 310
260 280 310
350 370 410
350 370 410
460 500 550
460 500 550
570 630 690
355 400 450
400 450 500
130 140 140
220 240 260
220 240 260
340 370 410
340 370 410
450 500 550
450 500 550
600 660 720
600 660 720
750 820 900
500 560 630
560 630 710
150 170 190
280 310 350
280 310 350
440 480 530
440 480 530
600 650 700
600 650 700
780 850 920
780 850 920
1,000 1,100 1,190
710 800 900
800 900 1,000
210 230 260
390 430 480
390 430 480
580 650 710
580 650 710
770 860 930
770 860 930
1,010 1,120 1,220
1,010 1,120 1,220
1,300 1,440 1,570
1,000 1,120 1,250
1,120 1,250 1,400
290 320 350
530 580 640
530 580 640
780 860 950
780 860 950
1,020 1,120 1,240
1,020 1,120 1,240
1,330 1,460 1,620
1,330 1,460 1,620
1,720 1,870 2,080
Table 8.11 Axial internal clearance of four points contact ball bearings. Nominal bore diameter
C2
Unit μm
CN
C3
C4
d mm over
incl.
min
max
min
max
min
max
min
max
17 40 60
40 60 80
26 36 46
66 86 96
56 76 86
106 126 136
96 116 126
146 166 176
136 156 166
186 206 226
80 100 140 180
100 140 180 220
56 66 76 96
106 126 156 176
96 116 136 156
156 176 196 216
136 156 176 196
196 216 236 256
186 206 226 246
246 266 296 316
A-62
●Bearing Internal Clearance and Preload
Unitμm
Nominal bore diameter
Bearing with tapered bore C2 min max
Normal
C3
C4
d mm
C5
min
max
min
max
min
max
min
max
over
incl.
ー 15 20
ー 25 30
ー 25 30
ー 35 40
ー 35 40
ー 45 55
ー 45 55
ー 60 75
ー 60 75
ー 75 95
14 18 24
18 24 30
25 30 40
35 45 55
35 45 55
50 60 75
50 60 75
65 80 95
65 80 95
85 100 120
85 100 120
105 130 160
30 40 50
40 50 65
50 55 65
70 80 100
70 80 100
95 110 135
95 110 135
120 140 170
120 140 170
150 180 220
150 180 220
200 230 280
65 80 100
80 100 120
80 90 100
120 130 140
120 130 140
160 180 200
160 180 200
200 230 260
200 230 260
260 300 340
260 300 340
330 380 430
120 140 160
140 160 180
110 120 140
160 180 200
160 180 200
220 250 270
220 250 270
290 320 350
290 320 350
370 410 450
370 410 450
470 520 570
180 200 225
200 225 250
150 170 190
220 240 270
220 240 270
300 330 360
300 330 360
390 430 470
390 430 470
490 540 590
490 540 590
620 680 740
250 280 315
280 315 355
210 230 260
300 330 370
300 330 370
400 440 490
400 440 490
520 570 630
520 570 630
650 720 790
650 720 790
820 910 1,000
355 400 450
400 450 500
290 320 350
410 460 510
410 460 510
540 600 670
540 600 670
680 760 850
680 760 850
870 980 1,090
870 980 1,090
1,100 1,230 1,360
500 560 630
560 630 710
390 440 490
570 640 710
570 640 710
750 840 930
750 840 930
960 1,070 1,190
960 1,070 1,190
1,220 1,370 1,520
1,220 1,370 1,520
1,500 1,690 1,860
710 800 900
800 900 1,000
530 570 620
770 830 910
770 830 910
1,030 1,120 1,230
1,030 1,120 1,230
1,300 1,420 1,560
1,300 1,420 1,560
1,670 1,830 2,000
1,670 1,830 2,000
2,050 2,250 2,470
1,000 1,120 1,250
1,120 1,250 1,400
A-63
●Bearing Internal Clearance and Preload
displacement does not occur. Thus, the natural frequency of the shaft is increased, which is suitable for high speeds.
8.3 Preload Normally, bearings are used with a slight internal clearance under operating conditions. However, in some applications, bearings are given an initial load; this means that the bearings' internal clearance is negative before operation. This is called "preload" and is commonly applied to angular ball bearings and tapered roller bearings.
Preload is also used to prevent or suppress shaft runout, vibration, and noise; improve running accuracy and locating accuracy; reduce smearing, and regulate rolling element rotation. Also, for thrust ball and roller bearings mounted on horizontal shafts, preloading keeps the rolling elements in proper alignment.
8.3.1 Purpose of preload Giving preload to a bearing results in the rolling element and raceway surfaces being under constant elastic compressive forces at their contact points. This has the effect of making the bearing extremely rigid so that even when load is applied to the bearing, radial or axial shaft
Method
Basic pattern
Applicable bearings
The most common method of preloading is to apply an axial load to two duplex bearings so that the inner and outer rings are displaced axially in relation to each other. This preloading method is divided into fixed position preload and constant pressure preload.
Object
Fixed position preload
Maintaining accuracy of Precision rotating shaft, angular contact preventing ball bearings vibration increasing rigidity
Tapered roller bearings, thrust Increasing ball bearings, bearing rigidity angular contact ball bearings
Characteristics Preloading is accomplished by a predetermined offset of the rings or by using spacers. For the standard preload see Table 8.13 Preload is accomplished by adjusting a threaded screw. The amount of preload is set by measuring the starting torque or axial displacement. Relationship between the starting torque M and preload T is approximately given by the following formulas:for duplex angular contact ball bearings:
Applications Grinding machines, lathes, milling machines, measuring instruments
Lathes, milling machines, differential gears of automotives, printing machines, wheel axles
for duplex tapered roller bearings:
Constant pressure preload
Angular contact ball bearings, deep groove ball bearings, precision tapered roller bearings
Tapered roller bearings with steep angle, spherical roller thrust bearings, thrust ball bearings
Note: In the above formulas
Maintaining accuracy and preventing vibration and noise with a constant amount of preload without being affected by loads or temperature
Preloading is accomplished by using coil or belleville springs. Recommended preloads are as follows: for deep groove ball bearings: 4∼10 d N 0.4∼1.0 d ｛kgf｝ for angular contact ball bearings: see Table 8.13
Preventing smearing on raceway of non-loaded side under axial loads
Preload is accomplished by using coil or belleville springs. Recommended preloads are as follows: for thrust ball bearings: 1.9 -13 T1=0.42 (nCoa) ×10 N 1.9 -13 =3.275(nCoa) ×10 ｛kgf｝ T2=0.00083 Coa N｛kgf｝ which ever is greater for spherical roller thrust bearings: T=0.025 Coa0.8 N =0.0158 Coa0.8 ｛kgf｝
dp = pitch diameter of bearing, mm dp = (Bore+Outside dia) / 2
T = preload, N The starting torque M however, is greatly influenced by lubricants and a period of run-in time.
A-64
Internal grinding machines, electric motors, high speed shafts in small machines, tension reels
Rolling mills, extruding machines
d = bearing bore, mm n = number of revolutions, r/min Coa = basic static axial load rating, N
●Bearing Internal Clearance and Preload
8.3.2 Preloading methods and amounts The basic pattern, purpose and characteristics of bearing preloads are shown in Table 8.12. The definite position preload is effective for positioning the two bearings and also for increasing the rigidity. Due to the use of a spring for the constant pressure preload, the preloading amount can be kept constant, even when the distance between the two bearings fluctuates under the influence of operating heat and load.
8.3.3 Preload and rigidity The increased rigidity effect preloading has on bearings is shown in Fig. 8.2. When the offset inner rings of the two paired angular contact ball bearings are pressed together, each inner ring is displaced axially by the amount δ0 and is thus given a preload, F0, in the direction. Under this condition, when external axial load Fa is applied, bearing!will have an increased , displacement by the amount δa and bearing @s displacement will decrease. At this time the loads applied to bearing!and @ are FI and FII, respectively.
Also, the standard preloading amount for the paired angular contact ball bearings is shown in Table 8.13. Light and normal preload is applied to prevent general vibration, and medium and heavy preload is applied especially when rigidity is required.
Under the condition of no preload, bearing I will be displaced by the amount δb when axial load Fa is applied. Since the amount of displacement, δa, is less than δb, it indicates a higher rigidity for δa.
Bearing2 Bearing1
Axial load
Fa Fo
Fo
Bearing2 Outer ring Steel ball Inner ring
δo δb
(1) Under free from preload δo (2) Under preloading
δo
Bearing1
δa
δo δo
Inner ring displacement Fo : Preload
δo
Fo δa F2
δa
(3) Under preloading and applied load
Fa F1 Fa
Fo
Inner ring displacement F1= F2+ Fa Fa: External axial load
δa
F2 δ1 δo
δ2 δo F1= F2+ Fa
Fig. 8.2 Fixed position preload versus axial displacement
A-65
Axial displacement
●Bearing Internal Clearance and Preload
Table 8.13 The normal preload of duplex arrangement angular contact ball bearings Nominal bore diameter d mm
Bearing 78C
Low
Normal
over
inch
12 18
12 18 32
10｛ 1｝ 29｛ 3｝
32 40 50
40 50 65
65 80 90
79C，HSB9C
Central
-
Heavy
Low
Low
Normal
98｛ 10｝
10｛ 1｝ 29｛ 3｝ 78｛ 8｝ 20｛ 2｝ 49｛ 5｝ 98｛ 10｝ 29｛ 3｝ 98｛10｝ 196｛ 20｝
147｛ 15｝ 29｛ 3｝ 78｛ 8｝ 196｛ 20｝ 39｛ 4｝ 98｛ 10｝ 390｛ 40｝ 49｛ 5｝ 118｛ 12｝
196｛ 20｝ 245｛ 25｝ 294｛ 30｝
294｛ 30｝ 490｛ 50｝ 590｛ 60｝
80 90 95
29｛ 3｝ 98｛10｝ 196｛ 20｝ 49｛ 5｝ 147｛15｝ 294｛ 30｝ 49｛ 5｝ 147｛15｝ 294｛ 30｝
390｛ 40｝ 78｛ 8｝ 196｛ 20｝ 590｛ 60｝ 98｛10｝ 245｛ 25｝ 590｛ 60｝ 98｛10｝ 245｛ 25｝
390｛ 40｝ 490｛ 50｝ 490｛ 50｝
785｛ 80｝ 98｛10｝ 294｛ 30｝ 980｛100｝ 147｛15｝ 390｛ 40｝ 980｛100｝ 147｛15｝ 390｛ 40｝
95 100 105
100 105 110
49｛ 5｝ 147｛15｝ 294｛ 30｝ 49｛ 5｝ 147｛15｝ 294｛ 30｝ 78｛ 8｝ 196｛20｝ 490｛ 50｝
590｛ 60｝ 118｛12｝ 294｛ 30｝ 590｛ 60｝ 118｛12｝ 294｛ 30｝ 980｛100｝ 118｛12｝ 294｛ 30｝
685｛ 70｝ 1,470｛150｝ 147｛15｝ 390｛ 40｝ 685｛ 70｝ 1,470｛150｝ 196｛20｝ 590｛ 60｝ 685｛ 70｝ 1,470｛150｝ 196｛20｝ 590｛ 60｝
110 120 140
120 140 150
78｛ 8｝ 196｛20｝ 490｛ 50｝ 980｛100｝ 147｛15｝ 390｛ 40｝ 880｛ 90｝ 1,960｛200｝ 196｛20｝ 590｛ 60｝ 98｛10｝ 294｛30｝ 590｛ 60｝ 1,270｛130｝ 196｛20｝ 490｛ 50｝ 980｛100｝ 2,450｛250｝ 294｛30｝ 785｛ 80｝ 147｛15｝ 390｛40｝ 785｛ 80｝ 1,470｛150｝ 245｛25｝ 685｛ 70｝ 1,470｛150｝ 2,940｛300｝ 294｛30｝ 785｛ 80｝
150 160 170
160 170 180
147｛15｝ 390｛40｝ 785｛ 80｝ 1,470｛150｝ 245｛25｝ 685｛ 70｝ 1,470｛150｝ 2,940｛300｝ 490｛50｝ 980｛100｝ 147｛15｝ 490｛50｝ 980｛100｝ 1,960｛200｝ 245｛25｝ 685｛ 70｝ 1,470｛150｝ 2,940｛300｝ 490｛50｝ 980｛100｝ 147｛15｝ 490｛50｝ 980｛100｝ 1,960｛200｝ 294｛30｝ 880｛ 90｝ 1,960｛200｝ 3,900｛400｝ 490｛50｝ 980｛100｝
180 190
190 200
196｛20｝ 590｛60｝1,270｛130｝ 2,450｛250｝ 294｛30｝ 880｛ 90｝ 1,960｛200｝ 3,900｛400｝ 590｛60｝1,470｛150｝ 196｛20｝ 590｛60｝1,270｛130｝ 2,450｛250｝ 490｛50｝1,270｛130｝ 2,940｛300｝ 5,900｛600｝ 590｛60｝1,470｛150｝
49｛
-
Heavy
5｝
8｝
-
Central
196｛ 20｝
78｛
147｛ 15｝ 20｛ 2｝
Normal
70C，BNT0，
20｛ 2｝ 20｛ 2｝ 29｛ 3｝
29｛ 29｛ 78｛
3｝ 3｝ 8｝
49｛ 5｝ 147｛ 15｝ 49｛ 5｝ 147｛ 15｝ 98｛10｝ 196｛ 20｝
Bearing
Nominal bore diameter d mm
79，HSB9 Normal
Central
70，HSB0 Heavy
Low
Normal
Central
Heavy
over
inch
12 18
12 18 32
39｛ 4｝ 49｛ 5｝ 98｛ 10｝
78｛ 8｝ 147｛ 15｝ 196｛ 20｝
147｛ 15｝ 196｛ 20｝ 294｛ 30｝
29｛ 3｝ 29｛ 3｝ 49｛ 5｝
78｛ 8｝ 78｛ 8｝ 147｛ 15｝
147｛ 15｝ 147｛ 15｝ 294｛ 30｝
32 40 50
40 50 65
147｛ 15｝ 196｛ 20｝ 245｛ 25｝
294｛ 30｝ 390｛ 40｝ 490｛ 50｝
590｛ 60｝ 635｛ 70｝ 785｛ 80｝
78｛ 8｝ 78｛ 8｝ 147｛15｝
294｛ 30｝ 294｛ 30｝ 490｛ 50｝
590｛ 60｝ 590｛ 60｝ 880｛ 90｝
880｛ 90｝ 980｛ 100｝ 1,470｛ 150｝
65 80 90
80 90 95
390｛ 40｝ 490｛ 50｝ 490｛ 50｝
785｛ 80｝ 980｛100｝ 980｛100｝
1,180｛120｝ 1,470｛150｝ 1,470｛150｝
147｛15｝ 196｛20｝ 196｛20｝
590｛ 60｝ 880｛ 90｝ 880｛ 90｝
1,470｛150｝ 1,960｛200｝ 1,960｛200｝
1,960｛ 200｝ 2,940｛ 300｝ 2,940｛ 300｝
95 100 105
100 105 110
685｛ 70｝ 685｛ 70｝ 685｛ 70｝
1,274｛130｝ 1,274｛130｝ 1,274｛130｝
1,960｛200｝ 1,960｛200｝ 1,960｛200｝
196｛20｝ 294｛30｝ 294｛30｝
880｛ 90｝ 980｛100｝ 980｛100｝
1,960｛200｝ 2,450｛250｝ 2,450｛250｝
2,940｛ 300｝ 3,900｛ 400｝ 3,900｛ 400｝
110 120 140
120 140 150
880｛ 90｝ 980｛100｝ 1,270｛130｝
1,780｛180｝ 1,960｛200｝ 2,450｛250｝
2,940｛300｝ 3,450｛350｝ 4,400｛450｝
294｛30｝ 490｛50｝ 490｛50｝
980｛100｝ 1,470｛150｝ 1,470｛150｝
2,450｛250｝ 3,450｛350｝ 3,450｛350｝
3,900｛ 400｝ 5,900｛ 600｝ 5,900｛ 600｝
150 160 170
160 170 180
1,270｛130｝ 1,270｛130｝ 1,780｛180｝
2,450｛250｝ 2,450｛250｝ 3,450｛350｝
4,400｛450｝ 4,400｛450｝ 5,900｛600｝
685｛70｝ 685｛70｝ 685｛70｝
2,450｛250｝ 2,450｛250｝ 2,450｛250｝
4,900｛500｝ 4,900｛500｝ 4,900｛500｝
8,800｛ 900｝ 8,800｛ 900｝ 8,800｛ 900｝
180 190
190 200
1,780｛180｝ 2,450｛250｝
3,450｛350｝ 4,900｛500｝
5,900｛600｝ 7,850｛800｝
880｛90｝ 880｛90｝
3,450｛350｝ 3,450｛350｝
6,850｛700｝ 6,850｛700｝
9,800｛1,000｝ 9,800｛1,000｝
A-66
196｛ 294｛ 490｛
20｝ 30｝ 50｝
●Bearing Internal Clearance and Preload
Unit N｛kgf｝
series HSB0C
72C，BNT2
Central
Heavy
Low
73C
Normal
Central
98｛ 10｝ 147｛ 15｝ 294｛ 30｝
98｛ 10｝ 98｛ 10｝ 147｛ 15｝
147｛ 15｝ 196｛ 20｝ 294｛ 30｝
20｛ 2｝ 20｛ 2｝ 49｛ 5｝
49｛ 5｝ 49｛ 5｝ 98｛ 10｝
294｛ 30｝ 294｛ 30｝ 490｛ 50｝
590｛ 60｝ 78｛ 8｝ 685｛ 70｝ 98｛10｝ 980｛100｝ 147｛15｝
196｛ 20｝ 294｛ 30｝ 390｛ 40｝
Heavy
196｛ 294｛ 490｛
Low
20｝ 29｛ 30｝ 29｛ 50｝ 76｛
Normal
Central
3｝ 78｛ 8｝ 3｝ 78｛ 8｝ 8｝ 147｛ 15｝
Heavy
147｛ 15｝ 196｛ 20｝ 390｛ 40｝
294｛ 390｛ 685｛
30｝ 40｝ 70｝
490｛ 50｝ 785｛ 80｝ 98｛ 10｝ 294｛ 30｝ 590｛ 60｝ 980｛ 100｝ 590｛ 60｝ 980｛ 100｝ 145｛ 15｝ 390｛ 40｝ 980｛100｝ 1,960｛ 200｝ 785｛ 80｝ 1,470｛ 150｝ 196｛ 20｝ 590｛ 60｝ 1,470｛150｝ 2,940｛ 300｝
685｛ 70｝ 1,470｛150｝ 196｛20｝ 980｛100｝ 1,960｛200｝ 294｛30｝ 980｛100｝ 1,960｛200｝ 294｛30｝
490｛ 50｝ 980｛100｝ 1,960｛ 200｝ 294｛ 30｝ 785｛ 80｝ 1,960｛200｝ 3,900｛ 400｝ 685｛ 70｝ 1,470｛150｝ 2,940｛ 300｝ 390｛ 40｝ 980｛100｝ 2,450｛250｝ 4,900｛ 500｝ 685｛ 70｝ 1,960｛200｝ 3,900｛ 400｝ 390｛ 40｝ 980｛100｝ 2,950｛300｝ 5,900｛ 600｝
980｛100｝ 1,960｛200｝ 294｛30｝ 1,470｛150｝ 2,450｛250｝ 390｛40｝ 1,470｛150｝ 2,450｛250｝ 390｛40｝
685｛ 70｝ 1,960｛200｝ 3,900｛ 400｝ 390｛ 40｝ 980｛100｝ 2,950｛300｝ 5,900｛ 600｝ 980｛100｝ 2,450｛250｝ 4,900｛ 500｝ 590｛ 60｝ 1,470｛150｝ 3,450｛350｝ 6,850｛ 700｝ 980｛100｝ 2,450｛250｝ 4,900｛ 500｝ 590｛ 60｝ 1,470｛150｝ 3,450｛350｝ 6,850｛ 700｝
1,470｛150｝ 2,450｛250｝ 390｛40｝ 980｛100｝ 2,450｛250｝ 4,900｛ 500｝ 590｛ 60｝ 1,470｛150｝ 3,450｛350｝ 6,850｛ 700｝ 1,960｛200｝ 3,900｛400｝ 490｛50｝ 1,470｛150｝ 2,940｛300｝ 5,900｛ 600｝ 785｛ 80｝ 1,960｛200｝ 4,400｛450｝ 8,800｛ 900｝ 1,960｛200｝ 3,900｛400｝ 490｛50｝ 1,470｛150｝ 2,940｛300｝ 5,900｛ 600｝ 785｛ 80｝ 1,960｛200｝ 4,400｛450｝ 8,800｛ 900｝ 2,450｛250｝ 5,900｛600｝ 685｛70｝ 1,960｛200｝ 4,400｛450｝ 7,850｛ 800｝ 880｛ 90｝ 2,450｛250｝ 5,900｛600｝ 9,800｛1,100｝ 2,450｛250｝ 5,900｛600｝ 685｛70｝ 1,960｛200｝ 4,400｛450｝ 7,850｛ 800｝ 880｛ 90｝ 2,450｛250｝ 5,900｛600｝ 9,800｛1,100｝ 2,450｛250｝ 5,900｛600｝ 685｛70｝ 1,960｛200｝ 4,400｛450｝ 7,850｛ 800｝ 880｛ 90｝ 2,450｛250｝ 5,900｛600｝ 9,800｛1,100｝ 3,450｛350｝ 6,850｛700｝ 785｛80｝ 2,450｛250｝ 4,900｛500｝ 9,800｛1,000｝ 980｛100｝ 2,940｛300｝ 6,850｛700｝11,800｛1,200｝ 3,450｛350｝ 6,850｛700｝ 785｛80｝ 2,450｛250｝ 4,900｛500｝ 9,800｛1,000｝ 980｛100｝ 2,940｛300｝ 6,850｛700｝11,800｛1,200｝
Unit N｛kgf｝
series 72，72B Low
29｛ 29｛ 78｛
Normal
Central
3｝ 3｝ 8｝
98｛ 10｝ 98｛ 10｝ 196｛ 20｝
196｛ 20｝ 294｛ 30｝ 490｛ 50｝
98｛ 10｝ 147｛ 15｝ 196｛ 20｝
390｛ 40｝ 590｛ 60｝ 785｛ 80｝
294｛ 30｝ 490｛ 50｝ 490｛ 50｝
73，73B Heavy
Low
Normal
Central
30｝ 40｝ 60｝
390｛ 40｝ 490｛ 50｝ 980｛ 100｝
490｛ 50｝ 785｛ 80｝ 980｛100｝
980｛ 100｝ 1,470｛ 150｝ 2,450｛ 250｝
1,960｛ 200｝ 2,450｛ 250｝ 3,900｛ 400｝
390｛ 40｝ 590｛ 60｝ 590｛ 60｝
1,470｛150｝ 1,960｛200｝ 2,450｛250｝
3,450｛ 350｝ 3,900｛ 400｝ 4,900｛ 500｝
4,900｛ 500｝ 5,880｛ 600｝ 6,854｛ 700｝
5,900｛ 600｝ 7,850｛ 800｝ 7,850｛ 800｝
590｛ 60｝ 685｛ 70｝ 685｛ 70｝
2,450｛250｝ 2,940｛300｝ 2,940｛300｝
4,900｛ 500｝ 5,900｛ 600｝ 5,900｛ 600｝
6,860｛ 700｝ 8,800｛ 900｝ 8,800｛ 900｝
4,900｛500｝ 5,900｛600｝ 5,900｛600｝
7,850｛ 800｝ 9,800｛1,000｝ 9,800｛1,000｝
685｛ 70｝ 880｛ 90｝ 880｛ 90｝
2,940｛300｝ 3,900｛400｝ 3,900｛400｝
5,900｛ 600｝ 7,850｛ 800｝ 7,850｛ 800｝
8,800｛ 900｝ 11,800｛1,200｝ 11,800｛1,200｝
3,900｛400｝ 3,900｛400｝ 3,900｛400｝
7,850｛800｝ 7,850｛800｝ 7,850｛800｝
11,800｛1,200｝ 11,800｛1,200｝ 11,800｛1,200｝
980｛100｝ 980｛100｝ 980｛100｝
4,400｛450｝ 4,400｛450｝ 4,400｛450｝
8,800｛ 900｝ 8,800｛ 900｝ 8,800｛ 900｝
13,700｛1,400｝ 13,700｛1,400｝ 13,700｛1,400｝
4,400｛450｝ 4,400｛450｝
8,800｛900｝ 8,800｛900｝
13,700｛1,400｝ 13,700｛1,400｝
1,470｛150｝ 1,470｛150｝
5,900｛600｝ 5,900｛600｝
11,800｛1,200｝ 11,800｛1,200｝
15,700｛1,600｝ 15,700｛1,600｝
294｛ 390｛ 785｛
30｝ 40｝ 80｝
49｛ 5｝ 49｛ 5｝ 98｛ 10｝
147｛ 15｝ 147｛ 15｝ 294｛ 30｝
880｛ 90｝ 980｛100｝ 1,470｛150｝
1,470｛ 150｝ 1,960｛ 200｝ 2,940｛ 300｝
147｛ 15｝ 196｛ 20｝ 294｛ 30｝
980｛100｝ 1,470｛150｝ 1,960｛200｝
2,450｛250｝ 2,940｛300｝ 3,900｛400｝
3,900｛ 400｝ 4,900｛ 500｝ 5,900｛ 600｝
490｛ 50｝ 590｛ 60｝ 590｛ 60｝
1,960｛200｝ 2,450｛250｝ 2,450｛250｝
3,900｛400｝ 4,900｛500｝ 4,900｛500｝
590｛ 60｝ 785｛ 80｝ 785｛ 80｝
2,450｛250｝ 2,940｛300｝ 2,940｛300｝
880｛ 90｝ 880｛ 90｝ 880｛ 90｝ 980｛100｝ 980｛100｝
A-67
294｛ 390｛ 590｛
Heavy
●Allowable Speed 9. Allowable Speed As bearing speed increases, the temperature of the bearing also increases due to friction heat generated in the bearing interior. If the temperature continues to rise and exceeds certain limits, the efficiency of the lubricant start to fail down drastically, and the bearing can no longer continue to operate in a stable manner. Therefore, the maximum speed at which it is possible for the bearing to continuously operate without the generation of excessive heat beyond specified limits, is called the allowable speed (r/min). The allowable speed of a bearing depends on the type of bearing, bearing dimensions, type of cage, load, lubricating conditions, and cooling conditions.
1.0
0.9
fL
0.8
0.7
0.6
0.5 5
6
7
8
9
10
11
Cr P
The allowable speeds listed in the bearing tables for grease and oil lubrication are for standard NTN bearings under normal operating conditions, correctly installed, using the suitable lubricants with adequate supply and proper maintenance. Moreover, these values are based on normal load conditions (P ≦ 0.09C, Fa / Fr ≦ 0.3). For ball bearings with contact seals (LLU type), the allowable speed is determined by the peripheral lip speed of the seal.
Fig. 9.1 Value of adjustment factor FL depends on bearing load
1.0
Angular
contact ba
0.9 Deep g
For bearings to be used under heavier than normal load conditions, the allowable speed values listed in the bearing tables must be multiplied by an adjustment factor. The adjustment factors f L and f C are given in Figs. 9.1 and 9.2.
roove b
ll bearings
all beari
ngs
fC
0.8
Cyli Tap ndrical ere d ro roller b ller e bea arings ring s (F a/F
0.7
0.6
r≦
Also, when radial bearings are mounted on vertical shafts, lubricant retentions and cage guidance are not favorable compared to horizontal shaft mounting.
0.5
0
0.5
1.0
1.5
2e) 2.0
Fa Fr
Therefore, the allowable speed should be reduced to approximately 80% of the listed speed.
Fig. 9.2 Value of adjustment factor FC depends on combined load
For speeds other than those mentioned above, and for which data is incomplete, please consult NTN Engineering.
Table 9.1 Adjustment factor, fB, for allowable number of revolutions Type of bearing
It is possible to operate precision bearings with high speed specification cages at speeds higher than those listed in the bearing tables, if special precautions are taken. These precautions should include the use of forced oil circulation methods such as oil jet or oil mist lubrication.
Deep groove ball bearings Angular contact ball bearings Cylindrical roller bearings Tapered roller bearings
Under such high speed operating conditions, when special care is taken, the standard allowable speeds given in the bearing tables can be adjusted upward. The maximum speed adjustment values, f B, by which the bearing table speeds can be multiplied, are shown in Table 9.1. However, for any application requiring speeds in excess of the standard allowable speed, please consult NTN Engineering.
A-68
Adjustment factor fB 3.0 2.0 2.5 2.0
●Friction and Temperature Rise 10. Friction and Temperature Rise 10.1 Friction
10.2 Temperature rise
One of the main functions required of a bearing is that it must have low friction. Under normal operating conditions rolling bearings have a much smaller friction coefficient than the slide bearings, especially starting friction.
Almost all friction loss in a bearing is transformed into heat within the bearing itself and causes the temperature of the bearing to rise. The amount of thermal generation caused by friction moment can be calculated using formula (10.2).
The friction coefficient for rolling bearings is calculated on the basis of the bearing bore diameters and is expressed by formula (10.1).
Q＝0.105×10 Mn N ……………… (10.2) -6 ＝1.03×10 Mn｛kgf｝ where, Q：Thermal value, kW M：Friction moment, N・mm n：Rotational speed, r/min
-6
2M μ＝ Pd …………………………………… (10.1) where, μ：Friction coefficient M ：Friction moment, Nmm P ：Load, N d ：Bearing bore diameter, mm
Bearing operating temperature is determined by the equilibrium or balance between the amount of heat generated by the bearing and the amount of heat conducted away from the bearing. In most cases the temperature rises sharply during initial operation, then increases slowly until it reaches a stable condition and then remains constant. The time it takes to reach this stable state will vary according to the amount of heat generated, the heat absorbing capacity of the housing and surrounding parts, the amount of cooling surface, amount of lubricating oil, and the surrounding ambient temperature. If the temperature continues to rise and does not become constant, it must be assumed that there is some improper function.
Although the dynamic friction coefficient for rolling bearings varies with the type of bearings, load, lubrication, speed, and other factors; for normal operating conditions, the approximate friction coefficients for various bearing types are listed in Table 10.1.
Table 10.1 Friction coefficient for bearings -3
Bearing type
Coefficient μ×10
Deep groove ball bearings Angular contact ball bearings Self-aligning ball bearings Cylindrical roller bearings Needle roller bearings Tapered roller bearings Spherical roller bearings Thrust ball bearings Thrust roller bearings
1.0∼1.5 1.2∼1.8 0.8∼1.2 1.0∼1.5 2.0∼3.0 1.7∼2.5 2.0∼2.5 1.0∼1.5 2.0∼3.0
｝
Excessive bearing heat can be caused by: moment load, insufficient internal clearance, excessive preload, too little or too much lubricant, foreign matter in the bearing, or by heat generated at the sealing device.
A-69
●Lubrication 11. Lubrication 11.1 Lubrication of rolling bearings
(dust, water, etc.) into the bearing interior, removes dust and other impurities from the lubricant, and prevents the lubricant from leaking to the outside, is also a requirement.
The purpose of bearing lubrication is to prevent direct metallic contact between the various rolling and sliding elements. This is accomplished through the formation of a thin oil (or grease) film on the contact surfaces. However, for rolling bearings, lubrication has the following advantages:
Almost all rolling bearings use either grease or oil lubrication methods, but in some special applications, a solid lubricant such as molybdenum disulfide or graphite may be used.
(1) Friction and wear reduction (2) Friction heat dissipation (3) Prolonged bearing life (4) Prevention of rust (5) Protection against harmful elements
Fig. 11.1 shows the relationship between oil volume, friction loss, and bearing temperature. Table 11.1 details the characteristics of this relationship.
11.2 Lubrication methods and characteristics
In order to achieve the above effects, the most effective lubrication method for the operating conditions must be selected. Also, a good quality, reliable lubricant must be selected. In addition, an effectively designed sealing system that prevents the intrusion of damaging elements
The lubrication methods come in two general methods: you must be care for select of that from using condition. The characteristic are show in table 11.2.
high
high
Table 11.2 Comparison of grease lubrication and oil lubrication characteristics Method
Friction loss
A
B
C
D
Friction loss
Temperature increase
Temperature increase
E
Concern
Grease lubrication
Handling
◎
△
Reliability
○
◎
Cooling effect
×
○ necessary)
Seal structure
○
△
Power loss
○
○
Environment contamination
○
△
High speed rotation
×
○
Oil lubrication
(Circulation
Oil volume ◎： Very good ○：Good △：Fair ×：Poor
great Fig. 11.1
11.3 Grease lubrication Table 11.1 Oil volume, friction loss, bearing temperature (See Fig. 11.1) Range
Characteristics
Lubrication method
A
When oil volume is extremely low, direct metallic contact occurs in places between the rolling elements and raceway surfaces. Bearing abrasion and seizing occur.
ー ーー
B
A thin oil film develops over all surfaces, friction is minimal and bearing temperature is low.
Grease lubrication, oil mist, air-oil lubrication
C
As oil volume increases, heat buildup is balanced by cooling.
Circulating lubrication
D
Regardless of oil volume, temperature increases at a fixed rate.
Circulating lubrication
E
As oil volume increases, cooling Forced circulation predominates and bearing temperature lubrication, decreases. Oil jet lubrication
Grease type lubricants are relatively easy to handle and require only the simplest sealing devices-for these reasons, grease is the most widely used lubricant for rolling bearings. 11.3.1 Types and characteristics of grease Lubricating grease are composed of either a mineral oil base or a synthetic oil base. To this base a thickener and other additives are added. The properties of all greases are mainly determined by the kind of base oil used and by the combination of thickening agent and various additives. Standard greases and their characteristics are listed in Table 11.3. As performance characteristics of even the same type of grease will vary widely from brand to brand, it is best to check the manufacturers' data when selecting a grease.
A-70
●Lubrication
Table 11.3 Grease varieties and characteristics Grease name
Lithium grease
Sodium grease (Fiber grease)
Calcium compound base grease
Thickener
Li soap
Na soap
Ca+Na soap Ca+Li soap
Base oil
Mineral oil
Diester oil
Silicone oil
Mineral oil
Mineral oil
Dropping point ˚C
170 ∼ 190
170 ∼ 190
200 ∼ 250
150 ∼ 180
150 ∼ 180
Operating temperature range ˚C
-30 ∼ +130
-50 ∼ +130
-50 ∼ +160
-20 ∼ +130
-20 ∼ +120
Mechanical stability
Excellent
Good
Good
Excellent ∼ Good
Excellent ∼ Good
Pressure resistance
Good
Good
poor
Good
Excellent ∼ Good
Water resistance
Good
Good
Good
Good ∼ poor
Good ∼ poor
Widest range of applications. Applications
Grease used in all types of rolling bearings.
Excellent low temperature and wear characteristics.
Suitable for high and low temperatures.
Some emulsification when water is introduced.
Excellent pressure resistance and mechanical stability.
Suitable for small sized and miniature bearings.
Unsuitable for heavy load applications due to low oil film strength.
Excellent characteristics at relatively high temperatures.
Suitable for bearings receiving shock loads.
Grease name
Aluminum grease
Non-soap base grease Thickener
Thickener
AI soap
Bentone, silica gel, urea, carbon black, fluorine compounds, etc.
Base oil
Mineral oil
Mineral oil
Synthetic oil
Dropping point ˚C
70 ∼ 90
250 or above
250 or above
Operating temperature range ˚C
-10 ∼ +80
-10 ∼ +130
-50 ∼ +200
Mechanical stability
Good ∼ poor
Good
Good
Pressure resistance
Good
Good
Good
Water resistance
Good
Good
Good
Excellent viscosity characteristics. Applications
Suitable for bearings subjected to vibrations.
Can be used in a wide range of low to high temperatures. Shows excellent heat resistance, cold resistance, chemical resistance, and other characteristics when matched with a suitable base oil and thickener. Grease used in all types of rolling bearings.
A-71
●Lubrication
(1) Base oil Natural mineral oil or synthetic oils such as diester oil, silicone oil and fluorocarbon oil are used as grease base oils.
Table 11.4 Consistency of grease
Mainly, the properties of any grease is determined by the properties of the base oil. Generally, greases with a low viscosity base oil are best suited for low temperatures and high speeds; while greases made from high viscosity base oils are best suited for heavy loads. (2) Thickening agents Thickening agents are compounded with base oils to maintain the semi-solid state of the grease. Thickening agents consist of two types of bases, metallic soaps and non-soaps. Metallic soap thickeners include: lithium, sodium, calcium, etc.
NLGI Consistency No.
JIS (ASTM) Worked penetration
0
355∼385
For centralized greasing use
1
310∼340
For centralized greasing use
2
265∼295
For general use and sealed bearing use
3
220∼250
For general and high temperature use
4
175∼205 For special use
Applications
(5) Mixing of greases When greases of different kinds are mixed together, the consistency of the greases will change (usually softer), the operating temperature range will be lowered, and other changes in characteristics will occur. As a general rule, greases with different bases oil, and greases with different thickener agents should never be mixed.
Non-soap base thickeners are divided into two groups; inorganic (silica gel, bentonite, etc.) and organic (polyurea, fluorocarbon, etc.).
Also, greases of different brands should not be mixed because of the different additives they contain.
The various special characteristics of a grease, such as limiting temperature range, mechanical stability, water resistance, etc. depend largely on the type of thickening agent used. For example, a sodium based grease is generally poor in water resistance properties, while greases with bentone, poly-urea and other non-metallic soaps as the thickening agent are generally superior in high temperature properties.
However, if different greases must be mixed, at least greases with the same base oil and thickening agent should be selected. But even when greases of the same base oil and thickening agent are mixed, the quality of the grease may still change due to the difference in additives. For this reason, changes in consistency and other qualities should be checked before being applied.
(3) Additives Various additives are added to greases to improve various properties and efficiency. For example, there are anti-oxidents, high-pressure additives (EP additives), rust preventives, and anti-corrosives.
11.3.2 Amount of grease The amount of grease used in any given situation will depend on many factors relating to the size and shape of the housing, space limitations, bearing's rotating speed and type of grease used.
For bearings subject to heavy loads and/or shock loads, a grease containing high-pressure additives should be used. For comparatively high operating temperatures or in applications where the grease cannot be replenished for long periods, a grease with an oxidation stabilizer is best to use.
As a general rule, housings and bearings should be only filled from 30% to 60% of their capacities. Where speeds are high and temperature rises need to be kept to a minimum, a reduced amount of grease should be used. Excessive amount of grease cause temperature rise which in turn causes the grease to soften and may allow leakage. With excessive grease fills oxidation and deterioration may cause lubricating efficiency to be lowered.
(4) Consistency The consistency of a grease, i.e. the stiffness and liquidity, is expressed by a numerical index. The NLGI values for this index indicate the relative softness of the grease; the larger the number, the stiffer the grease. The consistency of a grease is determined by the amount of thickening agent used and the viscosity of the base oil. For the lubrication of rolling bearings, greases with the NLGI consistency numbers of 1, 2, and 3 are used.
Moreover, the standard bearing space can be found by formula (11.1) V＝K・W ……………………………… (11.1) where, V : Quantity of bearing space open type (approx.) cm3 K : Bearing space factor (Table 11.5) W : Mass of bearing kg
General relationships between consistency and application of grease are shown in Table 11.4.
A-72
●Lubrication
supply interval should be shortened accordingly.
Table 11.5 Bearings space ratio K
Bearing type
Retainer type
K
Ball bearings 1
Pressed retainer
61
NU-type cylindrical roller bearings 2
Pressed retainer Machined retainer
50 36
N-type cylindrical roller bearings 3
Pressed retainer Machined retainer
55 37
Tapered roller bearings
Pressed retainer
46
Pressed retainer Machined retainer
35 28
Spherical roller bearings
Generally, for every 10˚C increase in bearing temperature above 80˚C, the relubrication period is reduced by exponent "1/1.5". ――――――――――――――――――――――――――――――――――――
(Example) Find the grease relubrication time limit for deep groove ball bearing 6206, with a radial load of 2.0 kN operating at 3,600 r/min.
――――――――――――――――――――――――――――――――――――
1 Remove 160 series 2 Remove NU4 series 3 Remove N4 series
Cr / Pr ＝ 19.5/2.0 kN ＝ 9.8, from Fig. 9.1 the adjusted load, fL, is 0.96. From the bearing tables, the allowable speed for bearing 6206 is 11,000 r/min and the numbers of revolutions permissible at a radial load of 2.0 kN are
11.3.3 Replenishment As the lubricating efficiency of grease declines with the passage of time, fresh grease must be re-supplied at proper intervals. The replenishment time interval depends on the type of bearing, dimensions, bearing's rotating speed, bearing temperature, and type of grease.
no ＝ 0.96×11,000 ＝ 10,560 r/min 10,560 no therefore, ＝ ＝2.93 n 3,600
Using the chart in Fig. 11.2, find the point corresponding to bore diameter d = 30 (from bearing table) on the vertical line for radial ball bearings. Draw a straight horizontal line to vertical line !. Then, draw a straight line from that point (A in example) to the point on line@ which corresponds to the no / n value (2.93 in example). The point, C, where this line intersects vertical line # indicates the relubrication interval h. In this case the life of the grease is approximately 5,500 hours.
An easy reference chart for calculating grease replenishment intervals is shown in Fig. 11.2. This chart indicates the replenishment interval for standard rolling bearing grease when used under normal operating conditions. As operating temperatures increase, the grease re-
no /n @
20.0 15.0
! 400 300 200
Bearing bore d, mm
100 50 40 30 20 10 7
Relubrication interval, h # 20,000
10.0 9.0 8.0 7.0 6.0
10,000
5.0
30,000
A C 500 300 200
Radial ball bearings
100 200 100 50 30
50 30 20
20 10
5,000 4,000
4.0 3.0
3,000
500 300 200
2,000 2.0
100 50 30 20
1,000 1.5 500 400
Thrust ball bearings
300 1.0
Cylindrical roller bearings
0.9
Tapered roller bearings Spherical roller bearings
0.8
0.7
no：factor fL×limiting speed for grease see Fig. 9.1 and bearing tables n ：actual rotational speed, r/min Fig. 11.2 Diagram for relubrication interval of greasing
A-73
B
●Lubrication
11.4 Solid grease (For bearings with solid grease)
11.5 Oil lubrication
"Solid grease" is a lubricant composed mainly of lubricating grease and ultra-high polymer polyethylene. Solid grease has the same viscosity as grease at normal temperature, but by applying a special heat treatment process, this special grease solidifies retaining a large proportion of the lubricant within the bearing. The result of this solidification is that the grease does not easily leak from the bearing, even when the bearing is subjected to strong vibrations or centrifugal force. Bearings with solid grease are available in two types: the spot-pack type in which solid grease is injected into the retainer, and the full-pack type in which all empty space around the rolling elements is filled with solid grease. Spot-pack solid grease is standard for deep groove ball bearings, small diameter ball bearings, and bearing units. Full-pack solid grease is standard for self-aligning ball bearings, spherical roller bearings, and needle roller bearings. Primary advantages: (1) Clean working environment with minimal grease leakage (2) Low bearing torque with spot-pack type solid grease
Oil lubrication is suitable for applications requiring that bearing-generated heat or heat applied to the bearing from other sources be carried away from the bearing and dissipated to the outside.Table 11.6 shows the main methods of oil lubrication. 11.5.1 Selection of lubricating oil Under normal operating conditions, spindle oil, machine oil, turbine oil, and other mineral oils are widely used for the lubrication of rolling bearings. However, for temperatures above 150˚C or below -30˚C, synthetic oils such as diester oil, silicone oil, and fluorocarbon oil are used. For lubricating oils, viscosity is one of the most important properties and determines an oil’s lubricating efficiency. If viscosity is too low, formation of the oil film will be insufficient, and damage will occur to the load carrying surfaces of the bearing. If viscosity is too high, viscous resistance will also be great and result in temperature increases and friction loss. In general, for higher speed applications a lower viscosity oil should be used; for heavier load applications, a higher viscosity oil should be used. In regard to operating temperature and lubrication, Table 11.7 lists the required oil viscosity for different types of rolling bearings. Fig. 11.5 is an oil viscosity operating temperature comparison chart for the purpose of selecting a lubrication oil with viscosity characteristics appropriate to an application. Table 11.8 lists the selection standards for lubricating oil viscosity with reference to bearing operating conditions.
For more details, please refer to NTN special catalog of Solid grease bearings.
Solid grease
Table 11.7 Required lubricating oil viscosity for bearings Dynamic viscosity mm2 /s
Bearing type Ball bearings, Cylindrical roller bearings, Needle roller bearings Spherical roller bearings, Tapered roller bearings, Needle roller thrust bearings Self-aligning roller thrust bearings
13 20 30
Fig. 11.3 Deep groove ball bearing with spot-pack solid grease (Z shield) (Standard for deep groove ball bearings) 3,000 2,000
1: 2: 3: 4: 5: 6: 7:
1,000 500 300 200 100
Viscosity mm2/s
Solid grease
ISO ISO ISO ISO ISO ISO ISO
VG 320 VG 150 VG 68 VG 46 VG 32 VG 22 VG 15
50 30 20 15
1 2
10 8 6 5
6
4
3 4 5
7 3 - 30
- 20
- 10
0
10
20
30
40
50
60
70
80
90
100 110 120 130 140 150 160
Temperature ° Ｃ
Fig. 11.4 Spherical roller bearing with full-pack solid grease (Standard for spherical roller bearings)
FIg. 11.5 Relation between lubricating oil viscosity and temperature
A-74
●Lubrication
Lubrication method (Oil bath lubrication) ¡Oil bath lubrication is the most generally used method of lubrication and is widely used for low to moderate rotation speed applications. ¡For horizontal shaft applications, oil level should be maintained at approximately the center of the lowest rolling element, according to the oil gauge, when the bearing is at rest. For vertical shafts at low speeds, oil level should be maintained at 50 - 80% submergence of the rolling elements.
Example
Lubrication method (Disc lubrication) ¡In this method, a partially submerged disc rotates and pulls oil up into a reservoir from which it then drains down through the bearing, lubricating it.
(Oil spray lubrication) ¡In this method, an impeller or similar device mounted on the shaft draws up oil and sprays it onto the bearing. This method can be used at considerably high speeds.
(Oil mist lubrication) ¡Using pressurized air, lubricating oil is atomized before passing through the bearing. ¡Due to the low lubricant resistance, this method is well suited to high speed applications.
(Drip lubrication)
(Air-oil lubrication)
¡In this method, oil is collected above the bearing and allowed to drip down into the housing where it becomes a lubricating mist as it strikes the rolling elements. Another version allows only slight amounts of oil to pass through the bearing. ¡Used at relatively high speeds for light to moderate load applications. ¡In most cases, oil volume is a few drops per minute.
(Circulating lubrication)
¡In this method, the required minimum amount of lubricating oil is measured and fed to each bearing at ideal intervals using compressed air. ¡With fresh lubricating oil constantly being fed to the bearing, and with the cooling effect of the compressed air, bearing temperature rise can be minimized. ¡Because the required oil quantity is infinitesimal, the working environment can be kept clean. Air-oil lubrication units are available from NTN.
(Oil jet lubrication)
¡Used for bearing cooling applications or for automatic oil supply systems in which the oil supply is centrally located. ¡One of the advantages of this method is that oil cooling devices and filters to maintain oil purity can be installed within the system. ¡In order for oil to thoroughly lubricate the bearing, oil inlets and outlets must be provided on opposite sides of the bearing.
¡This method lubricates by injecting oil under high pressure directly into the side of the bearing. This is a reliable system for high speed, high temperature or otherwise severe conditions. ¡Used for lubricating the bearings in jet engines, gas turbines, and other high speed equipment. ¡Under-race lubrication for machine tools is one example of this type of lubrication.
A-75
Example
●Lubrication
Table 11.8 Selection standards for lubricating oils (Reference) Bearing operating temperature ˚C −30∼
0
0∼ 60
60∼100
dn-value
Lubricating oil ISO viscosity grade (VG) Normal load
Suitable bearing
Heavy load or shock load
22，32
46
All types
15,000 Up to
46，68
100
All types
15,000 ∼80,000
32，46
68
All types
Up to allowable revolutions
80,000 ∼150,000
22，32
32
All types but thrust ball bearings
150,000∼500,000
10
22，32
Single row radial ball bearings, cylindrical roller bearings
15,000 Up to
150
220
All types
15,000 ∼80,000
100
150
All types
80,000 ∼150,000
68
100，150
All types but thrust ball bearings
150,000∼500,000
32
68
Single row radial ball bearings, cylindrical roller bearings
100 ∼150
Up to allowable revolutions
320
0∼ 60
Up to allowable revolutions
46，68
60∼100
Up to allowable revolutions
150
All types Self-aligning roller bearings
Note 1: Applied when lubrication method is either oil bath or circulating lubrication. 2: Please consult NTN Engineering in cases where operating conditions fall outside the range covered by this table.
11.5.2 Oil quantity In forced oil lubrication systems, the heat radiated away by the housing and surrounding parts plus the heat carried away by the lubricating oil is approximately equal to the amount of heat generated by the bearing and other sources.
Assume the bearing temperature is approximately equal to the expelled oil temperature, from Table 11.9, since K ＝ 1 Q＝1×180＝180cm3 / min Table 11.9 Factor K
For standard housing applications, the quantity of oil required can be found by formula (11.2).
Expelled oil temp minus supplied oil temp ˚C
K
10 1.5 15 1 20 0.75 25 0.6
Q＝K・q ……………………………… (11.2) where, Q: Quantity of oil for one bearing cm3/min. K: Allowable oil temperature rise factor (Table 11.9) q : Minimum oil quantity cm3/min. (Fig. 11.6) Because the amount of heat radiated will vary according to the type of housing, for actual operation it is advisable that the quantity of oil calculated by formula (11.2) be multiplied by a factor or 1.5 or 2.0. Then, the amount of oil can be adjusted to correspond to actual operating conditions. Furthermore, if it is assumed for calculation purposes that no heat is radiated by the housing, and that all bearing heat is removed by the oil, then the value in Fig. 11.3 for shaft diameter, d ＝ 0, regardless of actual shaft diameter.
11.5.3 Relubrication intervals The intervals at which lubricating oil should be changed varies depending upon operating conditions, oil quantity, and type of oil used. In general, for oil bath lubrication where the operating temperature is 50˚C or less, oil should be replaced once a year. When the operating temperature is between 80˚C – 100˚C, oil should be replaced at least every three months. For important equipment, it is advisable that lubricating efficiency and oil purity deterioration be checked regularly to determine when oil replacement is necessary.
――――――――――――――――――――――――――――――――――――
(Example) For tapered roller bearing 30220U mounted on a flywheel shaft with a radial load of 9.5 kN｛969 kgf｝, operating at 1,800 r/min, what is the amount of lubricating oil required to keep the bearing temperature rise below 15˚C.
――――――――――――――――――――――――――――――――――――
d ＝ 100 mm， dn ＝ 100×1,800＝18×104 From Fig. 11.6 q ＝ 180cm3 / min A-76
●Lubrication
1
00 30,0 00 300 20,0 200 00 10,0 0 0 0 1 7,00 0 7 0 6,00 0 0 0 6 4,0 40 0 3,00 30 0 2,00 20 0 1,50 15 0 1,00 0 1 800 8 600 6 4 2
Fig. 11.6 Oil quantity guidelines
A-77
160 140 100 80 60 40 20 0
400 200
●External bearing sealing devices 12. External bearing sealing devices External seals have two main functions: to prevent lubricating oil from leaking out, and, to prevent dust, water, and other contaminants from entering the bearing. When selecting a seal, the following factors need to be taken into consideration: the type of lubricant (oil or grease), seal peripheral speed, shaft fitting errors, space limitations, seal friction and resultant heat increase, and cost. Sealing devices for rolling bearings fall into two main classifications: non-contact seals and contact seals.
action through the contact pressure of a resilient part of the seal (the lip is often made of synthetic rubber) and the sealing surface. Contact seals are generally far superior to non-contact seals in sealing efficiency, although their friction torque and temperature rise coefficients are higher. Furthermore, because the lip portion of a contact seal rotates while in contact with the shaft, the allowable seal peripheral speed varies depending on seal type.
¡Non-contact seals: Non-contact seals utilize a small clearance between the shaft and the housing cover. Therefore friction is negligible, making them suitable for high speed applications. In order to improve sealing capability, clearance spaces are often filled with lubricant.
Lubrication is necessary at the contact surface between the lip portion of the contact seal and the shaft. Ordinary bearing lubricant can also be used for this purpose. The following chart lists the special characteristics of seals and other points to be considered when choosing an appropriate seal.
¡Contact seals: Contact seals accomplish their sealing Type
Seal construction
Name
Seal characteristics and selection considerations
Clearance seal
This is an extremely simple seal design with a small radial clearance.
Oil groove seal
Several concentric oil grooves are provided on the housing inner diameter to greatly improve the sealing effect. When the grooves are filled with lubricant, the intrusion of contaminants from the outside is prevented.
(oil grooves on housing side)
Oil groove seal
Non-contact seals
(oil grooves on shaft and housing side)
Oil grooves are provided on both the shaft outer diameter and housing inner diameter for a seal with even greater sealing efficiency.
Axial labyrinth seal
This seal has a labyrinth passageway on the axial side of the housing.
Radial labyrinth seal
A labyrinth passageway is affixed to the radial side of the housing. For use with split housings. This offers better sealing efficiency than axial labyrinth seals.
Aligning labyrinth seal
The seal's labyrinth passageway is slanted and has sufficient clearance to prevent contact between the housing projections and the shaft even as the shaft realigns.
A-78
Cautionary points regarding selection ・In order to improve sealing efficiency, clearances between the shaft and housing should be minimized. However, care should be taken to confirm shaft/bearing rigidity and other factors to avoid direct shaft-housing contact during operation.
Oil groove clearance (reference) Shaft diameter mm
Clearance mm
50 Up to 0.2∼0.4 50 or above 0.5∼1.0 ・Oil groove width, depth (reference) width : 2∼5 mm depth : 4∼5 mm ・Three or more oil grooves should be provided. ・Sealing efficiency can be further improved by filling the oil groove portion with grease of which the viscosity grade is 150 to 200. ・Grease is generally used as the lubricant for labyrinth seals, and, except in low speed applications, is commonly used together with other sealing devices.
Cautionary points regarding selection ・In order to improve sealing efficiency, labyrinth passageway clearances should be minimized. However, care should be taken to confirm shaft/bearing rigidity, fit, internal clearances and other factors to avoid direct contact between labyrinth projections during operation.
Labyrinth clearance (reference) Shaft Clearance mm diameter mm Radial direction Axial direction ー∼ 50 0.2∼0.4 50∼200 0.5∼1.0
1.0∼2.0 3.0∼5.0
・Sealing efficiency can be further improved by filling the labyrinth passageway with grease of which the viscosity grade is 150 to 200. ・Labyrinth seals are suitable for high speed applications.
●External bearing sealing devices Type
Seal construction
Name Oil comb sleeve
Non-contact seals
Internal slinger
External slinger
Seal characteristics and selection considerations In this design, lubricating oil that makes its way out of the housing along the shaft is thrown off by projections on the oil comb sleeve and recirculated.
By providing a slinger inside the housing, centrifugal force guides the lubricant flow back on the bearing and helps prevent it from dirtying the work environment.
By mounting a slinger on the outside of the housing, centrifugal force helps to prevent dust and other solid contaminants from entering.
Contact seals A-79
Cautionary points regarding selection ・By installation on the revolving shaft, these seal types make use of centrifugal force to aid lubrication, seal in lubricant, and prevent the entrance of contaminants. ・Installation of a slinger inside the housing further enhances the sealing in of lubricants. ・Installation of a slinger on the outside of the housing will provide greater protection against dust and other bearing contaminants. ・These seal types are commonly employed together with other sealing devices.
●External bearing sealing devices Type
Seal construction
Name
Seal characteristics and selection considerations
Combination seals
Z-seal + Labyrinth seal
This is an example of an axial labyrinth seal which has been combined with a Z-seal to increase its sealing efficiency. The axial labyrinth seal is affixed to the shaft with a setting bolt or other method. In the diagram on the left, both the direction of the Z-seal and the labyrinth seal are oriented to keep dust and other contaminants out of the bearing. Because a Z-seal has been incorporated, the allowable peripheral speed should not exceed 6 m/s.
Labyrinth seal + Oil groove seal + Slinger
This is an example of a combination of three different non-contact seals. It has the advantage of preventing both lubricant leakage from inside the bearing and infiltration of dust and other contaminants from the outside. It is widely used on mining equipment and as a sealing system with plummer blocks in extremely dusty application conditions.
Oil groove seal + Slinger + Z-seal
This is an example where an oil groove seal and slinger have been combined with a Z-seal to increase its sealing efficiency. In the diagram on the left, all three seals have been oriented to keep dust and other contaminants out of the bearing. The combination is widely used on mining equipment and as a sealing system with plummer blocks in extremely dusty application conditions.
A-80
●Bearing Materials 13. Bearing Materials For standard high temperature bearings used at temperatures from 150˚C – 200˚C, the addition of silicone to the steel improves heat resistance and results in a bearing with excellent rolling fatigue life with minimal dimensional change or softening at high temperatures.
13.1 Raceway and rolling element materials While the contact surfaces of a bearing's raceways and rolling elements are subjected to repeated heavy stress, they still must maintain high precision and rotational accuracy. To accomplish this, the raceways and rolling elements must be made of a material that has high hardness, is resistant to rolling fatigue, is wear resistant, and has good dimensional stability. The most common cause of fatigue cracking in bearings is the inclusion of non-metallic impurities in the steel. By using pure materials low in these non-metallic impurities, the rolling fatigue life of the bearing is lengthened.
A variety of heat resistant steels are also incorporated in bearings to minimize softening and dimensional changes when used at high temperatures. Two of these are high speed molybdenum steel and high speed tungsten steel. For bearings requiring heat resistance in high speed applications, there is also heat resistant case hardening molybdenum steel.
For all NTN bearings, steel low in oxygen content and non-metallic impurities, then refined by a vacuum degassing process as well as outside hearth smelting, is used. For bearings requiring especially high reliability and long life, steels of even higher in purity, such as vacuum smelted steel (VIM, VAR, CEVM) and electro-slag melted steel (ESR), are used.
4) Corrosion resistant bearing steel For applications requiring high corrosion resistance, stainless steel is used. To achieve this corrosion resistance a large proportion of the alloying element chrome is added to martensite stainless steel. 5) Induction hardened steel Besides the use of surface hardening steel, induction hardening is also utilized for bearing raceway surfaces, and for this purpose mid-carbon steel is used for its lower carbon content instead of through hardened steel. For induction hardening of the deep layers required for larger bearings and bearings with large surface dimensions, mid-carbon steel is fortified with chrome and molybdenum.
1) High/mid carbon alloy steel In general, steel varieties which can be hardened not just on the surface but also deep hardened by the socalled "through hardening method" are used for the raceways and rolling elements of bearings. Foremost among these is high carbon chromium bearing steel, which is widely used. For large type bearings and bearings with large cross sectional dimensions, induction hardened bearing steel incorporating manganese or molybdenum is used. Also in use is mid-carbon chromium steel incorporating silicone and manganese, which gives it hardening properties comparable to high carbon chromium steel.
6) Other bearing materials For ultra high speed applications and applications requiring very high level corrosion resistance, ceramic bearing materials such as Si3N4 are also available.
2) Case hardened (carburized) steel Because of its combination of a hard surface layer which has been carburized and hardened to an appropriate depth, and a relatively pliable inner core, case hardened steel has excellent efficiency against shock loads. NTN uses case hardened steel for almost all of its tapered roller bearings. In terms of case hardened steel for NTN's other bearings, chromium steel and chrome molybdenum steel are used for small to medium sized bearings, and nickel chrome molybdenum steel is used for large sized bearings. 3) Heat resistant bearing steel When bearings made of ordinary high carbon chromium steel which have undergone standard heat treatment are used at temperatures above 120˚C for long durations, unacceptably large dimensional changes can occur. For this reason, a dimension stabilizing treatment (TS treatment) has been devised for very high temperature applications. Through application of this dimension stabilizing treatment, shortening of rolling fatigue life due to decreases in bearing hardness at high temperatures can be avoided. (refer to page insert A-17 3.4.2) A-81
●Bearing Materials
13.2 Cage materials Bearing cage materials must have the strength to withstand rotational vibrations and shock loads. These materials must also have a low friction coefficient, be light weight, and be able to withstand bearing operation temperatures. For small and medium sized bearings, pressed cages of cold or hot rolled steel with a low carbon content of approx. 0.1% are used. However, depending on the application, austenitic stainless steel is also used. For large bearings, machined cages of machine structural carbon steel or high tensile cast brass are widely used, although aluminum alloy and other material cages are also available. For aircraft engine bearings, high tensile brass, midcarbon nickel, chrome, or molybdenum steel is used after undergoing various heat treatments and high temperature tempering. The sliding properties of these materials may also be enhanced when silver plated. Injection molded plastic cages are now widely used: most are made from fiber glass reinforced heat resistant polyimide resin. Plastic cages are light weight, corrosion resistant and have excellent damping and sliding properties. Heat resistant polyimide resins now enable the production of cages that perform well in applications ranging between -40˚C – 120˚C. However, they are not recommended for use at temperatures exceeding 120˚C.
A-82
●Shaft and Housing Design 14. Shaft and Housing Design Depending upon the design of a shaft or housing, the shaft may be influenced by an unbalanced load or other factors which can then cause large fluctuations in bearing efficiency. For this reason, it is necessary to keep the following points in mind when designing or choosing the design for shafts and housings.
14.1 Fixing of bearings When fixing a bearing in position on a shaft or housing, there are many instances where the interference fit alone is not enough to hold the bearing in place. Bearings must be fixed in place by various methods so that they do not move axially when placed under load. Moreover, even bearings which are not subjected to axial loads (such as cylindrical roller bearings, etc.), must be fixed in place axially because of the potential for ring displacement due to momentary loads and resulting shaft flexure which may cause damage. Table 14.1 shows general bearing fixing methods, and Table 14.2 shows fixing methods for bearings with tapered bores.
1) Bearing arrangement selection; most effective fixing method for bearing arrangement 2) Suitable shaft and housing fillet radius and abutment height dimensions 3) Dimensions of fitted surfaces; shape accuracy and abutment squareness 4) Allowable bearing misalignment; finishing precision and installation error of shaft and housing suitable for allowable alignment angle
Table 14.1 General bearing fixing methods Inner ring clamp
Outer ring clamp
Snap ring
Use of snap rings regulated under JIS B 2804, B 2805, and B 2806, makes construction very simple. However, interference with chamfers, bearing installation dimensions, and other related specifications must be considered carefully.
The most common method of fixing bearings in place is to use clamping nuts or bolts to hold the bearing or housing abutment against the ring end face.
Snap rings are not suitable for applications requiring high accuracy and where the snap ring receives large axial loads.
Table 14.2 Fixing methods for bearings with tapered bores Adapter sleeve mounting
Withdrawal sleeve mounting
When installing bearings on cylindrical shafts, adapter sleeves or withdrawal sleeves can be used to fix bearings in place axially.
Split ring mounting
For installation of tapered bore bearings directly on tapered shafts, the bearing is held in place by a split ring inserted into a groove on the shaft, and is fixed in place by a split ring nut or screw.
Fixing the bearing axially in this way depends upon friction between the sleeve and shaft.
A-83
●Shaft and Housing Design
14.2.2 For spacer and ground undercut In cases where a fillet radius (ra) larger than the bearing chamfer dimension is required to strengthen the shaft or to relieve stress concentration (Fig. 14.1a), or where the shaft abutment height is too low to afford adequate contact surface with the bearing (Fig. 14.1b), spacers may be used effectively.
14.2 Bearing fitting dimensions 14.2.1 Abutment height and fillet radius The shaft and housing abutment height (h) should be larger than the bearings' maximum allowable chamfer dimensions (rs max), and the abutment should be designed so that it directly contacts the flat part of the bearing end face. The fillet radius must be smaller than the bearing's minimum allowable chamfer dimension (rs min) so that it does not interfere with bearing seating. Table 14.3 lists abutment height (h) and fillet radius (ra). For bearings to be applied to very large axial loads as well, shaft abutments (h) should be higher than the values in the table.
Table 14.3 Fillet radius and abutment height rs min
ras max
0.05 0.08 0.1 0.15 0.2 0.3 0.6 1 1.1 1.5 2 2.1 2.5 3 4 5 6 7.5 9.5 12 15 19
0.05 0.08 0.1 0.15 0.2 0.3 0.6 1 1 1.5 2 2 2 2.5 3 4 5 6 8 10 12 15
Relief dimensions for ground shaft and housing fitting surfaces are given in Table 14.4.
Unit mm
h（min） Normal use1
Special use2 0.3 0.3 0.4 0.6 0.8
1.25 2.25 2.75 3.5 4.25 5 6 6 7 9 11 14 18 22 27 32 42
1 2 2.5 3.25 4 4.5 5.5 5.5 6.5 8 10 12 16 20 24 29 38
Table 14.4 Relief dimensions for ground shaft
1 It is necessary to be larger abutment height than the above value under larger thrust load. 2 The values in this "Special Case" column should be adopted in cases where the thrust load is extremely small except for tapered roller bearings angular contact bearings, spherical roller bearings. Note: ras max maximum allowable fillet radius.
A-84
●Shaft and Housing Design
14.2.3 Thrust bearings and relief dimensions For thrust bearings, it is necessary to make the raceway back face sufficiently broad in relation to load and rigidity, and relief dimensions from the dimension tables should be adopted. (Figs. 14.2 and 14.3) For this reason, shaft and abutment heights will be larger than for radial bearings. (Refer to dimension tables for all thrust bearing relief dimensions.)
14.4 Allowable bearing misalignment A certain amount of misalignment of a bearing's inner and outer rings occurs as a result of shaft flexure, shaft or housing finishing irregularities, and minor installation error. In situations where the degree of misalignment is liable to be relatively large, self-aligning ball bearings, spherical roller bearings, bearing units and other bearings with aligning properties are advisable. Although allowable misalignment will vary according to bearing type, load conditions, internal clearances, etc., Table 14.6 lists some general misalignment standards for normal applications. In order to avoid reduced wear life and cage abrasion, it is necessary to maintain levels of misalignment below these standard levels. Table 14.6 Bearing type and allowable misalignment/alignment allowance Allowable misalignment
Fig. 14.2
Deep groove ball bearings Angular contact ball bearings Single row Multi row back to back arrangement Face to face arrangement Cylindrical roller bearings Bearing series 2, 3, 4 Bearing series 22, 23, 49, 30
Fig. 14.3
14.3 Shaft and housing accuracy Table 14.5 shows the accuracies for shaft and housing fitting surface dimensions and configurations, as well as fitting surface roughness and abutment squareness for normal operating conditions.
Tapered roller bearings Single row/back to back arrangement Face-to-face arrangement Needle roller bearings Thrust bearings excluding self-aligning roller thrust bearings
Table 14.5 Shaft and housing accuracy Characteristics Dimensional accuracy Circularity (max.) Cylindricity
Shaft
Housing
IT6 (IT5)
IT7 (IT5)
IT3
IT4
1/1,000∼1/300 1/1,000 1/10,000 1/10,000 1/1,000 1/1,000 1/2,000
1/2,000 1/1,000 1/2,000 1/10,000
Alignment allowance
Abutment squareness
IT3
IT3
Fitted Small size bearings surface roughness Mid-large size bearings
0.8a
1.6a
1.6a
3.2a
Note: For precision bearings (P4, P5 accuracy), it is necessary to increase the circularity and cylindricity accuracies in this table by approximately 50%. For more specific information, please consult the NTN precision rolling bearing catalog.
A-85
Self-aligning ball bearings Spherical roller bearings
1/20 1/50∼1/30
Self-aligning roller thrust bearings Ball bearing units Without cover With cover
1/30 1/30 1/50
●Bearing Handling
15.2.1 Installation preparations Bearings should be fitted in a clean, dry work area. Especially for small and miniature bearings, a "clean room" should be provided as any contamination particles in the bearing will greatly affect bearing efficiency. Before installation, all fitting tools, shafts, housings, and related parts should be cleaned and any burrs or cutting chips removed if necessary. Shaft and housing fitting surfaces should also be checked for roughness, dimensional and design accuracy, and to ensure that they are within allowable tolerance limits. Bearings should not be unwrapped until just prior to installation. Normally, bearings to be used with grease lubricant can be installed as 7nd .outips reittinn trl jhey
●Bearing Handling
220
50 ℃
℃
260 240
40 ℃
Diametric expansion of inner ring bore μm
240
60
260
280 80℃ 70 ℃
Ris diff e in te bef erence mp. hea ore/af bea ting ter ring 90℃
280
200 r6
inner ring
220 30
℃
200
180
180
160
160
140
p6
140
120
n6
120
100
m6
100
80
Removal pawl Fig. 15.6 Removal of inner ring using an induction heater
80
60
k5
60
40
j5
40
20
20
50
100 150 200 250 300 350 400 450
500 550 600
Bearing bore diameter mm
Fig. 15.5 Temperature differential required for shrinkage fit of inner ring
the amount of thermal expansion. In any event, bearings should never be heated above 120˚C. The most commonly used method of heating bearings is to immerse them in hot oil. However, this method should not be used for prelubricated shielded and sealed bearings. To avoid overheating parts of the bearings they should never be brought into direct contact with the heat source, but instead should be suspended inside the heating tank or placed on a wire grid. If bearings are dry-heated with a heating cabinet or hot plate, they can be mounted without drying. For heating the inner rings of Nu, NJ or NUP cylindrical and similar type bearings without any ribs or with only a single rib, an induction heater can be used to quickly heat bearings in a dry state (always demagnetize). When heated bearings are installed on shafts, the inner rings must be held against the shaft abutment until the bearing has been cooled in order to prevent gaps from occurring between the ring and the abutment face. As shown in Fig. 15.6, a removal pawl, or tool, can also be used to dismount the inner ring when using the induction heating method described above.
a) Installation on tapered bore b) Installation with adapter sleeve
c) Installation using withdrawal sleeve Fig. 15.7 Installation methods using locknuts
15.2.3 Installation of tapered bore bearings Small type bearings with tapered bores are installed over a tapered shaft, withdrawal sleeves, or adapter sleeves by driving the bearing into place using a locknut. The locknut is tightened using a hammer or impact wrench. (Fig. 15.7) Large size bearings require considerable fitting force and must be installed hydraulically. In Fig. 15.8 the fitting surface friction and nut tightening
Fig. 15.8 Installation utilizing oil injection
A-87
●Bearing Handling
Fig. 15.10 Installation using hydraulic withdrawal sleeve
Fig. 15.11 Internal clearance measurement method for spherical roller bearings
torque needed to install bearings with tapered bores directly onto tapered shafts are decreased by injecting high pressure oil between the fitting surfaces. Fig. 15.9 a) shows one method of installation where a hydraulic nut is used to drive the bearing onto a tapered shaft. Fig. 15.9 b) and c) show installation using a hydraulic nut with adapter sleeves and withdrawal sleeves. Fig. 15.10 shows an installation method using a hydraulic withdrawal sleeve. With tapered bore bearings, as the inner ring is driven axially onto the shaft or adapter or withdrawal sleeve, the interference will increase and the bearing internal radial clearance will decrease. The amount of interference can be estimated by measuring the amount or radial clearance decrease. As shown in Fig. 15.11, the internal radial clearance between the rollers and outer ring of spherical roller bearings should be measured with a thickness gauge under no load while the rollers are held in the correct position. The measured clearance should be the same for both rows. Instead of using the decrease in amount of internal radial clearance to estimate the interference, it is possible to estimate by measuring the distance the bearing has been driven onto the shaft. For spherical roller bearings, Table 15.1 indicates the appropriate interference which will be achieved as a result of the internal radial clearance decrease, or the distance the bearing has been driven onto the shaft. For conditions such as heavy loads, high speeds, or when there is a large temperature differential between the inner and outer rings, etc. which necessitate large A-88
●Bearing Handling
Table 15.1 Installation of tapered bore spherical roller bearings Nominal bearing bore diameter d Over incl.
Reduction of radial internal clearance
Units mm
Minimum allowable residual clearance
Axial displacement drive up Taper, 1:12
Taper, 1:30
Min
Max
Min
Max
Min
Max
CN
C3
C4
30 40 50
40 50 65
0.02 0.025 0.03
0.025 0.03 0.035
0.35 0.4 0.45
0.4 0.45 0.6
ー ー ー
ー ー ー
0.015 0.02 0.025
0.025 0.03 0.035
0.04 0.05 0.055
65 80 100
80 100 120
0.04 0.045 0.05
0.045 0.055 0.06
0.6 0.7 0.75
0.7 0.8 0.9
ー 1.75 1.9
ー 2.25 2.25
0.025 0.035 0.05
0.04 0.05 0.065
0.07 0.08 0.1
120 140 160
140 160 180
0.065 0.075 0.08
0.075 0.09 0.1
1.1 1.2 1.3
1.2 1.4 1.6
2.75 3 3.25
3 3.75 4
0.055 0.055 0.06
0.08 0.09 0.1
0.11 0.13 0.15
180 200 225
200 225 250
0.09 0.1 0.11
0.11 0.12 0.13
1.4 1.6 1.7
1.7 1.9 2
3.5 4 4.25
4.25 4.75 5
0.07 0.08 0.09
0.1 0.12 0.13
0.16 0.18 0.2
250 280 315
280 315 355
0.12 0.13 0.15
0.15 0.16 0.18
1.9 2 2.4
2.4 2.5 2.8
4.75 5 6
6 6.25 7
0.1 0.11 0.12
0.14 0.15 0.17
0.22 0.24 0.26
355 400 450
400 450 500
0.17 0.2 0.21
0.21 0.24 0.26
2.6 3.1 3.3
3.3 3.7 4
6.5 7.75 8.25
8.25 9.25 10
0.13 0.13 0.16
0.19 0.2 0.23
0.29 0.31 0.35
500 560 630
560 630 710
0.24 0.26 0.3
0.3 0.33 0.37
3.7 4 4.6
4.6 5.1 5.7
9.25 10 11.5
11.5 12.5 14.5
0.17 0.2 0.21
0.25 0.29 0.31
0.36 0.41 0.45
710 800 900
800 900 1,000
0.34 0.37 0.41
0.43 0.47 0.53
5.3 5.7 6.3
6.7 7.3 8.2
13.3 14.3 15.8
16.5 18.5 20.5
0.23 0.27 0.3
0.35 0.39 0.43
0.51 0.57 0.64
1,000 1,120
1,120 1,250
0.45 0.49
0.58 0.63
6.8 7.4
8.7 9.4
17 18.5
22.5 24.5
0.32 0.34
0.48 0.54
0.7 0.77
Fig. 15.12 Axial internal clearance adjustment
Shim
Fig. 15.13 Measurement of axial internal clearance adjustment
Fig. 15.14 Internal clearance adjustment using shims
A-89
●Bearing Handling
15.4 Post installation running test To insure that the bearing has been properly installed, a running test is performed after installation is completed. The shaft or housing is first rotated by hand and if no problems are observed a low speed, no load power test is performed. If no abnormalities are observed, the load and speed are gradually increased to operating conditions. During the test if any unusual noise, vibration, or temperature rise is observed the test should be stopped and the equipment examined. If necessary, the bearing should be disassembled for inspection. To check bearing running noise, the sound can be amplified and the type of noise ascertained with a listening instrument placed against the housing. A clear, smooth and continuous running sound is normal. A high, metallic or irregular sound indicates some error in function. Vibration can be accurately checked with a vibration measuring instrument, and the amplitude and frequency characteristics measured against a fixed standard. Usually the bearing temperature can be estimated from the housing surface temperature. However, if the bearing outer ring is accessible through oil inlets, etc., the temperature can be more accurately measured. Under normal conditions, bearing temperature rises with rotation time and then reaches a stable operating temperature after a certain period of time. If the temperature does not level off and continues to rise, or if there is a sudden temperature rise, or if the temperature is unusually high, the bearing should be inspected.
（a）
（b）
Fig. 15.15 Puller disassembly
Fig. 15.16 Press disassembly
15.5 Bearing disassembly Bearings are often removed as part of periodic inspection procedures or during the replacement of other parts. However, the shaft and housing are almost always reinstalled, and in more than a few cases the bearings themselves are reused. These bearings, shafts, housings, and other related parts must be designed to prevent damage during disassembly procedures, and the proper disassembly tools must be employed. When removing inner and outer rings which have been installed with interference fits, the dismounting force should be applied to that ring only and not applied to other parts of the bearing, as this may cause internal damage to the bearing's raceway or rolling elements.
Groove
Groove Fig. 15.17 Extracting grooves
15.5.1 Disassembly of bearings with cylindrical bores For small type bearings, the pullers shown in Fig. 15.15 a) and b) or the press method shown in Fig. 15.16 can be used for disassembly. When used properly, these methods can improve disassembly efficiency and prevent damage to bearings. To facilitate disassembly procedures, attention should be given to planning the designs of shafts and housings, such as providing extraction grooves on the shaft and housing for puller claws as shown Figs. 15.17 and 15.18. Threaded bolt holes should also be provided in housings to facilitate the pressing out of outer rings as shown in Fig. 15.19.
Groove
Fig. 15.18 Extraction groove for outer ring disassembly
A-90
●Bearing Handling
Large bearings, installed with tight fits, and having been in service for a long period of time, will likely have developed fretting corrosion on fitted surfaces and will require considerable dismounting force. In such instances, dismounting friction can be reduced by injecting oil under high pressure between the shaft and inner ring surfaces as shown in Fig. 15.20. For NU, NJ and NUP type cylindrical roller bearings, the induction heating method shown in Fig. 15.6 can also be used for easier disassembly of the inner ring. This method is highly efficient for frequent disassembly of bearings with identical dimensions.
15.5.2 Disassembly of bearings with tapered bores Small type bearings with adapters can be easily disassembled by loosening the locknut and driving the inner ring off with a metal block as shown in Fig. 15.21. Bearings which have been installed with withdrawal sleeves can be disassembled by tightening down the lock nut as shown in Fig. 15.22. For large type bearings on tapered shafts, adapters, or withdrawal sleeves, disassembly is greatly facilitated by hydraulic methods. Fig. 15.23 shows one method of hydraulic injection disassembly in which high pressure oil is injected between the fitted surfaces of the tapered shaft and bearing.
Metal block
Fig. 15.19 Outer ring disassembly bolt
Fig. 15.21 Disassembly of bearing with adapter
High pressure oil
High pressure oil
Fig. 15.20 Disassembly using high pressure oil (hydraulic)
Fig. 15.22 Disassembly of bearing with withdrawal sleeve
Metal block
Fig. 15.23 Disassembly using high pressure oil (hydraulic)
A-91
●Bearing Handling
Fig. 15.24 shows two methods of disassembling bearings with adapters or withdrawal sleeves using a hydraulic nut. Fig. 15.25 shows a disassembly method using a hydraulic withdrawal sleeve where high pressure oil is injected between fitted surfaces and a nut is then employed to extract the sleeve.
a) Disassembly of adapter sleeve
b) Disassembly of withdrawal sleeve fig. 15.24 Disassembly using hydraulic nut
Fig. 15.25 Extraction using hydraulic withdrawal sleeve
A-92
●Bearing Damage and Corrective Measures 16. Bearing Damage and Corrective Measures While it is of course impossible to directly observe bearings in operation, one can get a good idea of how they are operating by monitoring noise, vibration, temperature
and lubricant condition. Types of damage typically encountered are presented in Table 16.1.
Table 16.1 Bearing damage and corrective measures Description
Causes
Correction
The surface of the race way wearing away. Conspicuous hills and valleys form soon afterward.
¡Excessive loads or improper handling. ¡Improper mounting. ¡Improper precision in the shaft or housing. ¡Insufficient clearance. ¡Contamination. ¡Rust. ¡Drop in hardness due to abnormally high temperatures.
¡Review application conditions. ¡Select a different type of bearing. ¡Reevaluate the clearance. ¡Improve the precision of the shaft and housing. ¡Reevaluate the layout (design) of the area around the bearing. ¡Review assembly procedures. ¡Review lubricant type and lubrication methods.
Seizure
The bearing heats up and becomes discolored. Eventually the bearing will seize up.
¡Insufficient clearance (including clearances made smaller by local deformation). ¡Insufficient lubrication or improper lubricant. ¡Excessive loads (excessive pressure). ¡Skewed rollers.
¡Check for proper clearance. (Increase clearances.) ¡Riview lubricant type and quantity. ¡Review application conditions. ¡Take steps to prevent misalignment. ¡Reevaluate the design of the area around the bearing (including fitting of the bearing). ¡Improve assembly procedures.
Cracking and notching
Localized flaking occurs. Little cracks or notches appear.
¡Excessive shock loads. ¡Excessive interference. ¡Large flaking. ¡Friction cracking. ¡Inadequate abutment or chamfer. ¡Improper handling. (gouges from large foreign objects.)
¡Review application conditions. ¡Select proper interference and review materials. ¡Improve assembly procedures and take more care in handling. ¡Take measures to prevent friction cracking. (Review lubricant type.) ¡Reevaluate the design of the area around the bearing.
Retainer damage
Rivets break or become loose resulting in retainer damage.
¡Excessive moment loading. ¡High speed or excessive speed fluctuations. ¡Inadequate lubrication. ¡Impact with foreign objects. ¡Excessive vibration. ¡Improper mounting. (Mounted misaligned) ¡Abnormal temperature rise. (Plastic retainers)
¡Review of application conditions. ¡Reevaluation of lubrication conditions. ¡Review of retainer type selection. ¡Take more care in handling. ¡Investigate shaft and housing rigidity.
Flaking
¡Reinspect bearing’s internal clearances. ¡Review accuracy of shaft and housing finish. ¡Review rigidity of shaft and housing.
Meandering wear patterns
Abrasion or an irregular, meandering ¡Shaft or housing of insufficient accuracy. wear pattern left by rolling elements ¡Improper installation - Insufficient shaft along raceway or housing rigidity. surfaces. ¡Shaft whirling caused by excessive internal bearing clearances.
Smearing and scuffing
The surface becomes rough and some small deposits form. Scuffing generally refers to roughness on the race collar and the ends of the rollers.
¡Inadequate lubrication. ¡Entrapped foreign particles. ¡Roller skewing due to a misaligned bearing. ¡Bare spots in the collar oil film due to large axial loading. ¡Surface roughness. ¡Excessive slippage of the rolling elements.
¡Reevaluation of the lubricant type and lubrication method. ¡Review of operating conditions. ¡Setting of a suitable pre-load. ¡Improve sealing performance. ¡Take care to handle the bearing properly.
The surface becomes either partially or fully rusted, and occasionally rust even occurs along the rolling element pitch lines.
¡Poor storage conditions. ¡Poor packaging. ¡Insufficient rust inhibitor. ¡Penetration by water, acid, etc. ¡Handling with bare hands.
¡Take measures to prevent rusting while in storage. ¡Improve sealing performance. ¡Periodically inspect the lubricating oil. ¡Take care when handling the bearing.
Rust and corrosion
A-93
●Bearing Damage and Corrective Measures
Table 16.1 Bearing damage and corrective measures Description
Causes
Correction
There are two types of fretting. In one, a rusty wear powder forms on the mating surfaces. In the other, brinelling indentations form on the raceway at the rolling element pitch.
¡Insufficient interference. ¡Small bearing oscillation angle. ¡Insufficient lubrication. ¡Fluctuating loads. ¡Vibration during transport.
¡Review the interference and apply a coat of lubricant. ¡Pack the inner and outer rings separately for transport. ¡When the two cannot be separated, apply a pre-load. ¡Select a different kind of lubricant. ¡Select a different type of bearing.
The surfaces wear and dimensional deformation results. Wear is often accompanied by roughness and scratches.
¡Entrapment of foreign particles in the lubricant. ¡Inadequate lubrication. ¡Skewed rollers.
¡Review lubricant type and lubrication methods. ¡Improve sealing performance. ¡Take steps to prevent misalignment.
Electrolytic corrosion
Pits form on the raceway. The pits gradually grow into ripples.
¡Electric current flowing through the rollers. ¡Create a bypass circuit for the
Dents and scratches
Scoring during assembly, gouges due to hard foreign objects, and surface denting due to mechanical shock.
¡Entrapment of foreign objects. ¡Bite-in on the flaked-off side. ¡Dropping or other mechanical shocks due to careless handling. ¡Assembled misaligned.
¡Improve handling and assembly methods. ¡Take measures to prevent the entrapment of foreign objects. ¡Should the damage have been caused by little pieces of metal, thoroughly check all other locations.
Slipping is accompanied by Slipping or creeping mirrorlike or discolored surfaces on the ID and OD. Scuffing may also occur.
¡Insufficient interference in the mating section. ¡Sleeve not fastened down properly. ¡Abnormal temperature rise. ¡Excessive loads.
¡Reevaluate the interference. ¡Reevaluate usage conditions. ¡Review the precision of the shaft and housing.
Fretting
Wear
Surface matting
Peeling
current. ¡Insulate the bearing so that current does not pass through it.
Luster of raceway surfaces is gone; ¡Infiltration of bearing by foreign matter. surface is matted, rough, and / or ¡Insufficient lubrication. evenly dimpled. Surface covered with minute dents.
¡Reevaluation of lubricant type and lubrication method. ¡Review sealing mechanisms. ¡Examine lubrication oil purity. (filter may be excessively dirty, etc.)
Patches of minute flaking or peeling (size, approx. 10μm). Innumerable hair-line cracks visible though not yet peeling. (This type of damage frequently seen on roller bearings.)
¡Reevaluation of lubricant type and lubrication method. ¡Improve sealing performance. (to prevent infiltration of foreign matter) ¡Take care to operate smoothly.
¡Infiltration of bearing by foreign matter. ¡Insufficient lubrication.
A-94
●Technical Data ※This data is based on typical dimensions. NTN do not guarantee at this data.
17. Technical data
0.50
0.50
0.40
0.40 Axial internal clearance mm
Axial internal clearance mm
17.1 Deep groove ball bearing radial internal clearances and axial internal clearances
0.30 0.20 30 68 20 68 15 05 8 6 10 68 68 00 68
0.10 0.08 0.06 0.05 0.003
0.005
0.01
0.02
0.03
0.30
0.10 0.08 0.06 0.05 0.003
0.05
30 60 20 60 15 05 60 10 60 60 00 60
0.20
0.005
0.50
0.50
0.40
0.40
0.30
30 69 0 2 69 15 69 10 69 05 69 00 69
0.08 0.06 0.05 0.003
0.005
0.01
0.02
0.03
0.05
Fig. 17.1.3 Series 60 radial internal/axial internal clearances
Axial internal clearance mm
Axial internal clearance mm
fig. 17.1.1 Series 68 radial internal/axial internal clearances
0.10
0.02
Radial internal clearance mm
Radial internal clearance mm
0.20
0.01
0.03
0.30
0.10 0.08 0.06 0.05 0.003
0.05
30 62 20 62 5 1 62 10 62 05 62 00 62
0.20
0.005
0.01
0.02
0.03
0.05
Radial internal clearance mm
Radial internal clearance mm Fig. 17.1.2 Series 69 radial internal/axial internal clearances
Fig. 17.1.4 Series 62 radial internal/axial internal clearances
17.2 Angular contact ball bearing axial load and axial displacement
C
1
10
79
79
C 20
79
0C
793
0.03
mm
79 05 C
0.04 5C
Axial displacement
Axial displacement
mm
0.04
0.02
0.01
0 0
0.5
1.0
1.5
2.0
0.03 5
790
0.02
7910 7915 7920
0.01
7930
0
3
2.5×10 N
0
Axial load
0.5
1.0
1.5
2.0
Axial load
Fig. 17.2.1 Series 79 C axial load and axial displacement
Fig. 17.2.2 Series 79 axial load and axial displacement
A-95
3
2.5×10 N
●Technical Data
0.01
0
0
0.5
1.0 1.5 Axial load
2.0
Fig. 17.2.3 Series 70 C axial load and axial displacement
mm Axial displacement
Axial displacement mm
00
70
05
70
0.02
7010 5
701
0.01
7020
7030
0
0.5
1.0 1.5 Axial load
2.0
0
05
0.5
1.0 1.5 Axial load
3
2.5×10 N
2.0
0.03
00
72
0.02
5 720 0 721
7215
0.01
7220
7230
0
0.5
1.0
1.5
3
2.5×10 N
2.0
Axial load Fig. 17.2.7 Series 72 axial load and axial displacement
0.04 mm
0.04
0.03
0.02
0B 700
0.01
B 7005 B 7010
Axial displacement
mm
C
0.01
0
3
2.5×10 N
Fig. 17.2.4 Series 70 axial load and axial displacement
Axial displacement
30
0.04
0.03
7015B 7020B
7030B
0
72
Fig. 17.2.6 Series 72 C axial load and axial displacement
0.04
0
C C C 10 215 20 7 72
72
0.02
0
3
2.5×10 N
C
0C
0.02
0.03
72
7
C 15 0C 70 702 30C 70
720
C
0 01
Axial displacement mm
0.03
0.04
70 05 C
0C 700
Axial displacement mm
0.04
0
0.5
1.0 1.5 Axial load
2.0
0.03
0.02
7205B
Fig. 17.2.5 Series 70 B axial load and axial displacement
7210B
0.01
B
7215
B
7220
7230B
0
3
2.5×10 N
0B
720
0
0.5
1.0 1.5 Axial load
2.0
3
2.5×10 N
Fig. 17.2.8 Series 72 B axial load and axial displacement
A-96
●Technical Data
17.3 Tapered roller bearing axial load and axial displacement
Axial displacement mm
0.02 5X
00
32 T-
4
0.01
4T-
10X
320
5XU 3201
0XU
3202
0 0
1.0
2.0
3
4.0×10 N
3.0
Axial load FIg. 17.3.1 Series 320 axial load and axial displacement
Axial displacement mm
0.02 U 0X 91 2 3 U 15X 329 XU 20 329
0.01
0 0
1.0
2.0
3
4.0×10 N
3.0
Axial load Fig. 17.3.2 Series 329 axial load and axial displacement
30 5
0
31
30
-3 0
4T
4T
Axial displacement mm
0.02
5U
31
30
0.01
20U 303 5D 3030
4T-
10D 4T-303 30315DU
0 0
1.0
2.0
3.0
3
4.0×10 N
Axial load FIg. 17.3.3 Series 303/303 D axial load and axial displacement
A-97
●Technical Data
interference derived from the measured valued for the bearing bore diameter and shaft. This difference is due to the roughness or variations of the finished surfaces to be fitted, and therefore it is necessary to assume the following reductions in effective interference:
17.4 Fitting surface pressure Table 17.4.1 lists equations for calculating the pressure and maximum allowable stress between fitting surfaces. Table 17.4.2 can be used to determine the approximate average groove diameter for bearing inner and outer rings. The effective interference, in other words the actual interference after fitting, is smaller than the apparent
For ground shafts: 1.0 ∼ 2.5μm For lathed shafts : 5.0 ∼ 7.0μm
Table 17.4.1 Fitted surface pressure and maximum allowable stress
∆deff
2
d
d d
1- (
Di
2
)
do Di
Fitted surface pressure
Hollow steel shaft/ inner ring fit
P=
E
∆deff
2
［1- (d / Di) ］ ［1- (do / d) ］ 2
∆d
2
2
［1 - (do / Di) ］
∆deff E D
MPa ｛kgf / mm2｝
Steel housing/ outer ring fit
P=
Maximum Shaft / inner ring fit allowable stress MPa ｛kgf / mm2｝
Housing/ outer ring fit
E
2
2
∆Deff ［1 - (Do / D) ］ ［1 - (D / Dh) ］
2
σt max = P σt max = P
［1 - (Do /Dh) ］
D
1 + (d / Di)
2
1 – (d / Di) 2
Outer ring inner diameter face maximum allowable stress
2
1 – (Do / D)
Average groove diameter Bearing type
Deep groove ball bearings
All types
Cylindrical roller bearings1 All types Spherical All types roller bearings
1.05
4d + D
Outer ring ( Do ) 0.95
5 0.98 4 2d + D 3
d + 4D 5
3d + D 1.05
d + 3D 4
0.97
Dh ∆Deff
: Housing inner diameter, bearing outer diameter : Outer ring average groove diameter : Housing outer diameter : Effective interference
Inner ring bore diameter face maximum allowable stress
2
Table 17.4.2 Average groove diameter
Inner ring ( Di )
Do
2
: Shaft diameter, inner ring bore diameter : Hollow shaft inner diameter : Inner ring average groove diameter : Effective interference : Elasticity factor = 208,000 MPa｛ 21,200 kgf / mm2 ｝
d + 4D 5
d: Inner ring bore diameter mm D: Outer ring outer diameter mm 1 Average groove diameter values shown for double rib type.
A-98
D Dh
P=
E
do d
Solid steel shaft/ inner ring fit
Di
Codes (units: N ｛kgf｝ , mm)
Equation
Do
Fit conditions
Pm
2 MPa kgf/mm 250 25 200 20 150 15
kgf/mm2 MPa 5 50 4 40 3 30
2
20
1
10
100
10
50 40
5 4
30
3
20
2
10
1
p6 n6 m5 k5
0.5 0.4
5 4
0.3
3
0.2
2
0.1
1
js5
5 20
30
50
70 100
200 300
17.5 Necessary press fit and pullout force Equations (7.1) and (7.2) below can be used to calculate the necessary pullout force for press fit for inner rings and shafts or outer rings and housings. For shaft and inner rings: Kd = μ・P・π・d・B …………………………(7.1) KD = μ・P・π・D・B …………………………(7.2) Where, Kd : Inner ring press fit or pullout force N｛kgf｝ KD : Outer ring press fit or pullout force N｛kgf｝ P : Fitted surface pressure MPa｛kgf/mm2｝ (Refer to Table 17.4.1) d : Shaft diameter, inner ring bore diameter mm D : Housing inner diameter, outer ring outer diameter mm B : Inner or outer ring width μ : Sliding friction coefficient (Refer to Table 17.5.1)
Maximum allowable stress
Fitted surface pressure
●Technical Data
σt max
0.5
500
Nominal bearing bore diameter (Class 0)
mm
Fig. 17.4.1 Average fit interference as it relates to surface pressure and max. allowable stress
Table 17.5.1 Press fit and pullout sliding friction coefficient
5 4
Pm
0.5 0.4
5 4
0.3
3
0.2
2
MPa kgf/mm2 400 40
50 40
3
30
2
20
n6
10
m5 k5 js5
1
p6
20
30
50
70 100
200 300
300 250 200
30 25 20
150
15
100
10
50
5
40 30
4 3
20
2
10
1
Maximum allowable stress
Fitted surface pressure
kgf/mm2 MPa 10 100
σt max
500
Nominal bearing bore diameter (Class 0)
mm
Fig. 17.4.2 Maximum fit interference as it relates to surface pressure and max. allowable stress
A-99
Type
μ
Inner (outer) ring press fit onto cylindrical shaft (bore) Inner (outer) ring pullout from cylindrical shaft (bore) Inner ring press fit onto tapered shaft or sleeve Inner ring pullout from tapered shaft Sleeve press fit onto shaft/bearing Sleeve pullout from shaft/bearing
0.12 0.18 0.17 0.14 0.30 0.33
A-100
Ball and Roller Bearings
INDEX OF BEARING TABLES
Deep Groove Ball Bearings ………………………………………………………………… B-5 Deep groove ball bearings
67,68,69,160,60,62,63,64 …………………………………………… B-8
Expansion compensating bearings
EC-60,EC-62,EC-63………………………………………… B-26
Miniature and Extra Small Ball Bearings …………………………………………… B-29 Metric system sizes Inch system sizes
67,68,69,60,62,63,BC ……………………………………………………… B-32 R,RA ……………………………………………………………………………… B-36
With ring grooves, snap rings
SC…………………………………………………………………… B-38
Angular Contact Ball Bearings …………………………………………………………… B-41 79,70,72,72B,73,73B ………………………………………… B-44
Single and duplex arrangements
78C,79C,70C,72C,73C ………………………… B-56
High speed single and duplex arrangements Ultra-high speed angular contact ball bearings Ceramic ball angular contact ball bearings Four-point contact ball bearings
BNT0,BNT2,HSB9C,HSB0C ………………… B-64
5S-BNT,5S-HSB …………………………………… B-68
QJ2,QJ3 ………………………………………………………… B-70
Double row angular contact ball bearings
52,53 ………………………………………………… B-72
Self-Aligning Ball Bearings ………………………………………………………………… B-77 12(K), 22(K), 13(K), 23(K) …………………………………………………………………………… B-78 Adapters for self-aligning ball bearings ……………………………………………………………… B-84
Cylindrical Roller Bearings ………………………………………………………………… B-89 NU,NJ,NUP,N,NF10,2,22,3,23,4 ……………………………………………………………………… B-92 L type loose rib
HJ2,22,3,23,4 ……………………………………………………………………… B-110
Multi-row cylindrical roller bearings
NN49(K),NNU49(K),NN30(K),NNU30(K) ………………… B-114
Four-row cylindrical roller bearings
4R …………………………………………………………… B-120
B-2
Tapered Roller Bearings …………………………………………………… B-131 Metric system sizes 329X,320X,330,331,302,322,322C,332,303,303D,313X,323,323C …………… B-138 Inch system sizes ……………………………………………………………………………………… B-156 Multi-row tapered roller bearings (outward facing type) 4130,4230,4131,4231,4302,4322,4303,4303D,4323 …………………………… B-194 Multi-row tapered roller bearings (inward facing type) 3230,3231………………………………… B-208 Four-row tapered roller bearings
CR0 ……………………………………………………………… B-212
Spherical Roller Bearings …………………………………………………………………… B-229 239(K),230(K),240(K30),231(K),241(K30),222(K),232(K),213(K),223(K) ……………………… B-232 Adapters for spherical roller bearings………………………………………………………………… B-252 Withdrawal sleeves for spherical roller bearings …………………………………………………… B-257
Thrust Bearings …………………………………………………………………………………… B-265 Single direction type
511,512,513,514 …………………………………………………………… B-270
Double row angular contact thrust ball bearings
5629(M),5620(M) …………………………… B-274
High speed duplex angular contact thrust ball bearings Self-aligning roller thrust bearings
HTA9DB,HTA0DB …………………… B-278
292,293,294 ………………………………………………… B-282
B-3
●Deep Groove Ball Bearings
Open type
Shielded type
Sealed type (non-contact)
Expansion Compensating Bearing
1. Design features and special characteristics Deep groove ball bearings are very widely used. A deep groove is formed on each inner and outer ring of the bearing enabling them to sustain radial and axial loads in either direction as well as well as the complex loads which result from the combination of these forces. Deep groove ball bearings are suitable for high speed applications.
In addition to the open type, deep groove ball bearings come in a number of varieties, including prelubricated bearings, bearings with one or both sides sealed or shielded, bearings with snap rings and high capacity specification, etc. Table 1 shows the construction and special characteristics of various sealed deep groove ball bearings.
Table 1 Sealed ball bearings: construction and characteristics Type, code no.
Shielded type Non-contact type ZZ
Sealed type Non-contact type LLB
Contact type LLU
Low torque type LLH
¡Metal shield plate is affixed to outside ring; inner ring incorporates a V-groove and labyrinth clearance.
¡Outer ring incorporates synthetic rubber molded to a steel plate; seal edge is aligned with V-groove along inner ring surface with labyrinth clearance.
¡Outer ring incorporates synthetic rubber molded to a steel plate; seal edge contacts V-groove along inner ring surface.
¡Basic construction the same as LU type, but specially designed lip on edge of seal prevents penetration by foreign matter; low torque construction.
Torque
Low
Low
Rather high
Medium
Dust proofing
Very good
Better than ZZ-type
Excellent
Much better than LLB-type
Water proofing
Poor
Poor
Very good
Very good
High speed capacity
Same as open type
Same as open type
Limited by contact seals
Much better than LLU-type
Allowable temp.range 1
Depends on lubricant
-25 ℃∼120 ℃
-25 ℃∼110 ℃
-25 ℃∼120 ℃
Construction
Performance comparison
1 Please consult NTN Engineering about applications which exceed the allowable temperature range of products listed on this table. Note : This chart lists double shielded and double sealed bearings, but single shielded (Z) and single sealed (LB, LU, LH) are also available. Grease lubrication should be used with single shielded and single sealed bearings.
B-5
●Deep Groove Ball Bearings
2. Standard cage types As shown in Table 2, pressed cages are generally used in deep groove ball bearings. However, machined cages are also used in larger sized bearings designed for high speed applications.
equipped outer ring and the light alloy bearing housing, a good interference fit can be achieved with stable performance across a wide temperature range. Another advantage is a large reduction in the occurrence of outer ring creeping.
Table 2 Standard cages for deep groove ball bearings Bearing series 67 68 69 160 60 62 63 64
Pressed cage
Machined cage
6700∼ 6706 6800∼ 6834 6900∼ 6934 16001∼16052 6000∼ 6052 6200∼ 6244 6300∼ 6344 6403∼ 6416
― 6836∼ 68／600 6936∼ 69／500 16056∼ 16072 6056∼ 6084 ― ― ―
(1) Allowable load Maximum allowable load Cp (refer to the table of boundary dimensions) has been determined in accordance with outer ring strength; therefore, it is necessary to select a bearing with a maximum allowable load greater than the largest anticipated bearing load. (2) Housing and bearing fit Table 3 shows the recommended fits for bearings with light metal alloy housings. In cases where the bearing is going to be interference fit with the housing, it is very important not to damage the high polymer material. Therefore it is essential that the lip of the housing diameter be given a 10˚–15˚ chamfer as shown in Diagram 2. Furthermore, as shown in Diagram 2, it is also advisable to apply the interference fit using a press in order not force the
3. Other bearing types 3. 1 Bearings with snap rings Some bearings accommodate a snap ring which is attached along the outer diameter of the outer ring. By using snap rings, positioning in the axial direction is possible and housing installation is simplified. In addition to open type, shielded and sealed types are also manufactured. Consult NTN Engineering.
Table 3 Recommended fits for outer ring and housing bore Conditions
3. 2 Expansion compensating bearings Expansion compensating bearings have the same boundary dimensions as standard bearings, except that a high polymer material with a large coefficient of thermal expansion has been inserted along the outer circumference of the outer ring. Due to the extremely small difference of thermal expansion attained between the fitted surfaces of the high polymer
High polymer material
Load type, etc.
Housing material
Rotating outer ring load Rotating inner ring load; light load Direction indeterminate load; ordinary load
Al alloy Mg alloy Other light alloys
Rotating outer ring load; heavy load Direction indeterminate load; shock load
Al alloy Mg alloy Other light alloys
0.5mm over
Suitable bearing
Housing bore tolerance class
Deep groove ball bearing H6 Cylindrical roller bearing Thickwalled type deep groove ball bearing
N6
10° ∼15°
Diagram 2. Fitting method and housing inner diameter chamfer
Diagram 1. Expansion compensating bearings
B-6
●Deep Groove Ball Bearings
3.4 AC bearings (creep prevention bearings)
bearing into the housing in a misaligned position. (Diagram 2) (3) Radial internal clearance Regulations for radial internal clearance are the same as those for standard deep groove ball bearings. For standard fit and application conditions, a C3 clearance is used with this bearing. For more detailed information concerning this bearing and the availability of roller bearings contact NTN Engineering.
AC bearings have the same boundary dimensions as standard bearings with the addition of two O-rings imbedded in the outside circumference of the outer ring. (Diagram 3) This bearing has a steel housing, can withstand rotating outer ring loads, and is suitable for applications where a "tight fit" is not possible but the fear of creeping exists. With its capacity for axial load displacement, an AC bearing can also be installed as a floating side bearing to accommodate shaft fluctuations. Before installing the bearing into the housing, high viscosity oil (base oil viscosity, 100 mm2/s or more) or grease should be applied to the space between the two O-rings. This lubricant forms a thin oil layer inside the bearing which prevents contact between the outer ring and housing, lowers the coefficient of friction, and is still able to prevent creeping by utilizing the friction force of the O-rings.
3.3 TMB ball bearings TMB ball bearings have the same boundary dimensions as standard deep groove ball bearings, but have undergone a special heat treatment that considerably extends wear life. These bearings are especially effective in countering reduced wear life due to the effects of infiltration by dust and other foreign matter. ¡TMB ball bearings' special characteristics are identical to standard bearings at rated loads, but with a bearing characterization factor of a2 = 2.2 ¡TMB 62 series bearings can be used in place of standard 63 series bearings enabling lighter weight, more compact designs ¡Greater resistance to reduced wear life due to infiltration by dust and other foreign matter
For dimensional specifications, handling procedures, and other detailed information concerning AC bearings, contact NTN Engineering.
O-rings
For dimensional specifications and other detailed information about TMB ball bearings, contact NTN Engineering.
Diagram 3. AC bearing
B-7
●Deep Groove Ball Bearings
B r
r D
d
Open type
Shielded type (ZZ)
Non-contact sealed type (LLB, LLF)
Low torque sealed type (LLH)
Contact sealed type (LLU)
d 10∼20mm Boundary dimensions
Basic load ratings dynamic
mm d
D
B
static
dynamic
kN 1
rs min
Limiting speeds static
kgf
rNS min
Cr
Cor
Cr
Cor
rpm grease oil open type open type ZZ LLB Z LB LLH
Bearing numbers
LLU
open type
nonlow sealed contact torque contact type type type type
10
15 3 19 5 22 6 26 8 30 9 35 11
0.1 ― 0.3 ― 0.3 0.3 0.3 ― 0.6 0.5 0.6 0.5
0.855 1.83 2.7 4.55 5.10 8.20
0.435 0.925 1.27 1.96 2.39 3.50
87 187 275 465 520 835
44 94 129 200 244 355
10,000 32,000 30,000 29,000 25,000 23,000
12,000 ― ― 38,000 ― 24,000 36,000 ― 21,000 34,000 25,000 21,000 30,000 21,000 18,000 27,000 20,000 16,000
6700 6800 6900 6000 6200 6300
― ZZ ZZ ZZ ZZ ZZ
― ― ― LLB ― LLU LLB ― LLU LLB LLH LLU LLB LLH LLU LLB LLH LLU
12
18 4 21 5 24 6 28 7 28 8 32 10 37 12
0.2 ― 0.3 ― 0.3 0.3 0.3 ― 0.3 ― 0.6 0.5 1 0.5
0.930 1.92 2.89 5.10 5.10 6.10 9.70
0.530 1.04 1.46 2.39 2.39 2.75 4.20
95 195 295 520 520 620 990
54 106 149 244 244 280 425
8,300 29,000 27,000 26,000 26,000 22,000 20,000
9,500 ― ― 35,000 ― 20,000 32,000 ― 19,000 30,000 ― ― 30,000 21,000 18,000 26,000 20,000 16,000 24,000 19,000 15,000
6701 6801 6901 16001 6001 6201 6301
― ZZ ZZ ― ZZ ZZ ZZ
LLF ― ― LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU
15
21 4 24 5 28 7 32 8 32 9 35 11 42 13
0.2 0.3 0.3 0.3 0.3 0.6 1
― 0.940 ― 2.08 0.3 3.65 ― 5.60 0.3 5.60 0.5 7.75 0.5 11.4
0.585 96 1.26 212 2.00 375 2.83 570 2.83 570 3.60 790 5.45 1,170
59 128 204 289 289 365 555
6,600 26,000 24,000 22,000 22,000 19,000 17,000
7,600 ― ― 31,000 ― 17,000 28,000 ― 16,000 26,000 ― ― 26,000 18,000 15,000 23,000 18,000 15,000 21,000 15,000 12,000
6702 6802 6902 16002 6002 6202 6302
― ZZ ZZ ― ZZ ZZ ZZ
LLF ― ― LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU
17
23 26 30 35 35 40 47 62
4 5 7 8 10 12 14 17
0.2 0.3 0.3 0.3 0.3 0.6 1 1.1
― 1.00 0.660 102 67 ― 2.23 1.46 227 149 0.3 4.65 2.58 475 263 ― 6.80 3.35 695 345 0.3 6.80 3.35 695 345 0.5 9.60 4.60 980 465 0.5 13.5 6.55 1,380 665 ― 22.7 10.8 2,320 1,100
5,000 24,000 22,000 20,000 20,000 18,000 16,000 14,000
6,700 ― ― 28,000 ― 15,000 26,000 ― 14,000 24,000 ― ― 24,000 16,000 14,000 21,000 15,000 12,000 19,000 14,000 11,000 16,000 ― ―
6703 6803 6903 16003 6003 6203 6303 6403
― ZZ ZZ ― ZZ ZZ ZZ ―
LLF ― ― LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU ― ― ―
20
27 4 32 7 37 9 42 8 42 12 47 14 52 15
0.2 0.3 0.3 0.3 0.6 1 1.1
― 1.04 0.3 4.00 0.3 6.40 ― 7.90 0.5 9.40 0.5 12.8 0.5 15.9
5,000 21,000 19,000 18,000 18,000 16,000 14,000
5,700 ― ― 25,000 ― 13,000 23,000 ― 12,000 21,000 ― ― 21,000 13,000 11,000 18,000 12,000 10,000 17,000 12,000 10,000
6704 6804 6904 16004 6004 6204 6304
― ZZ ZZ ― ZZ ZZ ZZ
LLF ― ― LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU
0.730 106 2.47 410 3.70 650 4.50 810 5.05 955 6.65 1,310 7.90 1,620
74 252 375 455 515 680 805
1 Smallest allowable dimension for chamfer dimension r.
B-8
●Deep Groove Ball Bearings CY a
f
B rN
b rNa
r ro
r
D D1
ro
ra
d
Bearing numbers 2
da
With snap ring
Snap ring groove dimensions mm
2
snap ring
DX Da
D2
With snap ring groove
snap ring groove
CZ
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa When Por＜Fr use Por＝Fr
Snap ring dimensions mm
D1
a
b
ro
D2
f
max
max
min
max
max
max
min
da max
3
4
Abutment and fillet dimensions
Mass
mm
kg
Da
DX
CY
CZ
ras
r Nas
max
（approx.）
max
min
max
max
（approx.）
― ― N ―5 N N
― ― NR ―5 NR NR
― ― ― ― ― ― ― ― 20.8 1.05 0.8 0.2 ― ― ― ― 28.17 2.06 1.35 0.4 33.17 2.06 1.35 0.4
― ― 24.8 ― 34.7 39.7
― ― 0.7 ― 1.12 1.12
10.8 12 12 12 14 14
― 12.5 13 13.5 16 17
14.2 17 20 24 26 31
― ― 25.5 ― 35.5 40.5
― ― 1.5 ― 2.9 2.9
― ― 0.7 ― 1.2 1.2
0.1 0.3 0.3 0.3 0.6 0.6
― ― 0.3 ― 0.5 0.5
0.0015 0.005 0.009 0.019 0.032 0.053
― ― N ― ―5 N N
― ― NR ― ―5 NR NR
― ― 22.8 ― ― 30.15 34.77
― ― 26.8 ― ― 36.7 41.3
― ― 0.7 ― ― 1.12 1.12
13.6 14 14 14 14 16 17
13.8 14.5 15 ― 16 17 18.5
16.4 19 22 26 26 28 32
― ― 27.5 ― ― 37.5 42
― ― 1.5 ― ― 2.9 2.9
― ― 0.7 ― ― 1.2 1.2
0.2 0.3 0.3 0.3 0.3 0.6 1
― ― 0.3 ― ― 0.5 0.5
0.002 0.006 0.011 0.019 0.021 0.037 0.06
― ― N ― N N N
― ― NR ― NR NR NR
― ― ― ― ― ― ― ― 26.7 1.3 0.95 0.25 ― ― ― ― 30.15 2.06 1.35 0.4 33.17 2.06 1.35 0.4 39.75 2.06 1.35 0.4
― ― 30.8 ― 36.7 39.7 46.3
― ― 0.85 ― 1.12 1.12 1.12
16.6 17 17 17 17 19 20
16.8 17.5 17.5 ― 19 20 23
19.4 22 26 30 30 31 37
― ― 31.5 ― 37.5 40.5 47
― ― 1.9 ― 2.9 2.9 2.9
― ― 0.9 ― 1.2 1.2 1.2
0.2 0.3 0.3 0.3 0.3 0.6 1
― ― 0.3 ― 0.3 0.5 0.5
0.0025 0.007 0.016 0.025 0.03 0.045 0.082
― ― N ― N N N ―
― ― NR ― NR NR NR ―
― ― 28.7 ― 33.17 38.1 44.6 ―
― ― 0.25 ― 0.4 0.4 0.4 ―
― ― 32.8 ― 39.7 44.6 52.7 ―
― ― 0.85 ― 1.12 1.12 1.12 ―
18.6 19 19 19 19 21 22 23.5
18.8 19.5 20 ― 21 23 25 ―
21.4 24 28 33 33 36 42 55.5
― ― 33.5 ― 40.5 45.5 53.5 ―
― ― 1.9 ― 2.9 2.9 3.3 ―
― ― 0.9 ― 1.2 1.2 1.2 ―
0.2 0.3 0.3 0.3 0.3 0.6 1 1
― ― 0.3 ― 0.3 0.5 0.5 ―
0.0025 0.008 0.018 0.032 0.039 0.066 0.115 0.27
― N N ― N N N
― NR NR ― NR NR NR
― ― ― ― 30.7 1.3 0.95 0.25 35.7 1.7 0.95 0.25 ― ― ― ― 39.75 2.06 1.35 0.4 44.6 2.46 1.35 0.4 49.73 2.46 1.35 0.4
― 34.8 39.8 ― 46.3 52.7 57.9
― 0.85 0.85 ― 1.12 1.12 1.12
21.6 22 22 22 24 25 26.5
22.3 22.5 24 ― 26 28 28.5
25.4 30 35 40 38 42 45.5
― 35.5 40.5 ― 47 53.5 58.5
― 1.9 2.3 ― 2.9 3.3 3.3
― 0.9 0.9 ― 1.2 1.2 1.2
0.2 0.3 0.3 0.3 0.6 1 1
― 0.3 0.3 ― 0.5 0.5 0.5
0.0045 0.019 0.036 0.051 0.069 0.106 0.144
― ― 1.05 ― ― 2.06 2.06
― ― 1.3 ― 2.06 2.06 2.46 ―
― ― 0.8 ― ― 1.35 1.35
― ― 0.95 ― 1.35 1.35 1.35 ―
― ― 0.2 ― ― 0.4 0.4
2 Sealed and shielded bearings are also available. 3 This dimension applies to sealed and shielded bearings. 4 Does not include bearings with snap rings. 5 See page B-38.
B-9
●Deep Groove Ball Bearings
B r
r D
d
Open type
Shielded type (ZZ)
Non-contact sealed type (LLB, LLF)
Low torque sealed type (LLH)
Contact sealed type (LLU)
d 20∼35mm Boundary dimensions
Basic load ratings dynamic
mm d
1
20
72 19
1.1
22
44 12 50 14 56 16
0.6 0.5 9.40 1 0.5 12.9 1.1 0.5 18.4
25
32 37 42 47 47 52 62 80
0.2 0.3 0.3 0.3 0.6 1 1.1 1.5
28
52 12 58 16 68 18
0.6 0.5 12.5 1 0.5 17.9 1.1 0.5 26.7
30
37 42 47 55 55 62 72 90
0.2 0.3 0.3 0.3 1 1 1.1 1.5
32
58 13 65 17 75 20 47 55 62 62 72 80 100
4 7 9 9 13 16 19 23
7 10 9 14 17 21 25
Limiting speeds static
kgf
rNS
rs min
4 7 9 8 12 15 17 21
dynamic
kN
B
35
D
static
min
Cr
― 28.5
― 0.3 0.3 ― 0.5 0.5 0.5 ―
― 0.3 0.3 ― 0.5 0.5 0.5 ―
Cor
13.9 5.05 6.80 9.25
1.10 0.840 4.30 2.95 7.05 4.55 8.35 5.10 10.1 5.85 14.0 7.85 21.2 10.9 34.5 17.5 7.40 9.75 14.0
1.14 0.950 4.70 3.65 7.25 5.00 11.2 7.35 13.2 8.3 19.5 11.3 26.7 15.0 43.5 23.9
Cr
Cor
rpm grease oil open type open type ZZ LLB Z LB LLH
―
Bearing numbers
LLU
―
2,900 1,420
12,000 14,000
955 1,320 1,880
17,000 20,000 13,000 10,000 14,000 17,000 12,000 9,700 13,000 15,000 11,000 9,200
515 690 945
4,600 ― ― 21,000 ― 10,000 19,000 ― 9,800 18,000 ― ― 18,000 11,000 9,400 15,000 11,000 8,900 14,000 9,700 8,100 12,000 ― ―
open type
6404
nonlow sealed contact torque contact type type type type
―
―
―
―
60/22 ZZ 62/22 ZZ 63/22 ZZ
LLB LLH LLU LLB LLH LLU LLB LLH LLU
― ZZ ZZ ― ZZ ZZ ZZ ―
LLF ― ― LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU ― ― ―
60/28 ZZ 62/28 ZZ 63/28 ZZ
LLB LLH LLU LLB LLH LLU LLB LLH LLU
112 86 435 300 715 460 855 520 1,030 595 1,430 800 2,160 1,110 3,550 1,780
4,000 18,000 16,000 15,000 15,000 13,000 12,000 10,000
6705 6805 6905 16005 6005 6205 6305 6405
1,270 755 1,830 995 2,730 1,430
14,000 16,000 10,000 12,000 14,000 9,700 11,000 13,000 8,900
8,400 8,100 7,400
117 97 480 370 740 510 1,150 750 1,350 845 1,980 1,150 2,720 1,530 4,400 2,440
3,300 15,000 14,000 13,000 13,000 11,000 10,000 8,800
3,800 18,000 17,000 15,000 15,000 13,000 12,000 10,000
― ― ― ― 9,200 8,800 7,900 ―
― 8.800 8,400 ― 7,700 7,300 6,600 ―
6706 6806 6906 16006 6006 6206 6306 6406
― ZZ ZZ ― ZZ ZZ ZZ ―
LLF ― ― LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU ― ― ―
1 0.5 11.8 1 0.5 20.7 1.1 0.5 29.8
8.05 11.6 16.9
1,200 820 2,110 1,190 3,050 1,730
12,000 15,000 11,000 12,000 9,500 11,000
8,700 8,400 7,700
7,200 7,100 6,500
60/32 62/32 63/32
ZZ ZZ ZZ
LLB LLH LLU LLB LLH LLU LLB LLH LLU
0.3 0.6 0.3 1 1.1 1.5 1.5
4.05 6.85 8.20 10.3 15.3 19.1 31.0
500 975 1,190 1,630 2,620 3,400 5,600
13,000 12,000 12,000 12,000 9,800 8,800 7,800
― ― ― 8,200 7,600 7,300 ―
7,600 7,100 ― 6,800 6,300 6,000 ―
6807 6907 16007 6007 6207 6307 6407
ZZ ZZ ― ZZ ZZ ZZ ―
LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU ― ― ―
0.3 0.5 ― 0.5 0.5 0.5 ―
4.90 9.55 11.7 16.0 25.7 33.5 55.0
410 695 835 1,050 1,560 1,950 3,150
1 Smallest allowable dimension for chamfer dimension r.
B-10
16,000 15,000 14,000 14,000 11,000 10,000 9,100
●Deep Groove Ball Bearings CY a
f
B
b
rN
rNa
r ro
r
D D1
ro
ra
d
Bearing numbers 2
snap ring
―
―
―
N N N
NR NR NR
41.75 47.6 53.6
― N N ― N N N ―
― NR NR ― NR NR NR ―
N N N
D1
a
b
ro
D2
f
max
min
max
max
max
2.06 2.46 2.46
―
―
3
Mass
mm
kg
Da
DX
CY
CZ
ras
r Nas
max
（approx.）
max
min
max
max
min
max
26.5
―
65.5
―
―
―
1
―
（approx.）
0.4
1.12 1.12 1.12
26 27 28.5
26.5 29.5 31
40 45 49.5
49 56.5 62.5
2.9 3.3 3.3
1.2 1.2 1.2
0.6 1 1
0.5 0.5 0.5
0.074 0.117 0.176
― ― ― ― 35.7 1.3 0.95 0.25 40.7 1.7 0.95 0.25 ― ― ― ― 44.6 2.06 1.35 0.4 49.73 2.46 1.35 0.4 59.61 3.28 1.9 0.6 ― ― ― ―
― 39.8 44.8 ― 52.7 57.9 67.7 ―
― 0.85 0.85 ― 1.12 1.12 1.7 ―
26.6 27 27 27 29 30 31.5 33
27.3 28 29 ― 30.5 32 35 ―
30.4 35 40 45.0 43 47 55.5 72
― 40.5 45.5 ― 53.5 58.5 68.5 ―
― 1.9 2.3 ― 2.9 3.3 4.6 ―
― 0.9 0.9 ― 1.2 1.2 1.7 ―
0.2 0.3 0.3 0.3 0.6 1 1 1.5
― 0.3 0.3 ― 0.5 0.5 0.5 ―
0.005 0.022 0.042 0.06 0.08 0.128 0.232 0.53
NR NR NR
49.73 55.6 64.82
57.9 63.7 74.6
1.12 1.12 1.7
32 33 34.5
34 35.5 38.5
48 53 61.5
58.5 64.5 76
2.9 3.3 4.6
1.2 1.2 1.7
0.6 1 1
0.5 0.5 0.5
0.098 0.171 0.284
― N N ― N N N ―
― NR NR ― NR NR NR ―
― ― ― ― 40.7 1.3 0.95 0.25 45.7 1.7 0.95 0.25 ― ― ― ― 52.6 2.08 1.35 0.4 59.61 3.28 1.9 0.6 68.81 3.28 1.9 0.6 ― ― ― ―
― 44.8 49.8 ― 60.7 67.7 78.6 ―
― 0.85 0.85 ― 1.12 1.7 1.7 ―
31.6 32 32 32 35 35 36.5 38
32.3 33 34 ― 37 39 43 ―
35.4 40 45 53 50 57 65.5 82
― 45.5 50.5 ― 61.5 68.5 80 ―
― 1.9 2.3 ― 2.9 4.6 4.6 ―
― 0.9 0.9 ― 1.2 1.7 1.7 ―
0.2 0.3 0.3 0.3 1 1 1 1.5
― 0.3 0.3 ― 0.5 0.5 0.5 ―
0.006 0.026 0.048 0.091 0.116 0.199 0.36 0.735
N N N
NR NR NR
55.6 62.6 71.83
63.7 70.7 81.6
1.12 1.7 1.7
37 37 38.5
39 40 43.5
53 60 68.5
64.5 71.5 83
2.9 4.6 4.6
1.2 1.7 1.7
0.5 0.5 0.5
0.129 0.226 0.382
N N ― N N N
NR NR ― NR NR NR ―
45.7 1.3 0.95 0.25 53.7 1.7 0.95 0.25 ― ― ― ― 59.61 2.08 1.9 0.6 68.81 3.28 1.9 0.6 76.81 3.28 1.9 0.6 ― ― ― ―
49.8 57.8 ― 67.7 78.6 86.6 ―
0.85 0.85 ― 1.7 1.7 1.7 ―
37 39 37 40 41.5 43 43
38 40 ― 42 45 47 ―
45 51 60 57 65.5 72 92
50.5 58.5 ― 68.5 80 88 ―
1.9 2.3 ― 3.4 4.6 4.6 ―
0.9 0.9 ― 1.7 1.7 1.7 ―
0.3 0.5 ― 0.5 0.5 0.5 ―
0.029 0.074 0.11 0.155 0.288 0.457 0.952
2.08 3.28 3.28
1.35 1.35 1.9
1.35 1.9 1.9
0.4 0.4 0.4
―
da
4
Abutment and fillet dimensions
48.3 55.7 61.7
2.06 2.46 3.28
1.35 1.35 1.35
―
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa When Por＜Fr use Por＝Fr
Snap ring dimensions mm
max
―
da
With snap ring
Snap ring groove dimensions mm
snap ring groove
DX Da
D2
With snap ring groove
2
CZ
0.4 0.4 0.6
0.4 0.6 0.6
1 1 1 0.3 0.6 0.3 1 1 1.5 1.5
2 Sealed and shielded bearings are also available. 3 This dimension applies to sealed and shielded bearings. 4 Does not include bearings with snap rings.
B-11
●Deep Groove Ball Bearings
B r
r D
d
Shielded type (ZZ)
Open type
Non-contact sealed type (LLB)
Low torque sealed type (LLH)
Contact sealed type （LLU）
d 40∼60mm Boundary dimensions
Basic load ratings dynamic
mm
static
dynamic
kN 1
Limiting speeds static
kgf
rNS Cor
Cr
Cor
LLU
open type
nonlow sealed contact torque contact type type type type
d
D
B
rs min
40
52 62 68 68 80 90 110
7 12 9 15 18 23 27
0.3 0.6 0.3 1 1.1 1.5 2
0.3 0.5 ― 0.5 0.5 0.5 ―
5.10 12.2 12.6 16.8 29.1 40.5 63.5
4.40 8.90 9.65 11.5 17.8 24.0 36.5
520 1,240 1,290 1,710 2,970 4,150 6,500
445 910 985 1,170 1,820 2,450 3,750
12,000 11,000 10,000 10,000 8,700 7,800 7,000
14,000 13,000 12,000 12,000 10,000 9,200 8,200
― ― ― 7,300 6,700 6,400 ―
6,700 6,300 ― 6,100 5,600 5,300 ―
6808 6908 16008 6008 6208 6308 6408
ZZ ZZ ― ZZ ZZ ZZ ―
LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU ― ― ―
45
58 68 75 75 85 100 120
7 12 10 16 19 25 29
0.3 0.6 0.6 1 1.1 1.5 2
0.3 0.5 ― 0.5 0.5 0.5 ―
5.35 13.1 12.9 21.0 32.5 53.0 77.0
4.95 10.4 10.5 15.1 20.4 32.0 45.0
550 1,330 1,320 2,140 3,350 5,400 7,850
500 1,060 1,070 1,540 2,080 3,250 4,600
11,000 9,800 9,200 9,200 7,800 7,000 6,300
12,000 12,000 11,000 11,000 9,200 8,200 7,400
― ― ― 6,500 6,200 5,600 ―
5,900 5,600 ― 5,400 5,200 4,700 ―
6809 6909 16009 6009 6209 6309 6409
ZZ ZZ ― ZZ ZZ ZZ ―
LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU ― ― ―
50
65 72 80 80 90 110 130
7 12 10 16 20 27 31
0.3 0.6 0.6 1 1.1 2 2.1
0.3 0.5 ― 0.5 0.5 0.5 ―
6.60 13.4 13.2 21.8 35.0 62.0 83.0
6.10 11.2 11.3 16.6 23.2 38.5 49.5
670 1,370 1,350 2,230 3,600 6,300 8,450
620 1,140 1,150 1,690 2,370 3,900 5,050
9,600 11,000 8,900 11,000 8,400 9,800 8,400 9,800 7,100 8,300 6,400 7,500 5,700 6,700
― ― ― 6,000 5,700 5,000 ―
5,300 5,100 ― 5,000 4,700 4,200 ―
6810 6910 16010 6010 6210 6310 6410
ZZ ZZ ― ZZ ZZ ZZ ―
LLB ― LLU LLB ― LLU ― ― ― LLB LLH LLU LLB LLH LLU LLB LLH LLU ― ― ―
55
72 80 90 90 100 120 140
9 13 11 18 21 29 33
0.3 1 0.6 1.1 1.5 2 2.1
0.3 0.5 ― 0.5 0.5 0.5 ―
8.80 16.0 18.6 28.3 43.5 71.5 89.0
8.10 13.3 15.3 21.2 29.2 45.0 54.0
900 1,630 1,900 2,880 4,450 7,300 9,050
825 1,350 1,560 2,170 2,980 4,600 5,500
8,700 10,000 8,200 9,600 7,700 9,000 7,700 9,000 6,400 7,600 5,800 6,800 5,200 6,100
― ― ― ― ― ― ―
4,800 4,600 ― 4,500 4,300 3,900 ―
6811 6911 16011 6011 6211 6311 6411
ZZ ZZ ― ZZ ZZ ZZ ―
LLB LLB ― LLB LLB LLB ―
― ― ― ― ― ― ―
LLU LLU ― LLU LLU LLU ―
60
78 85 95 95 110 130 150
10 13 11 18 22 31 35
0.3 1 0.6 1.1 1.5 2.1 2.1
0.3 11.5 0.5 16.4 ― 20.0 0.5 29.5 0.5 52.5 0.5 82.0 ― 102
10.6 14.3 17.5 23.2 36.0 52.0 64.5
1,170 1,670 2,040 3,000 5,350 8,350 10,400
1,080 1,450 1,780 2,370 3,700 5,300 6,550
8,000 7,600 7,000 7,000 6,000 5,400 4,800
― ― ― ― ― ― ―
4,400 4,300 ― 4,100 3,800 3,600 ―
6812 6912 16012 6012 6212 6312 6412
ZZ ZZ ― ZZ ZZ ZZ ―
LLB LLB ― LLB LLB LLB ―
― ― ― ― ― ― ―
LLU LLU ― LLU LLU LLU ―
min
Cr
rpm grease oil open type open type ZZ LLB Z LB LLH
Bearing numbers
1 Smallest allowable dimension for chamfer dimension r.
B-12
9,400 8,900 8,300 8,300 7,000 6,300 5,700
●Deep Groove Ball Bearings CY a
f
B rN
b rNa
r ro
r
D D1
ro
ra
d
Bearing numbers snap ring
N N ― N N N ―
NR NR ― NR NR NR ―
N N ― N N N ―
NR NR ― NR NR NR ―
da
With snap ring
Snap ring groove dimensions mm
2
snap ring groove
DX Da
D2
With snap ring groove
2
CZ
When Por＜Fr use Por＝Fr
Snap ring dimensions mm
D1
a
b
ro
D2
f
max
max
min
max
max
max
min
50.7 1.3 0.95 0.25 60.7 1.7 0.95 0.25 ― ― ― ― 64.82 2.49 1.9 0.6 76.81 3.28 1.9 0.6 86.79 3.28 2.7 0.6 ― ― ― ―
54.8 64.8 ― 74.6 86.6 96.5 ―
0.85 0.85 ― 1.7 1.7 2.46 ―
42 44 42 45 46.5 48 49
43 45 ― 47 51 54 ―
56.7 1.3 0.95 0.25 66.7 1.7 0.95 0.25 ― ― ― ― 71.83 2.49 1.9 0.6 81.81 3.28 1.9 0.6 96.8 3.28 2.7 0.6 ― ― ― ―
60.8 70.8 ― 81.6 91.6 106.5 ―
0.85 0.85 ― 1.7 1.7 2.46 ―
N N ― N N N ―
NR 63.7 1.3 0.95 0.25 NR 70.7 1.7 0.95 0.25 ― ― ― ― ― NR 76.81 2.49 1.9 0.6 NR 86.79 3.28 2.7 0.6 NR 106.81 3.28 2.7 0.6 ― ― ― ― ―
67.8 74.8 ― 86.6 96.5 116.6 ―
N N ― N N N ―
NR 70.7 1.7 0.95 0.25 NR 77.9 2.1 1.3 0.4 ― ― ― ― ― NR 86.79 2.87 2.7 0.6 NR 96.8 3.28 2.7 0.6 NR 115.21 4.06 3.1 0.6 ― ― ― ― ―
N N ― N N N ―
NR 76.2 1.7 1.3 NR 82.9 2.1 1.3 ― ― ― ― NR 91.82 2.87 2.7 NR 106.81 3.28 2.7 NR 125.22 4.06 3.1 ― ― ― ―
0.4 0.4 ― 0.6 0.6 0.6 ―
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa
da
4
Abutment and fillet dimensions
Mass
mm
kg
Da
DX
CY
CZ
ras
r Nas
max
（approx.）
max
min
max
max
55.5 65.5 ― 76 88 98 ―
1.9 2.3 ― 3.8 4.6 5.4 ―
0.9 0.9 ― 1.7 1.7 2.5 ―
0.3 0.6 0.3 1 1 1.5 2.0
0.3 0.5 ― 0.5 0.5 0.5 ―
0.033 0.11 0.125 0.19 0.366 0.63 1.23
47 49 49 50 51.5 53 54
48 56 61.5 51 64 72 ― 71 ― 52.5 70 83 55.5 78.5 93 61.5 92 108 ― 111 ―
1.9 2.3 ― 3.8 4.6 5.4 ―
0.9 0.9 ― 1.7 1.7 2.5 ―
0.3 0.6 0.6 1 1 1.5 2
0.3 0.5 ― 0.5 0.5 0.5 ―
0.04 0.128 0.171 0.237 0.398 0.814 1.53
0.85 0.85 ― 1.7 2.46 2.46 ―
52 54 54 55 56.5 59 61
54 63 68.5 55.5 68 76 ― 76 ― 57.5 75 88 60 83.5 98 68.5 101 118 ― 119 ―
1.9 2.3 ― 3.8 5.4 5.4 ―
0.9 0.9 ― 1.7 2.5 2.5 ―
0.3 0.6 0.6 1 1 2 2
0.3 0.5 ― 0.5 0.5 0.5 ―
0.052 0.132 0.18 0.261 0.454 1.07 1.88
74.8 84.4 ― 96.5 106.5 129.7 ―
0.85 1.12 ― 2.46 2.46 2.82 ―
57 60 59 61.5 63 64 66
59 70 76 61.5 75 86 ― 86 ― 64 83.5 98 67 92 108 74 111 131.5 ― 129 ―
2.3 2.9 ― 5 5.4 6.5 ―
0.9 1.2 ― 2.5 2.5 2.9 ―
0.3 1 0.6 1 1.5 2 2
0.3 0.5 ― 0.5 0.5 0.5 ―
0.083 0.18 0.258 0.388 0.601 1.37 2.29
82.7 89.4 ― 101.6 116.6 139.7 ―
1.12 1.12 ― 2.46 2.46 2.82 ―
62 65 64 66.5 68 71 71
64.5 76 84 66.5 80 91 ― 91 ― 69 88.5 103 75 102 118 80.5 119 141.5 ― 139 ―
2.5 2.9 ― 5 5.4 6.5 ―
1.2 1.2 ― 2.5 2.5 2.9 ―
0.3 1 0.6 1 1.5 2 2
0.3 0.5 ― 0.5 0.5 0.5 ―
0.106 0.193 0.283 0.414 0.783 1.73 2.77
max
3
50 58 66 63 73.5 82 101
（approx.）
2 Sealed and shielded bearings are also available. 3 This dimension applies to sealed and shielded bearings. 4 Does not include bearings with snap rings.
B-13
●Deep Groove Ball Bearings
B r
r D
d
Shielded type (ZZ)
Open type
Non-contact sealed type (LLB)
Contact sealed type （LLU）
d 65∼85mm Boundary dimensions
Basic load ratings dynamic
mm
dynamic
kN
Limiting speeds static
rpm oil open type Z LB
LLU
open type
nonsealed contact type type
Cr
Cor
Cr
Cor
0.5 0.5 ― 0.5 0.5 0.5 ―
11.6 17.4 20.5 30.5 57.5 92.5 111
11.0 16.1 18.7 25.2 40.0 60.0 72.5
1,180 1,770 2,090 3,100 5,850 9,450 11,300
1,120 1,640 1,910 2,570 4,100 6,100 7,400
7,400 7,000 6,500 6,500 5,500 4,900 4,400
8,700 8,200 7,700 7,700 6,500 5,800 5,200
4,100 4,000 ― 3,900 3,600 3,300 ―
6813 6913 16013 6013 6213 6313 6413
ZZ ZZ ― ZZ ZZ ZZ ―
LLB LLB ― LLB LLB LLB ―
LLU LLU ― LLU LLU LLU ―
0.6 1 0.6 1.1 1.5 2.1 3
0.5 0.5 ― 0.5 0.5 0.5 ―
12.1 23.7 24.4 38.0 62.0 104 128
11.9 21.2 22.6 31.0 44.0 68.0 89.5
1,230 2,420 2,480 3,900 6,350 10,600 13,100
1,220 2,160 2,300 3,150 4,500 6,950 9,100
6,900 6,500 6,100 6,100 5,100 4,600 4,100
8,100 7,700 7,100 7,100 6,000 5,400 4,800
3,800 3,700 ― 3,600 3,400 3,100 ―
6814 6914 16014 6014 6214 6314 6414
ZZ ZZ ― ZZ ZZ ZZ ―
LLB LLB ― LLB LLB LLB ―
LLU LLU ― LLU LLU LLU ―
10 16 13 20 25 37 45
0.6 1 0.6 1.1 1.5 2.1 3
0.5 0.5 ― 0.5 0.5 0.5 ―
12.5 24.4 25.0 39.5 66.0 113 138
12.9 22.6 24.0 33.5 49.5 77.0 99.0
1,280 1,310 2,480 2,300 2,540 2,450 4,050 3,400 6,750 5,050 11,600 7,850 14,000 10,100
6,400 6,100 5,700 5,700 4,800 4,300 3,800
7,600 7,200 6,700 6,700 5,600 5,000 4,500
3,600 3,500 ― 3,300 3,200 2,900 ―
6815 6915 16015 6015 6215 6315 6415
ZZ ZZ ― ZZ ZZ ZZ ―
LLB LLB ― LLB LLB LLB ―
LLU LLU ― LLU LLU LLU ―
100 110 125 125 140 170 200
10 16 14 22 26 39 48
0.6 1 0.6 1.1 2 2.1 3
0.5 0.5 ― 0.5 0.5 0.5 ―
12.7 24.9 25.4 47.5 72.5 123 164
13.3 24.0 25.1 40.0 53.0 86.5 125
1,290 1,360 2,540 2,450 2,590 2,560 4,850 4,050 7,400 5,400 12,500 8,850 16,700 12,800
6,000 5,700 5,300 5,300 4,500 4,000 3,600
7,100 6,700 6,200 6,200 5,300 4,700 4,200
3,400 3,200 ― 3,100 3,000 2,700 ―
6816 6916 16016 6016 6216 6316 6416
ZZ ZZ ― ZZ ZZ ZZ ―
LLB LLB ― LLB LLB LLB ―
LLU LLU ― LLU LLU LLU ―
110 120 130 130 150 180
13 18 14 22 28 41
1 1.1 0.6 1.1 2 3
0.5 0.5 ― 0.5 0.5 0.5
18.7 32.0 25.9 49.5 83.5 133
19.0 29.6 26.2 43.0 64.0 97.0
1,910 3,250 2,640 5,050 8,500 13,500
5,700 5,400 5,000 5,000 4,200 3,800
6,700 6,300 5,900 5,900 5,000 4,500
3,100 3,000 ― 2,900 2,800 2,600
6817 6917 16017 6017 6217 6317
ZZ ZZ ― ZZ ZZ ZZ
LLB LLB ― LLB LLB LLB
LLU LLU ― LLU LLU LLU
1
D
B
rs min
65
85 90 100 100 120 140 160
10 13 11 18 23 33 37
0.6 1 0.6 1.1 1.5 2.1 2.1
70
90 100 110 110 125 150 180
10 16 13 20 24 35 42
75
95 105 115 115 130 160 190
80
kgf
Bearing numbers
grease open type ZZ LLB
d
85
static
rNS min
1,940 3,000 2,670 4,400 6,500 9,850
1 Smallest allowable dimension for chamfer dimension r.
B-14
contact type
●Deep Groove Ball Bearings CY a
f
B rN
b rNa
r ro
r
D D1
ro
ra
d
Bearing numbers 2
da
With snap ring
Snap ring groove dimensions mm
2
snap ring
DX Da
D2
With snap ring groove
snap ring groove
CZ
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa When Por＜Fr use Por＝Fr
Snap ring dimensions mm
D1
a
b
ro
D2
f
max
max
min
max
max
max
min
da max
3
4
Abutment and fillet dimensions
Mass
mm
kg
Da
DX
CY
CZ
ras
r Nas
max
（approx.）
max
min
max
max
（approx.）
N N ― N N N ―
NR 82.9 1.7 1.3 NR 87.9 2.1 1.3 ― ― ― ― NR 96.8 2.87 2.7 NR 115.21 4.06 3.1 NR 135.23 4.9 3.1 ― ― ― ―
0.4 0.4 ― 0.6 0.6 0.6 ―
89.4 94.4 ― 106.5 129.7 149.7 ―
1.12 1.12 ― 2.46 2.82 2.82 ―
69 70 69 71.5 73 76 76
70 81 91 71.5 85 96 ― 96 ― 74 93.5 108 80.5 112 131.5 86 129 152 ― 149 ―
2.5 2.9 ― 5 6.5 7.3 ―
1.2 1.2 ― 2.5 2.9 2.9 ―
0.6 1 0.6 1 1.5 2 2
0.5 0.5 ― 0.5 0.5 0.5 ―
0.128 0.206 0.307 0.421 0.99 2.08 3.3
N N ― N N N ―
NR 87.9 1.7 1.3 NR 97.9 2.5 1.3 ― ― ― ― NR 106.81 2.87 2.7 NR 120.22 4.06 3.1 NR 145.24 4.9 3.1 ― ― ― ―
0.4 0.4 ― 0.6 0.6 0.6 ―
94.4 104.4 ― 116.6 134.7 159.7 ―
1.12 1.12 ― 2.46 2.82 2.82 ―
74 75 74 76.5 78 81 83
75.5 77.5 ― 80.5 85 92.5 ―
86 95 106 103.5 117 139 167
96 106 ― 118 136.5 162 ―
2.5 3.3 ― 5 6.5 7.3 ―
1.2 1.2 ― 2.5 2.9 2.9 ―
0.6 1 0.6 1 1.5 2 2.5
0.5 0.5 ― 0.5 0.5 0.5 ―
0.137 0.334 0.441 0.604 1.07 2.52 4.83
N N ― N N N ―
NR NR ― NR NR NR ―
92.9 1.7 1.3 102.6 2.5 1.3 ― ― ― 111.81 2.87 2.7 125.22 4.06 3.1 155.22 4.9 3.1 ― ― ―
0.4 0.4 ― 0.6 0.6 0.6 ―
99.4 110.7 ― 121.6 139.7 169.7 ―
1.12 1.12 ― 2.46 2.82 2.82 ―
79 80 79 81.5 83 86 88
80 82.5 ― 85.5 90.5 99 ―
91 100 111 108.5 122 149 177
101 112 ― 123 141.5 172 ―
2.5 3.3 ― 5 6.5 7.3 ―
1.2 1.2 ― 2.5 2.9 2.9 ―
0.6 1 0.6 1 1.5 2 2.5
0.5 0.5 ― 0.5 0.5 0.5 ―
0.145 0.353 0.464 0.649 1.18 3.02 5.72
N N ― N N N ―
NR NR ― NR NR NR ―
97.9 1.7 1.3 107.6 2.5 1.3 ― ― ― 120.22 2.87 3.1 135.23 4.9 3.1 163.65 5.69 3.5 ― ― ―
0.4 0.4 ― 0.6 0.6 0.6 ―
104.4 115.7 ― 134.7 149.7 182.9 ―
1.12 1.12 ― 2.82 2.82 3.1 ―
84 85 85 88 84 ― 86.5 91.5 89 95.5 91 105 93 ―
96 105 121 118.5 131 159 187
106 117 ― 136.5 152 185 ―
2.5 3.3 ― 5.3 7.3 8.4 ―
1.2 1.2 ― 2.9 2.9 3.1 ―
0.6 1 0.6 1 2 2 2.5
0.5 0.5 ― 0.5 0.5 0.5 ―
0.154 0.373 0.597 0.854 1.4 3.59 6.76
N N ― N N N
NR NR ― NR NR NR
107.6 2.1 1.3 117.6 3.3 1.3 ― ― ― 125.22 2.87 3.1 145.24 4.9 3.1 173.66 5.69 3.5
0.4 0.4 ― 0.6 0.6 0.6
115.7 125.7 ― 139.7 159.7 192.9
1.12 1.12 ― 2.82 2.82 3.1
90 91 91.5 94 89 ― 91.5 97 94 103 98 112
105 113.5 126 123.5 141 167
117 127 ― 141.5 162 195
2.9 4.1 ― 5.3 7.3 8.4
1.2 1.2 ― 2.9 2.9 3.1
1 1 0.6 1 2 2.5
0.5 0.5 ― 0.5 0.5 0.5
0.27 0.536 0.626 0.89 1.79 4.23
2 Sealed and shielded bearings are also available. 3 This dimension applies to sealed and shielded bearings. 4 Does not include bearings with snap rings.
B-15
●Deep Groove Ball Bearings CY a
f
B rN
b rNa
r ro
r
D D1
ro
ra
d
Bearing numbers
da
With snap ring
Snap ring groove dimensions mm
2
DX Da
D2
With snap ring groove
2
CZ
When Por＜Fr use Por＝Fr
Snap ring dimensions mm
Mass
mm
kg
snap ring
N N ― N N N
NR NR ― NR NR NR
112.6 2.1 1.3 122.6 3.3 1.3 ― ― ― 135.23 3.71 3.1 155.22 4.9 3.1 183.64 5.69 3.5
0.4 0.4 ― 0.6 0.6 0.6
120.7 130.7 ― 149.7 169.7 202.9
1.12 1.12 ― 2.82 2.82 3.1
95 96 96.5 99 95 ― 98 102 99 109 103 118
110 118.5 135 132 151 177
N N ― N N N
NR NR ― NR NR NR
117.6 2.1 1.3 127.6 3.3 1.3 ― ― ― 140.23 3.71 3.1 163.65 5.69 3.5 193.65 5.69 3.5
0.4 0.4 ― 0.6 0.6 0.6
125.7 135.7 ― 154.7 182.9 212.9
1.12 1.12 ― 2.82 3.1 3.1
100 101.5 100 103 106 108
101 104 ― 109 116 125
N N ― N N ―
NR NR ― NR NR ―
122.6 2.1 1.3 137.6 3.3 1.9 ― ― ― 145.24 3.71 3.1 173.66 5.69 3.5 ― ― ―
0.4 0.6 ― 0.6 0.6 ―
130.7 145.7 ― 159.7 192.9 ―
1.12 1.7 ― 2.82 3.1 ―
105 106.5 105 108 111 113
N N ― N N ―
NR NR ― NR NR ―
127.6 2.1 1.3 142.6 3.3 1.9 ― ― ― 155.22 3.71 3.1 183.64 5.69 3.5 ― ― ―
0.4 0.6 ― 0.6 0.6 ―
135.7 150.7 ― 169.7 202.9 ―
1.12 1.7 ― 2.82 3.1 ―
N N ― N N ―
NR NR ― NR NR ―
137.6 2.5 1.9 147.6 3.3 1.9 ― ― ― 163.65 3.71 3.5 193.65 5.69 3.5 ― ― ―
0.6 0.6 ― 0.6 0.6 ―
145.7 155.7 ― 182.9 212.9 ―
N N ― N
NR 147.6 2.5 1.9 NR 161.8 3.7 1.9 ― ― ― ― NR 173.66 3.71 3.5
0.6 0.6 ― 0.6
155.7 171.5 ― 192.9
D1
a
b
ro
D2
f
max
min
max
max
max
da
4
Abutment and fillet dimensions
snap ring groove
max
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa
Da
DX
CY
CZ
ras
r Nas
max
（approx.）
max
min
max
max
122 132 ― 152 172 205
2.9 4.1 ― 6.1 7.3 8.4
1.2 1.2 ― 2.9 2.9 3.1
1 1 1 1.5 2 2.5
0.5 0.5 ― 0.5 0.5 0.5
0.285 0.554 0.848 1.02 2.15 4.91
115 123.5 140 137 159 187
127 137 ― 157 185 215
2.9 4.1 ― 6.1 8.4 8.4
1.2 1.2 ― 2.9 3.1 3.1
1 1 1 1.5 2 2.5
0.5 0.5 ― 0.5 0.5 0.5
0.3 0.579 0.885 1.08 2.62 5.67
106 110 ― 110 122 133
120 133.5 145 142 169 202
132 147 ― 162 195 ―
2.9 4.7 ― 6.1 8.4 ―
1.2 1.7 ― 2.9 3.1 ―
1 1 1 1.5 2 2.5
0.5 0.5 ― 0.5 0.5 ―
0.313 0.785 0.91 1.15 3.14 7
110 111.5 110 114 116 118
― 115 ― 119 125 134
125 138.5 155 151 179 212
137 152 ― 172 205 ―
2.9 4.7 ― 6.1 8.4 ―
1.2 1.7 ― 2.9 3.1 ―
1 1 1 2 2 2.5
0.5 0.5 ― 0.5 0.5 ―
0.33 0.816 1.2 1.59 3.7 8.05
1.7 1.7 ― 3.1 3.1 ―
115 116.5 115 119 121 123
― 120 ― 126 132 149
135 143.5 165 161 189 227
147 157 ― 185 215 ―
3.9 4.7 ― 6.4 8.4 ―
1.7 1.7 ― 3.1 3.1 ―
1 1 1 2 2 2.5
0.5 0.5 ― 0.5 0.5 ―
0.515 0.849 1.46 1.96 4.36 9.54
1.7 1.7 ― 3.1
125 ― 126.5 ― 125 ― 129 136
145 157 158.5 173 175 ― 171 195
3.9 5.1 ― 6.4
1.7 1.7 ― 3.1
1 1 1 2
0.5 0.5 ― 0.5
0.555 1.15 1.56 2.07
min
max
3
（approx.）
2 Sealed and shielded bearings are also available. 3 This dimension applies to sealed and shielded bearings. 4 Does not include bearings with snap rings.
B-17
●Deep Groove Ball Bearings
B r
r D
d
Open type
Shielded type (ZZ)
Contact sealed type （LLU）
d 120∼170mm Boundary dimensions
Basic load ratings dynamic
mm
static kN
1
Limiting speeds
dynamic
static kgf
rpm grease oil open type open type ZZ Z
Bearing numbers
LLU
open type
sealed type
contact type
3,400 3,100
2,000 ―
6224 6324
ZZ ―
LLU ―
3,700 3,500 3,200 3,200 2,700 2,400
4,300 4,100 3,800 3,800 3,100 2,800
― ― ― 1,900 ― ―
6826 6926 16026 6026 6226 6326
― ― ― ZZ ― ―
― ― ― LLU ― ―
4,550 7,300 8,650 11,100 15,300 25,100
3,400 3,200 3,000 3,000 2,500 2,200
4,000 3,800 3,500 3,500 2,900 2,600
― ― ― 1,800 ― ―
6828 6928 16028 6028 6228 6328
― ― ― ZZ ― ―
― ― ― LLU ― ―
4,850 8,650 9,850 12,800 18,000 28,000
5,600 9,200 10,300 12,800 17,100 28,900
3,100 3,000 2,800 2,800 2,300 2,100
3,700 3,500 3,200 3,200 2,700 2,400
― ― ― 1,700 ― ―
6830 6930 16030 6030 6230 6330
― ― ― ZZ ― ―
― ― ― LLU ― ―
57.0 96.0 108 144 186 286
4,950 8,850 10,100 14,500 18,900 28,300
5,800 9,800 11,000 14,700 19,000 29,200
2,900 2,800 2,600 2,600 2,100 1,900
3,400 3,300 3,000 3,000 2,500 2,300
― ― ― 1,600 ― ―
6832 6932 16032 6032 6232 6332
― ― ― ZZ ― ―
― ― ― LLU ― ―
70.5 95.5 128 172 223 355
6,100 8,750 12,100 17,200 21,700 33,500
7,200 9,750 13,100 17,600 22,800 36,000
2,700 2,600 2,400 2,400 2,000 1,800
3,200 3,100 2,800 2,800 2,400 2,100
― ― ― ― ― ―
6834 6934 16034 6034 6234 6334
― ― ― ― ― ―
― ― ― ― ― ―
rNS
d
D
B
rs min
min
Cr
Cor
Cr
Cor
120
215 260
40 55
2.1 3
― ―
155 207
131 185
15,900 21,100
13,400 18,800
2,900 2,600
130
165 180 200 200 230 280
18 24 22 33 40 58
1.1 1.5 1.1 2 3 4
0.5 0.5 ― 0.5 ― ―
37.0 65.0 80.0 106 167 229
41.0 67.5 79.5 101 146 214
3,750 6,650 8,150 10,800 17,000 23,400
4,200 6,850 8,100 10,300 14,900 21,800
140
175 190 210 210 250 300
18 24 22 33 42 62
1.1 1.5 1.1 2 3 4
0.5 0.5 ― ― ― ―
38.5 66.5 82.0 110 166 253
44.5 71.5 85.0 109 150 246
3,900 6,800 8,350 11,200 17,000 25,800
150
190 210 225 225 270 320
20 28 24 35 45 65
1.1 2 1.1 2.1 3 4
0.5 ― ― ― ― ―
47.5 85.0 96.5 126 176 274
55.0 90.5 101 126 168 284
160
200 220 240 240 290 340
20 28 25 38 48 68
1.1 2 1.5 2.1 3 4
0.5 ― ― ― ― ―
48.5 87.0 99.0 143 185 278
170
215 230 260 260 310 360
22 28 28 42 52 72
1.1 2 1.5 2.1 4 4
― ― ― ― ― ―
60.0 86.0 119 168 212 325
1 Smallest allowable dimension for chamfer dimension r.
B-18
●Deep Groove Ball Bearings CY a
f
B
b
rN
rNa
r ro
r
D D1
ro
ra
d
Bearing numbers snap ring
― ―
― ―
N N ― N ― ―
NR 161.8 3.3 1.9 NR 176.8 3.7 1.9 ― ― NR 193.65 5.69 3.5 ― ― ― ― ― ― ― ―
0.6 0.6 ― 0.6 ― ―
N N ― ― ― ―
NR 171.8 NR 186.8 ― ― ― ― ― ― ― ―
3.3 3.7 ― ― ― ―
1.9 1.9 ― ― ― ―
N ― ― ― ― ―
NR 186.8 ― ― ― ― ― ― ― ― ― ―
3.3 ― ― ― ― ―
N ― ― ― ― ―
NR 196.8 ― ― ― ― ― ― ― ― ― ―
― ― ― ― ― ―
― ― ― ― ― ―
D1
a
b
ro
D2
f
max
max
min
max
max
max
― ― ― ― ― ―
― ―
― ―
― ―
― ―
da min
max
― ―
131 133
171.5 186.5 ― 212.9 ― ―
1.7 1.7 ― 3.1 ― ―
136.5 ― 138 ― 136.5 ― 139 148 143 ― 146 ―
0.6 0.6 ― ― ― ―
181.5 196.5 ― ― ― ―
1.7 1.7 ― ― ― ―
1.9 ― ― ― ― ―
0.6 ― ― ― ― ―
196.5 ― ― ― ― ―
3.3 ― ― ― ― ―
1.9 ― ― ― ― ―
0.6 ― ― ― ― ―
206.5 ― ― ― ― ―
― ― ― ― ― ―
― ― ― ― ― ―
― ― ― ― ― ―
― ― ― ― ― ―
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa When Por＜Fr use Por＝Fr
Snap ring dimensions mm
snap ring groove
― ―
da
With snap ring
Snap ring groove dimensions mm
2
DX Da
D2
With snap ring groove
2
CZ
3
4
Abutment and fillet dimensions
Mass
mm
kg
Da
DX
CY
CZ
ras
r Nas
max
（approx.）
max
min
max
max
― ―
― ―
2 2.5
― ―
5.15 12.4
158.5 173 172 188 193.5 ― 191 215 217 ― 264 ―
4.7 5.1 ― 8.4 ― ―
1.7 1.7 ― 3.1 ― ―
1 1.5 1 2 2.5 3
0.5 0.5 ― 0.5 ― ―
0.8 1.52 2.31 3.16 5.82 15.3
146.5 ― 148 ― 146.5 ― 149 158 153 ― 156 ―
168.5 183 182 198 203.5 ― 201 ― 237 ― 284 ―
4.7 5.1 ― ― ― ―
1.7 1.7 ― ― ― ―
1 1.5 1 2 2.5 3
0.5 0.5 ― ― ― ―
0.85 1.62 2.45 3.35 7.57 18.5
1.7 ― ― ― ― ―
156.5 ― 159 ― 156.5 ― 161 169 163 ― 166 ―
183.5 198 201 ― 218.5 ― 214 ― 257 ― 304 ―
4.7 ― ― ― ― ―
1.7 ― ― ― ― ―
1 2 1 2 2.5 3
0.5 ― ― ― ― ―
1.16 2.47 3.07 4.08 9.41 22
1.7 ― ― ― ― ―
166.5 ― 169 ― 168 ― 171 183 173 ― 176 ―
193.5 208 211 ― 232 ― 229 ― 277 ― 324 ―
4.7 ― ― ― ― ―
1.7 ― ― ― ― ―
1 2 1.5 2 2.5 3
0.5 ― ― ― ― ―
1.23 2.61 3.64 5.05 11.7 26
― ― ― ― ― ―
176.5 179 178 181 186 186
― ― ― ― ― ―
― ― ― ― ― ―
1 2 1.5 2 3 3
― ― ― ― ― ―
1.63 2.74 4.93 6.76 14.5 30.7
143 ―
― ― ― ― ― ―
204 247
208.5 221 252 249 294 344
― ―
（approx.）
― ― ― ― ― ―
2 Sealed and shielded bearings are also available. 3 This dimension applies to sealed and shielded bearings. 4 Does not include bearings with snap rings.
B-19
●Deep Groove Ball Bearings
B ra
r
ra
r D
Da
d
da
Open Type
d 180∼260mm Boundary dimensions
Basic load ratings dynamic
mm
static
Limiting speeds
dynamic
kN
static kgf
Bearing numbers
rpm
Cr
Cor
Cr
Cor
grease open type
1.1 2 2 2.1 4 4
60.5 110 117 189 227 355
73.0 119 134 199 241 405
6,200 11,200 11,900 19,300 23,200 36,000
7,450 12,200 13,600 20,300 24,600 41,500
2,600 2,400 2,300 2,300 1,900 1,700
3,000 2,900 2,700 2,700 2,200 2,000
6836 6936 16036 6036 6236 6336
24 33 31 46 55 78
1.5 2 2 2.1 4 5
73.0 113 134 197 255 355
88.0 127 156 215 281 415
7,450 11,500 13,700 20,100 26,000 36,000
9,000 13,000 15,900 21,900 28,700 42,500
2,400 2,300 2,100 2,100 1,800 1,600
2,900 2,700 2,500 2,500 2,100 1,900
6838 6938 16038 6038 6238 6338
200
250 280 310 310 360 420
24 38 34 51 58 80
1.5 2.1 2 2.1 4 5
74.0 157 142 218 269 410
91.5 168 160 243 310 500
7,550 16,000 14,400 22,200 27,400 42,000
9,300 17,100 16,300 24,800 31,500 51,000
2,300 2,200 2,000 2,000 1,700 1,500
2,700 2,600 2,400 2,400 2,000 1,800
6840 6940 16040 6040 6240 6340
220
270 300 340 340 400 460
24 38 37 56 65 88
1.5 2.1 2.1 3 4 5
76.5 160 181 241 297 410
98.0 180 216 289 365 520
7,800 16,400 18,500 24,600 30,500 42,000
10,000 18,400 22,000 29,400 37,000 53,000
2,100 2,000 1,800 1,800 1,500 1,400
2,400 2,300 2,200 2,200 1,800 1,600
6844 6944 16044 6044 6244 6344
240
300 320 360 360
28 38 37 56
2 2.1 2.1 3
85.0 170 178 249
112 203 217 310
8,650 17,300 18,200 25,400
11,400 20,700 22,100 32,000
1,900 1,800 1,700 1,700
2,200 2,100 2,000 2,000
6848 6948 16048 6048
260
320 360 400 400
28 46 44 65
2 2.1 3 4
87.0 222 227 291
120 280 299 375
8,900 22,600 23,200 29,700
12,200 28,500 30,500 38,500
1,700 1,600 1,500 1,500
2,000 1,900 1,800 1,800
6852 6952 16052 6052
d
1
D
B
rs min
180
225 250 280 280 320 380
22 33 31 46 52 75
190
240 260 290 290 340 400
1 Smallest allowable dimension for chamfer dimension r.
B-20
oil open type
open type
●Deep Groove Ball Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa When Por＜Fr use Por＝Fr
Abutment and fillet dimensions
Mass
mm
kg
da
Da
ras
min
max
max
（approx.）
186.5 189 189 191 196 196
218.5 241 271 269 304 364
1 2 2 2 3 3
2.03 4.76 6.49 8.8 15.1 35.6
198 199 199 201 206 210
232 251 281 279 324 380
1.5 2 2 2 3 4
2.62 4.98 6.77 9.18 18.2 41
208 211 209 211 216 220
242 269 301 299 344 400
1.5 2 2 2 3 4
2.73 7.1 8.68 11.9 21.6 46.3
228 231 231 233 236 240
262 289 329 327 384 440
1.5 2 2 2.5 3 4
3 7.69 11.3 15.7 30.2 60.8
249 251 251 253
291 309 349 347
2 2 2 2.5
4.6 8.28 12.1 16.8
269 271 273 276
311 349 387 384
2 2 2.5 3
5 13.9 18.5 25
B-21
●Deep Groove Ball Bearings
B ra
r
ra
r D
Da
d
da
Open Type
d 280∼440mm Boundary dimensions
Basic load ratings dynamic
mm
static
Limiting speeds
dynamic
kN
static kgf
Bearing numbers
rpm
Cr
Cor
grease open type
177 299 315 420
13,900 23,200 23,700 33,000
18,100 30,500 32,500 43,000
1,600 1,500 1,400 1,400
1,900 1,800 1,600 1,600
6856 6956 16056 6056
162 276 292 355
210 375 410 480
16,500 28,200 29,800 36,000
21,500 38,500 42,000 49,000
1,500 1,400 1,300 1,300
1,700 1,600 1,500 1,500
6860 6960 16060 6060
2.1 3 4 4
168 285 300 370
228 405 440 530
17,200 29,000 30,500 38,000
23,200 41,000 45,000 54,000
1,400 1,300 1,200 1,200
1,600 1,500 1,400 1,400
6864 6964 16064 6064
38 56 57 82
2.1 3 4 5
170 293 340 420
236 430 515 610
17,400 29,800 35,000 42,500
24,000 44,000 52,500 62,500
1,300 1,200 1,100 1,100
1,500 1,400 1,300 1,300
6868 6968 16068 6068
360
440 480 540 540
38 56 57 82
2.1 3 4 5
187 300 350 440
258 455 550 670
19,100 30,500 36,000 44,500
26,300 46,500 56,000 68,000
1,200 1,100 1,100 1,100
1,400 1,300 1,200 1,200
6872 6972 16072 6072
380
480 520 560
46 65 82
2.1 4 5
231 325 455
340 510 725
23,600 33,000 46,500
34,500 52,000 74,000
1,100 1,100 990
1,300 1,200 1,200
6876 6976 6076
400
500 540 600
46 65 90
2.1 4 5
226 335 510
340 535 825
23,100 34,000 52,000
34,500 54,500 84,000
1,100 990 930
1,200 1,200 1,100
6880 6980 6080
420
520 560 620
46 65 90
2.1 4 5
260 340 530
405 560 895
26,500 35,000 54,000
41,500 57,000 91,000
1,000 940 880
1,200 1,100 1,000
6884 6984 6084
440
540 600
46 74
2.1 4
264 365
420 615
26,900 37,500
43,000 63,000
950 890
1,100 1,000
6888 6988
d
1
D
B
rs min
Cr
Cor
280
350 380 420 420
33 46 44 65
2 2.1 3 4
137 227 232 325
300
380 420 460 460
38 56 50 74
2.1 3 4 4
320
400 440 480 480
38 56 50 74
340
420 460 520 520
1 Smallest allowable dimension for chamfer dimension r.
B-22
oil open type
open type
●Deep Groove Ball Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa When Por＜Fr use Por＝Fr
Abutment and fillet dimensions
Mass
mm
kg
da
Da
ras
min
max
max
289 291 293 296
341 369 407 404
2 2 2.5 3
7.4 14.8 23 31
311 313 316 316
369 407 444 444
2 2.5 3 3
10.5 23.5 32.5 43.8
331 333 336 336
389 427 464 464
2 2.5 3 3
10.9 24.8 34.2 46.1
351 353 356 360
409 447 504 500
2 2.5 3 4
11.5 26.2 47.1 61.8
371 373 376 380
429 467 524 520
2 2.5 3 4
12.3 27.5 49.3 64.7
391 396 400
469 504 540
2 3 4
19.7 39.8 67.5
411 416 420
489 524 580
2 3 4
20.6 41.6 87.6
431 436 440
509 544 600
2 3 4
21.6 43.4 91.1
451 456
529 584
2 3
22.5 60
（approx.）
B-23
●Deep Groove Ball Bearings
B ra
r
ra
r D
Da
d
da
Open Type
d 460∼600mm Boundary dimensions
Basic load ratings dynamic
mm d
static kN
1
D
B
rs min
460
580 620
56 74
480
600 650
500
Limiting speeds
dynamic
static kgf
Bearing numbers
rpm oil open type
open type
900 850
1,100 1,000
6892 6992
55,000 78,500
860 810
1,000 950
6896 6996
33,500 45,500
57,000 82,500
820 770
970 910
68/500 69/500
580
34,000
59,500
770
900
68/530
335
600
34,000
61,500
710
840
68/560
375
705
38,500
72,000
660
780
68/600
Cr
Cor
Cr
Cor
3 4
315 375
515 645
32,000 38,500
52,500 66,000
56 78
3 5
320 430
540 770
32,500 44,000
620 670
56 78
3 5
325 445
560 805
530
650
56
3
330
560
680
56
3
600
730
60
3
1 Smallest allowable dimension for chamfer dimension r.
B-24
grease open type
●Deep Groove Ball Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa When Por＜Fr use Por＝Fr
Abutment and fillet dimensions
Mass
mm
kg
da
Da
ras
min
max
max
473 476
567 604
2.5 3
34.8 62.2
493 500
587 630
2.5 4
36.2 73.0
513 520
607 650
2.5 4
37.5 75.5
543
637
2.5
39.5
573
667
2.5
41.5
613
717
2.5
51.7
（approx.）
B-25
Expansion Compensating Bearings B r r D
d
Open type
Shielded type (ZZ)
Non-contact sealed type (LLB)
d 10 ‘50mm Boundary dimensions
Basic load ratings dynamic static
dynamic
static
Allowable load
Limiting speeds
Contact sealed type （LLU） Bearing numbers
Cr
Cor
Cr
Cor
Cp
Cp
rpm grease oil open type open type ZZ,LLB Z,LB
0.3 0.6 0.6
4.55 5.10 8.20
1.96 2.39 3.50
465 520 835
200 244 355
1.65 2.39 3.45
168 244 355
29,000 34,000 25,000 30,000 23,000 27,000
21,000 18,000 16,000
EC-6000 ZZ EC-6200 ZZ EC-6300 ZZ
LLB LLB LLB
LLU LLU LLU
8 10 12
0.3 0.6 1
5.10 6.10 9.70
2.39 2.75 4.20
520 620 990
244 280 425
1.78 2.29 3.65
181 233 375
26,000 30,000 22,000 26,000 20,000 24,000
18,000 16,000 15,000
EC-6001 ZZ EC-6201 ZZ EC-6301 ZZ
LLB LLB LLB
LLU LLU LLU
32 35 42
9 11 13
0.3 0.6 1
5.60 7.75 11.4
2.83 3.60 5.45
570 790 1,170
289 365 555
2.83 2.78 4.40
289 284 450
22,000 26,000 19,000 23,000 17,000 21,000
15,000 15,000 12,000
EC-6002 ZZ EC-6202 ZZ EC-6302 ZZ
LLB LLB LLB
LLU LLU LLU
17
35 40 47
10 12 14
0.3 0.6 1
6.80 9.60 13.5
3.35 4.60 6.55
695 980 1,380
345 465 665
2.88 3.45 6.55
294 350 665
20,000 24,000 18,000 21,000 16,000 19,000
14,000 12,000 11,000
EC-6003 ZZ EC-6203 ZZ EC-6303 ZZ
LLB LLB LLB
LLU LLU LLU
20
42 47 52
12 14 15
0.6 1 1.1
9.40 12.8 15.9
5.05 6.65 7.90
955 1,310 1,620
515 680 805
5.05 6.55 7.90
515 515 805
18,000 21,000 16,000 18,000 14,000 17,000
11,000 10,000 10,000
EC-6004 ZZ EC-6204 ZZ EC-6304 ZZ
LLB LLB LLB
LLU LLU LLU
25
47 52 62
12 15 17
0.6 1 1.1
10.1 14.0 21.2
5.85 7.85 10.9
1,030 595 5.85 595 1,430 800 6.55 665 2,160 1,110 10.9 1,110
15,000 18,000 13,000 15,000 12,000 14,000
9,400 8,900 8,100
EC-6005 ZZ EC-6205 ZZ EC-6305 ZZ
LLB LLB LLB
LLU LLU LLU
30
55 62 72
13 16 19
1 1 1.1
13.2 19.5 26.7
8.30 11.3 15.0
1,350 845 8.30 845 1,980 1,150 9.85 1,000 2,720 1,530 15.0 1,530
13,000 15,000 11,000 13,000 10,000 12,000
7,700 7,300 6,600
EC-6006 ZZ EC-6206 ZZ EC-6306 ZZ
LLB LLB LLB
LLU LLU LLU
35
62 72 80
14 17 21
1 1.1 1.5
16.0 25.7 33.5
10.3 15.3 19.1
1,630 1,050 10.3 2,620 1,560 14.5 3,400 1,950 18.5
1,050 1,480 1,890
12,000 14,000 9,800 11,000 8,800 10,000
6,800 6,300 6,000
EC-6007 ZZ EC-6207 ZZ EC-6307 ZZ
LLB LLB LLB
LLU LLU LLU
40
68 80 90
15 18 23
1 1.1 1.5
16.8 29.1 40.5
11.5 17.8 24.0
1,710 1,170 11.5 2,970 1,820 17.5 4,150 2,450 23.4
1,170 1,780 2,380
10,000 12,000 8,700 10,000 7,800 9,200
6,100 5,600 5,300
EC-6008 ZZ EC-6208 ZZ EC-6308 ZZ
LLB LLB LLB
LLU LLU LLU
45
75 85 100
16 19 25
1 1.1 1.5
21.0 32.5 53.0
15.1 20.4 32.0
2,140 1,540 15.1 3,350 2,080 16.2 5,400 3,250 27.4
1,540 1,660 2,790
9,200 11,000 7,800 9,200 7,000 8,200
5,400 5,200 4,700
EC-6009 ZZ EC-6209 ZZ EC-6309 ZZ
LLB LLB LLB
LLU LLU LLU
50
80 90 110
16 20 27
1 1.1 2
21.8 35.0 62.0
16.6 23.2 38.5
2,230 1,690 16.6 3,600 2,370 22.2 6,300 3,900 33.0
1,690 2,270 3,350
8,400 7,100 6,400
5,000 4,700 4,200
EC-6010 ZZ EC-6210 ZZ EC-6310 ZZ
LLB LLB LLB
LLU LLU LLU
mm
kN
d
D
B
10
26 30 35
8 9 11
12
28 32 37
15
rs min
2
kgf
kN
kgf
9,800 8,300 7,500
1
LU,LLU
open type
non1 1 sealed contact contact type type type
1 This bearing number is for double sealed and double shielded type bearings, but single sealed and single shielded type are also available. 2 Smallest allowable dimension for chamfer dimension r.
B-26
Expansion Compensating Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ≦e Fr Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1.61 0.10 0.29 1 0 0.56 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 0.40 0.41 1.05 0.50 0.44 1.00 static Por＝0.6Fr＋0.5Fa
ra
ra Da
da
Abutment and fillet dimensions mm da
Mass kg open type
3 max
Da
ras
max
max
12 14 14
13.5 16 17
24 26 31
0.3 0.6 0.6
0.019 0.031 0.051
14 16 17
16 17.5 18.5
26 28 32
0.3 0.6 1
0.021 0.036 0.058
17 19 20
19 20.5 23
30 31 37
0.3 0.6 1
0.029 0.043 0.079
19 21 22
21 23 25
33 36 42
0.3 0.6 1
0.037 0.062 0.11
24 25 26.5
26 28 28.5
38 42 45.5
0.6 1 1
0.066 0.101 0.139
29 30 31.5
30.5 32 35
43 47 55.5
0.6 1 1
0.075 0.122 0.223
35 35 36.5
37 39 43
50 57 65.5
1 1 1
0.11 0.191 0.334
40 41.5 43
42 45 47
57 65.5 72
1 1 1.5
0.148 0.277 0.44
45 46.5 48
47 51 54
63 73.5 82
1 1 1.5
0.183 0.352 0.609
50 51.5 53
52.5 55.5 61.5
70 78.5 92
1 1 1.5
0.233 0.391 0.80
55 56.5 59
57.5 60 68.5
75 83.5 101
1 1 2
0.246 0.444 1.03
min
When Por＜Fr use Por＝Fr
iapprox. j
3 This dimension applies to sealed and shielded bearings.
B-27
●Miniature and Extra Small Bearings
Open type
Shielded type
Open type with snap ring
1. Design features and special characteristics The dimensional range of miniature and extra small ball bearings is given in Table 1. Boundary dimensions for both metric and inch systems are in accordance with the internationally specified ISO and ANSI/ABMA standards. The most widely used sealed and shielded type ball bearings have a 1–2 mm wider width dimension than open type bearings. The main variations of these bearings are shown in Table 2. Bearings with snap rings, which simplify the bearing housing construction and design, have also been serialized and are listed in dimension tables. Among the most generally used sealed and shielded bearings are standard ZZ and ZZA type which incorporate non-contact steel shield plates. Diagram 1 also shows non-contact type rubber sealed LLB and resin sealed SSA type bearings, and the contact-type rubber sealed LLU bearing.
Table 1 Dimensional range Bearing
Dimensional range
Miniature ball bearings
Nominal outer diameter D＜9mm
Extra small ball bearings
Nominal bore diameter d＜10mm Nominal outer diameter D≧9mm
Rubber sealed (non-contact type) LLB
Rubber sealed (contact type) LLU
Resin sealed (non-contact type) SSA
Diagram 1.
Table 2 Main types and construction Standard type code Type
Open type
Shielded type
Construction
Metric system
6 BC
6 X X ZZ W 6 X X ZZ WBC X X X ZZ
Flange-attached type code Inch system
Construction
Metric system
Inch system
R
FL6 FLBC
FLR
RA X X ZZ
FL 6 X X X ZZ FLW 6 X X X ZZ FLWBC X X ZZ
FLRA X X ZZ
Note: 1. Representative type codes are shown. For further details, please refer to dimension tables. 2. For shielded type bearings, there are instances where ZA may change to SA depending on the bearing number.
B-29
●Miniature and Extra Small Bearings
2. Standard cage types
3. Dimensional and rotational accuracy
Pressed cages are standard for these bearings. However, molded resin cages are used for some bearings depending on the application.
The accuracy of miniature and small ball bearings complies with JIS standards. Accuracy standards are listed in the Bearings Accuracy clause on page A-31. Flange accuracies are listed in Table 3.
Table 3 Accuracy of outer ring flanges Outer diameter dimensional tolerance ∆D1S or ∆D2S Above Below
Back face axial runout
Width dimension tolerance
Width unevenness
Sea1 Max.
∆C1S or ∆C2S Above Below
VC1S or VC2S Max.
Class 0
―
―
Class 6
―
―
8
11
4
7
Class 5 Class 4
＊ (see table below)
Class 2
1.5
31 4
1 Nominal outer diameter, 18 mm or less.
＊
Units
Flange nominal outer diameter D1 or D2 mm over up to incl.
μm
Outside cylindrical surface runout relative to back face SD1 Max.
Accuracy class
ISO standard
Units
μm
Outer diameter dimensional tolerance ∆D1S or ∆D2S Above
Below
―
10
＋220
−36
10
18
＋270
−43
18
30
＋330
−52
30
50
＋390
−62
B-30
Identical to same bearing's inner ring V BS Identical to same bearing's inner ring VBS
5 2.5 1.5
●Miniature and Extra Small Bearings
4. Radial internal clearance Radial internal clearance values should be applied as listed in the table regarding the Bearing Internal Clearance and Preload clause on page A-54. However, for miniature and extra small bearings, the radial clearance values for high precision bearings given in Table 4
are applied in many cases. For more specific selection information, please refer to the NTN Miniature and Extra Small Ball Bearings Catalog, or contact NTN Engineering.
Table 4 Radial internal clearance for high precision bearings MIL Standard Code Internal clearance
Tight C2S Min.
Max.
0 5
Units
Standard CNS
Min.
Max.
3 8
CNM Min.
Max.
5 10
CNL Min.
Max.
8 13
Loose C3S Min.
Max.
10 15
Note: 1. These standards are specified in accordance with MIL 23063. However, NTN codes are shown. 2. Clearance values do not include compensation for measuring load.
B-31
C3M Min.
Max.
13 20
μm
Extra Loose C3L Min.
Max.
20 28
●Miniature and Extra Small Ball Bearings Metric system sizes B B
B1
B1
B1 C1
C2
d D1
D2
r
r
r
r D
d
D
Open type
With single shield (Z)
With double shield (ZZ)
With flanged outer ring (FL)
With flanged outer ring and single shield (FL…Z)
d 1.5∼5mm Boundary dimensions
Basic load ratings dynamic
mm
static
dynamic
N 1
Limiting speeds static
kgf
rpm Cor
grease
oil
10.0 17.0 28.0
3.00 5.00 9.00
88,000 79,000 71,000
100,000 93,000 84,000
37.0 51.0 51.0 89.0 89.0 120 125
11.0 17.0 17.0 28.0 28.0 40.0 39.0
4.00 5.00 5.00 9.00 9.00 12.0 13.0
83,000 74,000 74,000 67,000 67,000 59,000 62,000
98,000 87,000 87,000 79,000 79,000 70,000 73,000
153 209 284 284 430 550
59.0 73.0 96.0 96.0 152 174
16.0 21.0 29.0 29.0 44.0 56.0
6.00 7.50 10.0 10.0 16.0 18.0
70,000 65,000 59,000 59,000 56,000 56,000
82,000 76,000 70,000 70,000 66,000 66,000
0.08 0.1 0.15 0.15 0.15 0.15 0.15
242 390 560 560 635 635 640
94.0 130 180 180 219 219 224
25.0 40.0 57.0 57.0 65.0 65.0 65.0
9.50 13.0 18.0 18.0 22.0 22.0 23.0
60,000 58,000 54,000 54,000 50,000 50,000 50,000
71,000 68,000 63,000 63,000 59,000 59,000 58,000
0.6 0.6 1 0.8 1 1 1 ―
0.08 0.08 0.15 0.15 0.15 0.2 0.2 0.3
222 395 640 650 715 970 1,310 1,760
88.0 140 224 235 276 360 490 680
23.0 40.0 65.0 66.0 73.0 99.0 134 179
9.00 14.0 23.0 24.0 28.0 36.0 50.0 69.0
54,000 52,000 49,000 46,000 45,000 43,000 42,000 37,000
63,000 61,000 57,000 55,000 52,000 51,000 49,000 44,000
0.6 0.6 0.8
0.08 0.15 0.15
217 500 715
91.0 211 276
22.0 51.0 73.0
9.50 21.0 28.0
49,000 46,000 45,000
57,000 55,000 52,000
d
D
B
B1
D1
D2
C1
C2
rs min
Cr
Cor
Cr
1.5
4 5 6
1.2 2 2.5
2 2.6 3
5 6.5 7.5
5 6.5 7.5
0.4 0.6 0.6
0.6 0.8 0.8
0.15 0.15 0.15
102 171 274
29.0 51.0 86.0
2
4 5 5 6 6 7 7
1.2 1.5 2 2.3 2.5 2.5 2.8
2 2.3 2.5 3 ― ― 3.5
― 6.1 ― 7.5 7.2 ― 8.5
― 6.1 ― 7.5 ― ― 8.5
― 0.5 ― 0.6 0.6 ― 0.7
― 0.6 ― 0.8 ― ― 0.9
0.05 0.08 0.1 0.15 0.15 0.15 0.15
104 171 171 279 279 390 380
2.5
5 6 7 7 8 8
1.5 1.8 3 2.5 2.5 2.8
2.3 2.6 3 3.5 2.8 4
― 7.1 ― 8.5 9.2 9.5
― 7.1 8.2 8.5 ― 9.5
― 0.5 ― 0.7 0.6 0.7
― 0.8 0.6 0.9 ― 0.9
0.08 0.08 0.15 0.15 0.15 0.15
3
6 7 8 8 9 9 10
2 2 2.5 3 2.5 3 4
2.5 3 ― 4 4 5 4
7.2 8.1 9.2 9.5 10.2 10.5 11.5
7.2 8.1 ― 9.5 10.6 10.5 11.5
0.6 0.5 0.6 0.7 0.6 0.7 1
0.6 0.8 ― 0.9 0.8 1 1
4
7 8 9 10 11 12 13 16
2 2 2.5 3 4 4 5 5
2.5 3 4 4 4 4 5 5
8.2 9.2 10.3 11.2 12.5 13.5 15 ―
8.2 9.2 10.3 11.6 12.5 13.5 15 ―
0.6 0.6 0.6 0.6 1 1 1 ―
5
8 9 10
2 2.5 3
2.5 3 4
9.2 10.2 11.2
9.2 10.2 11.6
0.6 0.6 0.6
1 Smallest allowable dimension for chamfer dimension r.
B-32
●Miniature and Extra Small Ball Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa Fr ≦e Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1 0 0.56 1.61 0.10 0.29 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 static Por＝0.6Fr＋0.5Fa
B1 C2 ra ra
ra D2
da
Da
da
With flanged outer ring and double shield (FL…ZZ)
When Por＜Fr use Por＝Fr
Bearing numbers
Abutment and fillet dimensions
Mass (approx.）
mm open
with single shield
with double with flanged shield outer ring
with flanged OR and with flanged OR and single shield double shield min
g Da
ras
max
max
max
open
with flanged outer ring
da 2
68/1.5 69/1.5A 60/1.5
W68/1.5SA W69/1.5ASA W60/1.5ZA
SSA SSA ZZA
FL68/1.5 FL69/1.5A FL60/1.5
FLW68/1.5SA FLW69/1.5ASA FLW60/1.5ZA
SSA SSA ZZA
2.3 2.7 2.7
2.4 2.9 3.0
3.2 3.8 4.8
0.05 0.15 0.15
0.07 0.18 0.35
0.09 0.24 0.42
672 682 BC2-5 692 BC2-6 BC2-7A 602
― W682SA WBC2-5SA W692SA ― ― W602ZA
― SSA SSA SSA ― ― ZZA
― FL682 ― FL692 FLBC2-6 ― FL602
― FLW682SA ― FLW692SA ― ― FLW602ZA
― SSA ― SSA ― ― ZZA
2.5 2.8 2.8 3.2 3.2 3.2 3.2
2.6 2.9 2.9 3.3 3.3 3.6 3.7
3.5 4.2 4.2 4.8 4.8 5.8 5.8
0.05 0.08 0.10 0.15 0.15 0.15 0.15
0.06 0.13 0.16 0.31 0.32 0.44 0.54
― 0.17 ― 0.38 0.38 ― 0.64
67/2.5 68/2.5 ― 69/2.5 BC2.5-8 60/2.5
W67/2.5ZA W68/2.5ZA WBC2.5-7ZA W69/2.5SA WBC2.5-8ZA W60/2.5ZA
ZZA ZZA ZZA SSA ZZA ZZA
― FL68/2.5 ― FL69/2.5 FLBC2.5-8 FL60/2.5
― FLW68/2.5ZA FLWBC2.5-7ZA FLW69/2.5SA ― FLW60/2.5ZA
― ZZA ZZA SSA ― ZZA
3.1 3.1 3.7 3.7 3.7 3.7
3.3 3.6 4.0 4.0 4.3 4.1
4.4 4.8 5.8 5.8 6.8 6.8
0.08 0.08 0.15 0.15 0.15 0.15
0.11 0.22 3 0.6 0.43 0.57 0.72
― 0.26 3 0.67 0.53 0.65 0.83
673 683 BC3-8 693 BC3-9 603 623
WA673SA W683ZA ― W693Z WBC3-9ZA W603ZA 623ZA
SSA ZZA ― ZZ ZZA ZZA ZZA
FL673 FL683 FLBC3-8 FL693 FLBC3-9 FL603 FL623
FLWA673SA FLW683ZA ― FLW693Z FLAWBC3-9ZA FLW603ZA FL623ZA
SSA ZZA ― ZZ ZZA ZZA ZZA
3.6 3.9 4.2 4.2 4.2 4.2 4.2
4.1 4.1 4.4 4.4 5.0 5.0 5.2
5.4 5.8 6.8 6.8 7.8 7.8 8.8
0.08 0.1 0.15 0.15 0.15 0.15 0.15
0.2 0.33 0.52 0.61 0.71 0.92 1.6
0.26 0.38 0.6 0.72 0.79 1 1.8
674A BC4-8 684AX50 BC4-10 694
WA674ASA WBC4-8Z W684AX50Z WBC4-10Z 694Z ZZ 5.2
SSA ZZ ZZ ZZ
FL674A FLBC4-8 FL684AX50 FLBC4-10
FLWA674ASA FLWBC4-8Z FLW684AX50Z FLAWBC4-10Z
SSA ZZ ZZ ZZ
4.6 4.8 5.0 5.2
5.0 5.0 5.2 6.0
6.4 6.8 7.8 8.8
0.08 0.08 0.1 0.15
0.28 0.38 0.67 1
0.35 0.46 0.76 1.1
8.8
0.85
0.72
2 This dimension applies to sealed and shielded bearings. 3 Values for double shielded bearings shown
B-33
●Miniature and Extra Small Ball Bearings
B B
B1
B1
B1 C1
C2
d D1
D2
r
r
r
r D
d
D
Open type
With single shield (Z)
With double shield (ZZ)
With flanged outer ring (FL)
With flanged outer ring and single shield (FL…Z)
d 5∼9mm Boundary dimensions
Basic load ratings dynamic
mm d
D
B
B1
D1
static
dynamic
N D2
C1
C2
rs min
1
5
6
7
8
9
1 Smallest allowable dimension for chamfer dimension r.
B-34
Cr
Limiting speeds static
kgf Cor
Cr
rpm Cor
grease
oil
●Miniature and Extra Small Ball Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa Fr ≦e Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1 0 0.56 1.61 0.10 0.29 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 static Por＝0.6Fr＋0.5Fa
B1 C2 ra ra
ra D2
da
Da
da
With flanged outer ring and double shield (FL…ZZ)
When Por＜Fr use Por＝Fr
Bearing numbers
Abutment and fillet dimensions
Mass (approx.）
mm open
with single shield
with double with flanged shield outer ring
with flanged OR and with flanged OR and single shield double shield min
da 2
max
g Da
ras
max
max
open
with flanged outer ring
− 685 695 − 605 625 635
WBC5-11Z W685Z 695Z WBC5-13Z 605Z 625Z 635Z
ZZ ZZ ZZ ZZ ZZ ZZ ZZ
― FL685 FL695 ― FL605 FL625 ―
FLWBC5-11Z FLW685Z FL695Z FLWBC5-13Z FL605Z FL625Z ―
ZZ ZZ ZZ ZZ ZZ ZZ ―
6.2 6.2 6.6 6.6 6.6 7 7
6.8 6.8 6.9 6.9 7.4 7.6 9.5
9.8 9.8 11.4 11.4 12.4 14 17
0.2 0.15 0.2 0.2 0.2 0.3 0.3
1.8 1.1 2.4 3 3.4 3.5 4.8 8
2 1.3 2.7 3 3.7 3.9 5.2 ―
676A BC6-12 686 696 BC6-16A 606 626
WA676AZ WBC6-12Z W686Z 696Z BC6-16AZ 606Z 626Z
ZZ ZZ ZZ ZZ ZZ ZZ ZZ
FL676A FLBC6-12 FL686 FL696 ― FL606 FL626
FLWA676AZ FLAWBC6-12Z FLW686Z FL696Z ― FL606Z FL626Z
ZZ ZZ ZZ ZZ ― ZZ ZZ
6.6 7.2 7.0 7.6 7.6 8 8
6.7 7.9 7.2 7.8 8.0 8.6 9.5
9.2 10.8 11.8 13.4 14.4 15 17
0.1 0.15 0.15 0.2 0.2 0.3 0.3
0.65 1.3 1.9 3.8 5.2 6 8.1
0.74 1.4 2.2 4.3 ― 6.5 9.2
677 BC7-13 687A 697 607 627
WA677ZA WBC7-13ZA W687AZ 697Z 607Z 627Z
ZZA ZZA ZZ ZZ ZZ ZZ
FL677 FLBC7-13 FL687A FL697 ― ―
FLWA677ZA FLAWBC7-13ZA FLW687AZ FL697Z ― ―
ZZA ZZA ZZ ZZ ― ―
7.8 8.2 8.2 9 9 9
8.1 8.9 8.7 10.0 10.4 12.2
10.2 11.8 12.8 15 17 20
0.1 0.15 0.15 0.3 0.3 0.3
0.67 1.4 2.1 5.2 8 13
0.77 1.5 2.4 5.7 ― ―
678A BC8-14 688A 698 608 628
W678AZ WBC8-14Z W688AZ 698Z 608Z 628Z
ZZ ZZ ZZ ZZ ZZ ZZ
FL678A FLBC8-14 FL688A FL698 FL608 ―
FLAW678AZ FLWBC8-14Z FLW688AZ FL698Z FL608Z ―
ZZ ZZ ZZ ZZ ZZ ―
8.8 9.2 9.6 10 10 10
9.1 9.5 10.0 10.6 12.2 12.1
11.2 12.8 14.4 17 20 22
0.1 0.15 0.2 0.3 0.3 0.3
0.75 1.8 3.1 7.3 12 17
0.86 1.9 3.5 8.4 13 ―
679 689 699 609 629X50
W679ZA W689Z 699Z 609Z 629X50Z
ZZA ZZ ZZ ZZ ZZ
― FL689 − − −
― FLW689Z − − −
― ZZ − − −
9.8 10.6 11 11 13
10.4 10.7 11.6 13.1 13.9
13.2 15.4 18 22 22
0.1 0.2 0.3 0.3 0.3
1.4 3.2 8.2 14 20
― 3.6 ― ― ―
2 This dimension applies to sealed and shielded bearings. 3 Values for double shielded bearings shown.
B-35
Miniature and Extra Small Ball Bearings Inch system sizes B B
B1
B1
B1 C1
C2
d D1
D1
r
r
r
r D
d
D
Open type
With single shield (Z)
With double shield (ZZ)
With flanged outer ring (FL)
With flanged outer ring and single shield (FL…Z)
d 1.984∼9.525mm Boundary dimensions
Basic load ratings dynamic
static
dynamic
Cr
Cor
Cr
mm d
D
1.984
6.35
2.380
B
N 1
Limiting speeds static kgf
rpm Cor
grease
oil
28
9
67,000
79,000
42.0 152
13 44
4.5 16
73,000 56,000
85,000 66,000
96.0 180 224 224 395
29 57 65 65 117
10 18 23 23 40
59,000 54,000 49,000 49,000 43,000
70,000 63,000 58,000 58,000 51,000
133
34
14
51,000
60,000
395 710 1,310 1,310
143 268 490 490
40 72 134 134
15 27 50 50
49,000 46,000 41,000 41,000
58,000 55,000 48,000 48,000
0.08 0.13 0.3 0.41
210 830 1,480 2,340
94.0 370 615 885
21 84 151 238
9.5 38 63 90
43,000 39,000 36,000 34,000
51,000 46,000 43,000 40,000
0.41
3,300 1,400
31,000
37,000
B1
D1
C1
C2
rs min
2.38
3.571
7.52
0.58
0.79
0.08
279
89.0
4.762 7.938
1.588 2.779
2.38 3.571
5.94 9.12
0.46 0.58
0.79 0.79
0.08 0.13
124 430
3.175
6.35 7.938 9.525 9.525 12.7
2.38 2.779 2.779 3.967 4.366
2.779 3.571 3.571 3.967 4.366
7.52 9.12 10.72 11.18 ―
0.58 0.58 0.53 0.76 ―
0.79 0.79 0.79 0.76 ―
0.08 0.08 0.13 0.3 0.3
284 560 640 640 1,150
3.967
7.938
2.779
3.175
9.12
0.58
0.91
0.08
335
4.762
7.938 9.525 12.7 12.7
2.779 3.175 3.967 4.978
3.175 3.175 ― 4.978
9.12 10.72 ― 14.35
0.58 0.58 ― 1.07
0.91 0.79 ― 1.07
0.08 0.08 0.3 0.3
6.350
9.525 12.7 15.875 19.05
3.175 3.175 4.978 ―
3.175 4.762 4.978 7.142
10.72 13.89 17.53 ―
0.58 0.58 1.07 ―
0.91 1.14 1.07 ―
9.525
22.225
―
7.142
24.61
―
1.57
1 Smallest allowable dimension for chamfer dimension r.
B-36
340
142
Miniature and Extra Small Ball Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa Fr ≦e Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1 0 0.56 1.61 0.10 0.29 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 static Por＝0.6Fr＋0.5Fa
B1 C2 ra ra
ra D1
da
Da
da
With flanged outer ring and double shield (FL…ZZ)
When Por＜Fr use Por＝Fr
Bearing numbers
Abutment and fillet dimensions
Mass (approx.
mm open
with single shield
with double with flanged shield outer ring
with flanged OR and with flanged OR and da single shield double shield min
max
max
max
open
with flanged outer ring
2
Da
ras
R1-4
RA1-4ZA
ZZA
FLR1-4
FLRA1-4ZA
ZZA
2.8
3.3
5.5
0.08
0.35
0.41
R133 R1-5
RA133ZA RA1-5ZA
ZZA ZZA
FLR133 FLR1-5
FLRA133ZA FLRA1-5ZA
ZZA ZZA
2.9 3.2
3.1 4.3
4 7.1
0.08 0.1
0.12 0.69
0.16 0.76
R144 R2-5 R2-6 R2 RA2
RA144ZA RA2-5Z RA2-6ZA RA2ZA RA2Z
ZZA ZZ ZZA ZZA ZZ
FLR144 FLR2-5 FLR2-6 FLR2 ―
FLRA144ZA FLRA2-5Z FLRA2-6ZA FLRA2ZA ―
ZZA ZZ ZZA ZZA ―
3.9 4 4 4.8 4.8
4.0 4.4 5.2 5.2 5.4
5.5 7 8.7 7.8 11
0.08 0.08 0.1 0.3 0.3
0.27 0.61 0.88 1.3 2.5
0.33 0.68 0.96 1.5 ―
R155
RA155ZA
ZZA
FLR155
FLRA155ZA
ZZA
4.8
5.3
7
0.08
0.54
0.61
R156 R166 R3 RA3
RA156Z R166Z ― RA3Z
ZZ ZZ ― ZZ
FLR156 FLR166 ― FLRA3
FLRA156Z FLRA166Z ― FLRA3Z
ZZ ZZ ― ZZ
5.5 5.6 6.4 6.0
5.6 5.9 7.2 6.4
7 8.7 11 11
0.08 0.08 0.3 0.3
0.44 0.8 2.2 2.4
0.51 0.89 ― 2.7
R168A R188 R4 ―
R168AZ RA188ZA R4Z RA4Z
AZZ ZZA ZZ ZZ
― FLR188 FLR4 ―
FLRA168AZ FLRA188ZA FLR4Z ―
ZZ ZZA ZZ ―
7.1 7.2 8 8.4
7.3 8.2 8.6 9.5
8.7 11.8 14.2 17
0.08 0.1 0.3 0.4
0.6 1.6 4.4 2 11
R6Z
ZZ
FLR6Z
ZZ
11.5
11.9
20.2
0.4
14
―
―
2 This dimension applies to sealed and shielded bearings. 3 Values for double shielded bearings shown.
B-37
j
g
3
0.69 1.7 4.8 ― 3
15
●Miniature and Extra Small Ball Bearings With Ring Grooves, Snap Rings
a f
b rN
r ro
ro
r D D1
D2
d
B
Snap ring groove Shielded type (ZZ)
d 5∼12mm Boundary dimensions dynamic mm 1
Basic load ratings static dynamic static N kgf
Snap ring Shielded type (ZZ)
Limiting speeds rpm
rNa
with snap ring groove shielded type
with snap ring shielded type
grease
oil
44 52
40,000 39,000
47,000 46,000
SC559ZZN SC571ZZN
65 110 137 238
37 45 54 90
40,000 39,000 37,000 34,000
47,000 46,000 44,000 40,000
＊F-SC6A06ZZ1N
SC6A04ZZN SC6A17ZZN SC669ZZN
ZZ1NR ZZNR ZZNR ZZNR
585 1,400
128 340
60 142
35,000 32,000
41,000 37,000
SC890ZZN SC850ZZN
ZZNR ZZNR
4,550
1,960
465
200
29,000
34,000
SC0039ZZN
ZZNR
5,100
2,390
520
204
26,000
30,000
SC0142ZZN
ZZNR
d
D
B
rs min
5
13 14
4 5
0.2 0.2
0.1 0.2
1,080 1,330
430 505
110 135
6
12 13 15 19
4 5 5 6
0.15 0.15 0.2 0.3
0.1 0.1 0.2 0.3
640 1,080 1,350 2,340
365 440 530 885
8
16 22
5 7
0.2 0.3
0.1 0.4
1,260 3,350
10
26
8
0.3
0.3
12
28
8
0.3
0.3
min
Bearing numbers
Cr
Cor
Cr
Cor
1 Smallest allowable dimension for chamfer dimension r. Note: "＊" mark indicates stainless steel is used.
B-38
ZZNR ZZNR
●Miniature and Extra Small Ball Bearings Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa Fr ≦e Fr ＞e e Cor X Y X Y 0.010 0.18 2.46 0.020 0.20 2.14 0.040 0.24 1.83 0.070 0.27 1 0 0.56 1.61 0.10 0.29 1.48 0.15 0.32 1.35 0.20 0.35 1.25 0.30 0.38 1.13 static Por＝0.6Fr＋0.5Fa
CY CZ
r Na
ra ra
DX
Da
da
When Por＜Fr use Por＝Fr
Snap ring groove dimensions
Snap ring dimensions
Abutment and fillet dimensions
Mass
mm
mm
mm
kg
D1
a
b
ro
D2
f
Da
DX
CY
CZ
ras
rNas with snap ring
max
max
min
max
max
max
min
max
max
(approx.)
max
min
max
max
(approx.)
da
12.15 13.03
0.88 1.28
0.55 0.65
0.2 0.06
15.2 16.13
0.55 0.54
6.6 6.6
6.9 7.4
11.4 12.4
15.9 16.9
1.2 1.6
0.6 0.6
0.2 0.2
0.1 0.2
0.002 0.004
11.15 12.15 14.03 17.9
0.78 1.08 1.03 0.93
0.60 0.55 0.65 0.80
0.02 0.2 0.06 0.2
14.2 15.2 17.2 22.0
0.55 0.55 0.60 0.70
7.2 7.0 7.6 8.0
7.9 7.2 7.8 9.5
10.8 11.8 13.4 17.0
14.9 15.9 17.9 22.8
1.1 1.4 1.4 1.4
0.6 0.6 0.7 0.7
0.15 0.15 0.2 0.3
0.1 0.1 0.2 0.3
0.001 0.002 0.004 0.008
14.95 20.8
0.53 2.35
0.65 0.80
0.05 0.2
18.2 24.8
0.54 0.70
9.6 10.0
10.0 12.7
14.4 20
18.9 25.5
0.9 2.8
0.6 0.7
0.2 0.3
0.1 0.4
0.003 0.013
24.5
2.20
0.90
0.3
28.8
0.85
12
13.5
24
29.5
2.8
0.9
0.3
0.3
0.02
26.44
2.20
0.90
0.3
32.7
0.85
14
16
26
33.4
2.8
0.9
0.3
0.3
0.022
B-39
●Angular Contact Ball Bearings
Angular contact ball bearing
High speed use angular contact ball bearing
Ultra high speed use angular
Four-point contact ball
Double row angular contact
contact ball bearing
bearing
ball bearing
1. Design features and special characteristics
Contact angle
1.1 Angular contact ball bearing Angular contact ball bearings are non-separable type bearings. The line connecting the contact points of the ball and inner ring and the ball and outer ring creates an angle with the line drawn in the radial direction called the contact angle. In addition to radial loads, single direction axial loads can also be accommodated by angular contact ball bearings. Furthermore, since an axial load is generated from a radial force, these bearings are generally used in pairs facing each other. Standard type, high speed use type and ultra high speed varieties of angular contact ball bearings are available through NTN, and there are also many duplex varieties. A bearing accuracy of JIS Class 5 or higher is applied to duplex type angular contact ball bearings, and in many cases they are given a preload, in compliance with standard preload levels, before being used in an application. Table 2 shows information concerning angular contact ball bearings, and Table 3 shows similar information for duplex angular contact ball bearings.
Diagram 1.
Table 1 Contact angle and contact angle codes Contact angle
15˚
Code
C
30˚
40˚
A1
B
1 A 30˚contact angle is standard, and therefore the code "A" will usually be omitted.
Table 2 Angular contact ball bearing types and characteristics Type
Design
Characteristics
Standard type
¡Available in bearing series 79, 70, 72, 72B, 73, and 73B. ¡Contact angles: 30˚and 40˚ (with B) available. ¡Standard bearing cage type differs depending on bearing no. (Refer to Table 4)
High speed use
¡Available in bearing series 78C, 79C, 70C, 72C, and 73C. ¡Contact angles: 15˚ ¡All bearing accuracies JIS Class 5 or higher. ¡Standard bearing cage type differs depending on bearing no. (Refer to Table 4)
Ultra high speed use
BNT type
HSB type
¡Available in bearing series HSB9C, HSB0C, BNT0, and BNT2; all boundary dimensions agree with JIS series dimensions. ¡Contact angles: 15˚; HSB type HSB9 and HSB0: 15˚and 30˚. ¡All bearing accuracies JIS Class 5 or higher. ¡BNT type internal design can be altered; suitable for higher speed applications than high speed use bearings. ¡HSB series bearings have smaller diameter of balls than high speed use type bearings, so benefit by less torque for high precision, high speed applications. ¡The inner ring bore diameter and outer ring inner diameter of the HSB series have a ground undercut on one side enabling easy oil flow. ¡For even higher speed applications, there is a bearing in this series equipped with ceramic ball bearings. ¡For standard cage types refer to Table 4; molded resin cages are also available for some varieties.
B-41
●Angular Contact Ball Bearings Table 3 Duplex angular contact ball bearings ― types and characteristics Duplex type Back-to-back duplex (DB) Face-to face duplex (DF)
Characteristics ¡Can accommodate radial loads and axial loads in either direction. ¡Has a large distanceRbetween the acting load center of the bearing, and therefore a large momentary force load capacity. ¡Allowable misalignment angle is small.
r
r
¡Can accommodate radial loads and axial loads in either direction. ¡Has a smaller distanceRbetween the acting load center of the bearing, and therefore a smaller momentary force load capacity. ¡Has a larger allowable misalignment angle than back-to-back duplex type. ¡Can accommodate radial loads and single direction axial loads. ¡Axial loads are received by both bearings as a set, and therefore heavy axial loads can be accommodated.
Tandem duplex (DT)
Note: 1. Duplex bearings are manufactured in a set to specified clearance and preload values, therefore they must be assembled together with identically numbered bearings and not mixed with other arrangements. 2. Triplex arrangements of angular contact bearings are also available. Consult NTN Engineering for details.
loads, axial loads in either direction, and have a high capacity for momentary loads as well. As shown in Diagram 3, sealed and shielded type double row angular contact ball bearings are also available. Standard loads vary from those of open type bearings.
1.2 Four-point angular contact ball bearings Four-point angular contact ball bearings have a contact angle of 30˚ and inner rings which are separated in half. As shown in Diagram 2, when the inner and outer rings receive a radial load the ball bearings contact the inner and outer rings at four points. This construction enables a single bearing to accommodate axial loads from either direction, and when generally under a simple axial load or heavy axial load, the bearing functions in reliance on two contact points like ordinary bearings.
■Flush ground "Flush ground" is the name given to the finishing method shown in Diagram 4 where the offset of the front and back faces of the bearing are ground to the same value. By doing this, a stated clearance or preload value can be achieved by using bearings with identical codes for these values, in other words by combining either DB or DF series bearings. DT series bearings can also be used in various arrangements to achieve uniform load distribution. All BNT type bearings are flush ground, but other angular contact ball bearing series are not. If it is necessary to flush grind any of these other bearings, please consult NTN Engineering.
Diagram 2.
Offset B Back face
Front face
1.3 Double row angular contact ball bearings The structure of double row angular contact ball bearings is designed by arranging two single row angular contact bearings back-to-back in duplex (DB) to form one united bearing with a contact angle of 30˚. These bearings are capable of accommodating radial
Open type
Shielded type (ZZ)
Offset A
A=B Diagram 4.
Non-contact sealed type (LLB) Diagram 3.
B-42
Contact sealed type (LLU)
●Angular Contact Ball Bearings
2. Standard cage types Table 4 lists the standard cage types for angular contact ball bearings. For high speed use angular contact ball bearings, molded resin cages and machined cages are widely used.
Table 4 Standard cages for angular contact ball bearings Type Bearing series
7914 7026 7224 7324 7224B 7324B
∼ 7960 ∼ 7040 ∼ 7240 ∼ 7340 ∼ 7240B ∼ 7340B
― ― ― ― ―
7805C ∼ 7834C 7914C ∼ 7934C 7026C ∼ 7040C 7221C ∼ 7240C 7300C ∼ 7302C 7313C ∼ 7340C
BNT0 BNT2 HSB9C HSB0C
― ― ― HSB010C∼HSB032C
― ― ― ―
BNT000 ∼ BNT009 BNT200 ∼ BNT209 HSB910C ∼ HSB934C HSB034C
QJ2 QJ3
― ―
― ―
QJ208 QJ306
Double row
― 7904C∼7913C 7000C∼7024C 7200C∼7220C 7303C∼7312C
― ― 7200 ∼7222 7300 ∼7322 7200B∼7222B 7300B∼7322B
Machined cage
4-point contact
High speed use
78C 79C 70C 72C 73C
7904∼7913 7000∼7024 ― ― ― ―
Pressed cage
Ultra high speed use
Standard
79 70 72 73 72B 73B
Molded resin cage
52 53
― ―
5200 ∼5218 5302 ∼5315
∼ QJ224 ∼ QJ324
5219，5220 ―
Note: 1. Standard cages for 5S-BNT and 5S-HSB type bearings are the same as cages for BNT and HSB type bearings. 2. Due to the material characteristics of molded resin cages, use at application temperatures in excess of 120℃ is not possible.
B-43
●Single and Duplex Arrangements 2B
B r
ra
r1
r1
ra
r
D
da
Da
d
a
a
Single
a
a
Tandem arrangement (DT)
Face-to-face arrangement (DF)
Back-to-back arrangement (DB)
d 10∼30mm Boundary dimensions
Basic load ratings dynamic
mm
static
dynamic
kN 3
3
Limiting speeds
1
static
kgf
2
Bearing numbers
Load center
rpm
Mass
mm
kg single
a
(approx.)
grease
oil
212 279 257 500 470
29,000 28,000 24,000 26,000 22,000
39,000 37,000 32,000 34,000 29,000
7000 7200 7200B 7300 7300B
9 10.5 13 12 15
0.023 0.029 0.029 0.04 0.041
515 775 715 1,140 1,080
251 405 375 535 505
26,000 25,000 21,000 23,000 19,000
35,000 33,000 28,000 30,000 26,000
7001 7201 7201B 7301 7301B
10 11.5 14 13 16.5
0.025 0.035 0.036 0.044 0.045
3.15 4.70 4.35 7.20 6.65
590 925 855 1,370 1,270
320 480 445 735 680
23,000 22,000 18,000 19,000 17,000
31,000 29,000 25,000 26,000 22,000
7002 7202 7202B 7302 7302B
11.5 12.5 16 15 19
0.035 0.046 0.046 0.055 0.057
7.15 12.0 11.0 15.9 14.8
3.85 6.60 6.10 8.65 8.00
730 1,220 1,120 1,630 1,510
390 675 625 880 820
21,000 19,000 17,000 18,000 15,000
28,000 26,000 22,000 24,000 20,000
7003 7203 7203B 7303 7303B
12.5 14.5 18 16 20.5
0.046 0.064 0.066 0.107 0.109
0.3 0.6 0.6 0.6 0.6
9.70 14.5 13.3 18.7 17.3
5.60 8.40 7.70 10.4 9.65
990 1,480 1,360 1,910 1,770
570 855 785 1,060 985
19,000 17,000 15,000 16,000 13,000
25,000 23,000 20,000 21,000 18,000
7004 7204 7204B 7304 7304B
15 17 21.5 18 22.5
0.08 0.1 0.102 0.138 0.141
0.3 0.6 1 1 1.1 1.1
0.15 0.3 0.6 0.6 0.6 0.6
7.15 10.7 16.2 14.8 26.4 24.4
4.95 6.85 10.3 9.40 15.8 14.6
730 1,100 1,650 1,510 2,690 2,490
505 700 1,050 960 1,610 1,490
17,000 16,000 14,000 12,000 13,000 11,000
22,000 21,000 19,000 16,000 17,000 15,000
7905 7005 7205 7205B 7305 7305B
14 16.5 19 24 21 27
0.05 0.093 0.125 0.129 0.23 0.234
0.3 1
0.15 0.6
7.55 13.9
5.75 9.45
770 1,410
585 965
14,000 13,000
19,000 18,000
7906 7006
15.5 19
0.058 0.135
d
D
B
2B
rs min
rls min
Cr
10
26 30 30 35 35
8 9 9 11 11
16 18 18 22 22
0.3 0.6 0.6 0.6 0.6
0.15 0.3 0.3 0.3 0.3
4.65 5.45 5.00 10.1 9.50
2.07 2.74 2.52 4.95 4.60
470 555 510 1,030 970
12
28 32 32 37 37
8 10 10 12 12
16 20 20 24 24
0.3 0.6 0.6 1 1
0.15 0.3 0.3 0.6 0.6
5.05 7.60 7.00 11.2 10.5
2.46 3.95 3.65 5.25 4.95
15
32 35 35 42 42
9 11 11 13 13
18 22 22 26 26
0.3 0.6 0.6 1 1
0.15 0.3 0.3 0.6 0.6
5.80 9.05 8.35 13.5 12.5
17
35 40 40 47 47
10 12 12 14 14
20 24 24 28 28
0.3 0.6 0.6 1 1
0.15 0.3 0.3 0.6 0.6
20
42 47 47 52 52
12 14 14 15 15
24 28 28 30 30
0.6 1 1 1.1 1.1
25
42 47 52 52 62 62
9 12 15 15 17 17
18 24 30 30 34 34
30
47 55
9 13
18 26
Cor
Cr
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Bearing numbers appended with the code "B" have a contact angle of 40˚; bearings with this code have a contact angle of 30˚. 3 Smallest allowable dimension for chamfer dimension r or r1. B-44
●Single and Duplex Arrangements
r 1a
ra
ra
Equivalent bearing load dynamic Pr＝XFr＋YFa
r1a
Contact angle
Single, DT DB, DF Fa / Fr≦e Fa / Fr＞e Fa / Fr≦e Fa / Fr＞e X Y X Y X Y X Y
e
30˚ 0.80 40˚ 1.14
Db
da
Da
db
1 1
0 0
0.39 0.76 0.35 0.57
1 1
0.78 0.63 1.24 0.55 0.57 0.93
static Por＝Xo Fr＋Yo Fa Contact angle
30˚ 40˚
Single, DT Xo Yo 0.5 0.5
0.33 0.26
DB, DF
Xo 1 1
Yo 0.66 0.52
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
Limiting speeds (duplex) rpm grease
oil
1
Bearing numbers
2
DB
DF
DT
Abutment and fillet dimensions mm Da
da
db
Db
ras
r1as
min
min
max
max
max
max
7.50 8.80 8.10 16.5 15.4
4.15 5.45 5.05 9.85 9.20
765 900 825 1,680 1,570
425 560 515 1,000 940
23,000 22,000 19,000 20,000 18,000
31,000 30,000 26,000 27,000 24,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
12.5 14.5 14.5 14.5 14.5
12.5 12.5 12.5 12.5 12.5
23.5 25.5 25.5 30.5 30.5
24.8 27.5 27.5 32.5 32.5
0.3 0.6 0.6 0.6 0.6
0.15 0.3 0.3 0.3 0.3
8.20 12.3 11.4 18.2 17.1
4.90 7.95 7.35 10.5 9.90
840 1,260 1,160 1,850 1,750
500 810 750 1,070 1,010
21,000 20,000 17,000 18,000 16,000
28,000 26,000 23,000 24,000 21,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
14.5 16.5 16.5 17.5 17.5
14.5 14.5 14.5 16.5 16.5
25.5 27.5 27.5 31.5 31.5
26.8 29.5 29.5 32.5 32.5
0.3 0.6 0.6 1 1
0.15 0.3 0.3 0.6 0.6
9.40 14.7 13.6 21.9 20.3
6.30 9.40 8.70 14.4 13.3
960 1,500 1,390 2,230 2,070
640 960 885 1,470 1,360
18,000 17,000 15,000 15,000 13,000
24,000 23,000 20,000 21,000 18,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
17.5 19.5 19.5 20.5 20.5
17.5 17.5 17.5 19.5 19.5
29.5 30.5 30.5 36.5 36.5
30.8 32.5 32.5 37.5 37.5
0.3 0.6 0.6 1 1
0.15 0.3 0.3 0.6 0.6
11.6 19.4 17.9 25.9 24.0
7.65 13.2 12.2 17.3 16.0
1,190 1,980 1,830 2,640 2,450
780 1,350 1,250 1,760 1,640
17,000 15,000 13,000 14,000 12,000
22,000 21,000 18,000 19,000 16,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
19.5 21.5 21.5 22.5 22.5
19.5 19.5 19.5 21.5 21.5
32.5 35.5 35.5 41.5 41.5
33.8 37.5 37.5 42.5 42.5
0.3 0.6 0.6 1 1
0.15 0.3 0.3 0.6 0.6
15.8 23.6 21.6 30.5 28.2
11.2 16.8 15.4 20.8 19.3
1,610 2,400 2,200 3,100 2,870
1,140 1,710 1,570 2,130 1,970
15,000 14,000 12,000 12,000 11,000
20,000 18,000 16,000 17,000 14,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
24.5 25.5 25.5 27 27
24.5 24.5 24.5 24.5 24.5
37.5 41.5 41.5 45 45
39.5 42.5 42.5 47.5 47.5
0.6 1 1 1 1
0.3 0.6 0.6 0.6 0.6
11.6 17.5 26.3 24.0 43.0 39.5
9.95 13.7 20.6 18.8 31.5 29.3
1,180 1,780 2,690 2,450 4,400 4,050
1,010 1,400 2,100 1,920 3,250 2,980
13,000 12,000 11,000 10,000 10,000 9,100
18,000 17,000 15,000 13,000 14,000 12,000
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
27.5 29.5 30.5 30.5 32 32
27.5 29.5 29.5 29.5 29.5 29.5
39.5 42.5 46.5 46.5 55 55
40.8 44.5 47.5 47.5 57.5 57.5
0.3 0.6 1 1 1 1
0.15 0.3 0.6 0.6 0.6 0.6
12.3 22.5
11.5 18.9
1,250 2,300
1,170 1,930
12,000 11,000
15,000 14,000
DB DB
DF DF
DT DT
32.5 35.5
32.5 35.5
44.5 49.5
45.8 50.5
0.3 1
0.15 0.6
Note: For bearing series 79 and 70, inner rings are constructed with groove abutments on both sides. Therefore, the inner ring chamfer dimension r1 is identical to dimension r. Furthermore, the radius r1a of the shaft corner roundness is likewise identical to ra.
B-45
●Single and Duplex Arrangements 2B
B r
ra
r1
r1
ra
r
D
da
Da
d
a
a
Single
a
a
Tandem arrangement (DT)
Face-to-face arrangement (DF)
Back-to-back arrangement (DB)
d 30∼55mm Boundary dimensions
Basic load ratings dynamic
mm
static
dynamic
kN 3
3
Limiting speeds
1
static
kgf
2
Bearing numbers
rpm
Load center
Mass
mm
kg single
a
(approx.)
grease
oil
1,510 1,380 2,280 2,090
12,000 11,000 11,000 9,600
16,000 14,000 15,000 13,000
7206 7206B 7306 7306B
21.5 27.5 24.5 31.5
0.193 0.197 0.345 0.352
1,220 1,790 3,050 2,760 4,050 3,750
905 1,280 2,050 1,870 2,680 2,470
13,000 12,000 11,000 9,300 9,800 8,400
17,000 16,000 14,000 12,000 13,000 11,000
7907 7007 7207 7207B 7307 7307B
18 21 24 31 27 34.5
0.088 0.18 0.281 0.287 0.462 0.469
10.2 14.6 25.1 23.0 33.0 30.5
1,290 1,910 3,600 3,250 5,000 4,550
1,040 1,490 2,560 2,340 3,350 3,100
11,000 10,000 9,600 8,300 8,600 7,400
15,000 14,000 13,000 11,000 12,000 9,900
7908 7008 7208 7208B 7308 7308B
20.5 23 26.5 34 30.5 39
0.13 0.222 0.355 0.375 0.625 0.636
15.7 22.3 39.5 36.0 63.5 58.5
12.9 17.7 28.7 26.2 44.0 40.0
1,600 2,270 4,050 3,650 6,450 5,950
1,310 1,800 2,930 2,680 4,500 4,100
10,000 9,500 8,700 7,400 7,800 6,600
14,000 13,000 12,000 9,900 10,000 8,900
7909 7009 7209 7209B 7309 7309B
22.5 25.5 28.5 37 33.5 43.0
0.15 0.282 0.404 0.41 0.837 0.854
0.3 0.6 0.6 0.6 1 1
16.6 23.7 41.5 37.5 74.0 68.0
14.5 20.1 31.5 28.6 52.0 48.0
1,690 2,410 4,200 3,800 7,600 6,950
1,470 2,050 3,200 2,920 5,350 4,950
9,200 8,600 7,900 6,700 7,100 6,000
12,000 11,000 10,000 9,000 9,400 8,100
7910 7010 7210 7210B 7310 7310B
23.5 27 30 39.5 36.5 47
0.157 0.306 0.457 0.466 1.09 1.11
0.6 0.6 1 1 1 1
17.3 31.0 51.0 46.5 86.0 79.0
16.1 26.3 39.5 36.0 61.5 56.5
1,770 3,150 5,200 4,700 8,750 8,050
1,640 2,680 4,050 3,700 6,300 5,800
8,400 7,900 7,100 6,100 6,400 5,500
11,000 11,000 9,500 8,200 8,600 7,300
7911 7011 7211 7211B 7311 7311B
26 30 33 43 40 52
0.214 0.447 0.6 0.612 1.39 1.42
d
D
B
2B
rs min
rls min
Cr
Cor
30
62 62 72 72
16 16 19 19
32 32 38 38
1 1 1.1 1.1
0.6 0.6 0.6 0.6
22.5 20.5 33.5 31.0
14.8 13.5 22.3 20.5
2,300 2,090 3,450 3,150
35
55 62 72 72 80 80
10 14 17 17 21 21
20 28 34 34 42 42
0.6 1 1.1 1.1 1.5 1.5
0.3 0.6 0.6 0.6 1 1
12.0 17.5 29.7 27.1 40.0 36.5
8.85 12.6 20.1 18.4 26.3 24.2
40
62 68 80 80 90 90
12 15 18 18 23 23
24 30 36 36 46 46
0.6 1 1.1 1.1 1.5 1.5
0.3 0.6 0.6 0.6 1 1
12.7 18.8 35.5 32.0 49.0 45.0
45
68 75 85 85 100 100
12 16 19 19 25 25
24 32 38 38 50 50
0.6 1 1.1 1.1 1.5 1.5
0.3 0.6 0.6 0.6 1 1
50
72 80 90 90 110 110
12 16 20 20 27 27
24 32 40 40 54 54
0.6 1 1.1 1.1 2 2
55
80 90 100 100 120 120
13 18 21 21 29 29
26 36 42 42 58 58
1 1.1 1.5 1.5 2 2
Cr
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Bearing numbers appended with the code "B" have a contact angle of 40˚; bearings with this code have a contact angle of 30˚. 3 Minimal allowable dimension for chamfer dimension r or r1. B-46
●Single and Duplex Arrangements
r 1a
ra
ra
Equivalent bearing load dynamic Pr＝XFr＋YFa
r1a
Contact angle
Single, DT DB, DF Fa / Fr≦e Fa / Fr＞e Fa / Fr≦e Fa / Fr＞e X Y X Y X Y X Y
e
30˚ 0.80 40˚ 1.14
Db
da
Da
db
1 1
0 0
0.39 0.76 0.35 0.57
1 1
0.78 0.63 1.24 0.55 0.57 0.93
static Por＝Xo Fr＋Yo Fa Contact angle
30˚ 40˚
Single, DT Xo Yo 0.5 0.5
0.33 0.26
DB, DF
Xo
Yo 0.66 0.52
1 1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
Limiting speeds (duplex) rpm grease
oil
1
Bearing numbers
2
DB
DF
DT
Abutment and fillet dimensions mm Da
da
db
Db
ras
r1as
min
min
max
max
max
max
36.5 33.5 54.5 50.0
29.6 27.1 44.5 41.0
3,750 3,400 5,550 5,100
3,000 2,760 4,550 4,200
9,800 8,600 8,900 7,700
13,000 11,000 12,000 10,000
DB DB DB DB
DF DF DF DF
DT DT DT DT
35.5 35.5 37 37
34.5 34.5 34.5 34.5
56.5 56.5 65 65
57.5 57.5 67.5 67.5
1 1 1 1
0.6 0.6 0.6 0.6
19.5 28.5 48.5 44.0 65.0 59.5
17.7 25.1 40.0 36.5 52.5 48.5
1,990 2,900 4,900 4,500 6,600 6,100
1,810 2,560 4,100 3,750 5,350 4,950
10,000 9,400 8,600 7,500 7,800 6,800
13,000 13,000 11,000 10,000 10,000 9,000
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
39.5 40.5 42 42 43.5 43.5
39.5 40.5 39.5 39.5 40.5 40.5
50.5 56.5 65 65 71.5 71.5
52.5 57.5 67.5 67.5 74.5 74.5
0.6 1 1 1 1.5 1.5
0.3 0.6 0.6 0.6 1 1
20.6 30.5 57.5 52.0 79.5 73.0
20.4 29.2 50.5 46.0 66.0 60.5
2,100 3,100 5,850 5,300 8,100 7,400
2,080 2,970 5,150 4,700 6,700 6,200
9,000 8,300 7,700 6,700 6,900 6,000
12,000 11,000 10,000 8,900 9,200 8,000
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
44.5 45.5 47 47 48.5 48.5
44.5 45.5 44.5 44.5 45.5 45.5
57.5 62.5 73.0 73 81.5 81.5
59.5 63.5 75.5 75.5 84.5 84.5
0.6 1 1 1 1.5 1.5
0.3 0.6 0.6 0.6 1 1
25.5 36.0 64.5 58.5 103 95.0
25.7 35.5 57.5 52.5 88.0 80.5
2,600 3,700 6,550 5,950 10,500 9,650
2,620 3,600 5,850 5,350 8,950 8,250
8,100 7,500 6,900 6,000 6,200 5,400
11,000 10,000 9,200 8,000 8,200 7,200
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
49.5 50.5 52 52 53.5 53.5
49.5 50.5 49.5 49.5 50.5 50.5
63.5 69.5 78 78 91.5 91.5
65.5 70.5 80.5 80.5 94.5 94.5
0.6 1 1 1 1.5 1.5
0.3 0.6 0.6 0.6 1 1
27.0 38.5 67.0 60.5 121 111
28.9 40.0 63.0 57.0 105 96.0
2,750 3,900 6,850 6,200 12,300 11,300
2,950 4,100 6,400 5,850 10,700 9,850
7,300 6,800 6,300 5,500 5,600 4,900
9,800 9,100 8,300 7,300 7,500 6,500
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
54.5 55.5 57 57 60 60
54.5 67.5 69.5 55.5 74.5 75.5 54.5 83 85.5 54.5 83 85.5 55.5 100 104.5 55.5 100 104.5
0.6 1 1 1 2 2
0.3 0.6 0.6 0.6 1 1
28.1 50.5 83.0 75.0 139 128
32.0 52.5 79.0 72.0 123 113
2,870 5,150 8,450 7,650 14,200 13,000
3,300 5,350 8,050 7,350 12,600 11,600
6,700 6,300 5,700 5,000 5,100 4,500
8,900 8,400 7,600 6,600 6,800 5,900
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
60.5 62 63.5 63.5 65 65
60.5 74.5 75.5 62 83 85.5 60.5 91.5 94.5 60.5 91.5 94.5 60.5 110 114.5 60.5 110 114.5
1 1 1.5 1.5 2 2
0.6 0.6 1 1 1 1
Note: For bearing series 79 and 70, inner rings are constructed with groove abutments on both sides. Therefore, the inner ring chamfer dimension r1 is identical to dimension r. Furthermore, the radius r1a of the shaft corner roundness is, likewise, identical to ra.
B-47
●Single and Duplex Arrangements
d 60∼85mm Boundary dimensions
Basic load ratings dynamic
mm d
static
dynamic
kN 3
3
Limiting speeds
1
static
kgf
2
Bearing numbers
rpm
Load center
Mass
mm
kg single
a
(approx.)
grease
oil
1,780 2,860 5,000 4,550 7,300 6,700
7,800 7,200 6,600 5,700 5,900 5,100
10,000 9,600 8,800 7,600 7,900 6,800
7912 7012 7212 7212B 7312 7312B
27.5 31.5 36 47.5 43 56
0.23 0.478 0.765 0.78 1.74 1.77
1,860 3,450 7,150 6,500 11,300 10,400
1,840 3,200 5,900 5,350 8,350 7,700
7,200 6,700 6,100 5,200 5,500 4,700
9,600 9,000 8,100 7,000 7,300 6,300
7913 7013 7213 7213B 7313 7313B
29 33 38 50.5 46 59.5
0.245 0.509 0.962 0.981 2.11 2.15
2,670 4,350 7,800 7,050 12,700 11,700
2,670 4,000 6,500 5,900 9,550 8,800
6,700 6,200 5,700 4,900 5,100 4,400
9,000 8,300 7,600 6,500 6,800 5,800
7914 7014 7214 7214B 7314 7314B
32.5 36 40 53 49.5 63.5
0.397 0.705 1.09 1.11 2.56 2.61
26.50 27.1 43.50 41.5 79.0 68.5 71.5 62.0 136 106 125. 97.5
2,710 2,760 4,450 4,250 8,050 7,000 7,300 6,350 13,800 10,800 12,700 9,900
6,300 5,800 5,300 4,500 4,800 4,100
8,400 7,800 7,100 6,000 6,300 5,400
7915 7015 7215 7215B 7315 7315B
34 37.5 42.5 56 52.5 68
0.42 0.745 1.17 1.19 3.07 3.13
0.6 0.6 1 1 1.1 1.1
26.9 53.5 89.0 80.5 147 135
28.0 50.5 76.0 69.5 119 109
2,740 2,860 5,450 5,150 9,100 7,750 8,200 7,050 15,000 12,100 13,800 11,100
5,900 5,500 5,000 4,300 4,500 3,800
7,800 7,300 6,600 5,700 5,900 5,100
7916 7016 7216 7216B 7316 7316B
35.5 40.5 45 59 55.5 72
0.444 0.994 1.39 1.42 3.65 3.72
0.6 0.6 1 1
36.0 54.5 99.5 90.0
38.0 53.5 88.5 80.5
3,700 5,600 10,100 9,150
5,500 5,100 4,700 4,000
7,400 6,900 6,200 5,300
7917 7017 7217 7217B
38.5 42 48 63.5
0.628 1.04 1.78 1.82
D
B
2B
rs min
rls min
Cr
Cor
Cr
60
85 95 110 110 130 130
13 18 22 22 31 31
26 36 44 44 62 62
1 1.1 1.5 1.5 2.1 2.1
0.6 0.6 1 1 1.1 1.1
18.1 32.0 61.5 56.0 98.0 90.0
17.4 28.1 49.0 44.5 71.5 66.0
1,840 3,250 6,300 5,700 10,000 9,200
65
90 100 120 120 140 140
13 18 23 23 33 33
26 36 46 46 66 66
1 1.1 1.5 1.5 2.1 2.1
0.6 0.6 1 1 1.1 1.1
18.3 33.5 70.5 63.5 111 102
18.0 31.5 58.0 52.5 82.0 75.0
70
100 110 125 125 150 150
16 20 24 24 35 35
32 40 48 48 70 70
1 1.1 1.5 1.5 2.1 2.1
0.6 0.6 1 1 1.1 1.1
26.2 42.5 76.5 69.0 125 114
26.2 39.5 63.5 58.0 93.5 86
75
105 115 130 130 160 160
16 20 25 25 37 37
32 40 50 50 74 74
1 1.1 1.5 1.5 2.1 2.1
0.6 0.6 1 1 1.1 1.1
80
110 125 140 140 170 170
16 22 26 26 39 39
32 44 52 52 78 78
1 1.1 2 2 2.1 2.1
85
120 130 150 150
18 22 28 28
36 44 56 56
1.1 1.1 2 2
Cor
3,850 5,450 9,050 8,200
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Bearing numbers appended with the code "B" have a contact angle of 40˚; bearings with this code have a contact angle of 30˚. 3 Minimal allowable dimension for chamfer dimension r or r1. B-48
●Single and Duplex Arrangements
r 1a
ra
ra
Equivalent bearing load dynamic Pr＝XFr＋YFa
r1a
Contact angle
Single, DT DB, DF Fa / Fr≦e Fa / Fr＞e Fa / Fr≦e Fa / Fr＞e X Y X Y X Y X Y
e
30˚ 0.80 40˚ 1.14
Db
da
Da
db
1 1
0 0
0.39 0.76 0.35 0.57
1 1
0.78 0.63 1.24 0.55 0.57 0.93
static Por＝Xo Fr＋Yo Fa Contact angle
30˚ 40˚
Single, DT Xo Yo 0.5 0.5
0.33 0.26
DB, DF
Xo
Yo 0.66 0.52
1 1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
Limiting speeds (duplex) rpm grease
oil
1
Bearing numbers
2
DB
DF
DT
Abutment and fillet dimensions
da
db
min
min
mm Da max
Db
ras
r1as
max
max
max
29.3 52.0 100 91.0 159 146
35.0 56.0 98.0 89.0 143 132
2,990 5,300 10,200 9,250 16,200 14,900
3,550 5,700 10,000 9,100 14,600 13,400
6,200 5,800 5,300 4,600 4,700 4,100
8,300 7,700 7,000 6,100 6,300 5,500
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
65.5 67 68.5 68.5 72 72
65.5 67 65.5 65.5 67 67
79.5 88 101.5 101.5 118 118
80.5 90.5 104.5 104.5 123 123
1 1 1.5 1.5 2 2
0.6 0.6 1 1 1 1
29.7 55.0 114 103 180 166
36.0 62.5 116 105 164 151
3,050 5,600 11,600 10,500 18,400 16,900
3,700 6,400 11,800 10,700 16,700 15,400
5,700 5,400 4,900 4,200 4,400 3,800
7,600 7,100 6,500 5,600 5,800 5,100
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
70.5 72 73.5 73.5 77 77
70.5 72 70.5 70.5 72 72
84.5 93 111.5 111.5 128 128
85.5 95.5 114.5 114.5 133 133
1 1 1.5 1.5 2 2
0.6 0.6 1 1 1 1
42.5 69.5 124 112 203 186
52.5 78.5 127 116 187 172
4,350 7,050 12,600 11,500 20,700 19,000
5,350 8,050 13,000 11,800 19,100 17,600
5,300 5,000 4,500 3,900 4,100 3,500
7,100 6,600 6,000 5,200 5,400 4,700
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
75.5 77 78.5 78.5 82 82
75.5 77 75.5 75.5 77 77
94.5 103 116.5 116.5 138 138
95.5 105.5 119.5 119.5 143 143
1 1 1.5 1.5 2 2
0.6 0.6 1 1 1 1
43.0 71.0 128 116 221 202
54.0 83.5 137 124 212 195
4,400 7,250 13,100 11,800 22,500 20,600
5,500 8,500 14,000 12,700 21,600 19,800
5,000 4,600 4,200 3,700 3,800 3,300
6,700 6,200 5,600 4,900 5,000 4,400
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
80.5 82 83.5 83.5 87 87
80.5 82 80.5 80.5 82 82
99.5 108 121.5 121.5 148 148
100.5 110.5 124.5 124.5 153 153
1 1 1.5 1.5 2 2
0.6 0.6 1 1 1 1
43.5 86.5 145 131 239 219
56.0 101 152 139 238 218
4,450 8,850 14,700 13,300 24,400 22,300
5,700 10,300 15,500 14,100 24,200 22,300
4,700 4,400 3,900 3,400 3,500 3,100
6,200 5,800 5,300 4,600 4,700 4,100
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
85.5 87 90 90 92 92
85.5 87 85.5 85.5 87 87
104.5 118 130 130 158 158
105.5 120.5 134.5 134.5 163 163
1 1 2 2 2 2
0.6 0.6 1 1 1 1
59.0 89.0 162 146
76.0 107 177 161
6,000 9,050 16,500 14,900
7,750 10,900 18,100 16,400
4,400 4,100 3,700 3,200
5,900 5,500 5,000 4,300
DB DB DB DB
DF DF DF DF
DT DT DT DT
92 92 95 95
92 92 90.5 90.5
113 123 140 140
115.5 125.5 144.5 144.5
1 1 2 2
0.6 0.6 1 1
Note: For bearing series 79 and 70, inner rings are constructed with groove abutments on both sides. Therefore, the inner ring chamfer dimension r1 is identical to dimension r. Furthermore, the radius r1a of the shaft corner roundness is, likewise, identical to ra.
B-49
●Single and Duplex Arrangements 2B
B r
ra
r1
r1
ra
r
D
da
Da
d
a
a
Single
a
a
Tandem arrangement (DT)
Face-to-face arrangement (DF)
Back-to-back arrangement (DB)
d 85∼120mm Boundary dimensions
Basic load ratings dynamic
mm d
static
dynamic
kN 3
3
Limiting speeds
1
static
kgf
2
Bearing numbers
rpm grease
oil
Load center
Mass
mm
kg single
a
(approx.)
D
B
2B
rs min
rls min
85
180 180
41 41
82 82
3 3
1.1 1.1
159 146
133 122
16,200 13,500 14,800 12,400
4,200 3,600
5,600 4,800
7317 7317B
59 76
4.34 4.43
90
125 140 160 160 190 190
18 24 30 30 43 43
36 48 60 60 86 86
1.1 1.5 2.0 2.0 3.0 3.0
0.6 1 1 1 1.1 1.1
36.0 65.0 118 107 171 156
38.0 63.5 103 94.0 147 135
3,650 3,850 6,650 6,450 12,000 10,500 10,900 9,550 17,400 15,000 15,900 13,800
5,200 4,900 4,400 3,800 4,000 3,400
7,000 6,500 5,900 5,000 5,300 4,500
7918 7018 7218 7218B 7318 7318B
40 45 51 67.5 62 80.5
0.658 1.35 2.18 2.22 5.06 5.16
95
130 145 170 170 200 200
18 24 32 32 45 45
36 48 64 64 90 90
1.1 1.5 2.1 2.1 3 3
0.6 1 1.1 1.1 1.1 1.1
37.0 67.0 133 121 183 167
40.5 67.0 118 107 162 149
3,800 6,800 13,600 12,300 18,600 17,100
4,150 6,800 12,000 11,000 16,600 15,200
5,000 4,600 4,100 3,500 3,700 3,200
6,600 6,100 5,500 4,700 5,000 4,200
7919 7019 7219 7219B 7319 7319B
41.5 46.5 54.5 71.5 65 84.5
0.688 1.41 2.67 2.72 5.89 6
100
140 150 180 180 215 215
20 24 34 34 47 47
40 48 68 68 94 94
1.1 1.5 2.1 2.1 3 3
0.6 1 1.1 1.1 1.1 1.1
48.0 68.5 144 130 207 190
52.5 70.5 126 114 193 178
4,900 6,950 14,700 13,300 21,100 19,400
5,350 7,200 12,800 11,700 19,700 18,100
4,700 4,400 3,900 3,400 3,500 3,000
6,200 5,800 5,200 4,500 4,700 4,000
7920 7020 7220 7220B 7320 7320B
44.5 48 57.5 76 69 89.5
0.934 1.47 3.2 3.26 7.18 7.32
105
145 160 190 190 225 225
20 26 36 36 49 49
40 52 72 72 98 98
1.1 2 2.1 2.1 3 3
0.6 1 1.1 1.1 1.1 1.1
48.5 80.0 157 142 220 202
54.5 81.5 142 129 210 194
4,950 8,150 16,000 14,500 22,400 20,600
5,550 8,350 14,400 13,100 21,500 19,700
4,400 4,100 3,700 3,200 3,400 2,900
5,900 5,500 5,000 4,300 4,500 3,800
7921 7021 7221 7221B 7321 7321B
46 51.5 60.5 80 72 93.5
0.972 1.86 3.79 3.87 8.2 8.36
110
150 170 200 200 240 240
20 28 38 38 50 50
40 56 76 76 100 100
1.1 2 2.1 2.1 3 3
0.6 1 1.1 1.1 1.1 1.1
49.5 92.0 170 154 246 226
56.0 93.0 158 144 246 226
5,050 9,350 17,300 15,700 25,100 23,000
5,700 9,450 16,100 14,700 25,100 23,100
4,200 3,900 3,500 3,000 3,200 2,700
5,700 5,300 4,700 4,000 4,300 3,700
7922 7022 7222 7222B 7322 7322B
47.5 54.5 64 84 76 99
1.01 2.3 4.45 4.54 9.6 9.8
165
22
44
1.1
0.6
61.0
69.5
6,200
7,100
3,900
5,200
7924
52
1.66
120
Cr
Cor
Cr
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Bearing numbers appended with the code "B" have a contact angle of 40˚; bearings with this code have a contact angle of 30˚. 3 Minimal allowable dimension for chamfer dimension r or r1. B-50
●Single and Duplex Arrangements
r 1a
ra
ra
Equivalent bearing load dynamic Pr＝XFr＋YFa
r1a
Contact angle
Single, DT DB, DF Fa / Fr≦e Fa / Fr＞e Fa / Fr≦e Fa / Fr＞e X Y X Y X Y X Y
e
30˚ 0.80 40˚ 1.14
Db
da
Da
db
1 1
0 0
0.39 0.76 0.35 0.57
1 1
0.78 0.63 1.24 0.55 0.57 0.93
static Por＝Xo Fr＋Yo Fa Contact angle
30˚ 40˚
Single, DT Xo Yo 0.5 0.5
0.33 0.26
DB, DF
Xo
Yo 0.66 0.52
1 1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
Limiting speeds (duplex) rpm grease
oil
1
Bearing numbers
2
DB
DF
DT
Abutment and fillet dimensions
da
db
min
min
258 236
265 244
26,300 24,100
27,000 24,900
3,300 2,900
4,500 3,900
DB DB
DF DF
DT DT
99 99
58.0 106 191 173 277 254
75.5 127 206 188 294 270
5,900 10,800 19,500 17,700 28,300 25,900
7,700 12,900 21,000 19,100 30,000 27,600
4,200 3,900 3,500 3,100 3,200 2,700
5,500 5,200 4,700 4,100 4,200 3,700
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
60.5 109 217 196 297 272
81.5 134 236 215 325 298
6,150 11,100 22,100 20,000 30,500 27,700
8,300 13,600 24,100 21,900 33,000 30,500
3,900 3,700 3,300 2,900 3,000 2,600
5,300 4,900 4,400 3,800 3,900 3,400
DB DB DB DB DB DB
DF DF DF DF DF DF
78.0 111 233 212 335 310
105 141 251 229 385 355
7,950 11,300 23,800 21,600 34,500 31,500
10,700 14,400 25,600 23,300 39,500 36,000
3,700 3,500 3,100 2,700 2,800 2,400
5,000 4,600 4,200 3,600 3,700 3,300
DB DB DB DB DB DB
79.0 130 254 231 355 330
109 163 283 258 420 385
8,050 13,300 25,900 23,500 36,500 33,500
11,100 16,700 28,900 26,300 43,000 39,500
3,500 3,300 3,000 2,600 2,700 2,300
4,700 4,400 4,000 3,500 3,600 3,100
80.0 149 276 250 400 365
112 186 315 289 490 455
8,150 15,200 28,100 25,500 41,000 37,500
11,400 18,900 32,500 29,400 50,000 46,000
3,400 3,100 2,800 2,500 2,600 2,200
99.0
139
10,100
14,200
3,100
mm Da max
Db
ras
r1as
max
max
max
92 92
166 166
173 173
2.5 2.5
1 1
97 98.5 100 100 104 104
97 98.5 95.5 95.5 97 97
118 131.5 150 150 176 176
120.5 134.5 154.5 154.5 183 183
1 1.5 2 2 2.5 2.5
0.6 1 1 1 1 1
DT DT DT DT DT DT
102 103.5 107 107 109 109
102 103.5 102 102 102 102
123 136.5 158 158 186 186
125.5 139.5 163 163 193 193
1 1.5 2 2 2.5 2.5
0.6 1 1 1 1 1
DF DF DF DF DF DF
DT DT DT DT DT DT
107 108.5 112 112 114 114
107 108.5 107 107 107 107
133 141.5 168 168 201 201
135.5 144.5 173 173 208 208
1 1.5 2 2 2.5 2.5
0.6 1 1 1 1 1
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
112 115 117 117 119 119
112 115 112 112 112 112
138 150 178 178 211 211
140.5 154.5 183 183 218 218
1 2 2 2 2.5 2.5
0.6 1 1 1 1 1
4,500 4,200 3,800 3,300 3,400 3,000
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
117 120 122 122 124 124
117 120 117 117 117 117
143 160 188 188 226 226
145.5 164.5 193 193 233 233
1 2 2 2 2.5 2.5
0.6 1 1 1 1 1
4,100
DB
DF
DT
127
127
158
160.5
1
0.6
Note: For bearing series 79 and 70, inner rings are constructed with groove abutments on both sides. Therefore, the inner ring chamfer dimension r1 is identical to dimension r. Furthermore, the radius r1a of the shaft corner roundness is, likewise, identical to ra.
B-51
●Single and Duplex Arrangements 2B
B r
ra
r1
r
ra
r
D
a
a
a
a
Face-to-face arrangement (DF)
Back-to-back arrangement (DB)
Single
da
Da
d
Tandem arrangement (DT)
d 120∼170mm Boundary dimensions
Basic load ratings dynamic
mm d
static
dynamic
kN 2
2
Limiting speeds static
kgf
1
Bearing numbers
Load center
rpm
mm
kg single
a
(approx.)
Cr
Cor
grease
98.5 177 162 252 231
9,550 18,600 16,900 25,100 23,000
10,000 18,100 16,500 25,700 23,600
3,600 3,200 2,800 2,900 2,500
4,800 4,300 3,700 3,900 3,300
7024 7224 7224B 7324 7324B
57.5 68.5 90.5 82.5 107
2.47 6.26 6.26 14.7 14.7
75.0 117 196 177 273 250
87.5 125 198 180 293 268
7,650 12,000 20,000 18,100 27,900 25,500
8,900 12,800 20,200 18,300 29,800 27,400
3,600 3,300 3,000 2,500 2,700 2,300
4,700 4,400 4,000 3,400 3,600 3,100
7926 7026 7226 7226B 7326 7326B
56.5 64 72 95.5 88 115
1.82 3.73 7.15 7.15 17.6 17.6
1 1 1.1 1.1 1.5 1.5
75.5 120 203 183 300 275
90.0 133 215 195 335 310
7,700 12,200 20,700 18,700 30,500 28,100
9,150 13,500 21,900 19,900 34,500 31,500
3,300 3,100 2,700 2,300 2,500 2,100
4,400 4,100 3,600 3,100 3,300 2,800
7928 7028 7228 7228B 7328 7328B
59.5 67 77.5 103 94.5 123
1.94 3.96 8.78 8.78 21.5 21.5
2 2.1 3 3 4 4
1 1.1 1.1 1.1 1.5 1.5
97.5 137 232 210 330 300
117 154 259 235 380 350
9,900 14,000 23,700 21,400 33,500 30,500
11,900 15,700 26,400 24,000 39,000 36,000
3,100 2,800 2,500 2,200 2,300 2,000
4,100 3,800 3,400 2,900 3,100 2,600
7930 7030 7230 7230B 7330 7330B
66 71.5 83 111 100 131
2.96 4.82 11 11 25.1 25.1
56 76 96 96 136 136
2 2.1 3 3 4 4
1 1.1 1.1 1.1 1.5 1.5
98.5 155 263 238 345 315
121 176 305 279 420 385
10,000 15,800 26,800 24,200 35,500 32,000
12,300 18,000 31,500 28,400 43,000 39,500
2,800 2,700 2,400 2,000 2,100 1,800
3,800 3,600 3,200 2,700 2,800 2,400
7932 7032 7232 7232B 7332 7332B
69 77 89 118 106 139
3.13 5.96 13.7 13.7 29.8 29.8
56 84 104 104 144
2 2.1 4 4 4
1 1.1 1.5 1.5 1.5
102 186 295 266 390
129 214 360 325 485
10,400 18,900 30,000 27,200 39,500
13,100 21,900 36,500 33,000 49,500
2,700 2,500 2,200 1,900 2,000
3,600 3,300 3,000 2,500 2,700
7934 7034 7234 7234B 7334
71.5 83 95.5 127 113
3.29 7.96 17 17 35.3
D
B
2B
rs min
rls min
120
180 215 215 260 260
28 40 40 55 55
56 80 80 110 110
2 2.1 2.1 3 3
1 1.1 1.1 1.1 1.1
93.5 183 165 246 225
130
180 200 230 230 280 280
24 33 40 40 58 58
48 66 80 80 116 116
1.5 2 3 3 4 4
1 1 1.1 1.1 1.5 1.5
140
190 210 250 250 300 300
24 33 42 42 62 62
48 66 84 84 124 124
1.5 2 3 3 4 4
150
210 225 270 270 320 320
28 35 45 45 65 65
56 70 90 90 130 130
160
220 240 290 290 340 340
28 38 48 48 68 68
170
230 260 310 310 360
28 42 52 52 72
Cr
Cor
oil
Mass
1 Bearing numbers appended with the code "B" have a contact angle of 40˚; bearings with this code have a contact angle of 30˚. 2 Smallest allowable dimension for chamfer dimension r.
B-52
●Single and Duplex Arrangements
r 1a
ra
Equivalent bearing load dynamic Pr＝XFr＋YFa
ra
r1a
Contact angle
Db
da
Da
Single, DT DB, DF Fa / Fr≦e Fa / Fr＞e Fa / Fr≦e Fa / Fr＞e X Y X Y X Y X Y
e
30˚ 0.80 40˚ 1.14
da
1 1
0 0
0.39 0.76 0.35 0.57
1 1
0.78 0.63 1.24 0.55 0.57 0.93
static Por＝Xo Fr＋Yo Fa Contact angle
30˚ 40˚
Single, DT Xo Yo 0.5 0.5
0.33 0.26
DB, DF
Xo
Yo 0.66 0.52
1 1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
Limiting speeds (duplex) rpm grease
oil
Bearing numbers
1
DB
DF
DT
Abutment and fillet dimensions
da
Da
mm Db
ras
r1as
min
max
max
max
max
152 297 269 400 365
197 355 325 505 460
15,500 30,500 27,400 41,000 37,500
20,100 36,000 33,000 51,500 47,000
2,900 2,600 2,300 2,300 2,000
3,800 3,400 3,000 3,100 2,700
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
130 132 132 134 134
170 203 203 246 246
174.5 208 208 253 253
2 2 2 2.5 2.5
1 1 1 1 1
121 191 320 288 445 405
175 251 395 360 585 535
12,400 19,400 32,500 29,400 45,500 41,500
17,800 25,600 40,500 36,500 59,500 54,500
2,800 2,600 2,400 2,100 2,100 1,900
3,800 3,500 3,100 2,700 2,800 2,500
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
138.5 140 144 144 148 148
171.5 190 216 216 262 262
174.5 194.5 223 223 271.5 271.5
1.5 2 2.5 2.5 3 3
1 1 1 1 1.5 1.5
123 194 330 297 490 445
180 265 430 390 670 615
12,500 19,800 33,500 30,500 50,000 45,500
18,300 27,000 44,000 40,000 68,500 63,000
2,600 2,400 2,200 1,900 2,000 1,700
3,500 3,300 2,900 2,500 2,600 2,300
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
148.5 150 154 154 158 158
181.5 200 236 236 282 282
184.5 204.5 243 243 291.5 291.5
1.5 2 2.5 2.5 3 3
1 1 1 1 1.5 1.5
158 222 375 340 535 490
234 305 515 470 765 700
16,100 22,700 38,500 34,500 54,500 50,000
23,900 31,500 53,000 48,000 78,000 71,500
2,400 2,300 2,000 1,800 1,800 1,600
3,300 3,000 2,700 2,400 2,400 2,100
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
160 162 164 164 168 168
200 213 256 256 302 302
204.5 218 263 263 311.5 311.5
2 2 2.5 2.5 3 3
1 1 1 1 1.5 1.5
160 252 425 385 565 515
241 355 615 555 845 770
16,300 25,700 43,500 39,500 57,500 52,500
24,600 36,000 62,500 57,000 86,000 79,000
2,300 2,100 1,900 1,600 1,700 1,500
3,000 2,800 2,500 2,200 2,300 2,000
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
170 172 174 174 178 178
210 228 276 276 322 322
214.5 233 283 283 331.5 331.5
2 2 2.5 2.5 3 3
1 1 1 1 1.5 1.5
165 300 480 435 630
257 430 715 650 970
16,900 31,000 49,000 44,000 64,500
26,200 43,500 73,000 66,500 99,000
2,100 2,000 1,800 1,500 1,600
2,800 2,600 2,400 2,100 2,100
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
180 182 188 188 188
220 248 292 292 342
224.5 253 301.5 301.5 351.5
2 2 3 3 3
1 1 1.5 1.5 1.5
B-53
●Single and Duplex Arrangements 2B
B r
ra
r1
r
ra
r
D
a
a
a
a
Face-to-face arrangement (DF)
Back-to-back arrangement (DB)
Single
da
Da
d
Tandem arrangement (DT)
d 170∼300mm Boundary dimensions
Basic load ratings dynamic
mm d
D
B
2B
170
360
72
180
250 280 320 320 380 380
static
dynamic
kN 2
2
Cr
Limiting speeds static
kgf Cor
Cr
1
Bearing numbers
Load center
rpm Cor
grease
oil
Mass
mm
kg single
a
(approx.)
rs min
rls min
144
4
1.5
355
445
36,000 45,500
1,700
2,300
7334B
147
35.3
33 46 52 52 75 75
66 92 104 104 150 150
2 2.1 4 4 4 4
1 1.1 1.5 1.5 1.5 1.5
131 219 305 276 410 375
163 266 385 350 535 490
13,400 22,300 31,000 28,100 41,500 38,000
16,600 27,100 39,000 35,500 54,500 50,000
2,500 2,300 2,100 1,800 1,900 1,600
3,300 3,100 2,800 2,400 2,500 2,100
7936 7036 7236 7236B 7336 7336B
78.5 89.5 98 131 118 155
4.87 10.4 17.7 17.7 40.9 40.9
190
260 290 340 340 400 400
33 46 55 55 78 78
66 92 110 110 156 156
2 2.1 4 4 5 5
1 1.1 1.5 1.5 2 2
133 224 305 273 430 390
169 280 390 355 585 535
13,500 22,800 31,000 27,800 44,000 40,000
17,200 28,600 39,500 36,000 59,500 54,500
2,400 2,200 2,000 1,700 1,800 1,500
3,200 2,900 2,600 2,200 2,300 2,000
7938 7038 7238 7238B 7338 7338B
81.5 92.5 104 139 124 163
5.1 10.8 21.3 21.3 47 47
200
280 310 360 360 420 420
38 51 58 58 80 80
76 102 116 116 160 160
2.1 2.1 4 4 5 5
1.1 1.1 1.5 1.5 2 2
185 252 335 305 450 410
231 325 450 410 605 555
18,900 25,700 34,500 31,000 46,000 42,000
23,600 33,000 46,000 41,500 62,000 56,500
2,200 2,100 1,900 1,600 1,700 1,400
3,000 2,800 2,500 2,100 2,200 1,900
7940 7040 7240 7240B 7340 7340B
88.5 99 110 146 130 170
7.15 14 25.3 25.3 53.1 53.1
220
300
38
76
2.1
1.1
187
239
19,000 24,300
2,000
2,700
7944
94
7.74
240
320
38
76
2.1
1.1
197
264
20,100 26,900
1,800
2,400
7948
100
8.34
260
360
46
92
2.1
1.1
258
375
26,300 38,000
1,700
2,200
7952
112
14
280
380
46
92
2.1
1.1
261
385
26,600 39,500
1,500
2,100
7956
118
14.8
300
420
56
112
3
1.1
325
520
33,500 53,000
1,400
1,900
7960
132
23.7
1 Bearing numbers appended with the code "B" have a contact angle of 40˚; bearings with this code have a contact angle of 30˚. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-54
●Single and Duplex Arrangements
r 1a
ra
Equivalent bearing load dynamic Pr＝XFr＋YFa
ra
r1a
Contact angle
Db
da
Da
Single, DT DB, DF Fa / Fr≦e Fa / Fr＞e Fa / Fr≦e Fa / Fr＞e X Y X Y X Y X Y
e
30˚ 0.80 40˚ 1.14
da
1 1
0 0
0.39 0.76 0.35 0.57
1 1
0.78 0.63 1.24 0.55 0.57 0.93
static Por＝Xo Fr＋Yo Fa Contact angle
30˚ 40˚
Single, DT Xo Yo 0.5 0.5
0.33 0.26
DB, DF
Xo
Yo 0.66 0.52
1 1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
59,000
Limiting speeds (duplex) rpm
Bearing numbers
1
DB
DF
DT
Abutment and fillet dimensions
da
Da
mm Db
ras
r1as
min
max
max
max
max
grease
oil
90,500
1,400
1,800
DB
DF
DT
188
342
351.5
3
1.5
575
890
213 355 495 450 665 605
325 530 770 700 1 070 975
21,700 33,500 36,500 54,000 50,500 78,500 45,500 71,000 68,000 109,000 62,000 99,500
2,000 1,900 1,700 1,400 1,500 1,300
2,700 2,500 2,200 1,900 2,000 1,700
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
190 192 198 198 198 198
240 268 302 302 362 362
244.5 273 311.5 311.5 371.5 371.5
2 2 3 3 3 3
1 1 1.5 1.5 1.5 1.5
216 365 495 445 695 635
335 560 780 705 1 170 1 070
22,000 34,500 37,000 57,000 50,000 79,500 45,000 72,000 71,000 119,000 64,500 109,000
1,900 1,800 1,600 1,400 1,400 1,200
2,500 2,300 2,100 1,800 1,900 1,600
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
200 202 208 208 212 212
250 278 322 322 378 378
254.5 283 331.5 331.5 390 390
2 2 3 3 4 4
1 1 1.5 1.5 2 2
300 410 550 495 730 665
465 650 900 815 1 210 1 110
30,500 47,000 41,500 66,000 56,000 92,000 50,500 83,000 74,500 124,000 68,000 113,000
1,800 1,700 1,500 1,300 1,300 1,200
2,400 2,200 2,000 1,700 1,800 1,500
DB DB DB DB DB DB
DF DF DF DF DF DF
DT DT DT DT DT DT
212 212 218 218 222 222
268 298 342 342 398 398
273 303 351.5 351.5 410 410
2 2 3 3 4 4
1 1 1.5 1.5 2 2
305
475
31,000
48,500
1,600
2,100
DB
DF
DT
232
288
293
2
1
320
530
32,500
54,000
1,500
1,900
DB
DF
DT
252
308
313
2
1
420
750
42,500
76,500
1,300
1,800
DB
DF
DT
272
348
353
2
1
425
775
43,000
79,000
1,200
1,600
DB
DF
DT
292
368
373
2
1
530
1 040
54,000 106,000
1,100
1,500
DB
DF
DT
314
406
413
2.5
1
B-55
●High Speed Single and Duplex Arrangements 2B
B r
ra
r1
r
ra
r d
D
Da
a
a
Single
a
a Tandem arrangement (DT)
Face-to-face arrangement (DF)
Back-to-back arrangement (DB)
da
d 10∼40mm Boundary dimensions
Basic load ratings dynamic
mm
static
dynamic
kN 2
2
Limiting speeds
1
static
kgf
Bearing numbers
rpm
Load center
Mass
mm
kg single
a
(approx.)
grease
oil
225 269
43,000 41,000
58,000 55,000
7000C 7200C
6.5 7
0.019 0.029
555 720
269 355
39,000 36,000
52,000 49,000
7001C 7201C
6.5 8
0.021 0.036
3.40 4.50 6.85
635 915 1,360
345 460 700
34,000 32,000 28,000
45,000 42,000 38,000
7002C 7202C 7302C
7.5 9 10.5
0.029 0.045 0.081
7.70 11.2 15.7
4.10 5.75 8.25
785 1,140 1,600
420 590 840
31,000 29,000 26,000
41,000 38,000 35,000
7003C 7203C 7303C
8.5 10 11.5
0.038 0.062 0.109
0.3 0.6 0.6
10.5 14.6 18.5
6.05 8.15 9.95
1,070 1,490 1,890
615 835 1,020
27,000 25,000 23,000
36,000 34,000 31,000
7004C 7204C 7304C
10 11.5 12.5
0.066 0.1 0.14
0.3 0.3 0.6 1 1.1
0.15 0.15 0.3 0.6 0.6
5.05 7.85 11.7 16.6 26.4
3.85 5.40 7.45 10.2 15.3
515 800 1,190 1,690 2,690
390 555 755 1,050 1,560
27,000 25,000 23,000 21,000 19,000
36,000 33,000 31,000 28,000 26,000
7805C 7905C 7005C 7205C 7305C
7.5 9 11 12.5 14.5
0.021 0.042 0.078 0.121 0.222
14 18 26 32 38
0.3 0.3 1 1 1.1
0.15 0.15 0.6 0.6 0.6
5.35 8.30 15.1 23.0 32.5
4.50 6.25 10.3 14.7 20.3
545 845 1,540 2,350 3,300
460 640 1,050 1,500 2,070
23,000 21,000 20,000 18,000 16,000
31,000 28,000 26,000 24,000 22,000
7806C 7906C 7006C 7206C 7306C
8.5 9.5 12.5 14 16.5
0.025 0.048 0.112 0.191 0.33
7 10 14 17 21
14 20 28 34 42
0.3 0.6 1 1.1 1.5
0.15 0.3 0.6 0.6 1
5.80 13.2 19.1 30.5 40.5
5.25 9.65 13.7 19.9 25.8
590 1,340 1,950 3,100 4,100
535 985 1,390 2,030 2,630
20,000 19,000 17,000 16,000 14,000
27,000 25,000 23,000 21,000 19,000
7807C 7907C 7007C 7207C 7307C
9 11 13.5 15.5 18
0.028 0.073 0.149 0.273 0.44
7 12 15 18
14 24 30 36
0.3 0.6 1 1.1
0.15 0.3 0.6 0.6
6.05 14.0 20.6 36.5
5.75 11.1 15.9 25.2
615 1,420 2,100 3,700
585 1,140 1,620 2,570
18,000 17,000 15,000 14,000
24,000 22,000 21,000 19,000
7808C 7908C 7008C 7208C
9.5 13 14.5 17
0.031 0.109 0.184 0.35
d
D
B
2B
rs min
rls min
10
26 30
8 9
16 18
0.3 0.6
12
28 32
8 10
16 20
15
32 35 42
9 11 13
17
35 40 47
20
Cr
Cor
Cr
Cor
0.15 0.3
4.90 5.40
2.20 2.64
500 555
0.3 0.6
0.15 0.3
5.40 7.10
2.64 3.45
18 22 26
0.3 0.6 1
0.15 0.3 0.6
6.25 9.00 13.30
10 12 14
20 24 28
0.3 0.6 1
0.15 0.3 0.6
42 47 52
12 14 15
24 28 30
0.6 1 1.1
25
37 42 47 52 62
7 9 12 15 17
14 18 24 30 34
30
42 47 55 62 72
7 9 13 16 19
35
47 55 62 72 80
40
52 62 68 80
1 This value was achieved with laminated phenol resin machined cages; in the case of molded resin cages,with oil lubricant, the value will be 75% of this. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-56
●High Speed Single and Duplex Arrangements r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa
ra
Single, DT DB, DF Fa/Fr≦e Fa/Fr＞e Fa/Fr≦e Fa/Fr＞e X Y X Y X Y X Y
3）
Fa
ra da
Db
0.010 0.020 0.040 0.070 0.10 0.15 0.20 0.30 0.40 0.50
da
Da
e
Cor
ra
0.37 0.39 0.41 0.44 0.46 0.49 0.51 0.55 0.56 0.56
1
0
1.51 1.45 1.36 1.28 0.44 1.22 1.15 1.10 1.02 1.00 1.00
2.46 1.70 2.35 1.62 2.21 1.52 2.08 1.43 1.37 0.72 1.98 1.87 1.29 1.78 1.23 1.66 1.15 1.63 1.12 1.63 1.12
1
static Por＝Xo Fr＋Yo Fa Single, DT Xo Yo 0.5
0.46
DB, DF
Xo 1
Yo 0.92
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
1
Limiting speeds (duplex) rpm grease
oil
Bearing numbers
DB
DF
DT
Abutment and fillet dimensions
da
Da
mm Db
ras
r1as
min
max
max
max
max
7.95 8.80
4.40 5.25
815 900
450 540
34,000 32,000
46,000 43,000
DB DB
DF DF
DT DT
12.5 14.5
23.5 25.5
24.8 27.5
0.3 0.6
0.15 0.3
8.80 11.5
5.25 6.95
900 1,170
540 705
31,000 29,000
41,000 38,000
DB DB
DF DF
DT DT
14.5 16.5
25.5 27.5
26.8 29.5
0.3 0.6
0.15 0.3
10.1 14.6 21.6
6.75 9.05 13.7
1,030 1,490 2,200
690 920 1,400
27,000 25,000 23,000
36,000 33,000 30,000
DB DB DB
DF DF DF
DT DT DT
17.5 19.5 20.5
29.5 30.5 36.5
30.8 32.5 37.5
0.3 0.6 1
0.15 0.3 0.6
12.5 18.1 25.6
8.25 11.5 16.5
1,280 1,850 2,610
840 1,180 1,680
24,000 23,000 21,000
33,000 30,000 27,000
DB DB DB
DF DF DF
DT DT DT
19.5 21.5 22.5
32.5 35.5 41.5
33.8 37.5 42.5
0.3 0.6 1
0.15 0.3 0.6
17.0 23.7 30.0
12.1 16.3 19.9
1,740 2,420 3,050
1,230 1,670 2,030
22,000 20,000 18,000
29,000 27,000 24,000
DB DB DB
DF DF DF
DT DT DT
24.5 25.5 27
37.5 41.5 45
39.5 42.5 47.5
0.6 1 1
0.3 0.6 0.6
8.20 12.7 19.0 27.0 43.0
7.65 10.8 14.9 20.5 30.5
835 1,300 1,940 2,750 4,350
780 1,110 1,510 2,090 3,100
21,000 19,000 18,000 17,000 15,000
28,000 26,000 24,000 22,000 20,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
27.5 27.5 29.5 30.5 32
34.5 39.5 42.5 46.5 55
35.8 40.8 44.5 47.5 57.5
0.3 0.3 0.6 1 1
0.15 0.15 0.3 0.6 0.6
8.70 13.5 24.6 37.5 52.5
9.00 12.5 20.6 29.5 40.5
890 1,380 2,510 3,800 5,350
920 1,280 2,100 3,000 4,150
18,000 17,000 16,000 14,000 13,000
24,000 22,000 21,000 19,000 17,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
32.5 32.5 35.5 35.5 37
39.5 44.5 49.5 56.5 65
40.8 45.8 50.5 57.5 67.5
0.3 0.3 1 1 1
0.15 0.15 0.6 0.6 0.6
9.40 21.4 31.0 49.5 65.5
10.5 19.3 27.3 40.0 51.5
960 2,180 3,150 5,050 6,700
1,070 1,970 2,790 4,050 5,250
16,000 15,000 14,000 13,000 11,000
21,000 20,000 18,000 17,000 15,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
37.5 39.5 40.5 42 43.5
44.5 50.5 56.5 65 71.5
45.8 52.5 57.5 67.5 74.5
0.3 0.6 1 1 1.5
0.15 0.3 0.6 0.6 1
9.80 22.7 33.5 59.0
11.5 22.3 32.0 50.5
1,000 2,310 3,400 6,000
1,170 2,270 3,250 5,150
14,000 13,000 12,000 11,000
19,000 18,000 16,000 15,000
DB DB DB DB
DF DF DF DF
DT DT DT DT
42.5 44.5 45.5 47
49.5 57.5 62.5 73
50.8 59.5 63.5 75.5
0.3 0.6 1 1
0.15 0.3 0.6 0.6
3 For back-to-back and face-to-face duplex arrangements, find with the formula 2Fa / Cor. Note: This bearing has a contact angle of 15°and is manufactured with accuracies of JIS Class 5 or higher.
B-57
●High Speed Single and Duplex Arrangements 2B
B r
ra
r1
r
ra
r d
D
Da
a
a
Single
a
a Tandem arrangement (DT)
Face-to-face arrangement (DF)
Back-to-back arrangement (DB)
da
d 40∼75mm Boundary dimensions
Basic load ratings dynamic
mm
static
dynamic
kN 2
2
Limiting speeds
1
static
kgf
Bearing numbers
rpm
Load center
Mass
mm
kg single
a
(approx.)
Cor
grease
oil
5,050
3,300
13,000
17,000
7308C
20
0.606
7.40 14.1 19.3 28.8 43.0
775 1,760 2,490 4,150 6,550
755 1,430 1,960 2,940 4,400
16,000 15,000 14,000 13,000 11,000
21,000 20,000 19,000 17,000 15,000
7809C 7909C 7009C 7209C 7309C
10.5 13.5 16 18 22.5
0.038 0.126 0.233 0.4 0.83
7.90 18.3 26.0 43.0 75.0
8.05 15.8 21.9 31.5 51.5
805 1,870 2,650 4,350 7,650
820 1,620 2,230 3,250 5,250
14,000 14,000 13,000 12,000 10,000
19,000 18,000 17,000 15,000 14,000
7810C 7910C 7010C 7210C 7310C
11 14 16.5 19.5 24.5
0.049 0.131 0.253 0.454 1.05
0.15 0.6 0.6 1 1
13.1 19.1 34.0 53.0 87.0
12.7 17.7 28.6 40.0 60.5
1,330 1,950 3,500 5,400 8,850
1,300 1,810 2,920 4,100 6,200
13,000 12,000 12,000 11,000 9,400
18,000 16,000 15,000 14,000 13,000
7811C 7911C 7011C 7211C 7311C
13 15.5 18.5 21 26.5
0.079 0.178 0.37 0.593 1.34
0.3 1 1.1 1.5 2.1
0.15 0.6 0.6 1 1.1
13.4 20.0 35.0 64.0 99.0
13.6 19.5 30.5 49.5 70.5
1,370 2,040 3,550 6,550 10,100
1,390 1,990 3,150 5,050 7,150
12,000 11,000 11,000 9,700 8,700
16,000 15,000 14,000 13,000 12,000
7812C 7912C 7012C 7212C 7312C
14 16 19.5 22.5 28.5
0.101 0.191 0.387 0.757 1.68
20 26 36 46 66
0.6 1 1.1 1.5 2.1
0.3 0.6 0.6 1 1.1
14.1 20.2 37.0 70.0 112
14.9 20.4 34.5 55.0 80.5
1,440 2,060 3,800 7,100 11,400
1,520 2,080 3,500 5,600 8,200
11,000 11,000 9,900 9,000 8,100
15,000 14,000 13,000 12,000 11,000
7813C 7913C 7013C 7213C 7313C
15 17 20 24 30
0.122 0.204 0.421 0.948 2.06
10 16 20 24 35
20 32 40 48 70
0.6 1 1.1 1.5 2.1
0.3 0.6 0.6 1 1.1
14.5 28.9 47.0 76.0 126
15.8 29.0 43.0 60.0 92.0
1,470 2,950 4,800 7,750 12,900
1,610 2,960 4,400 6,150 9,350
10,000 9,900 9,200 8,300 7,500
14,000 13,000 12,000 11,000 10,000
7814C 7914C 7014C 7214C 7314C
15.5 19.5 22 25 32
0.13 0.331 0.583 1.04 2.5
10 16
20 32
0.6 1
0.3 0.6
14.8 29.4
16.7 30.5
1,510 3,000
1,700 3,100
9,700 9,200
13,000 12,000
7815C 7915C
16.5 20
0.138 0.35
d
D
B
2B
rs min
rls min
40
90
23
46
1.5
45
58 68 75 85 100
7 12 16 19 25
14 24 32 38 50
50
65 72 80 90 110
7 12 16 20 27
55
72 80 90 100 120
Cr
Cor
1
49.5
32.5
0.3 0.6 1 1.1 1.5
0.15 0.3 0.6 0.6 1
7.60 17.3 24.4 41.0 64.0
14 24 32 40 54
0.3 0.6 1 1.1 2
0.15 0.3 0.6 0.6 1
9 13 18 21 29
18 26 36 42 58
0.3 1.0 1.1 1.5 2.0
60
78 85 95 110 130
10 13 18 22 31
20 26 36 44 62
65
85 90 100 120 140
10 13 18 23 33
70
90 100 110 125 150
75
95 105
Cr
1 This value was achieved with laminated phenol resin machined cages; in the case of molded resin cages,with oil lubricant, the value will be 75% of this. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-58
●High Speed Single and Duplex Arrangements r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa
ra
Single, DT DB, DF Fa/Fr≦e Fa/Fr＞e Fa/Fr≦e Fa/Fr＞e X Y X Y X Y X Y
3）
Fa
ra da
Db
0.010 0.020 0.040 0.070 0.10 0.15 0.20 0.30 0.40 0.50
da
Da
e
Cor
ra
0.37 0.39 0.41 0.44 0.46 0.49 0.51 0.55 0.56 0.56
1
0
1.51 1.45 1.36 1.28 0.44 1.22 1.15 1.10 1.02 1.00 1.00
2.46 1.70 2.35 1.62 2.21 1.52 2.08 1.43 1.37 0.72 1.98 1.87 1.29 1.78 1.23 1.66 1.15 1.63 1.12 1.63 1.12
1
static Por＝Xo Fr＋Yo Fa Single, DT Xo Yo 0.5
DB, DF
Xo
0.46
Yo 0.92
1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
1
Limiting speeds (duplex) rpm grease
oil
Bearing numbers
DB
DF
DT
Abutment and fillet dimensions
da
Da
mm Db
ras
r1as
min
max
max
max
max
80.0
64.5
8,150
6,600
10,000
13,000
DB
DF
DT
48.5
81.5
84.5
1.5
1
12.3 28.1 39.5 66.5 104
14.8 28.1 38.5 57.5 86.0
1,260 2,870 4,050 6,750 10,600
1,510 2,870 3,950 5,850 8,800
13,000 12,000 11,000 10,000 9,000
17,000 16,000 15,000 13,000 12,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
47.5 49.5 50.5 52 53.5
55.5 63.5 69.5 78 91.5
56.8 65.5 70.5 80.5 94.5
0.3 0.6 1 1 1.5
0.15 0.3 0.6 0.6 1
12.8 29.8 42.0 69.5 122
16.1 31.5 44.0 63.5 103
1,300 3,050 4,300 7,100 12,400
1,640 3,250 4,450 6,450 10,500
11,000 11,000 10,000 9,100 8,200
15,000 14,000 13,000 12,000 11,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
52.5 54.5 55.5 57 60
62.5 67.5 74.5 83 100
63.8 69.5 75.5 85.5 104.5
0.3 0.6 1 1 2
0.15 0.3 0.6 0.6 1
21.2 31.0 55.5 86.0 141
25.5 35.5 57.5 80.0 121
2,160 3,150 5,650 8,750 14,400
2,600 3,600 5,850 8,150 12,400
10,000 9,800 9,200 8,300 7,500
14,000 13,000 12,000 11,000 9,900
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
57.5 60.5 62 63.5 65
69.5 74.5 83 91.5 110
70.8 75.5 85.5 94.5 114.5
0.3 1 1 1.5 2
0.15 0.6 0.6 1 1
21.8 32.5 57.0 104 161
27.2 39.0 61.5 99.0 141
2,230 3,300 5,800 10,600 16,400
2,770 4,000 6,250 10,100 14,300
9,600 9,000 8,400 7,700 6,900
13,000 12,000 11,000 10,000 9,200
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
62.5 65.5 67 68.5 72
75.5 79.5 88 101.5 118
76.8 80.5 90.5 104.5 123
0.3 1 1 1.5 2
0.15 0.6 0.6 1 1
22.9 33.0 60.5 113 182
29.9 40.5 68.5 110 161
2,340 3,350 6,150 11,600 18,600
3,050 4,150 7,000 11,200 16,400
8,900 8,400 7,800 7,100 6,400
12,000 11,000 10,000 9,500 8,500
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
69.5 70.5 72 73.5 77
80.5 84.5 93 111.5 128
82.5 85.5 95.5 114.5 133
0.6 1 1 1.5 2
0.3 0.6 0.6 1 1
23.5 47.0 76.0 123 205
31.5 58.0 86.0 120 184
2,390 4,800 7,750 12,600 20,900
3,250 5,900 8,750 12,300 18,700
8,200 7,800 7,300 6,600 5,900
11,000 10,000 9,700 8,800 7,900
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
74.5 75.5 77 78.5 82
85.5 94.5 103 116.5 138
87.5 95.5 105.5 119.5 143
0.6 1 1 1.5 2
0.3 0.6 0.6 1 1
24.0 47.5
33.5 61.0
2,450 4,850
3,400 6,200
7,700 7,300
10,000 9,700
DB DB
DF DF
DT DT
79.5 80.5
90.5 99.5
92.5 100.5
0.6 1
0.3 0.6
3 For back-to-back and face-to-face duplex arrangements, find with the formula 2Fa / Cor. Note: This bearing has a contact angle of 15°and is manufactured with accuracies of JIS Class 5 or higher.
B-59
●High Speed Single and Duplex Arrangements
d 75∼105mm Boundary dimensions
Basic load ratings dynamic
mm d
D
B
2B
static
dynamic
kN 2
rs min
rls min
2
Cr
Limiting speeds static
kgf Cor
Cr
rpm Cor
grease
oil
1
Bearing numbers
Load center mm
kg single
a
(approx.)
80
85
90
95
100
105
1 This value was achieved with laminated phenol resin machined cages; in the case of molded resin cages,with oil lubricant, the value will be 75% of this. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-60
Mass
●High Speed Single and Duplex Arrangements r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa
ra
Single, DT DB, DF Fa/Fr≦e Fa/Fr＞e Fa/Fr≦e Fa/Fr＞e X Y X Y X Y X Y
3）
Fa
ra da
Db
0.010 0.020 0.040 0.070 0.10 0.15 0.20 0.30 0.40 0.50
da
Da
e
Cor
ra
0.37 0.39 0.41 0.44 0.46 0.49 0.51 0.55 0.56 0.56
1
0
1.51 1.45 1.36 1.28 0.44 1.22 1.15 1.10 1.02 1.00 1.00
2.46 1.70 2.35 1.62 2.21 1.52 2.08 1.43 1.37 0.72 1.98 1.87 1.29 1.78 1.23 1.66 1.15 1.63 1.12 1.63 1.12
1
static Por＝Xo Fr＋Yo Fa Single, DT Xo Yo 0.5
DB, DF
Xo
0.46
Yo 0.92
1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
1
Limiting speeds (duplex) rpm grease
oil
Bearing numbers
DB
DF
DT
Abutment and fillet dimensions
da
Da
mm Db
ras
r1as
min
max
max
max
max
78.0 129 223
91.5 131 208
7,950 13,100 22,800
9,300 13,400 21,200
6,800 6,200 5,500
9,000 8,200 7,400
DB DB DB
DF DF DF
DT DT DT
82 83.5 87
108 121.5 148
110.5 124.5 153
1 1.5 2
0.6 1 1
24.6 48.5 95.5 151 242
35.0 63.0 111 155 234
2,510 4,950 9,700 15,400 24,700
3,600 6,450 11,300 15,800 23,800
7,200 6,800 6,400 5,800 5,200
9,600 9,100 8,500 7,700 6,900
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
84.5 85.5 87 90 92
95.5 104.5 118 130 158
97.5 105.5 120.5 134.5 163
0.6 1 1 2 2
0.3 0.6 0.6 1 1
36.0 65.0 98.0 169 261
49.5 84.5 117 181 261
3,650 6,650 9,950 17,200 26,600
5,050 8,650 12,000 18,400 26,600
6,800 6,400 6,000 5,400 4,900
9,100 8,600 8,000 7,200 6,500
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
90.5 92 92 95 99
104.5 113 123 140 166
105.5 115.5 125.5 144.5 173
1 1 1 2 2.5
0.6 0.6 0.6 1 1
37.0 64.5 116 199 297
52.5 85.0 138 209 315
3,750 6,550 11,900 20,300 30,500
5,350 8,700 14,100 21,400 32,000
6,400 6,100 5,700 5,100 4,600
8,500 8,100 7,500 6,800 6,100
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
95.5 97 98.5 100 104
109.5 118 131.5 150 176
110.5 120.5 134.5 154.5 183
1 1 1.5 2 2.5
0.6 0.6 1 1 1
38.0 67.0 119 226 320
55.5 91.5 146 240 350
3,850 6,850 12,200 23,000 32,500
5,650 9,350 14,900 24,400 35,500
6,000 5,800 5,400 4,800 4,300
8,000 7,700 7,100 6,400 5,800
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
100.5 102 103.5 107 109
114.5 123 136.5 158 186
115.5 125.5 139.5 163 193
1 1 1.5 2 2.5
0.6 0.6 1 1 1
38.0 86.0 122 242 360
56.5 117 154 254 415
3,900 8,750 12,500 24,700 37,000
5,750 12,000 15,800 25,900 42,000
5,700 5,400 5,100 4,600 4,100
7,600 7,200 6,800 6,100 5,500
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
105.5 107 108.5 112 114
119.5 133 141.5 168 201
120.5 135.5 144.5 173 208
1 1 1.5 2 2.5
0.6 0.6 1 1 1
39.0 87.5 143 264 385
59.5 123 179 286 450
4,000 8,900 14,600 26,900 39,000
6,050 12,500 18,200 29,100 46,000
5,500 5,200 4,800 4,400 3,900
7,300 6,900 6,400 5,800 5,200
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
110.5 112 115 117 119
124.5 138 150 178 211
125.5 140.5 154.5 183 218
1 1 2 2 2.5
0.6 0.6 1 1 1
3 For back-to-back and face-to-face duplex arrangements, find with the formula 2Fa / Cor. Note: This bearing has a contact angle of 15°and is manufactured with accuracies of JIS Class 5 or higher.
B-61
●High Speed Single and Duplex Arrangements
d 110∼200mm Boundary dimensions
Basic load ratings dynamic
mm d
D
B
2B
static
dynamic
kN 2
rs min
rls min
2
Cr
Limiting speeds static
kgf Cor
Cr
rpm Cor
grease
oil
1
Bearing numbers
Load center mm
kg single
a
(approx.)
110
120
130
140
150
160
170 180
1 This value was achieved with laminated phenol resin machined cages; in the case of molded resin cages,with oil lubricant, the value will be 75% of this. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-62
Mass
●High Speed Single and Duplex Arrangements r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa
ra
Single, DT DB, DF Fa/Fr≦e Fa/Fr＞e Fa/Fr≦e Fa/Fr＞e X Y X Y X Y X Y
3）
Fa
ra da
Db
0.010 0.020 0.040 0.070 0.10 0.15 0.20 0.30 0.40 0.50
da
Da
e
Cor
ra
0.37 0.39 0.41 0.44 0.46 0.49 0.51 0.55 0.56 0.56
1
0
1.51 1.45 1.36 1.28 0.44 1.22 1.15 1.10 1.02 1.00 1.00
2.46 1.70 2.35 1.62 2.21 1.52 2.08 1.43 1.37 0.72 1.98 1.87 1.29 1.78 1.23 1.66 1.15 1.63 1.12 1.63 1.12
1
static Por＝Xo Fr＋Yo Fa Single, DT Xo Yo 0.5
DB, DF
Xo
0.46
Yo 0.92
1
For single and DT arrangement, When Por＜Fr use Por＝Fr
Basic load ratings dynamic static dynamic static (duplex) (duplex) kN kgf Cr Cor Cr Cor
1
Limiting speeds (duplex) rpm grease
oil
Bearing numbers
DB
DF
DT
Abutment and fillet dimensions
da
Da
mm Db
ras
r1as
min
max
max
max
max
56.0 89.0 164 286 405
85.0 127 203 320 485
5,750 9,050 16,700 29,200 41,000
8,700 12,900 20,700 32,500 49,000
5,200 4,900 4,600 4,100 3,700
6,900 6,600 6,100 5,500 5,000
DB DB DB DB DB
DF DF DF DF DF
DT DT DT DT DT
115.5 117 120 122 124
134.5 143 160 188 226
135.5 145.5 164.5 193 233
1 1 2 2 2.5
0.6 0.6 1 1 1
57.0 109 168 325
89.5 157 216 385
5,800 11,200 17,100 33,000
9,100 16,000 22,000 39,000
4,700 4,500 4,200 3,800
6,300 6,000 5,600 5,000
DB DB DB DB
DF DF DF DF
DT DT DT DT
125.5 127 130
144.5 158 170
145.5 160.5 174.5
1 1 2
0.6 0.6 1
3 For back-to-back and face-to-face duplex arrangements, find with the formula 2Fa / Cor. Note: This bearing has a contact angle of 15°and is manufactured with accuracies of JIS Class 5 or higher.
B-63
●Ultra-High Speed Angular Contact Ball Bearings BNT type Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ＞e Fr ≦e Fr e Cor X Y X Y 0.010 0.35 1.58 0.020 0.36 1.54 0.040 0.38 1.48 0.070 0.40 1.41 0.10 0.41 1.37 1 0 0.44 0.15 0.43 1.31 0.20 0.44 1.26 0.30 0.47 1.20 0.40 0.49 1.15 0.50 0.50 1.11 static Por＝0.52Fr＋0.54Fa
B r
ra
r
r1
ra
r d
D
Da
da
a
When Por＜Fr use Por＝Fr
d 10∼45mm Boundary dimensions mm 1
Basic load ratings dynamic static dynamic static kN kgf 1
Limiting speeds rpm
Cr
Cor
grease
oil
1.45 1.71
385 420
148 175
48,000 46,000
64,000 61,000
4.15 5.40
1.73 2.28
420 550
176 232
43,000 40,000
0.15 0.3
4.75 6.85
2.22 2.97
485 700
226 300
0.3 0.6
0.15 0.3
5.90 8.55
2.70 3.80
600 870
12 14
0.6 1
0.3 0.6
8.00 11.2
3.95 5.35
47 52
12 15
0.6 1
0.3 0.6
8.95 12.7
30
55 62
13 16
1 1
0.6 0.6
35
62 72
14 17
1 1.1
40
68 80
15 18
45
75 85
16 19
d
D
B
rs min
r1s min
Cr
Cor
10
26 30
8 9
0.3 0.6
0.15 0.3
3.75 4.15
12
28 32
8 10
0.3 0.6
0.15 0.3
15
32 35
9 11
0.3 0.6
17
35 40
10 12
20
42 47
25
Bearing numbers
Abutment and fillet dimensions mm da Da ras
Load Mass center mm kg
min
max
max
a
(approx.)
BNT000 BNT200
12.5 14.5
23.5 25.5
0.3 0.6
6.5 7
0.015 0.019
57,000 54,000
BNT001 BNT201
14.5 16.5
25.5 27.5
0.3 0.6
6.5 8
0.020 0.025
38,000 35,000
50,000 47,000
BNT002 BNT202
17.5 19.5
29.5 30.5
0.3 0.6
7.5 9
0.029 0.035
275 385
34,000 32,000
46,000 42,000
BNT003 BNT203
19.5 21.5
32.5 35.5
0.3 8.5 0.6 10
0.033 0.054
815 1,140
405 545
30,000 28,000
40,000 38,000
BNT004 BNT204
24.5 25.5
37.5 41.5
0.6 10 1 11.5
0.057 0.092
4.85 6.70
910 1,290
495 685
25,000 24,000
34,000 31,000
BNT005 BNT205
29.5 30.5
42.5 46.5
0.6 11 1 12.5
0.067 0.127
11.6 17.6
6.75 9.60
1,180 1,800
685 980
22,000 20,000
29,000 27,000
BNT006 BNT206
35.5 35.5
49.5 56.5
1 1
12.5 14
0.109 0.201
0.6 0.6
14.6 23.2
8.95 13.1
1,490 2,370
910 1,330
19,000 18,000
26,000 24,000
BNT007 BNT207
40.5 42
56.5 65
1 1
13.5 15.5
0.146 0.294
1 1.1
0.6 0.6
15.7 27.8
10.4 16.5
1,600 2,830
1,060 1,680
17,000 16,000
23,000 21,000
BNT008 BNT208
45.5 47
62.5 73
1 1
14.5 17
0.182 0.383
1 1.1
0.6 0.6
18.6 31.0
12.6 18.9
1,900 3,200
1,290 1,920
15,000 14,000
21,000 19,000
BNT009 BNT209
50.5 52
69.5 78
1 1
16 18
0.235 0.437
1 Minimal allowable dimension for chamfer dimension r or r1. Note: This bearing is manufactured with accuracies of JIS Class 5 or higher.
B-64
●Ultra-High Speed Angular Contact Ball Bearings HSB type Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fa ＞e Fr ≦e Fr e Cor X Y X Y 0.010 0.35 1.58 0.020 0.36 1.54 0.040 0.38 1.48 0.070 0.40 1.41 0.10 0.41 1.37 1 0 0.44 0.15 0.43 1.31 0.20 0.44 1.26 0.30 0.47 1.20 0.40 0.49 1.15 0.50 0.50 1.11 static Por＝0.52Fr＋0.54Fa
B r
r1
r1
r
D
ra ra
d
da
Da
a
When Por＜Fr use Por＝Fr
d 50∼110mm Boundary dimensions
Basic load ratings dynamic static dynamic static kN kgf
mm 1
1
Limiting speeds rpm grease
oil
745 1,160
15,000 14,000
20,000 19,000
1,380 2,300
940 1,380
14,000 13,000
9.95 15.0
1,420 2,410
1,010 1,530
14.3 24
10.7 15.8
1,460 2,450
0.6 0.6
18 29.4
13.5 19.9
1 1.1
0.6 0.6
18.5 31.5
16 22
1 1.1
0.6 0.6
120 130
18 22
1.1 1.1
90
125 140
18 24
95
130 145
100
d
D
B
rs min
r1s min
50
72 80
12 16
0.6 1
0.3 0.6
55
80 90
13 18
1 1.1
60
85 95
13 18
65
90 100
70
Cr
Cor
Cr
10.6 20.8
7.30 11.4
1,080 2,120
0.6 0.6
13.5 22.6
9.20 13.6
1 1.1
0.6 0.6
13.9 23.7
13 18
1 1.1
0.6 0.6
100 110
16 20
1 1.1
75
105 115
16 20
80
110 125
85
Cor
Bearing numbers
Abutment and fillet dimensions mm da Da ras
Load Mass center mm kg a
max
HSB910C HSB010C
54.5 55.5
67.5 74.5
0.6 14 1 16.5
0.141 0.256
18,000 17,000
HSB911C HSB011C
60.5 62
74.5 83
1 1
15.5 18.5
0.192 0.397
13,000 12,000
17,000 16,000
HSB912C HSB012C
65.5 67
79.5 88
1 1
16 19.5
0.206 0.425
1,090 1,610
12,000 11,000
16,000 15,000
HSB913C HSB013C
70.5 72
84.5 93
1 1
17 20
0.22 0.452
1,830 3,000
1,370 2,030
11,000 10,000
15,000 14,000
HSB914C HSB014C
75.5 94.5 77 103
1 1
19.5 22
0.362 0.64
14.4 22.4
1,880 3,200
1,470 2,290
10,000 9,500
14,000 13,000
HSB915C HSB015C
80.5 99.5 82 108
1 1
20 22.5
0.383 0.68
18.9 36
15.4 25.7
1,930 3,650
1,570 2,620
9,600 8,900
13,000 12,000
HSB916C HSB016C
85.5 104.5 87 118
1 1
20.5 24.5
0.405 0.915
0.6 0.6
22.7 36.5
18.3 26.8
2,320 3,700
1,860 2,740
9,000 8,400
12,000 11,000
HSB917C HSB017C
92 92
1 1
22.5 25.5
0.578 0.959
1.1 1.5
0.6 1
23.4 42
19.5 31.5
2,380 4,300
1,980 3,200
8,500 7,900
11,000 11,000
HSB918C HSB018C
97 118 98.5 131.5
1 23.5 1.5 27.5
0.607 1.25
18 24
1.1 1.5
0.6 1
24 42.5
20.6 32.5
2,440 4,350
2,110 3,350
8,100 7,500
11,000 10,000
HSB919C 102 123 HSB019C 103.5 136.5
1 24 1.5 28
0.636 1.3
140 150
20 24
1.1 1.5
0.6 1
33.5 44
28 35
3,450 4,500
2,850 3,600
7,600 7,100
10,000 9,500
HSB920C 107 133 HSB020C 108.5 141.5
1 26 1.5 28.5
0.856 1.36
105
145 160
20 26
1.1 2
0.6 1
34.5 50.5
29.7 40.5
3,550 5,150
3,050 4,150
7,300 6,700
9,700 9,000
HSB921C 112 HSB021C 115
138 150
1 2
26.5 31
0.893 1.73
110
150 170
20 28
1.1 2
0.6 1
35 62.5
30.5 49.5
3,550 6,400
3,150 5,000
6,900 6,400
9,200 8,600
HSB922C 117 HSB022C 120
143 160
1 2
27.5 33
0.928 2.13
1 Minimal allowable dimension for chamfer dimension r or r1. Note: This bearing is manufactured with accuracies of JIS Class 5 or higher.
B-65
113 123
max
(approx.)
min
●Ultra-High Speed Angular Contact Ball Bearings
Pr＝XFr＋YFa
B r
ra
r1
r1
ra
r
D
d
da
Da
Fa Cor
e
0.010 0.020 0.040 0.070 0.10 0.15 0.20 0.30 0.40 0.50
0.35 0.36 0.38 0.40 0.41 0.43 0.44 0.47 0.49 0.50
Fa Fr ≦e X Y
1
Fa ＞e Fr X Y 1.58 1.54 1.48 1.41 1.37 0 0.44 1.31 1.26 1.20 1.15 1.11
a
d 120∼170mm Boundary dimensions mm d
D
B
1
rs min
r1s min
Basic load ratings dynamic static dynamic static kN kgf 1
Cr
Cor
Cr
Cor
Limiting speeds rpm grease
150 160 170
1 Minimal allowable dimension for chamfer dimension r or r1. Note: This bearing is manufactured with accuracies of JIS Class 5 or higher.
B-66
oil
Bearing numbers
Abutment and fillet dimensions mm da Da ras min
max
max
Load Mass center mm kg a
(approx.)
B-67
●Ceramic Ball Angular Contact Ball Bearings 5S-BNT type B r
ra
r
r1
ra
r d
D
Da
da
a
d 10∼45mm Boundary dimensions
Basic load ratings dynamic (approx.) kN kgf
mm d
D
B
rs min
10
26 30
8 9
0.3 0.6
12
28 32
8 10
15
32 35
17
1
rls min
1
2
Bearing numbers da
Abutment and fillet dimensions mm Da
ras
min
max
max
Load center mm
Mass
a
(approx.)
kg
Cr
Cr
0.15 0.3
3.75 4.95
385 500
5S-BNT000 5S-BNT200
12.5 14.5
23.5 25.5
0.3 0.6
6.5 7
0.013 0.016
0.3 0.6
0.15 0.3
4.15 5.40
420 550
5S-BNT001 5S-BNT201
14.5 16.5
25.5 27.5
0.3 0.6
6.5 8
0.018 0.021
9 11
0.3 0.6
0.15 0.3
4.75 6.85
485 700
5S-BNT002 5S-BNT202
17.5 19.5
29.5 30.5
0.3 0.6
7.5 9
0.026 0.03
35 40
10 12
0.3 0.6
0.15 0.3
5.90 8.55
600 870
5S-BNT003 5S-BNT203
19.5 21.5
32.5 35.5
0.3 0.6
8.5 10
0.029 0.046
20
42 47
12 14
0.6 1
0.3 0.6
8.00 11.2
815 1,140
5S-BNT004 5S-BNT204
24.5 25.5
37.5 41.5
0.6 1
10 11.5
0.05 0.08
25
47 52
12 15
0.6 1
0.3 0.6
8.95 12.7
910 1,290
5S-BNT005 5S-BNT205
29.5 30.5
42.5 46.5
0.6 1
11 12.5
0.059 0.113
30
55 62
13 16
1 1
0.6 0.6
11.6 17.6
1,180 1,800
5S-BNT006 5S-BNT206
35.5 35.5
49.5 56.5
1 1
12.5 14
0.097 0.113
35
62 72
14 17
1 1.1
0.6 0.6
14.6 23.2
1,490 2,370
5S-BNT007 5S-BNT207
40.5 42
56.5 65
1 1
13.5 15.5
0.128 0.255
40
68 80
15 18
1 1.1
0.6 0.6
15.7 27.8
1,600 2,830
5S-BNT008 5S-BNT208
45.5 47
62.5 73
1 1
14.5 17
0.162 0.331
45
75 85
16 19
1 1.1
0.6 0.6
18.6 31.0
1,900 3,200
5S-BNT009 5S-BNT209
50.5 52
69.5 78
1 1
16 18
0.208 0.374
1 Minimal allowable dimension for chamfer dimension r or r1. 2 There is no JIS regulation table concerning basic rated loads for ceramic ball angular contact ball bearings. In NTN wear life testing, these bearings displayed the same wear life as steel angular contact ball bearings; therefore, the values for steel bearings have been given as reference.
B-68
●Ceramic Ball Angular Contact Ball Bearings 5S-HSB type B r
r1
r1
r
D
ra ra
d
da
Da
a
d 50∼120mm Boundary dimensions
Basic load ratings dynamic (approx.) kN kgf
mm 1
1
Bearing numbers
ras
min
max
max
Load center mm
Mass
a
(approx.)
kg
D
B
rs min
rls min
50
72 80
12 16
0.6 1
0.3 0.6
10.6 20.8
1,080 2,120
5S-HSB910C 5S-HSB010C
54.5 55.5
67.5 74.5
0.6 1
14 16.5
0.134 0.234
55
80 90
13 18
1 1.1
0.6 0.6
13.5 22.6
1,380 2,300
5S-HSB911C 5S-HSB011C
60.5 62
74.5 83
1 1
15.5 18.5
0.18 0.372
60
85 95
13 18
1 1.1
0.6 0.6
13.9 23.7
1,420 2,410
5S-HSB912C 5S-HSB012C
65.5 67
79.5 88
1 1
16 19.5
0.194 0.398
65
90 100
13 18
1 1.1
0.6 0.6
14.3 24.0
1,460 2,450
5S-HSB913C 5S-HSB103C
70.5 72
84.5 93
1 1
17 20
0.207 0.423
70
100 110
16 20
1 1.1
0.6 0.6
18.0 29.4
1,830 3,000
5S-HSB914C 5S-HSB014C
75.5 77
94.5 103
1 1
19.5 22
0.343 0.601
75
105 115
16 20
1 1.1
0.6 0.6
18.5 31.5
1,880 3,200
5S-HSB915C 5S-HSB015C
80.5 82
99.5 108
1 1
20 22.5
0.363 0.636
80
110 125
16 22
1 1.1
0.6 0.6
18.9 36.0
1,930 3,650
5S-HSB916C 5S-HSB016C
85.5 87
104.5 118
1 1
20.5 24.5
0.384 0.86
85
120 130
18 22
1.1 1.1
0.6 0.6
22.7 36.5
2,320 3,700
5S-HSB917C 5S-HSB017C
92 92
113 123
1 1
22.5 25.5
0.55 0.901
90
125 140
18 24
1.1 1.5
0.6 1
23.4 42.0
2,380 4,300
5S-HSB918C 5S-HSB018C
97 98.5
118 131.5
1 1.5
23.5 27.5
0.577 1.18
95
130 145
18 24
1.1 1.5
0.6 1
24.0 42.5
2,440 4,350
5S-HSB919C 5S-HSB019C
102 103.5
123 136.5
1 1.5
24 28
0.604 1.23
140
20 24
1.1 1.5
0.6 1
33.5 44.0
3,450 4,500
5S-HSB920C 5S-HSB020C
107 108.5
133 141.5
1 1.5
26 28.5
0.837 1.28
145
20 26
1.1 2
0.6 1
34.5 50.5
3,550 5,150
5S-HSB921C 5S-HSB021C
112 115
138 150
1 2
26.5 31
0.837 1.63
150
20 28
1.1 2
0.6 1
35.0 62.5
3,550 6,400
5S-HSB922C 5S-HSB022C
117 120
143 160
1 2
27.5 33
0.87 1.99
165
22 28
1.1 2
0.6 1
41.0 63.0
4,150 6,450
5S-HSB924C 5S-HSB024C
127 130
158 170
1 2
30 34
1.2 2.13
105 160 110 170 120 180
Cr
da
Abutment and fillet dimensions mm Da
d
100 150
Cr
2
1 Minimal allowable dimension for chamfer dimension r or r1. 2 There is no JIS formula concerning basic rated loads for ceramic ball angular contact ball bearings. In NTN fatigue life tests, these bearings achieved the same fatigue life as steel angular contact ball bearings; therefore, the values for steel bearings have been given as reference. Note: For bearings with a bore diameter larger than 120mm, consult NTN Engineering. B-69
●Four-Point Contact Ball Bearings QJ type B ra
r r
ra
D
d
da
Da
Equivalent bearing load dynamic Pa＝Fa static Poa＝ Fa
a
d 30∼90mm Boundary dimensions
Basic load ratings dynamic static dynamic static kN kgf
mm 1
Limiting speeds rpm
Ca
Coa
Ca
Coa
grease
oil
1.1
39.5
57.5
4,050
5,850
8,000
11,000
21
1.5
49.5
73.0
5,050
7,450
7,000
80 90
18 23
1.1 1.5
44.0 60.5
70.5 91.5
4,500 6,200
7,200 9,350
45
85 100
19 25
1.1 1.5
49.5 81.0 79.0 121
5,050 8,050
50
90 110
20 27
1.1 2
52.0 89.0 92.0 145
55
100 120
21 29
1.5 2
60
110 130
22 31
65
120 140
70
d
D
B
rs min
30
72
19
35
80
40
Bearing numbers
Abutment and fillet dimensions mm da Da ras
Load center mm a
Mass kg (approx.)
min
max
max
QJ306
37
65
1
30
0.42
9,300
QJ307
43.5
71.5
1.5
33
0.57
6,900 6,200
9,200 8,200
QJ208 QJ308
47 48.5
73 81.5
1 1.5
34.5 37.5
0.45 0.78
8,250 12,300
6,200 5,500
8,200 7,400
QJ209 QJ309
52 53.5
78 91.5
1 1.5
37.5 42
0.52 1.05
5,300 9,400
9,050 14,700
5,600 5,000
7,500 6,700
QJ210 QJ310
57 60
83 100
1 2
40.5 46
0.603 1.38
64.0 112 106 170
6,550 10,900
11,400 17,400
5,100 4,600
6,800 6,100
QJ211 QJ311
63.5 65
91.5 110
1.5 2
44.5 50.5
0.78 1.76
1.5 2.1
77.5 138 122 198
7,900 12,400
14,000 20,200
4,700 4,200
6,300 5,700
QJ212 QJ312
68.5 72
101.5 118
1.5 2
49 55
0.98 2.18
23 33
1.5 2.1
84.5 153 138 228
8,600 14,100
15,600 23,200
4,400 3,900
5,800 5,200
QJ213 QJ313
73.5 77
111.5 128
1.5 2
53.5 59
1.24 2.7
125 150
24 35
1.5 2.1
92.0 168 155 260
9,350 15,800
17,200 26,500
4,000 3,600
5,400 4,800
QJ214 QJ314
78.5 82
116.5 138
1.5 2
56.5 63.5
1.36 3.27
75
130 160
25 37
1.5 2.1
96.0 183 169 294
9,750 17,200
18,600 30,000
3,800 3,400
5,000 4,500
QJ215 QJ315
83.5 87
121.5 148
1.5 2
59 68
1.53 3.9
80
140 170
26 39
2 2.1
112 183
217 330
11,400 18,600
22,100 33,500
3,500 3,200
4,700 4,200
QJ216 QJ316
90 92
130 158
2 2
63.5 72
1.83 4.64
85
150 180
28 41
2 3
126 197
252 370
12,800 20,100
25,700 37,500
3,300 3,000
4,400 4,000
QJ217 QJ317
95 99
140 166
2 2.5
68 76.5
2.3 5.43
90
160 190
30 43
2 3
148 212
293 410
15,100 21,600
29,900 41,500
3,100 2,800
4,200 3,800
QJ218 100 QJ318 104
150 176
2 2.5
72 81
2.76 6.31
1 Smallest allowable dimension for chamfer dimension r. Note: 1. These bearings are also manufactured with a slot in the chamfer section of the outer ring to stop whirling. 2. This bearing is widely used in applications where the only type of load is axial. When considering it for use where radial loads are applied, consult NTN Engineering.
B-70
●Four-Point Contact Ball Bearings QJ type B ra
r r
ra
D
d
da
Da
Equivalent bearing load dynamic Pa＝Fa static Poa＝ Fa
a
d 95∼120mm Boundary dimensions
Basic load ratings dynamic static dynamic static kN kgf
mm d
D
1
Limiting speeds rpm
B
rs min
Ca
Coa
Ca
Coa
grease
oil
Bearing numbers
Abutment and fillet dimensions mm da Da ras min
max
Load center mm
max
a
Mass kg (approx.)
95
170 200
32 45
2.1 3
168 227
335 450
17,200 23,100
34,000 46,000
3,000 2,700
3,900 3,500
QJ219 107 QJ319 109
158 186
2 2.5
76.5 85
3.35 7.41
100
180 215
34 47
2.1 3
181 273
355 585
18,400 27,800
36,000 59,500
2,800 2,500
3,700 3,400
QJ220 112 QJ320 114
168 201
2 2.5
81 91
4.02 9.14
105
190 225
36 49
2.1 3
197 273
400 585
20,100 27,900
41,000 59,500
2,700 2,400
3,600 3,200
QJ221 117 QJ321 119
178 211
2 2.5
85 4.75 95.5 10.4
110
200 240
38 50
2.1 3
213 305
450 680
21,700 31,000
45,500 69,500
2,500 2,300
3,400 3,100
QJ222 122 QJ322 124
188 226
2 89.5 5.62 2.5 101 12
120
215 260
40 55
2.1 3
240 325
540 765
24,500 33,000
55,000 78,000
2,300 2,100
3,100 2,800
QJ224 132 QJ324 134
203 246
2 96.5 6.75 2.5 110 15.9
1 Smallest allowable dimension for chamfer dimension r. Note: 1. These bearings are also manufactured with a slot in the chamfer section of the outer ring to stop whirling. 2. This bearing is widely used in applications where the only type of load is axial. When considering it for use where radial loads are applied, consult NTN Engineering.
B-71
●Double Row Angular Contact Ball Bearings
B ra
r
ra
r D
d
Da
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e e X Y X Y 0.80 1 0.78 0.63 1.24 static Por＝Fr＋0.66Fa
da
a
d 10∼65mm Boundary dimensions dynamic mm 1
Basic load ratings static dynamic kN kgf
Limiting speeds static
Bearing numbers
rpm grease
oil
385
14,000
19,000
930
515
13,000
6.05 10.1
1,020 1,760
615 1,030
12.8 20.4
7.90 12.1
1,300 2,080
1 1.1
19.0 20.6
12.1 12.7
20.6 25.4
1 1.1
20.6 30.5
62 72
23.8 30.2
1 1.1
35
72 80
27 34.9
40
80 90
45
d
D
B
rs min
Cr
Cor
Cr
Cor
10
30
14.3
0.6
6.95
3.80
710
12
32
15.9
0.6
9.15
5.05
15
35 42
15.9 19
0.6 1
10.0 17.2
17
40 47
17.5 22.2
0.6 1
20
47 52
20.6 22.2
25
52 62
30
Abutment and fillet dimensions mm da Da ras
Load center mm
Mass kg
min
max
max
a
(approx.)
5200
14.5
25.5
0.6
17.5
0.049
17,000
5201
16.5
27.5
0.6
19
0.057
11,000 9,900
15,000 13,000
5202 5302
19.5 20.5
30.5 36.5
0.6 1
21 26
0.064 0.132
805 1,230
9,900 9,000
13,000 12,000
5203 5303
21.5 22.5
35.5 41.5
0.6 1
24 28.5
0.096 0.181
1,940 2,110
1,230 1,290
8,800 8,000
12,000 11,000
5204 5304
25.5 27
41.5 45
1 1
28 30.5
0.153 0.217
14.3 20.5
2,100 3,100
1,450 2,090
7,300 6,700
9,800 8,900
5205 5305
30.5 32
46.5 55
1 1
31.5 36.5
0.175 0.362
28.6 39.5
20.4 27.5
2,920 4,050
2,080 2,800
6,300 5,700
8,400 7,600
5206 5306
35.5 37
56.5 65
1 1
36.5 43
0.286 0.553
1.1 1.5
38.0 49.5
27.8 35.0
3,850 5,050
2,830 3,550
5,500 5,000
7,400 6,600
5207 5307
42 43.5
65 71.5
1 1.5
42.5 48.5
0.436 0.766
30.2 36.5
1.1 1.5
42.5 60.5
32.5 44.0
4,350 6,150
3,300 4,500
4,900 4,400
6,600 5,900
5208 5308
47 48.5
73 81.5
1 1.5
47.5 53.5
0.59 1.01
85 100
30.2 39.7
1.1 1.5
48.0 72.5
37.0 54.0
4,900 7,400
3,750 5,500
4,400 4,000
5,900 5,300
5209 5309
52 53.5
78 91.5
1 1.5
50.5 60
0.64 1.34
50
90 110
30.2 44.4
1.1 2
51.0 85.5
42.0 64.5
5,200 8,700
4,250 6,600
4,000 3,600
5,300 4,800
5210 5310
57 60
1 2
54 65.5
0.689 1.81
55
100 120
33.3 49.2
1.5 2
63.0 106
53.0 82.0
6,450 10,800
5,400 8,400
3,600 3,300
4,900 4,400
5211 5311
63.5 91.5 65 110
1.5 2
60.5 73
0.986 2.32
60
110 130
36.5 54
1.5 2.1
71.5 122
58.5 95.5
7,300 12,400
5,950 9,750
3,400 3,000
4,500 4,000
5212 5312
68.5 101.5 72 118
1.5 2
65.5 79.5
1.27 3.05
65
120 140
38.1 58.7
1.5 2.1
83.5 138
72.5 109
8,500 14,000
7,400 11,200
3,100 2,800
4,200 3,700
5213 5313
73.5 111.5 77 128
1.5 2
71 84.5
1.57 3.96
1 Smallest allowable dimension for chamfer dimension r.
B-72
83 100
●Double Row Angular Contact Ball Bearings
B ra
r
ra
r D
d
Da
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e e X Y X Y 0.80 1 0.78 0.63 1.24 static Por＝Fr＋0.66Fa
da
a
d 70∼100mm Boundary dimensions dynamic mm 1
Basic load ratings static dynamic kN kgf
Limiting speeds static
Bearing numbers
rpm
Abutment and fillet dimensions mm da Da ras
Load center mm
Mass
max
a
(approx.)
kg
Cr
Cor
grease
oil
79.5 125
9,250 15,800
8,100 12,700
2,900 2,600
3,900 3,500
5214 5314
78.5 116.5 82 138
1.5 2
74.5 93
1.8 4.74
80.5 141
9,200 17,200
8,200 14,400
2,700 2,400
3,600 3,200
5215 5315
83.5 121.5 87 148
1.5 2
78 98
1.9 5.65
95.5
10,800
9,700
2,500
3,400
5216
90
130
2
83.5
2.39
106
11,400
10,900
2,400
3,200
5217
95
140
2
91
3.06
140
129
14,300
13,100
2,200
3,000
5218 100
150
2
95.5
3.73
2.1
159
148
16,200
15,000
2,100
2,800
5219 107
158
2
101
4.86
2.1
178
167
18,200
17,100
2,000
2,700
5220 112
168
2
108
5.94
d
D
B
rs min
Cr
70
125 150
39.7 63.5
1.5 2.1
90.5 155
75
130 160
41.3 68.3
1.5 2.1
90.0 168
80
140
44.4
2
106
85
150
49.2
2
112
90
160
52.4
2
95
170
55.6
100
180
60.3
Cor
1 Smallest allowable dimension for chamfer dimension r.
B-73
min
max
●Double Row Angular Contact Ball Bearings
B r r D
d
a Shielded type (ZZ)
Non-contact sealed type (LLB)
Contact sealed type (LLU)
d 10∼40mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN
d
D
B
rs min
10
30
14.3
12
32
15
1
Limiting speeds
2
Bearing numbers
static kgf
rpm Cor
grease
oil
ZZ,LLB,LLU
Z,LB
sealed
non-contact contact type type
Cr
Cor
Cr
0.6
6.95
3.80
710
385
14,000
19,000
5200AZZ
LLB
LLU
15.9
0.6
7.60
4.50
775
455
13,000
17,000
5201AZZ
LLB
LLU
35 42
15.9 19
0.6 1
8.20 14.2
5.25 8.85
835 1,450
535 900
11,000 9,900
15,000 13,000
5202BZZ 5302AZZ
LLB LLB
LLU LLU
17
40 47
17.5 22.2
0.6 1
10.8 17.4
7.10 10.4
1,100 1,770
720 1,060
9,900 9,000
13,000 12,000
5203BZZ 5303CZZ
LLB LLB
LLU LLU
20
47 52
20.6 22.2
1 1.1
15.8 19.1
10.1 12.4
1,610 1,940
1,030 1,260
8,800 8,000
12,000 11,000
5204BZZ 5304BZZ
LLB LLB
LLU LLU
25
52 62
20.6 25.4
1 1.1
18.2 26.5
13.2 17.9
1,850 2,700
1,350 1,830
7,300 6,700
9,800 8,900
5205BZZ 5305CZZ
LLB LLB
LLU LLU
30
62 72
23.8 30.2
1 1.1
26.1 33.0
19.7 24.3
2,660 3,350
2,010 2,480
6,300 5,700
8,400 7,600
5206CZZ 5306AZZ
LLB LLB
LLU LLU
35
72 80
27 34.9
1.1 1.5
33.0 49.5
24.5 35.0
3,350 5,050
2,500 3,550
5,500 5,000
7,400 6,600
5207AZZ 5307AZZ
LLB LLB
LLU LLU
40
80 90
30.2 36.5
1.1 1.5
40.5 55.0
32.0 40.0
4,100 5,600
3,250 4,100
4,900 4,400
6,600 5,900
5208AZZ 5308AZZ
LLB LLB
LLU LLU
1 Smallest allowable dimension for chamfer dimension r. 2 This bearing number is for double sealed and double shielded type bearings, but single sealed and single shielded type are also available.
B-74
●Double Row Angular Contact Ball Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e e X Y X Y 0.80 1 0.78 0.63 1.24
ra
Da
da
static Por＝Fr＋0.66Fa
Abutment and fillet dimensions mm da min
max
Da
ras
max
max
Load center mm
Mass
a
(approx.)
kg
14.5
16
25.5
0.6
16.5
0.049
16.5
17
27.5
0.6
18.5
0.057
19.5 20.5
20 23
30.5 36.5
0.6 1
20.5 24
0.064 0.132
21.5 22.5
23 25
35.5 41.5
0.6 1
23 27
0.096 0.181
25.5 27
27 28.5
41.5 45
1 1
27.5 29.5
0.153 0.217
30.5 32
32 35
46.5 55
1 1
30.5 35.5
0.175 0.362
35.5 37
39 43
56.5 65
1 1
36.5 41
0.286 0.553
42 43.5
45 47
65 71.5
1 1.5
42 47.5
0.436 0.766
47 48.5
51 54
73 81.5
1 1.5
46 52.5
0.59 1.01
B-75
●Self-Aligning Ball Bearings
1. Design features and characteristics
2. Standard cage types
The outer ring raceway of self-aligning ball bearings forms a spherical surface whose center is common to the bearing center. The inner ring of the bearing has two raceways. The balls, cage, and inner ring of these bearings are capable of a shifting in order to compensate for a certain degree of misalignment with the outer rings. As a result, the bearing is able to align itself and compensate for shaft / housing finishing unevenness, bearing fitting error, and other sources of misalignment as shown in Diagram 1. However, since axial load capacity is limited, self-aligning bearings are not suitable for applications with heavy axial loads. Furthermore, if an adapter is used on the tapered bore of the inner diameter, installation and disassembly are much simpler and for this reason adapters are often used on equipment with drive shafts.
Self aligning ball bearings use pressed cages with the exception of the 1200-1206 series which use molded resin cages. The material characteristics of the resin cages make them unsuitable for use in applications where temperatures exceed 120˚C.
3. Ball protrusion Bearings with part numbers listed in Diagram 2 below have balls which protrude slightly from the bearing face. Their degree of protrusion is listed in Diagram 2.
B1 B
Units mm
Allowable misalignment
Bearing number 1318（K） 1319（K） 1320（K） 1321 1322（K）
Width dimension B 43 45 47 49 50
Total width dimension B1 45 48 52 54 55
Diagram 2.
Diagram 1.
4. Allowable misalignment angle Listed below are the allowable misalignment angles for bearings with self-aligning characteristics when placed under normal load conditions. This degree of allowable misalignment may be limited by the design of structures around the bearing. Allowable misalignment under normal loads (loads equivalent to 0.09 Cr): 0.07 rad (4˚)
B-77
●Self-Aligning Ball Bearings
B ra
r
ra
r d
d
D
Cylindrical bore
Da
da
Tapered bore taper 1:12
d 10∼35mm Boundary dimensions mm
Basic load ratings dynamic static dynamic static kN kgf
Limiting speeds
Bearing numbers
rpm
2
Abutment and fillet dimensions mm da Da ras
Cor
grease
oil
cylindrical bore
tapered bore
560 745 740 1,030
122 162 165 219
21,000 19,000 18,000 17,000
24,000 23,000 21,000 20,000
1200 2200 1300 2300
― ― ― ―
14 14 14 14
26 26 31 31
0.6 0.6 0.6 0.6
1.27 1.73 2.16 2.71
570 775 965 1,200
130 177 221 277
18,000 17,000 16,000 15,000
22,000 20,000 18,000 17,000
1201 2201 1301 2301
― ― ― ―
16 16 17 17
28 28 32 32
0.6 0.6 1 1
7.45 7.70 9.55 12.0
1.75 1.85 2.30 2.90
760 785 975 1,230
178 188 234 295
16,000 15,000 13,000 13,000
19,000 18,000 16,000 15,000
1202 2202 1302 2302
― ― ― ―
19 19 20 20
31 31 37 37
0.6 0.6 1 1
0.6 0.6 1 1
7.90 9.80 12.5 14.4
2.01 2.41 3.20 3.55
805 995 1,280 1,470
205 246 325 365
14,000 13,000 12,000 11,000
17,000 16,000 14,000 14,000
1203 2203 1303 2303
― ― ― ―
21 21 22 22
36 36 42 42
0.6 0.6 1 1
14 18 15 21
1 1 1.1 1.1
9.90 12.6 12.4 18.1
2.61 3.30 3.35 4.70
1,010 1,280 1,270 1,850
266 335 340 480
13,000 12,000 11,000 10,000
15,000 14,000 13,000 12,000
1204 2204 1304 2304
1204K 2204K 1304K 2304K
25 25 26.5 26.5
42 42 45.5 45.5
1 1 1 1
25
52 52 62 62
15 18 17 24
1 1 1.1 1.1
12.1 12.3 18.0 24.4
3.30 3.45 5.00 6.60
1,230 1,250 1,830 2,490
335 350 510 670
11,000 10,000 9,100 8,500
13,000 12,000 11,000 10,000
1205 2205 1305 2305
1205K 2205K 1305K 2305K
30 30 31.5 31.5
47 47 55.5 55.5
1 1 1 1
30
62 62 72 72
16 20 19 27
1 1 1.1 1.1
15.6 15.2 21.3 31.5
4.65 4.50 6.30 8.75
1,590 1,550 2,170 3,200
475 460 645 895
9,200 8,600 7,700 7,200
11,000 10,000 9,100 8,500
1206 2206 1306 2306
1206K 2206K 1306K 2306K
35 35 36.5 36.5
57 57 65.5 65.5
1 1 1 1
35
72 72 80 80
17 23 21 31
1.1 1.1 1.5 1.5
15.8 21.5 25.1 39.5
5.10 6.60 7.85 11.3
1,610 2,190 2,560 4,000
520 670 800 1,150
8,000 7,500 6,800 6,300
9,400 8,800 8,000 7,400
1207 2207 1307 2307
1207K 2207K 1307K 2307K
41.5 41.5 43 43
65.5 65.5 72 72
1 1 1.5 1.5
d
D
B
rs min
10
30 30 35 35
9 14 11 17
12
32 32 37 37
1
Cr
Cor
Cr
0.6 0.6 0.6 0.6
5.50 7.30 7.25 10.1
1.19 1.59 1.62 2.15
10 14 12 17
0.6 0.6 1 1
5.60 7.60 9.45 11.8
15
35 35 42 42
11 14 13 17
0.6 0.6 1 1
17
40 40 47 47
12 16 14 19
20
47 47 52 52
min
1 Smallest allowable dimension for chamfer dimension r. 2 "K" indicates bearings have tapered bore with a taper ratio of 1: 12.
B-78
max
max
●Self-Aligning Ball Bearings
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e X Y X Y 1 Y1 0.65 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
Constant
Axial load factors
Mass kg cylindrical bore tapered bore
e
Y1
Y2
Yo
0.32 0.64 0.34 0.67
2 0.98 1.85 0.95
3.09 1.52 2.87 1.46
2.09 1.03 1.94 0.99
0.033 0.047 0.058 0.083
― ― ― ―
0.36 0.58 0.33 0.61
1.76 1.09 1.91 1.03
2.73 1.69 2.95 1.59
1.85 1.14 2 1.08
0.04 0.051 0.066 0.091
― ― ― ―
0.33 0.50 0.34 0.52
1.91 1.25 1.86 1.22
2.95 1.94 2.88 1.88
2 1.31 1.95 1.27
0.049 0.06 0.092 0.114
― ― ― ―
0.31 0.51 0.32 0.52
2.03 1.23 1.97 1.22
3.14 1.90 3.06 1.88
2.12 1.29 2.07 1.28
0.072 0.088 0.128 0.156
― ― ― ―
0.29 0.49 0.29 0.51
2.2 1.3 2.16 1.23
3.4 2.01 3.34 1.9
2.3 1.36 2.26 1.29
0.116 0.14 0.16 0.206
0.114 0.137 0.158 0.201
0.28 0.41 0.28 0.48
2.28 1.55 2.28 1.32
3.53 2.39 3.53 2.05
2.39 1.62 2.39 1.39
0.138 0.157 0.255 0.334
0.135 0.153 0.251 0.326
0.25 0.38 0.26 0.44
2.55 1.64 2.40 1.42
3.94 2.53 3.72 2.2
2.67 1.72 2.52 1.49
0.217 0.256 0.383 0.496
0.213 0.25 0.377 0.485
0.23 0.37 0.25 0.46
2.71 1.69 2.48 1.37
4.2 2.61 3.84 2.13
2.84 1.77 2.60 1.44
0.317 0.392 0.5 0.671
0.312 0.382 0.492 0.653
(approx.)
B-79
●Self-Aligning Ball Bearings
B ra
r
ra
r d
d
D
Cylindrical bore
Da
da
Tapered bore taper 1:12
d 40∼75mm Boundary dimensions mm
Basic load ratings dynamic static dynamic static kN kgf
Limiting speeds
Bearing numbers
rpm
2
Abutment and fillet dimensions mm da Da ras
Cor
Cr
Cor
grease
oil
cylindrical bore
tapered bore
min
max
max
19.3 22.3 29.6 45.0
6.55 7.35 9.70 13.5
1,970 2,270 3,000 4,600
665 750 990 1,380
7,100 6,700 6,000 5,600
8,400 7,900 7,000 6,600
1208 2208 1308 2308
1208K 2208K 1308K 2308K
46.5 46.5 48 48
73.5 73.5 82 82
1 1 1.5 1.5
1.1 1.1 1.5 1.5
21.9 23.2 38.0 54.0
7.35 8.15 12.7 16.7
2,230 2,360 3,900 5,500
750 830 1,300 1,700
6,400 6,000 5,400 5,000
7,500 7,100 6,300 5,900
1209 2209 1309 2309
1209K 2209K 1309K 2309K
51.5 51.5 53 53
78.5 78.5 92 92
1 1 1.5 1.5
20 23 27 40
1.1 1.1 2 2
22.7 23.2 43.5 64.5
8.10 8.45 14.1 20.2
2,320 2,370 4,400 6,550
830 865 1,440 2,060
5,800 5,500 4,900 4,600
6,800 6,400 5,800 5,400
1210 2210 1310 2310
1210K 2210K 1310K 2310K
56.5 83.5 56.5 83.5 59 101 59 101
1 1 2 2
55
100 100 120 120
21 25 29 43
1.5 1.5 2 2
26.8 26.5 51.5 75.5
10.0 9.90 17.9 24.0
2,730 2,700 5,250 7,700
1,020 1,010 1,820 2,450
5,300 5,000 4,500 4,200
6,200 5,800 5,200 4,900
1211 2211 1311 2311
1211K 2211K 1311K 2311K
63 63 64 64
92 92 111 111
1.5 1.5 2 2
60
110 110 130 130
22 28 31 46
1.5 1.5 2.1 2.1
30.0 34.0 57.0 87.0
11.5 12.6 20.8 28.2
3,100 3,450 5,850 8,850
1,180 1,290 2,130 2,880
4,900 4,600 4,100 3,800
5,800 5,400 4,800 4,500
1212 2212 1312 2312
1212K 2212K 1312K 2312K
68 68 71 71
102 102 119 119
1.5 1.5 2 2
65
120 120 140 140
23 31 33 48
1.5 1.5 2.1 2.1
31.0 43.5 62.0 96.0
12.5 16.4 22.9 32.5
3,150 4,450 6,350 9,800
1,280 1,670 2,330 3,300
4,500 4,200 3,800 3,600
5,300 5,000 4,500 4,200
1213 2213 1313 2313
1213K 2213K 1313K 2313K
73 73 76 76
112 112 129 129
1.5 1.5 2 2
70
125 125 150 150
24 31 35 51
1.5 1.5 2.1 2.1
34.5 44.0 74.5 109
13.8 17.1 27.7 37.5
3,550 4,500 7,600 11,100
1,410 1,740 2,830 3,850
4,200 3,900 3,500 3,300
4,900 4,600 4,200 3,900
1214 2214 1314 2314
― ― ― ―
78 78 81 81
117 117 139 139
1.5 1.5 2 2
75
130 130 160 160
25 31 37 55
1.5 1.5 2.1 2.1
39.0 44.5 79.5 123
15.7 17.8 30.0 43.0
3,950 4,500 8,100 12,500
1,600 1,820 3,050 4,350
3,900 3,700 3,300 3,100
4,600 4,300 3,900 3,600
1215 2215 1315 2315
1215K 2215K 1315K 2315K
83 83 86 86
122 122 149 149
1.5 1.5 2 2
1
d
D
B
rs min
40
80 80 90 90
18 23 23 33
1.1 1.1 1.5 1.5
45
85 85 100 100
19 23 25 36
50
90 90 110 110
Cr
1 Smallest allowable dimension for chamfer dimension r. 2 "K" indicates bearings have tapered bore with a taper ratio of 1: 12.
B-80
●Self-Aligning Ball Bearings
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e X Y X Y 1 Y1 0.65 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
Constant
Axial load factors
Mass kg cylindrical bore tapered bore
e
Y1
Y2
Yo
0.22 0.33 0.25 0.43
2.81 1.91 2.57 1.45
4.35 2.95 3.98 2.25
2.95 2.00 2.69 1.52
0.414 0.493 0.709 0.918
0.407 0.482 0.698 0.895
0.21 0.30 0.25 0.41
2.99 2.07 2.56 1.53
4.63 3.20 3.95 2.36
3.13 2.17 2.68 1.60
0.457 0.54 0.953 1.23
0.448 0.528 0.938 1.2
0.21 0.28 0.23 0.42
3.07 2.23 2.7 1.49
4.75 3.45 4.19 2.3
3.21 2.33 2.83 1.56
0.515 0.583 1.2 1.63
0.504 0.569 1.18 1.59
0.20 0.28 0.23 0.41
3.19 2.24 2.71 1.53
4.94 3.47 4.20 2.37
3.34 2.35 2.84 1.6
0.692 0.787 1.58 2.1
0.679 0.769 1.56 2.05
0.18 0.28 0.22 0.40
3.41 2.26 2.85 1.56
5.27 3.5 4.42 2.41
3.57 2.37 2.99 1.63
0.879 1.08 1.96 2.59
0.864 1.06 1.93 2.52
0.17 0.28 0.23 0.38
3.70 2.26 2.74 1.64
5.73 3.5 4.25 2.54
3.88 2.37 2.87 1.72
1.13 1.44 2.42 3.2
1.11 1.41 2.38 3.12
0.18 0.26 0.22 0.38
3.48 2.38 2.83 1.67
5.38 3.68 4.37 2.59
3.64 2.49 2.96 1.75
1.24 1.52 2.99 3.92
0.17 0.25 0.22 0.38
3.61 2.52 2.81 1.65
5.58 3.89 4.35 2.55
3.78 2.63 2.95 1.72
1.33 1.58 3.55 4.78
(approx.)
― ― ― ― 1.31 1.54 3.5 4.66 B-81
●Self-Aligning Ball Bearings
B ra
r
ra
r d
d
D
Cylindrical bore
Da
da
Tapered bore taper 1:12
d 80∼110mm Boundary dimensions mm
Basic load ratings dynamic static dynamic static kN kgf
Limiting speeds
Bearing numbers
rpm
2
Abutment and fillet dimensions mm da Da ras
Cor
grease
oil
cylindrical bore
tapered bore
4,050 4,950 9,000 13,100
1,730 2,030 3,400 4,600
3,700 3,400 3,100 2,900
4,300 4,000 3,600 3,400
1216 2216 1316 2316
1216K 2216K 1316K 2316K
89 89 91 91
131 131 159 159
2 2 2 2
20.8 23.6 38.0 51.5
5,000 5,950 9,950 14,300
2,120 2,400 3,850 5,250
3,500 3,200 2,900 2,700
4,100 3,800 3,400 3,200
1217 2217 1317 2317
1217K 2217K 1317K 2317K
94 94 98 98
141 141 167 167
2 2 2.5 2.5
57.0 70.0 116 152
23.5 28.7 44.5 57.5
5,800 7,150 11,900 15,500
2,390 2,930 4,550 5,850
3,300 3,100 2,700 2,600
3,800 3,600 3,200 3,000
1218 2218 1318 2318
1218K 2218K 1318K 2318K
99 99 103 103
151 151 177 177
2 2 2.5 2.5
2.1 2.1 3 3
64.0 83.5 132 165
27.1 34.5 51.0 64.5
6,500 8,500 13,400 16,800
2,770 3,500 5,200 6,550
3,100 2,900 2,600 2,400
3,600 3,400 3,000 2,800
1219 2219 1319 2319
1219K 2219K 1319K 2319K
106 106 108 108
159 159 187 187
2 2 2.5 2.5
34 46 47 73
2.1 2.1 3 3
69.0 94.0 143 192
29.7 38.5 57.5 79.0
7,050 9,600 14,600 19,600
3,050 3,900 5,850 8,100
2,900 2,700 2,400 2,300
3,400 3,200 2,900 2,700
1220 2220 1320 2320
1220K 2220K 1320K 2320K
111 111 113 113
169 169 202 202
2 2 2.5 2.5
105
190 190 225 225
36 50 49 77
2.1 2.1 3 3
74.5 109 156 205
32.5 45.0 64.5 87.0
7,600 11,100 15,900 20,900
3,300 4,550 6,600 8,850
2,800 2,600 2,300 2,200
3,300 3,100 2,700 2,600
1221 2221 1321 2321
― ― ― ―
116 116 118 118
179 179 212 212
2 2 2.5 2.5
110
200 200 240 240
38 53 50 80
2.1 2.1 3 3
80.5 124 164 217
35.5 51.5 71.5 94.5
8,200 12,700 16,700 22,100
3,600 5,250 7,300 9,650
2,600 2,500 2,200 2,100
3,100 2,900 2,600 2,400
1222 2222 1322 2322
1222K 2222K 1322K 2322K
121 121 123 123
189 189 227 227
2 2 2.5 2.5
d
D
B
rs min
80
140 140 170 170
26 33 39 58
85
150 150 180 180
1
Cr
Cor
2 2 2.1 2.1
40.0 48.5 88.5 128
17.0 19.9 33.0 45.0
28 36 41 60
2 2 3 3
49.0 58.0 97.5 140
90
160 160 190 190
30 40 43 64
2 2 3 3
95
170 170 200 200
32 43 45 67
100
180 180 215 215
Cr
min
1 Smallest allowable dimension for chamfer dimension r. 2 "K" indicates bearings have tapered bore with a taper ratio of 1: 12.
B-82
max
max
●Self-Aligning Ball Bearings
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e X Y X Y 1 Y1 0.65 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
Constant
Axial load factors
Mass kg cylindrical bore tapered bore
e
Y1
Y2
Yo
0.16 0.25 0.22 0.39
3.9 2.52 2.92 1.63
6.04 3.9 4.52 2.52
4.09 2.64 3.06 1.71
1.65 1.99 4.17 5.65
1.62 1.95 4.11 5.51
0.17 0.25 0.21 0.37
3.67 2.49 2.94 1.71
5.68 3.86 4.55 2.64
3.85 2.61 3.08 1.79
2.06 2.54 4.96 6.55
2.03 2.49 4.89 6.39
0.17 0.27 0.22 0.38
3.76 2.35 2.8 1.67
5.82 3.64 4.34 2.58
3.94 2.47 2.94 1.75
2.51 3.19 5.78 7.75
2.47 3.12 5.69 7.56
0.17 0.27 0.23 0.38
3.74 2.36 2.76 1.67
5.79 3.65 4.27 2.59
3.92 2.47 2.89 1.75
3.1 3.89 6.69 9.05
3.05 3.8 6.59 8.83
0.17 0.27 0.24 0.37
3.64 2.35 2.65 1.69
5.64 3.64 4.11 2.61
3.82 2.46 2.78 1.77
3.7 4.65 8.3 11.5
3.64 4.54 8.19 11.2
0.18 0.28 0.23 0.38
3.56 2.25 2.73 1.67
5.52 3.49 4.22 2.58
3.73 2.36 2.86 1.75
4.34 6.07 10 13.2
― ― ― ―
0.18 0.28 0.22 0.37
3.44 2.24 2.85 1.71
5.33 3.47 4.4 2.65
3.61 2.35 2.98 1.79
5.15 7.1 11.8 15.8
5.07 6.94 11.7 15.4
(approx.)
B-83
●Adapters (for self-aligning ball bearings) B2 ra
S1
B1 d1 d2
db da
Da
d 17∼50mm Boundary dimensions
Bearing numbers
1
Abutment and fillet dimensions
mm
Mass
mm db
S1
Da
ras
min
max
min
max
max
(approx.)
d1
B1
d2
17
24 28 28 31
32 32 32 32
7 7 7 7
1204K;H 204 2204K;H 304 1304K;H 304 2304K;H2304
23 24 24 24
27 28 31 28
5 5 8 5
41 41 45 45
1 1 1 1
0.041 0.045 0.045 0.049
20
26 29 29 35
38 38 38 38
8 8 8 8
1205K;H 205X 2205K;H 305X 1305K;H 305X 2305K;H2305X
28 29 29 29
33 33 37 34
5 5 6 5
46 46 55 55
1 1 1 1
0.07 0.075 0.075 0.087
25
27 31 31 38
45 45 45 45
8 8 8 8
1206K;H 206X 2206K;H 306X 1306K;H 306X 2306K;H2306X
33 34 34 35
39 39 44 40
5 5 6 5
56 56 65 65
1 1 1 1
0.099 0.109 0.109 0.126
30
29 35 35 43
52 52 52 52
9 9 9 9
1207K;H 207X 2207K;H 307X 1307K;H 307X 2307K;H2307X
38 39 39 40
46 45 50 46
5 5 7 5
65 65 71.5 71.5
1 1 1.5 1.5
0.125 0.142 0.142 0.165
35
31 36 36 46
58 58 58 58
10 10 10 10
1208K;H 208X 2208K;H 308X 1308K;H 308X 2308K;H2308X
44 44 44 45
52 50 56 52
5 5 5 5
73 73 81.5 81.5
1 1 1.5 1.5
0.174 0.189 0.189 0.224
40
33 39 39 50
65 65 65 65
11 11 11 11
1209K;H 209X 2209K;H 309X 1309K;H 309X 2309K;H2309X
49 49 49 50
57 57 61 58
5 8 5 5
78 78 91.5 91.5
1 1 1.5 1.5
0.227 0.248 0.248 0.28
45
35 42 42 55
70 70 70 70
12 12 12 12
1210K;H 210X 2210K;H 310X 1310K;H 310X 2310K;H2310X
53 54 54 56
62 63 67 65
5 10 5 5
1 1 2 2
0.274 0.303 0.303 0.362
37
75
12
1211K;H 211X
60
70
6
1.5
0.308
50
B2
kg
da
83 83 100 100 91.5
1 Refers to adapter mass. Note: 1. For bearing dimensions, basic rated loads, allowable rotations, and mass, refer to pages B-80 to B-82. 2. Adapters for series 12 bearings can also be used with H2 and H3 series bearings. Caution: the B1 dimension of H3 series bearings is longer than that of H2 series bearings. 3. Adapter numbers which are appended with the code "X" indicate narrow slit type adapters which use washer with straight inner tabs. 4. For adapter locknut and washer dimensions, please refer to pages D-2 to D-7, and D-12 to D-14.
B-84
●Adapters (for self-aligning ball bearings) B2 ra
S1
B1 d1 d2
db da
Da
d 50∼85mm Boundary dimensions
Bearing numbers
1
Abutment and fillet dimensions
mm
Mass
mm
kg
da
db
S1
Da
ras
min
max
min
max
max
(approx.)
d1
B1
d2
B2
50
45 45 59
75 75 75
12 12 12
2211K;H 311X 1311K;H 311X 2311K;H2311X
60 60 61
69 73 71
11 6 6
91.5 110 110
1.5 2 2
0.345 0.345 0.42
55
38 47 47 62
80 80 80 80
13 13 13 13
1212K;H 212X 2212K;H 312X 1312K;H 312X 2312K;H2312X
64 65 65 66
76 75 79 77
5 9 5 5
101.5 101.5 118 118
1.5 1.5 2 2
0.346 0.394 0.394 0.481
60
40 50 50 65
85 85 85 85
14 14 14 14
1213K;H 213X 2213K;H 313X 1313K;H 313X 2313K;H2313X
70 70 70 72
83 81 85 84
5 8 5 5
111.5 111.5 128 128
1.5 1.5 2 2
0.401 0.458 0.458 0.557
65
43 55 55 73
98 98 98 98
15 15 15 15
1215K;H 215X 2215K;H 315X 1315K;H 315X 2315K;H2315X
80 80 80 82
93 93 97 96
5 12 5 5
121.5 121.5 148 148
1.5 1.5 2 2
0.707 0.831 0.831 1.05
70
46 59 59 78
105 105 105 105
17 17 17 17
1216K;H 216X 2216K;H 316X 1316K;H 316X 2316K;H2316X
85 86 86 87
100 98 103 103
5 12 5 5
130 130 158 158
2 2 2 2
0.882 1.03 1.03 1.28
75
50 63 63 82
110 110 110 110
18 18 18 18
1217K;H 217X 2217K;H 317X 1317K;H 317X 2317K;H2317X
90 91 91 94
106 104 110 110
6 12 6 6
140 140 166 166
2 2 2.5 2.5
1.02 1.18 1.18 1.45
80
52 65 65 86
120 120 120 120
18 18 18 18
1218K;H 218X 2218K;H 318X 1318K;H 318X 2318K;H2318X
95 96 96 99
111 112 116 117
6 10 6 6
150 150 176 176
2 2 2.5 2.5
1.19 1.37 1.37 1.69
85
55 68
125 125
19 19
1219K;H 219X 2219K;H 319X
101 102
118 117
7 9
158 158
2 2
1.37 1.56
1 Refers to adapter mass. Note: 1. For bearing dimensions, basic rated loads, allowable rotations, and mass, refer to pages B-80 to B-82. 2. Adapters for series 12 bearings can also be used with H2 and H3 series bearings. Caution: the B1 dimension of H3 series bearings is longer than that of H2 series bearings. 3. Adapter numbers which are appended with the code "X" indicate narrow slit type adapters which use washer with straight inner tabs. 4. For adapter locknut and washer dimensions, please refer to pages D-2 to D-7, and D-12 to D-14.
B-85
●Adapters (for self-aligning ball bearings) B2 ra
S1
B1 d1 d2
db da
Da
d 85∼100mm Boundary dimensions
Bearing numbers
1
Abutment and fillet dimensions
mm
Mass
mm
kg
da
db
S1
Da
ras
min
max
min
max
max
(approx.)
d1
B1
d2
B2
85
68 90
125 125
19 19
1319K;H 319X 2319K;H2319X
102 105
123 123
7 7
186 186
2.5 2.5
1.56 1.92
90
58 71 71 97
130 130 130 130
20 20 20 20
1220K;H 220X 2220K;H 320X 1320K;H 320X 2320K;H2320X
106 107 107 110
125 123 130 129
7 8 7 7
168 168 201 201
2 2 2.5 2.5
1.49 1.69 1.69 2.15
100
63 77 77 105
145 145 145 145
21 21 21 21
1222K;H 222X 2222K;H 322X 1322K;H 322X 2322K;H2322X
116 117 117 121
138 137 150 142
7 6 9 7
188 188 226 226
2 2 2.5 2.5
1.93 2.18 2.18 2.74
1 Refers to adapter mass. Note: 1. For bearing dimensions, basic rated loads, allowable rotations, and mass, refer to pages B-80 to B-82. 2. Adapters for series 12 bearings can also be used with H2 and H3 series bearings. Caution: the B1 dimension of H3 series bearings is longer than that of H2 series bearings. 3. Adapter numbers which are appended with the code "X" indicate narrow slit type adapters which use washer with straight inner tabs. 4. For adapter locknut and washer dimensions, please refer to pages D-2 to D-7, and D-12 to D-14.
B-86
●Adapters
B-87
●Cylindrical Roller Bearings
Cylindrical roller bearing
E Type cylindrical roller bearing
Double row cylindrical roller bearing
Four row cylindrical roller bearing
1. Types, design features, and characteristics dimensions are identical to standard type. HT type has a large axial load capacity, and HL type provides extended wear life in conditions where the development of a lubricating film inside the bearing is difficult. Double and multiple row bearing arrangements are also available. For extremely heavy load applications, the non-separable full complement SL type bearing offers special advantages. Table 1 shows the various types and characteristics of single row cylindrical roller bearings. Table 2 shows the characteristics of non-standard type cylindrical roller bearings.
Since the rolling elements in cylindrical roller bearings make line contact with raceways, these bearings can accommodate heavy radial loads. The rollers are guided by ribs on either the inner or outer ring, therefore these bearings are also suitable for high speed applications. Furthermore, cylindrical roller bearings are separable, and relatively easy to install and disassemble even when interference fits are required. Among the various types of cylindrical roller bearings, Type E has a high load capacity and its boundary
Table 1 Cylindrical roller bearing types and characteristics Type code
NU type
Design
Characteristics
NU type
¡NU type outer rings have double ribs; outer ring and roller as well as cage can be separated from inner ring. N type inner ring have double ribs; inner ring and roller as well as cage can be separated from outer ring. ¡Unable to accommodate even the slightest axial loads. ¡This type is extremely suitable for, and widely used as, the floating side bearing.
N type
N type
NJ type
NJ type
NF type
¡NJ type has double ribs on outer ring, single rib on inner ring; NF type has single rib on outer ring, and double rib on inner ring. ¡Can receive single direction axial loads. ¡When there is no distinction between the fixed side and floating side bearing, can be used as a pair in close proximity.
NF type
NUP type NUP type
NH type (NJ + HJ)
¡NUP type has a collar ring attached to the ribless side of the inner ring; NH type is NJ type with an L type collar ring attached. All of these collar rings are separable, and therefore it is necessary to fix the inner ring axially. ¡Can accommodate axial loads in either direction. ¡Widely used as the shaft's fixed-side bearing.
NH type
B-89
●Cylindrical Roller Bearings
Table 2 Non-standard type cylindrical roller bearing characteristics Bearing type
Characteristics ¡Boundary dimensions identical to standard type; load capacity can be increased by increasing roller diameter, roller length, or roller number. ¡Identified by addition of "E" to end of basic roller number. ¡Enables compact design due to its high load rating. ¡Rollers' inscribed circle diameter differs from standard type rollers and therefore cannot be interchanged.
E Type cylindrical roller bearing
180mm
100mm
NU2220E E type Standard type
215mm
NU320
Cr=335kN Cr=315kN E type bearing Standard type bearing
120mm
NU224E Cr=335kN E type bearing
Remarks: In the dimension tables, both E type and standard type are listed, but in the future JIS will change to E type.
Large axial load use cylindrical roller bearings (HT type)
Double row cylindrical roller bearings
Four row cylindrical roller bearings
SL type cylindrical roller bearings
¡Can accommodate larger axial loads than standard type thanks to improved geometry of the rib roller end surface. ¡Please consult NTN Engineering concerning the many factors which require consideration, such as load, lubricant, and installation conditions.
¡NN type and NNU type available. ¡Widely used for applications requiring thin-walled bearings, such the main shafts of machine tools, rolling machine rollers, and in printing equipment.
¡Used mainly in the necks of rolling machine rollers; designed for maximum rated load to accommodate the severely limited space in the roller neck section of such equipment. ¡Many varieties exist, including sealed types, which have been specially designed for high speed use, to prevent creeping, provide dust and water proofing properties, etc. Contact NTN Engineering.
¡Full complement roller bearing capable of handling heavy loads. ¡Consult NTN Engineering regarding special application designs for SL type cylindrical roller bearings.
B-90
●Cylindrical Roller Bearings
2. Standard cage types
3. Allowable misalignment
Table 3 shows the standard varieties for cylindrical roller bearings. The basic rated loads listed in the dimension charts correspond to values achieved with the standard cages listed in Table 3. Furthermore, please note that even for the identical bearing, in cases where the number of rolling elements or the cage type differs, the basic rated load will also differ from the values listed in the dimension charts.
Although values vary somewhat depending on bearing type and internal specifications, under general load conditions, to avoid the occurrence of edge loading, allowable misalignments have been set as follows: Bearing width series 0 or 1: ………………0.001 rad (3.5') Bearing width series 2: ……………………0.0005 rad (1.5') Double row cylindrical roller bearings 1 : ……0.0005 rad (1.5') 1 Does not include high precision bearings for machine tool main shaft applications.
Table 3 Standard cage types Bearing series
Molded resin cage
Pressed cage
Machined cage
NU10
―
―
1005∼10/500
NU 2 NU2E
― 204E∼218E
208∼230 ―
232∼264 219E∼240E
NU22 NU22E
― 2204E∼2218E
2208∼2230 ―
2232∼2264 2219E∼2240E
NU3 NU3E
304E∼314E
308∼324 ―
326∼356 315E∼332E
NU23 NU23E
― 2304E∼2311E
2308∼2320 ―
2322∼2356 2312E∼2332E
NU4
―
―
405∼416
―
Note: 1) Within the same bearing series, cage type is identical even if the type code (NJ, NUP, N, NF) differs. 2) For high speed and other special applications, machined cages can be manufactured when necessary. Consult NTN Engineering. 3) Among E type bearings (those using molded resin cages), certain varieties may also use pressed cages. Consult NTN Engineering. 4) Although machined cages are standard for two row and four row cylindrical roller bearings, molded resin cages may also be used in some of these bearings for machine tool applications. 5) Due to their material properties, molded resin cages cannot be used in applications where temperatures exceed 120℃.
B-91
●Cylindrical Roller Bearings
B
B r
r1 r
r1
D
d FW
r1
r1
Type NJ
r1
r
J
J
Type NU
r
r
D EW
Type NUP
d J
Type N
Type NF
d 20∼35mm Boundary dimensions mm
kN 2
2
NU204E NU2204E NU304E NU2304E
NJ NJ NJ NJ
NUP NUP NUP NUP
N N N N
1,540 2,990 3,550 4,250 5,800 4,750
1,430 2,830 3,550 3,800 5,700 4,050
16,000 13,000 11,000 11,000 9,700 8,500
19,000 15,000 13,000 13,000 11,000 10,000
NU1005 NU205E NU2205E NU305E NU2305E NU405
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
N N N N N N
19.6 37.5 50.0 50.0 77.5 55.0
2,000 4,000 5,000 5,400 7,600 6,400
2,000 3,800 5,100 5,100 7,900 5,600
14,000 11,000 9,700 9,300 8,300 7,300
16,000 13,000 11,000 11,000 9,700 8,500
NU1006 NU206E NU2206E NU306E NU2306E NU406
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
N N N N N N
22.6 50.5 61.5 71.0 99.0 75.5
23.2 50.0 65.5 71.0 109 69.0
2,310 5,150 6,300 7,200 10,100 7,700
2,360 5,100 6,650 7,200 11,100 7,050
12,000 9,500 8,500 8,100 7,200 6,400
15,000 11,000 10,000 9,600 8,500 7,500
NU1007 NU207E NU2207E NU307E NU2307E NU407
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
N N N N N N
27.3 43.5 55.5 58.0 72.5 58.5 83.0 82.5 114 95.5
29.0 43.0 55.5 62.0 77.5 57.0 81.5 88.0 122 89.0
2,780 4,450 5,700 5,950 7,400 6,000 8,500 8,400 11,600 9,750
2,950 4,350 5,650 6,300 7,900 5,800 8,300 8,950 12,500 9,100
11,000 9,400 8,500 8,500 7,600 8,000 7,200 7,000 6,400 5,700
13,000 11,000 10,000 10,000 8,900 9,400 8,500 8,200 7,500 6,700
NU1008 NU208 NU208E NU2208 NU2208E NU308 NU308E NU2308 NU2308E NU408
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ― N
25.7 30.5 31.5 42.0
22.6 28.3 26.9 39.0
2,620 3,100 3,200 4,300
12 15 18 17 24 21
0.6 1 1 1.1 1.1 1.5
0.3 0.6 0.6 1.1 1.1 1.5
15.1 29.3 35.0 41.5 57.0 46.5
14.1 27.7 34.5 37.5 56.0 40.0
30
55 62 62 72 72 90
13 16 20 19 27 23
1 1 1 1.1 1.1 1.5
0.6 0.6 0.6 1.1 1.1 1.5
19.7 39.0 49.0 53.0 74.5 62.5
35
62 72 72 80 80 100
14 17 23 21 31 25
1 1.1 1.1 1.5 1.5 1.5
0.6 0.6 0.6 1.1 1.1 1.5
40
68 80 80 80 80 90 90 90 90 110
15 18 18 23 23 23 23 33 33 27
1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5 2
0.6 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5 2
20
25
47 52 52 62 62 80
type type NUP N
18,000 16,000 15,000 14,000
0.6 0.6 0.6 0.6
14 18 15 21
type NJ
15,000 14,000 13,000 12,000
1 1 1.1 1.1
47 47 52 52
type NU
2,310 2,890 2,740 3,950
Cr
rs min
rpm oil
Cor
B
Bearing numbers
static
grease
Cr
D
Limiting speeds
kgf
r1s min
d
1
Basic load ratings dynamic static dynamic
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-92
●Cylindrical Roller Bearings
ra
r 1a
r 1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
Ew
Mass
mm J
da
db
dc
dd
de
Da
min
min
max
min
min
max
Db max
min
4
ras
r1as
max
max
kg type NU
type N
(approx.)
― ― ― ―
26.5 26.5 27.5 27.5
― ― ― ―
29.5 29.5 31.1 31.1
24 24 24 24
― ― ― ―
26 26 27 27
29 29 30 30
32 32 33 33
42 42 45.5 45.5
― ― ― ―
― ― ― ―
1 1 1 1
0.6 0.6 0.6 0.6
0.122 0.158 0.176 0.242
― ― ― ―
― ― ― ― ― NF
30.5 31.5 31.5 34 34 38.8
41.5 ― ― ― ― 62.8
32.7 34.5 34.5 38 38 43.6
27 29 29 31.5 31.5 33
29 ― ― ― ― 33
30 31 31 33 33 38
32 34 34 37 37 41
33 37 37 40 40 46
43 47 47 55.5 55.5 72
45 ― ― ― ― 72
42.5 ― ― ― ― 64
0.6 1 1 1 1 1.5
0.3 0.6 0.6 1 1 1.5
0.092 0.151 0.186 0.275 0.386 0.55
0.091 ― ― ― ― 0.536
― ― ― ― ― NF
36.5 37.5 37.5 40.5 40.5 45
48.5 ― ― ― ― 73
38.9 41.1 41.1 44.9 44.9 50.5
34 34 34 36.5 36.5 38
35 ― ― ― ― 38
35 37 37 40 40 44
38 40 40 44 44 47
39.5 44 44 48 48 52
50 57 57 65.5 65.5 82
51 ― ― ― ― 82
49.5 ― ― ― ― 74
1 1 1 1 1 1.5
0.6 0.6 0.6 1 1 1.5
0.13 0.226 0.297 0.398 0.58 0.751
0.128 ― ― ― ― 0.732
― ― ― ― ― NF
42 44 44 46.2 46.2 53
55 ― ― ― ― 83
44.6 48 48 51 51 59
39 39 39 41.5 41.5 43
40 ― ― ― ― 43
41 43 43 45 45 52
44 46 46 48 48 55
45 50 50 53 53 61
57 65.5 65.5 72 72 92
58 ― ― ― ― 92
56 ― ― ― ― 84
1 1 1 1.5 1.5 1.5
0.6 0.6 0.6 1 1 1.5
0.179 0.327 0.455 0.545 0.78 0.99
0.176 ― ― ― ― 0.965
― NF ― ― ― NF ― ― ― NF
47 50 49.5 50 49.5 53.5 52 53.5 52 58
61 70 ― 70 ― 77.5 ― 77.5 ― 92
49.8 54.2 53.9 54.2 53.9 58.4 57.6 58.4 57.6 64.8
44 46.5 46.5 46.5 46.5 48 48 48 48 49
45 46.5 ― 46.5 ― 48 ― 48 ― 49
46 49 49 49 49 51 51 51 51 57
49 52 52 52 52 55 55 55 55 60
50.5 56 56 56 56 60 60 60 60 67
63 73.5 73.5 73.5 73.5 82 82 82 82 101
64 73.5 ― 73.5 ― 82 ― 82 ― 101
62 72 ― 72 ― 80 ― 80 ― 93
1 1 1 1 1 1.5 1.5 1.5 1.5 2
0.6 1 1 1 1 1.5 1.5 1.5 1.5 2
0.22 0.378 0.426 0.49 0.552 0.658 0.754 0.951 1.06 1.3
0.217 0.37 ― 0.48 ― 0.643 ― 0.932 ― 1.27
4 Does not apply to side of the outer ring rib of type NF bearings.
B-93
●Cylindrical Roller Bearings
B
B r
r1 r
r1
D
d FW
r1
r1
Type NJ
r1
r
J
J
Type NU
r
r
D EW
Type NUP
d J
Type N
Type NF
d 35∼55mm Boundary dimensions mm
kN 2
1
Basic load ratings dynamic static dynamic 2
Limiting speeds
Bearing numbers
static
kgf
rpm
type NU
type NJ
type type NUP N
r1s min
Cr
Cor
Cr
Cor
grease
oil
1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5 2
0.6 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5 2
31.0 46.0 63.0 61.5 76.0 74.0 97.5 99.0 137 107
34.0 47.0 66.5 68.0 84.5 71.0 98.5 104 153 102
3,200 4,700 6,450 6,250 7,750 7,550 9,950 10,100 14,000 10,900
3,450 4,800 6,800 6,900 8,600 7,250 10,000 10,600 15,600 10,400
9,900 8,400 7,600 7,600 6,800 7,200 6,500 6,300 5,700 5,100
12,000 9,900 9,000 9,000 8,000 8,400 7,600 7,400 6,800 6,000
NU1009 NU209 NU209E NU2209 NU2209E NU309 NU309E NU2309 NU2309E NU409
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ― N
16 20 20 23 23 27 27 40 40 31
1 1.1 1.1 1.1 1.1 2 2 2 2 2.1
0.6 1.1 1.1 1.1 1.1 2 2 2 2 2.1
32.0 48.0 66.0 64.0 79.5 87.0 110 121 163 129
36.0 51.0 72.0 73.5 91.5 86.0 113 131 187 124
3,300 4,900 6,750 6,550 8,100 8,850 11,200 12,300 16,600 13,200
3,700 5,200 7,350 7,500 9,350 8,800 11,500 13,400 19,000 12,600
8,900 7,600 6,900 6,900 6,200 6,500 5,900 5,700 5,200 4,700
11,000 9,000 8,100 8,100 7,300 7,700 6,900 6,700 6,100 5,500
NU1010 NU210 NU210E NU2210 NU2210E NU310 NU310E NU2310 NU2310E NU410
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ― N
55
90 100 100 100 100 120 120 120 120 140
18 21 21 25 25 29 29 43 43 33
1.1 1.5 1.5 1.5 1.5 2 2 2 2 2.1
1 1.1 1.1 1.1 1.1 2 2 2 2 2.1
37.5 58.0 82.5 75.5 97.0 111 137 148 201 139
44.0 62.5 93.0 87.0 114 111 143 162 233 138
3,850 5,900 8,400 7,700 9,900 11,300 14,000 15,100 20,500 14,200
4,450 6,350 9,500 8,900 11,700 11,400 14,600 16,500 23,800 14,100
8,200 6,900 6,300 6,300 5,600 5,900 5,300 5,200 4,700 4,300
9,700 8,200 7,400 7,400 6,600 7,000 6,300 6,100 5,600 5,000
NU1011 NU211 NU211E NU2211 NU2211E NU311 NU311E NU2311 NU2311E NU411
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ― N
60
95 110 110 110
18 22 22 28
1.1 1.5 1.5 1.5
1 1.5 1.5 1.5
40.0 68.5 97.5 96.0
48.5 75.0 107 116
4,100 7,000 9,950 9,800
4,950 7,650 10,900 11,800
7,500 6,400 5,800 5,800
8,800 7,600 6,800 6,800
NU1012 NU212 NU212E NU2212
NJ NJ NJ NJ
NUP NUP NUP NUP
N N ― N
d
D
B
45
75 85 85 85 85 100 100 100 100 120
16 19 19 23 23 25 25 36 36 29
50
80 90 90 90 90 110 110 110 110 130
rs min
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-94
●Cylindrical Roller Bearings
ra
r 1a
r 1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
Ew
Mass
mm J
da
db
dc
dd
de
Da
min
min
max
min
min
max
Db max
min
4
ras
r1as
max
max
kg type NU
type N
(approx.)
― NF ― ― ― NF ― ― ― NF
52.5 55 54.5 55 54.5 58.5 58.5 58.5 58.5 64.5
67.5 75 ― 75 ― 86.5 ― 86.5 ― 100.5
55.5 59 58.9 59 58.9 64 64.5 64 64.5 71.8
49 51.5 51.5 51.5 51.5 53 53 53 53 54
50 51.5 ― 51.5 ― 53 ― 53 ― 54
52 54 54 54 54 57 57 57 57 63
54 57 57 57 57 60 60 60 60 66
56 61 61 61 61 66 66 66 66 74
70 78.5 78.5 78.5 78.5 92 92 92 92 111
71 68.5 78.5 77 ― ― 78.5 77 ― ― 92 89 ― ― 92 89 ― ― 111 102
1 1 1 1 1 1.5 1.5 1.5 1.5 2
0.6 1 1 1 1 1.5 1.5 1.5 1.5 2
0.28 0.432 0.495 0.53 0.6 0.877 0.996 1.27 1.41 1.62
0.276 0.423 ― 0.52 ― 0.857 ― 1.24 ― 1.58
― NF ― ― ― NF ― ― ― NF
57.5 60.4 59.5 60.4 59.5 65 65 65 65 70.8
72.5 80.4 ― 80.4 ― 95 ― 95 ― 110.8
60.5 64.6 63.9 64.6 63.9 71 71.4 71 71.4 78.8
54 56.5 56.5 56.5 56.5 59 59 59 59 61
55 56.5 ― 56.5 ― 59 ― 59 ― 61
57 58 58 58 58 63 63 63 63 69
59 62 62 62 62 67 67 67 67 73
61 67 67 67 67 73 73 73 73 81
75 83.5 83.5 83.5 83.5 101 101 101 101 119
76 73.5 83.5 83 ― ― 83.5 83 ― ― 101 98 ― ― 101 98 ― ― 119 112
1 1 1 1 1 2 2 2 2 2
0.6 1 1 1 1 2 2 2 2 2
0.295 0.47 0.54 0.571 0.652 1.14 1.3 1.7 1.9 2.02
0.291 0.46 ― 0.56 ― 1.11 ― 1.67 ― 1.97
― NF ― ― ― NF ― ― ― NF
64.5 66.5 66 66.5 66 70.5 70.5 70.5 70.5 77.2
80.5 88.5 ― 88.5 ― 104.5 ― 104.5 ― 117.2
67.7 70.8 70.8 70.8 70.8 77.2 77.7 77.2 77.7 85.2
60 61.5 61.5 61.5 61.5 64 64 64 64 66
61.5 63 ― 63 ― 64 ― 64 ― 66
63 65 65 65 65 69 69 69 69 76
66 68 68 68 68 72 72 72 72 79
68.5 73 73 73 73 80 80 80 80 87
83.5 92 92 92 92 111 111 111 111 129
85 81.5 93.5 91 ― ― 93.5 91 ― ― 111 107 ― ― 111 107 ― ― 129 119
1 1.5 1.5 1.5 1.5 2 2 2 2 2
1 1 1 1 1 2 2 2 2 2
0.442 0.638 0.718 0.773 0.968 1.45 1.65 2.17 2.37 2.48
0.435 0.626 ― 0.758 ― 1.42 ― 2.13 ― 2.42
― NF ― ―
69.5 73.5 72 73.5
85.5 97.5 ― 97.5
72.7 78.4 77.6 78.4
65 68 68 68
66.5 68 ― 68
68 71 71 71
71 75 75 75
73.5 80 80 80
88.5 102 102 102
90 102 ― 102
1 1.5 1.5 1.5
1 1.5 1.5 1.5
0.474 0.818 0.923 1.06
0.467 0.802 ― 1.04
4 Does not apply to side of the outer ring rib of type NF bearings.
B-95
86.5 100 ― 100
●Cylindrical Roller Bearings
B
B r
r1 r
r1
D
d FW
r1
r1
Type NJ
r1
r
J
J
Type NU
r
r
D EW
Type NUP
d J
Type N
Type NF
d 55∼70mm Boundary dimensions mm B
kN rs min
2
1
Basic load ratings dynamic static dynamic 2
Limiting speeds
Bearing numbers
static
kgf
rpm
type NU
type NJ
type type NUP N
Cr
Cor
grease
oil
157 126 157 188 262 168
13,400 12,600 15,200 17,200 22,700 17,100
16,000 12,900 16,000 19,200 26,700 17,200
5,200 5,500 4,900 4,800 4,400 3,900
6,100 6,500 5,800 5,700 5,200 4,600
NU2212E NU312 NU312E NU2312 NU2312E NU412
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
― N ― N ― N
41.0 84.0 108 120 149 135 181 188 248 182
51.0 94.5 119 149 181 139 191 212 287 186
4,200 8,550 11,000 12,200 15,200 13,800 18,400 19,100 25,200 18,600
5,200 9,650 12,100 15,200 18,400 14,200 19,500 21,700 29,300 19,000
7,000 5,900 5,400 5,400 4,800 5,100 4,600 4,400 4,100 3,600
8,200 7,000 6,300 6,300 5,600 6,000 5,400 5,200 4,800 4,300
NU1013 NU213 NU213E NU2213 NU2213E NU313 NU313E NU2313 NU2313E NU413
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ― N
1 1.5 1.5 1.5 1.5 2.1 2.1 2.1 2.1 3
58.5 83.5 119 119 156 158 205 223 274 228
70.5 95.0 137 151 194 168 222 262 325 236
5,950 8,500 12,100 12,200 15,900 16,100 20,900 22,700 27,900 23,200
7,200 9,700 14,000 15,400 19,800 17,200 22,600 26,700 33,000 24,000
6,500 5,500 5,000 5,000 4,500 4,700 4,200 4,100 3,800 3,400
7,600 6,500 5,900 5,900 5,200 5,500 5,000 4,800 4,400 4,000
NU1014 NU214 NU214E NU2214 NU2214E NU314 NU314E NU2314 NU2314E NU414
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ― N
1 1.5 1.5 1.5 1.5 2.1 2.1 2.1
60.0 96.5 130 130 162 190 240 258
74.5 111 156 162 207 205 263 300
6,100 9,850 13,300 13,200 16,500 19,400 24,500 26,300
7,600 11,300 16,000 16,500 21,100 20,900 26,800 31,000
6,100 5,100 4,700 4,700 4,200 4,400 4,000 3,800
7,100 6,000 5,500 5,500 4,900 5,200 4,700 4,500
NU1015 NU215 NU215E NU2215 NU2215E NU315 NU315E NU2315
NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N
r1s min
Cr
d
D
60
110 130 130 130 130 150
28 31 31 46 46 35
1.5 2.1 2.1 2.1 2.1 2.1
1.5 2.1 2.1 2.1 2.1 2.1
131 124 150 169 222 167
65
100 120 120 120 120 140 140 140 140 160
18 23 23 31 31 33 33 48 48 37
1.1 1.5 1.5 1.5 1.5 2.1 2.1 2.1 2.1 2.1
1 1.5 1.5 1.5 1.5 2.1 2.1 2.1 2.1 2.1
70
110 125 125 125 125 150 150 150 150 180
20 24 24 31 31 35 35 51 51 42
1.1 1.5 1.5 1.5 1.5 2.1 2.1 2.1 2.1 3
75
115 130 130 130 130 160 160 160
20 25 25 31 31 37 37 55
1.1 1.5 1.5 1.5 1.5 2.1 2.1 2.1
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-96
●Cylindrical Roller Bearings
ra
r 1a
r 1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
Ew
Mass
mm J
Db
dc
dd
de
Da
min
min
max
min
min
max
102 119 119 119 119 139
― 119 ― 119 ― 139
― 116 ― 116 ― 128
1.5 2 2 2 2 2
1.5 2 2 2 2 2
1.21 1.8 2.05 2.71 2.96 3
― 1.76 ― 2.66 ― 2.93
min
4
r1as
max
max
type N
db
max
ras
kg type NU
da
(approx.)
― NF ― ― ― NF
72 77 77 77 77 83
― 113 ― 113 ― 127
77.6 84.2 84.6 84.2 84.6 91.8
68 71 71 71 71 71
― 71 ― 71 ― 71
71 75 75 75 75 82
75 79 79 79 79 85
80 86 86 86 86 94
― NF ― ― ― NF ― ― ― NF
74.5 79.6 78.5 79.6 78.5 83.5 82.5 83.5 82.5 89.3
90.5 105.6 ― 105.6 ― 121.5 ― 121.5 ― 135.3
77.7 84.8 84.5 84.8 84.5 91 91 91 91 98.5
70 73 73 73 73 76 76 76 76 76
71.5 73 ― 73 ― 76 ― 76 ― 76
73 77 77 77 77 81 81 81 81 88
76 81 81 81 81 85 85 85 85 91
78.5 87 87 87 87 93 93 93 93 100
93.5 112 112 112 112 129 129 129 129 149
95 112 ― 112 ― 129 ― 129 ― 149
91.5 108 ― 108 ― 125 ― 125 ― 137
1 1.5 1.5 1.5 1.5 2 2 2 2 2
1 1.5 1.5 1.5 1.5 2 2 2 2 2
0.485 1.02 1.21 1.4 1.6 2.23 2.54 3.27 3.48 3.6
0.477 1 ― 1.37 ― 2.18 ― 3.2 ― 3.5
― NF ― ― ― NF ― ― ― NF
80 84.5 83.5 84.5 83.5 90 89 90 89 100
100 110.5 ― 110.5 ― 130 ― 130 ― 152
84 89.6 89.5 89.6 89.5 98 98 98 98 110.5
75 78 78 78 78 81 81 81 81 83
76.5 78 ― 78 ― 81 ― 81 ― 83
78 82 82 82 82 87 87 87 87 99
82 86 86 86 86 92 92 92 92 102
85 92 92 92 92 100 100 100 100 112
103.5 117 117 117 117 139 139 139 139 167
105 117 ― 117 ― 139 ― 139 ― 167
101 114 ― 114 ― 134 ― 134 ― 153
1 1.5 1.5 1.5 1.5 2 2 2 2 2.5
1 1.5 1.5 1.5 1.5 2 2 2 2 2.5
0.699 1.12 1.3 1.47 1.7 2.71 3.1 3.98 4.25 5.24
0.689 1.1 ― 1.44 ― 2.65 ― 3.9 ― 5.1
― NF ― ― ― NF ― ―
85 88.5 88.5 88.5 88.5 95.5 95 95.5
105 116.5 ― 116.5 ― 139.5 ― 139.5
89 94 94.5 94 94.5 104.2 104.6 104.2
80 83 83 83 83 86 86 86
81.5 83 ― 83 ― 86 ― 86
83 87 87 87 87 93 93 93
87 90 90 90 90 97 97 97
90 96 96 96 96 106 106 106
108.5 122 122 122 122 149 149 149
110 122 ― 122 ― 149 ― 149
106 120 ― 120 ― 143 ― 143
1 1.5 1.5 1.5 1.5 2 2 2
1 1.5 1.5 1.5 1.5 2 2 2
0.738 1.23 1.41 1.55 1.79 3.28 3.74 4.87
0.727 1.21 ― 1.52 ― 3.21 ― 4.77
4 Does not apply to side of the outer ring rib of type NF bearings.
B-97
●Cylindrical Roller Bearings
B
B r
r1 r
r1
D
d FW
r1
r1
Type NJ
r1
r
J
J
Type NU
r
r
D EW
Type NUP
d J
Type N
Type NF
d 70∼90mm Boundary dimensions mm B
kN 2
1
Basic load ratings dynamic static dynamic 2
Limiting speeds
Bearing numbers
static
kgf
rpm
type NU
type NJ
type type NUP N
Cr
Cor
grease
oil
395 274
33,500 26,800
40,000 27,900
3,500 3,200
4,100 3,700
NU2315E NU415
NJ NJ
NUP NUP
― N
72.5 106 139 147 186 190 256 274 355 299
90.5 122 167 186 243 207 282 330 430 315
7,400 10,800 14,200 15,000 19,000 19,400 26,100 27,900 36,500 30,500
9,250 12,500 17,000 19,000 24,800 21,100 28,800 34,000 44,000 32,000
5,700 4,800 4,400 4,400 3,900 4,100 3,700 3,600 3,300 3,000
6,700 5,700 5,100 5,100 4,600 4,800 4,400 4,200 3,900 3,500
NU1016 NU216 NU216E NU2216 NU2216E NU316 NU316E NU2316 NU2316E NU416
NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ― N
1 2 2 2 2 3 3 3 3
74.5 120 167 170 217 212 291 315 395
95.5 140 199 218 279 228 330 380 485
7,600 12,300 17,000 17,300 22,200 21,600 29,700 32,000 40,000
9,750 14,300 20,300 22,200 28,400 23,300 33,500 39,000 49,500
5,400 4,500 4,100 4,100 3,700 3,900 3,500 3,400 3,100
6,300 5,300 4,800 4,800 4,300 4,600 4,100 4,000 3,700
NU1017 NU217 NU217E NU2217 NU2217E NU317 NU317E NU2317 NU2317E
NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ―
1.5 2 2 2 2 3 3 3 3
1.1 2 2 2 2 3 3 3 3
88.0 152 182 197 242 240 315 325 435
114 178 217 248 315 265 355 395 535
9,000 15,500 18,500 20,100 24,700 24,500 32,000 33,500 44,500
11,700 18,100 22,200 25,300 32,000 27,100 36,000 40,000 54,500
5,100 4,300 3,900 3,900 3,500 3,700 3,300 3,200 2,900
5,900 5,000 4,600 4,600 4,100 4,300 3,900 3,800 3,400
NU1018 NU218 NU218E NU2218 NU2218E NU318 NU318E NU2318 NU2318E
NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ―
1.5 2.1 2.1
1.1 2.1 2.1
90.5 166 220
120 195 265
9,250 16,900 22,500
12,300 19,900 27,000
4,800 4,000 3,600
5,600 4,700 4,300
NU1019 NU219 NU219E
NJ NJ NJ
NUP NUP NUP
N N ―
rs min
r1s min
Cr
d
D
75
160 190
55 45
2.1 3
2.1 3
330 262
80
125 140 140 140 140 170 170 170 170 200
22 26 26 33 33 39 39 58 58 48
1.1 2 2 2 2 2.1 2.1 2.1 2.1 3
1 2 2 2 2 2.1 2.1 2.1 2.1 3
85
130 150 150 150 150 180 180 180 180
22 28 28 36 36 41 41 60 60
1.1 2 2 2 2 3 3 3 3
90
140 160 160 160 160 190 190 190 190
24 30 30 40 40 43 43 64 64
95
145 170 170
24 32 32
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-98
●Cylindrical Roller Bearings
Dimensions
Abutment and fillet dimensions
mm
kgss
Mass
●Cylindrical Roller Bearings
B
B r
r1 r
r1
D
d FW
r1
r1
D EW
Type NJ
r1
r
J
J
Type NU
r
r
Type NUP
d J
Type N
Type NF
d 90∼110mm Boundary dimensions
Basic load ratings dynamic static dynamic
mm B
kN 2
2
1
Limiting speeds
Bearing numbers
static
kgf
rpm
type NU
type NJ
type type NUP N
Cr
Cor
grease
oil
298 370 285 385 460 585
23,500 29,200 26,400 34,000 38,000 47,000
30,500 38,000 29,500 39,500 47,000 59,500
3,600 3,300 3,400 3,100 3,000 2,700
4,300 3,800 4,000 3,600 3,500 3,200
NU2219 NU2219E NU319 NU319E NU2319 NU2319E
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
N ― N ― N ―
93.0 183 249 258 335 299 380 410 570
126 217 305 340 445 335 425 505 715
9,500 18,600 25,400 26,300 34,000 30,500 38,500 42,000 58,000
12,800 22,200 31,000 34,500 45,500 34,500 43,500 51,500 73,000
4,600 3,800 3,500 3,500 3,100 3,300 2,900 2,900 2,600
5,400 4,500 4,100 4,100 3,600 3,800 3,500 3,400 3,100
NU1020 NU220 NU220E NU2220 NU2220E NU320 NU320E NU2320 NU2320E
NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ―
1.1 2.1 3
105 201 320
142 241 360
10,700 20,500 32,500
14,500 24,600 36,500
4,300 3,600 3,100
5,100 4,300 3,700
NU1021 NU221 NU321
NJ NJ NJ
NUP NUP NUP
N N N
2 2.1 2.1 2.1 2.1 3 3 3 3
1.1 2.1 2.1 2.1 2.1 3 3 3 3
131 240 293 320 385 360 450 605 675
174 290 365 415 515 400 525 790 880
13,400 24,500 29,800 32,500 39,000 36,500 46,000 61,500 69,000
17,700 29,500 37,000 42,000 52,500 41,000 53,500 80,500 89,500
4,100 3,400 3,100 3,100 2,800 3,000 2,700 2,600 2,400
4,800 4,000 3,700 3,700 3,300 3,500 3,100 3,100 2,800
NU1022 NU222 NU222E NU2222 NU2222E NU322 NU322E NU2322 NU2322E
NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ―
2 2.1 2.1 2.1 2.1 3
1.1 2.1 2.1 2.1 2.1 3
139 260 335 350 450 450
191 320 420 460 620 510
14,100 26,500 34,000 35,500 46,000 46,000
19,500 32,500 43,000 47,000 63,000 52,000
3,800 3,200 2,900 2,900 2,600 2,700
4,400 3,700 3,400 3,400 3,000 3,200
NU1024 NU224 NU224E NU2224 NU2224E NU324
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
N N ― N ― N
rs min
r1s min
Cr
d
D
95
170 170 200 200 200 200
43 43 45 45 67 67
2.1 2.1 3 3 3 3
2.1 2.1 3 3 3 3
230 286 259 335 370 460
100
150 180 180 180 180 215 215 215 215
24 34 34 46 46 47 47 73 73
1.5 2.1 2.1 2.1 2.1 3 3 3 3
1.1 2.1 2.1 2.1 2.1 3 3 3 3
105
160 190 225
26 36 49
2 2.1 3
110
170 200 200 200 200 240 240 240 240
28 38 38 53 53 50 50 80 80
120
180 215 215 215 215 260
28 40 40 58 58 55
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-100
●Cylindrical Roller Bearings
ra
r 1a
r 1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
― ― NF ― ― ―
113.5 112.5 121.5 121.5 121.5 121.5
151.5 ― 173.5 ― 173.5 ―
― NF ― ― ― NF ― ― ―
113 120 119 120 119 129.5 127.5 129.5 127.5
― NF NF
Mass
mm dc
dd
de
Da
min
min
max
min
min
max
121 121 132 132.7 132 132.7
106 106 108 108 108 108
106 ― 108 ― 108 ―
111 111 119 119 119 119
116 116 124 124 124 124
123 123 134 134 134 134
159 159 187 187 187 187
159 ― 187 ― 187 ―
155 ― 178 ― 178 ―
2 2 2.5 2.5 2.5 2.5
2 2 2.5 2.5 2.5 2.5
3.79 4.14 6.13 6.62 9.2 9.8
3.71 ― 5.99 ― 9.02 ―
137 160 ― 160 ― 185.5 ― 185.5 ―
117.8 128 128 128 128 140.5 140.3 140.5 140.3
106.5 111 111 111 111 113 113 113 113
108 111 ― 111 ― 113 ― 113 ―
111 117 117 117 117 125 125 125 125
116 122 122 122 122 132 132 132 132
119 130 130 130 130 143 143 143 143
142 169 169 169 169 202 202 202 202
143.5 169 ― 169 ― 202 ― 202 ―
139 164 ― 164 ― 190 ― 190 ―
1.5 2 2 2 2 2.5 2.5 2.5 2.5
1 2 2 2 2 2.5 2.5 2.5 2.5
1.45 3.33 3.66 4.57 5.01 7.49 8.57 11.7 12.8
1.43 3.26 ― 4.48 ― 7.32 ― 11.5 ―
119.5 126.8 135
145.5 168.8 195
124.7 135 147
111.5 116 118
114 116 118
118 124 132
122 129 137
126 137 149
151 179 212
153.5 147.5 179 173 212 199
2 2 2.5
1 2 2.5
1.84 3.95 8.53
1.81 3.87 8.33
― NF ― ― ― NF ― ― ―
125 132.5 132.5 132.5 132.5 143 143 143 143
155 178.5 ― 178.5 ― 207 ― 207 ―
131 141.5 142.1 141.5 142.1 155.5 156.6 155.5 156.6
116.5 121 121 121 121 123 123 123 123
119 121 ― 121 ― 123 ― 123 ―
124 130 130 130 130 140 140 140 140
128 135 135 135 135 145 145 145 145
132 144 144 144 144 158 158 158 158
161 189 189 189 189 227 227 227 227
163.5 189 ― 189 ― 227 ― 227 ―
157 182 ― 182 ― 211 ― 211 ―
2 2 2 2 2 2.5 2.5 2.5 2.5
1 2 2 2 2 2.5 2.5 2.5 2.5
2.33 4.63 4.27 6.56 7.4 10 11.1 17.1 19.4
2.3 4.54 ― 6.43 ― 9.77 ― 16.8 ―
― NF ― ― ― NF
135 143.5 143.5 143.5 143.5 154
165 191.5 ― 191.5 ― 226
141 153 153.9 153 153.9 168.5
126.5 131 131 131 131 133
129 131 ― 131 ― 133
134 141 141 141 141 151
138 146 146 146 146 156
142 156 156 156 156 171
171 204 204 204 204 247
173.5 204 ― 204 ― 247
167 196 ― 196 ― 230
2 2 2 2 2 2.5
1 2 2 2 2 2.5
2.44 5.57 5.97 8.19 9.18 12.8
2.4 5.46 ― 8.03 ― 12.5
J
4 Does not apply to side of the outer ring rib of type NF bearings.
B-101
max
min
4
ras
r1as
max
max
type N
db
Ew
Db
kg type NU
da
(approx.)
●Cylindrical Roller Bearings
B
B r
r1
r1
r d FW
D
r1
J
Type NU
r
r d J
J
Type NJ
Type NUP
d 120∼150mm Boundary dimensions
Basic load ratings dynamic static dynamic
mm d
D
B
kN rs min
2
2
r1s min
Cr
1
Limiting speeds
kgf Cor
Cr
Bearing numbers
static rpm Cor
grease
oil
type NU
type NJ
type type NUP N
260 260 260
55 86 86
3 3 3
3 3 3
530 710 795
610 920 1,030
54,000 62,000 72,500 93,500 81,000 105,000
2,400 2,400 2,200
2,800 2,800 2,500
NU324E NU2324 NU2324E
NJ NJ NJ
NUP NUP NUP
― N ―
200 230 230 230 230 280 280 280 280
33 40 40 64 64 58 58 93 93
2 3 3 3 3 4 4 4 4
1.1 3 3 3 3 4 4 4 4
172 270 365 380 530 560 615 840 920
238 340 455 530 735 665 735 1,130 1,230
17,500 24,200 27,600 35,000 37,000 46,000 38,500 54,000 54,000 75,000 57,000 68,000 63,000 75,000 85,500 115,000 94,000 126,000
3,400 2,900 2,600 2,600 2,300 2,500 2,200 2,200 2,000
4,000 3,400 3,100 3,100 2,700 2,900 2,600 2,600 2,300
NU1026 NU226 NU226E NU2226 NU2226E NU326 NU326E NU2326 NU2326E
NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ―
210 250 250 250 250 300 300 300 300
33 42 42 68 68 62 62 102 102
2 3 3 3 3 4 4 4 4
1.1 3 3 3 3 4 4 4 4
176 310 395 445 575 615 665 920 1,020
250 400 515 635 835 745 795 1,250 1,380
17,900 25,500 31,500 40,500 40,000 52,500 45,500 64,500 58,500 85,000 63,000 76,000 67,500 81,500 94,000 127,000 104,000 141,000
3,200 2,700 2,400 2,400 2,100 2,300 2,100 2,000 1,800
3,800 3,100 2,800 2,800 2,500 2,700 2,400 2,300 2,100
NU1028 NU228 NU228E NU2228 NU2228E NU328 NU328E NU2328 NU2328E
NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ―
225 270 270 270 270 320 320 320 320
35 45 45 73 73 65 65 108 108
2.1 3 3 3 3 4 4 4 4
1.5 3 3 3 3 4 4 4 4
202 345 450 500 660 665 760 1,020 1,160
294 435 595 710 980 805 920 1,400 1,600
20,600 29,900 35,000 44,500 45,500 60,500 51,000 72,500 67,500 100,000 67,500 82,500 77,500 94,000 104,000 143,000 118,000 163,000
3,000 2,500 2,200 2,200 2,000 2,100 1,900 1,900 1,700
3,500 2,900 2,600 2,600 2,400 2,500 2,300 2,200 2,000
NU1030 NU230 NU230E NU2230 NU2230E NU330 NU330E NU2330 NU2330E
NJ NJ NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N ― N ―
240 290 290
38 48 48
2.1 3 3
1.5 3 3
238 430 500
340 570 665
2,800 2,300 2,100
3,300 2,700 2,400
NU1032 NU232 NU232E
NJ NJ NJ
NUP NUP NUP
N N ―
24,200 43,500 51,000
35,000 58,000 68,000
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-102
●Cylindrical Roller Bearings
ra
r1a
r1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
Ew
― ― ―
154 154 154
― 226 ―
― NF ― ― ― NF ― ― ―
148 156 153.5 156 153.5 167 167 167 167
― NF ― ― ― NF ― ― ―
Mass
mm dc
dd
de
Da
min
min
max
min
min
max
169.2 168.5 169.2
133 133 133
― 133 ―
151 151 151
156 156 156
171 171 171
247 247 247
― 247 ―
― 230 ―
2.5 2.5 2.5
2.5 2.5 2.5
13.9 21.5 26.1
― 21.1 ―
182 204 ― 204 ― 243 ― 243 ―
154.8 165.5 164.7 165.5 164.7 182 183 182 183
136.5 143 143 143 143 146 146 146 146
139 143 ― 143 ― 146 ― 146 ―
146 151 151 151 151 164 164 164 164
151 158 158 158 158 169 169 169 169
156 168 168 168 168 184 184 184 184
191 217 217 217 217 264 264 264 264
193.5 217 ― 217 ― 264 ― 264 ―
184 208 ― 208 ― 247 ― 247 ―
2 2.5 2.5 2.5 2.5 3 3 3 3
1 2.5 2.5 2.5 2.5 3 3 3 3
3.69 6.3 6.9 10.2 11.8 17.4 19.4 26.9 30.9
3.63 6.17 ― 10 ― 17 ― 26.4 ―
158 169 169 169 169 180 180 180 180
192 221 ― 221 ― 260 ― 260 ―
164.8 179.5 180.2 179.5 180.2 196 196.8 196 196.8
146.5 153 153 153 153 156 156 156 156
149 153 ― 153 ― 156 ― 156 ―
156 166 166 166 166 176 176 176 176
161 171 171 171 171 182 182 182 182
166 182 182 182 182 198 198 198 198
201 237 237 237 237 284 284 284 284
203.5 237 ― 237 ― 284 ― 284 ―
194 225 ― 225 ― 265 ― 265 ―
2 2.5 2.5 2.5 2.5 3 3 3 3
1 2.5 2.5 2.5 2.5 3 3 3 3
4.05 7.88 8.73 12.9 15.8 21.2 23.2 33.8 38.7
3.98 7.72 ― 12.6 ― 20.7 ― 33.1 ―
― NF ― ― ― NF ― ― ―
169.5 182 182 182 182 193 193 193 193
205.5 238 ― 238 ― 277 ― 277 ―
176.7 193 194 193 194 210 211 210 211
158 163 163 163 163 166 166 166 166
161 163 ― 163 ― 166 ― 166 ―
167 179 179 179 179 190 190 190 190
173 184 184 184 184 195 195 195 195
178 196 196 196 196 213 213 213 213
214 257 257 257 257 304 304 304 304
217 257 ― 257 ― 304 ― 304 ―
207.5 242 ― 242 ― 282 ― 282 ―
2 2.5 2.5 2.5 2.5 3 3 3 3
1.5 2.5 2.5 2.5 2.5 3 3 3 3
4.77 9.92 11 16.3 19.7 25.3 28.4 40.6 47.2
4.7 9.72 ― 16 ― 24.7 ― 39.8 ―
― NF ―
180 195 195
220 255 ―
188 207 207.8
168 173 173
171 173 ―
178 192 192
184 197 197
189 210 210
229 277 277
232 277 ―
222 259 ―
2 2.5 2.5
1.5 2.5 2.5
5.9 13.7 15.6
5.81 13.4 ―
4 Does not apply to side of the outer ring rib of type NF bearings.
B-103
max
min
4
ras
r1as
max
max
type N
db
J
Db
kg type NU
da
(approx.)
●Cylindrical Roller Bearings
B
B r r1
r d FW
D
r
r1 r1
r1
J
Type NU
r
r D EW
J
Type NJ
r1
d J
Type N
Type NUP
Type NF
d 160∼200mm Boundary dimensions mm
kN 2
1
Basic load ratings dynamic static dynamic 2
Limiting speeds
Bearing numbers
static
kgf
rpm
type NU
type NJ
type type NUP N
Cor
grease
oil
64,500 82,500 71,000 87,500 109,000 134,000
96,000 121,000 89,500 107,000 155,000 186,000
2,100 1,900 2,000 1,800 1,700 1,600
2,400 2,200 2,300 2,100 2,000 1,900
NU2232 NU2232E NU332 NU332E NU2332 NU2332E
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
N ― N ― N ―
400 635 800 1,080 1,410 1,010 1,750
28,300 48,500 61,500 73,000 98,500 81,500 125,000
41,000 65,000 81,500 110,000 144,000 103,000 179,000
2,600 2,200 2,000 2,000 1,800 1,800 1,600
3,000 2,500 2,300 2,300 2,100 2,200 1,900
NU1034 NU234 NU234E NU2234 NU2234E NU334 NU2334
NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N N
340 495 625 745 1,010 905 1,380
485 675 850 1,140 1,510 1,150 1,990
35,000 50,500 64,000 76,000 103,000 92,000 141,000
49,500 69,000 87,000 117,000 154,000 118,000 203,000
2,400 2,000 1,800 1,800 1,600 1,700 1,500
2,900 2,400 2,200 2,200 1,900 2,000 1,800
NU1036 NU236 NU236E NU2236 NU2236E NU336 NU2336
NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N N
2.1 4 4 4 4 5 5
350 555 695 830 1,100 975 1,520
510 770 955 1,290 1,670 1,260 2,220
36,000 56,500 71,000 84,500 113,000 99,500 155,000
52,000 78,500 97,500 131,000 170,000 129,000 226,000
2,300 1,900 1,700 1,700 1,500 1,600 1,400
2,700 2,200 2,000 2,000 1,800 1,900 1,700
NU1038 NU238 NU238E NU2238 NU2238E NU338 NU2338
NJ NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP NUP
N N ― N ― N N
2.1 4 4 4 4 5
390 620 765 925 1,220 975
580 865 1,060 1,440 1,870 1,270
40,000 63,500 78,000 94,000 125,000 99,500
59,500 88,500 108,000 147,000 191,000 130,000
2,200 1,800 1,600 1,600 1,500 1,500
2,600 2,100 1,900 1,900 1,700 1,800
NU1040 NU240 NU240E NU2240 NU2240E NU340
NJ NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP NUP
N N ― N ― N
r1s min
Cr
Cor
d
D
B
rs min
160
290 290 340 340 340 340
80 80 68 68 114 114
3 3 4 4 4 4
3 3 4 4 4 4
630 810 700 860 1,070 1,310
940 1,190 875 1,050 1,520 1,820
170
260 310 310 310 310 360 360
42 52 52 86 86 72 120
2.1 4 4 4 4 4 4
2.1 4 4 4 4 4 4
278 475 605 715 965 795 1,220
180
280 320 320 320 320 380 380
46 52 52 86 86 75 126
2.1 4 4 4 4 4 4
2.1 4 4 4 4 4 4
190
290 340 340 340 340 400 400
46 55 55 92 92 78 132
2.1 4 4 4 4 5 5
200
310 360 360 360 360 420
51 58 58 98 98 80
2.1 4 4 4 4 5
Cr
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-104
●Cylindrical Roller Bearings
ra
r1a
r1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
Ew
― ― NF ― ― ―
195 193 208 204 208 204
255 ― 292 ― 292 ―
― NF ― ― ― NF ―
193 208 207 208 205 220 220
― NF ― ― ― NF ―
Mass
mm dc
dd
de
Da
min
min
max
min
min
max
207 206.6 225 223.2 225 223.2
173 173 176 176 176 176
173 ― 176 ― 176 ―
192 192 200 200 200 200
197 197 211 211 211 211
210 210 228 228 228 228
277 277 324 324 324 324
277 ― 324 ― 324 ―
259 ― 297 ― 297 ―
2.5 2.5 3 3 3 3
2.5 2.5 3 3 3 3
22 25.1 31.3 34 50.5 56
21.6 ― 30.6 ― 49.5 ―
237 272 ― 272 ― 310 310
201.8 220.5 221.4 220.5 220.2 238 238
181 186 186 186 186 186 186
181 186 ― 186 ― 186 186
190 204 204 204 204 216 216
197 211 211 211 211 223 223
203 223 223 223 223 241 241
249 294 294 294 294 344 344
249 294 ― 294 ― 344 344
239 277 ― 277 ― 315 315
2 3 3 3 3 3 3
2 3 3 3 3 3 3
7.88 17 19.6 27.2 31 37 59.5
7.76 16.7 ― 26.7 ― 36.1 58.3
205 218 217 218 215 232 232
255 282 ― 282 ― 328 328
215 230.5 231.4 230.5 230.2 252 252
191 196 196 196 196 196 196
191 196 ― 196 ― 196 196
203 214 214 214 214 227 227
209 221 221 221 221 235 235
216 233 233 233 233 255 255
269 304 304 304 304 364 364
269 304 ― 304 ― 364 364
257 287 ― 287 ― 333 333
2 3 3 3 3 3 3
2 3 3 3 3 3 3
10.3 17.7 20.4 28.4 31.9 44.2 69.5
10.1 17.3 ― 27.8 ― 43.2 68.1
― NF ― ― ― NF ―
215 231 230 231 228 245 245
265 299 ― 299 ― 345 345
225 244.5 245.2 244.5 244 265 265
201 206 206 206 206 210 210
201 206 ― 206 ― 210 210
213 227 227 227 227 240 240
219 234 234 234 234 248 248
226 247 247 247 247 268 268
279 324 324 324 324 380 380
279 324 ― 324 ― 380 380
267 304 ― 304 ― 351 351
2 3 3 3 3 4 4
2 3 3 3 3 4 4
10.7 21.3 24.2 34.4 39.5 49.4 80.5
10.5 20.8 ― 33.7 ― 48.3 78.9
― NF ― ― ― NF
229 244 243 244 241 260
281 316 ― 316 ― 360
239.4 258 259 258 257.8 280
211 216 216 216 216 220
211 216 ― 216 ― 220
226 240 240 240 240 254
233 247 247 247 247 263
241 261 261 261 261 283
299 344 344 344 344 400
299 344 ― 344 ― 400
283 321 ― 321 ― 366
2 3 3 3 3 4
2 3 3 3 3 4
13.9 25.3 28.1 41.3 47.8 55.8
13.7 24.8 ― 40.5
4 Does not apply to side of the outer ring rib of type NF bearings.
B-105
max
4 min
ras
r1as
max
max
type N
db
J
Db
kg type NU
da
(approx.)
54.5
●Cylindrical Roller Bearings
B
B r
r1
r1
r d FW
D
r1
J
Type NU
r
r d J
J
Type NJ
Type NUP
d 200∼360mm Boundary dimensions mm d
1
Basic load ratings dynamic static dynamic kN
Limiting speeds
Bearing numbers
static
kgf
rpm grease
oil
type NU
type NJ
154,000 229,000
1,400
1,600
NU2340
NJ
NUP
N
750 1,080 1,810 1,570 2,620
51,000 77,500 116,000 122,000 181,000
76,500 110,000 184,000 161,000 268,000
2,000 1,600 1,500 1,400 1,200
2,300 1,900 1,700 1,600 1,400
NU1044 NU244 NU2244 NU344 NU2344
NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP
N N N N N
530 935 1,440 1,430 2,100
820 1,340 2,320 1,950 3,200
54,000 95,500 146,000 146,000 214,000
83,500 136,000 236,000 198,000 325,000
1,800 1,500 1,300 1,300 1,100
2,100 1,700 1,600 1,500 1,300
NU1048 NU248 NU2248 NU348 NU2348
NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP
N N N N N
4 5 5 6 6
645 1,150 1,780 1,620 2,340
1,000 1,660 2,930 2,230 3,600
65,500 117,000 182,000 165,000 239,000
102,000 170,000 299,000 228,000 365,000
1,600 1,300 1,200 1,200 1,000
1,900 1,600 1,400 1,400 1,200
NU1052 NU252 NU2252 NU352 NU2352
NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP
N N N N N
4 5 5 6 6
4 5 5 6 6
660 1,190 1,840 1,820 2,700
1,050 1,760 3,100 2,540 4,250
67,000 121,000 188,000 185,000 275,000
107,000 180,000 315,000 259,000 430,000
1,500 1,200 1,100 1,100 920
1,800 1,400 1,300 1,200 1,100
NU1056 NU256 NU2256 NU356 NU2356
NJ NJ NJ NJ NJ
NUP NUP NUP NUP NUP
N N N N N
74 85 140
4 5 5
4 5 5
855 1,400 2,180
1,340 2,070 3,650
87,000 137,000 143,000 211,000 223,000 370,000
1,400 1,100 1,000
1,600 1,300 1,200
NU1060 NU260 NU2260
NJ NJ NJ
NUP NUP NUP
N N N
480 580 580
74 92 150
4 5 5
4 5 5
875 1,600 2,550
1,410 2,390 4,350
89,500 143,000 164,000 244,000 260,000 445,000
1,300 1,000 950
1,500 1,200 1,100
NU1064 NU264 NU2264
NJ NJ NJ
NUP NUP NUP
N N N
520
82
5
5
1,050
1,670
107,000 170,000
1,200
1,400
NU1068
NJ
NUP
N
540
82
5
5
1,080
1,750
110,000 179,000
1,100
1,300
NU1072
NJ
NUP
N
2
2
r1s min
Cr
Cor
D
B
rs min
420
138
5
5
1,510
2,240
340 400 400 460 460
56 65 108 88 145
3 4 4 5 5
3 4 4 5 5
500 760 1,140 1,190 1,780
360 440 440 500 500
56 72 120 95 155
3 4 4 5 5
3 4 4 5 5
400 480 480 540 540
65 80 130 102 165
4 5 5 6 6
420 500 500 580 580
65 80 130 108 175
460 540 540
Cr
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-106
type type NUP N
●Cylindrical Roller Bearings
ra
r1a
r1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
Ew
―
260
― NF ― NF ―
Mass
mm da
db
dc
dd
de
Da
J
min
min
max
min
min
max
360
280
220
220
254
263
283
400
400
250 270 270 284 284
310 350 350 396 396
262 286 286 307 307
233 236 236 240 240
233 236 236 240 240
248 266 266 279 279
254 273 273 287 287
264 289 289 307 307
327 384 384 440 440
― NF ― NF ―
270 295 295 310 310
330 385 385 430 430
282 313 313 335 335
253 256 256 260 260
253 256 256 260 260
268 293 293 305 305
275 298 298 313 313
284 316 316 333 333
― NF ― NF ―
296 320 320 336 336
364 420 420 464 464
309.6 340 340 362 362
276 280 280 284 284
276 280 280 284 284
292 318 318 331 331
300 323 323 339 339
― NF ― NF ―
316 340 340 362 362
384 440 440 498 498
329.6 360 360 390 390
296 300 300 304 304
296 300 300 304 304
312 336 336 356 356
― NF ―
340 364 364
420 476 476
356 387 387
316 320 320
316 320 320
― NF ―
360 390 390
440 510 510
376 415 415
336 340 340
―
385
475
403
―
405
495
423
kg type NU
type N
ras
r1as
max
max
366
4
4
92.6
90.7
327 384 384 440 440
313 355 355 402 402
2.5 3 3 4 4
2.5 18.2 3 37.7 3 59 4 73.4 4 116
17.9 37 57.8 71.7 114
347 424 424 480 480
347 424 424 480 480
333 390 390 436 436
2.5 3 3 4 4
2.5 19.6 3 50.2 3 80 4 93.4 4 147
19.3 49.2 78.4 91.3 144
312 343 343 359 359
384 460 460 516 516
384 460 460 516 516
367 426 426 471 471
3 4 4 5 5
3 4 4 5 5
29.1 66.9 104 117 182
28.7 65.6 102 114 178
320 343 343 366 366
332 365 365 386 386
404 480 480 556 556
404 480 480 556 556
387 446 446 505 505
3 4 4 5 5
3 4 4 5 5
30.9 70.8 109 142 222
30.4 69.4 107 139 218
336 361 361
344 368 368
358 392 392
444 520 520
444 520 520
423 482 482
3 4 4
3 4 4
43.6 88.2 138
42.9 86.4 135
336 340 340
356 386 386
364 393 393
378 419 419
464 560 560
464 560 560
443 516 516
3 4 4
3 4 4
46 111 172
45.3 109 168
360
360
381
390
405
500
500
479
4
4
61.8
60.8
380
380
401
410
425
520
520
499
4
4
64.7
63.7
4 Does not apply to side of the outer ring rib of type NF bearings.
B-107
Db max
4 min
(approx.)
●Cylindrical Roller Bearings
B
B r r1
r d FW
D
r
r1 r1
r1
J
Type NU
r
r D EW
J
Type NJ
r1
d J
Type N
Type NUP
Type NF
d 380∼500mm Boundary dimensions
Basic load ratings dynamic static dynamic
mm
kN
1
Limiting speeds
Bearing numbers
static
kgf
rpm grease
oil
type NU
type NJ
112,000 187,000
1,100
1,200
NU1076
NJ
NUP
N
2,190
134,000 223,000
990
1,200
NU1080
NJ
NUP
N
1,350
2,290
138,000 233,000
950
1,100
NU1084
NJ
NUP
N
6
1,430
2,430
146,000 248,000
900
1,100
NU1088
NJ
NUP
N
6
6
1,540
2,630
157,000 269,000
850
1,000
NU1092
NJ
NUP
N
100
6
6
1,580
2,750
161,000 280,000
810
960
NU1096
NJ
NUP
N
100
6
6
1,610
2,870
164,000 292,000
770
910
NU10/500
NJ
NUP
N
B
rs min
2
2
r1s min
Cr
Cor
d
D
380
560
82
5
5
1,100
1,840
400
600
90
5
5
1,320
420
620
90
5
5
440
650
94
6
460
680
100
480
700
500
720
Cr
Cor
1 This value achieved with machined cages; when pressed cages are used, 80% of this value is acceptable. 2 Minimal allowable dimension for chamfer dimension r or r1.
B-108
type type NUP N
●Cylindrical Roller Bearings
ra
r1a
r1a
ra da
Da dc
dd
de
dc
db Db
Db
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
Dimensions
Abutment and fillet dimensions
mm type NF
Fw
Ew
―
425
―
Mass
mm da
db
dc
dd
de
Da
J
min
min
max
min
min
max
515
443
400
400
421
430
445
540
540
450
550
470
420
420
446
455
473
580
―
470
570
490
440
440
466
475
493
―
493
597
513.8
464
464
488
499
―
516
624
537.6
484
484
511
―
536
644
557.6
504
504
―
556
664
577.6
524
524
kg type NU
type N
ras
r1as
max
max
519
4
4
67.5
66.5
580
554
4
4
87.6
86.3
600
600
574
4
4
91
89.6
517
626
626
602
5
5
105
103
522
541
656
656
629
5
5
122
120
531
542
561
676
676
649
5
5
126
124
551
562
581
696
696
669
5
5
130
128
4 Does not apply to side of the outer ring rib of type NF bearings.
B-109
Db max
4 min
(approx.)
●L Type Loose Rib L type collar ring B2
B2
r1
r1
B1
B1 d d1
d d1
NH＝NJ＋HJ
NUJ＝NU＋HJ
d 20∼60mm Dimensions
Bearing numbers
mm 1
Mass
Dimensions
kg
mm
d
d1
B1
B2
r1s min
20
29.9 29.5 29.9 29.5 31.8 31.1 31.8 31.1
3 3 3 3 4 4 4 4
6.75 5.5 7.5 6.5 7.5 6.5 8.5 7.5
0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
HJ204 HJ204E HJ2204 HJ2204E HJ304 HJ304E HJ2304 HJ2304E
0.012 0.009 0.013 0.01 0.017 0.014 0.018 0.015
34.8 34.5 34.8 34.5 39 38 39 38 43.6
3 3 3 3 4 4 4 4 6
7.25 6. 7.5 6.5 8 7 9 8 10.5
0.6 0.6 0.6 0.6 1.1 1.1 1.1 1.1 1.5
HJ205 HJ205E HJ2205 HJ2205E HJ305 HJ305E HJ2305 HJ2305E HJ405
0.015 0.012 0.015 0.013 0.025 0.021 0.027 0.024 0.057
30
41.7 41.1 41.7 41.1 45.9 44.9 45.9 44.9 50.5
4 4 4 4 5 5 5 5 7
8.25 7 8.5 7.5 9.5 8.5 11.5 9.5 11.5
0.6 0.6 0.6 0.6 1.1 1.1 1.1 1.1 1.5
HJ206 HJ206E HJ2206 HJ2206E HJ306 HJ306E HJ2306 HJ2306E HJ406
0.025 0.017 0.025 0.02 0.039 0.035 0.043 0.035 0.08
35
47.6 48 47.6 48 50.8 51 50.8 51 59
4 4 4 4 6 6 6 6 8
8 7 8.5 8.5 11 9.5 14 11 13
0.6 0.6 0.6 0.6 1.1 1.1 1.1 1.1 1.5
HJ207 HJ207E HJ2207 HJ2207E HJ307 HJ307E HJ2307 HJ2307E HJ407
0.03 0.027 0.031 0.031 0.056 0.048 0.064 0.055 0.12
25
Bearing numbers
Mass kg
1
d
d1
B1
B2
r1s min
40
54.2 53.9 54.2 53.9 58.4 57.6 58.4 57.6 64.8
5 5 5 5 7 7 7 7 8
9 8.5 9.5 9 12.5 11 14.5 12.5 13.
1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5 2
HJ208 HJ208E HJ2208 HJ2208E HJ308 HJ308E HJ2308 HJ2308E HJ408
0.046 0.042 0.047 0.045 0.083 0.07 0.09 0.08 0.14
45
59 58.9 58.9 64 64.5 64 64.5 71.8
5 5 5 7 7 7 7 8
9.5 8.5 9 12.5 11.5 15 13 13.5
1.1 1.1 1.1 1.5 1.5 1.5 1.5 2
＊HJ209 HJ209E HJ2209E HJ309 HJ309E HJ2309 HJ2309E HJ409
0.053 0.047 0.05 0.099 0.093 0.109 0.103 0.175
50
64.6 63.9 64.6 71 71.4 71 71.4 78.8
5 5 5 8 8 8 8 9
10 9 9.5 14 13 17 14.5 14.5
1.1 1.1 1.1 2 2 2 2 2.1
HJ210 ＊HJ210E HJ2210 HJ310 HJ310E HJ2310 HJ2310E HJ410
0.063 0.055 0.061 0.142 0.134 0.157 0.15 0.23
55
70.8 70.8 70.8 77.2 77.7 77.2 77.7 85.2
6 6 6 9 9 9 9 10
11 9.5 10 15 14 18.5 15.5 16.5
1.1 1.1 1.1 2 2 2 2 2.1
＊HJ211 HJ211E HJ2211E HJ311 HJ311E HJ2311 HJ2311E HJ411
0.084 0.072 0.076 0.182 0.168 0.203 0.185 0.29
60
78.4 77.6
6 6
11 10
1.5 1.5
＊HJ212 ＊HJ212E
0.108 0.094
(approx.)
(approx.)
1 Maximum allowable dimension for chamfer dimension r. Note: 1. This L type collar ring is used with NU type cylindrical roller bearings; in duplex arrangements with NJ or NU type bearing numbers, they become NH type and NUJ type respectively. For bearing dimensions, allowable rotations, and mass, please refer to pages B-94 to B-99. 2. "＊" indicates L type collar rings that can also be used with dimension series 22 bearings.
B-110
●L Type Loose Rib
B2
B2
r1
r1
B1
B1 d d1
d d1
NH＝NJ＋HJ
NUJ＝NU＋HJ
d 60∼105mm Dimensions
Bearing numbers
mm 1
Mass
Dimensions
kg
mm
d
d1
B1
B2
r1s min
60
84.2 84.6 84.2 84.6 91.8
9 9 9 9 10
15.5 14.5 19 16 16.5
2.1 2.1 2.1 2.1 2.1
HJ312 HJ312E HJ2312 HJ2312E HJ412
0.22 0.205 0.245 0.23 0.34
65
84.8 84.5 84.8 84.5 91 91 91 91 98.5
6 6 6 6 10 10 10 10 11
11 10 11.5 10.5 17 15.5 20 18 18
1.5 1.5 1.5 1.5 2.1 2.1 2.1 2.1 2.1
HJ213 HJ213E HJ2213 HJ2213E HJ313 HJ313E HJ2313 HJ2313E HJ413
0.123 0.111 0.126 0.118 0.28 0.25 0.304 0.29 0.42
70
89.6 89.5 89.5 98 98 98 98 110.5
7 7 7 10 10 10 10 12
12.5 11 11.5 17.5 15.5 20.5 18.5 20
1.5 1.5 1.5 2.1 2.1 2.1 2.1 3
＊HJ214 HJ214E HJ2214E HJ314 HJ314E HJ2314 HJ2314E HJ414
0.15 0.13 0.138 0.33 0.293 0.358 0.35 0.605
75
94 94.5 94.5 104.2 104.6 104.2 104.6 116.0
7 7 7 11 11 11 11 13
12.5 11 11.5 18.5 16.5 21.5 19.5 21.5
1.5 1.5 1.5 2.1 2.1 2.1 2.1 3
＊HJ215 HJ215E HJ2215E HJ315 HJ315E HJ2315 HJ2315E HJ415
0.156 0.141 0.164 0.4 0.35 0.432 0.41 0.71
101.2 101.7 111.8 111 111.8
8 8 11 11 11
13.5 12.5 19.5 17 23
2 2 2.1 2.1 2.1
＊HJ216 ＊HJ216E HJ316 HJ316E HJ2316
0.207 0.193 0.47 0.405 0.511
80
Bearing numbers
Mass kg
B2
1
d1
B1
80
111 122
11 13
20 22
2.1 3
85
108.2 107.7 107.7 117.5 118.4 117.5 118.4
8 8 8 12 12 12 12
14 12.5 13 20.5 18.5 24 22
2 2 2 3 3 3 3
＊HJ217 HJ217E HJ2217E HJ317 HJ317E HJ2317 HJ2317E
0.25 0.21 0.216 0.56 0.505 0.606 0.55
90
114.2 114.6 114.2 114.6 125 124.7 125 124.7
9 9 9 9 12 12 12 12
15 14 16 15 21 18.5 26 22
2 2 2 2 3 3 3 3
HJ218 HJ218E HJ2218 HJ2218E HJ318 HJ318E HJ2318 HJ2318E
0.305 0.272 0.315 0.308 0.63 0.548 0.704 0.69
95
121 121 121 121 132 132.7 132 132.7
9 9 9 9 13 13 13 13
15.5 14.0 16.5 15.5 22.5 20.5 26.5 24.5
2.1 2.1 2.1 2.1 3 3 3 3
HJ219 HJ219E HJ2219 HJ2219E HJ319 HJ319E HJ2319 HJ2319E
0.352 0.304 0.363 0.335 0.76 0.7 0.826 0.8
100
128 128 128 128 140.5 140.3 140.5 140.3
10 10 10 10 13 13 13 13
17 15 18 16 22.5 20.5 27.5 23.5
2.1 2.1 2.1 2.1 3 3 3 3
HJ220 HJ220E HJ2220 HJ2220E HJ320 HJ320E HJ2320 HJ2320E
0.444 0.38 0.456 0.385 0.895 0.8 0.986 0.92
105 135.0
10
17.5
2.1
HJ221
0.505
d
(approx.)
r1s min
(approx.)
HJ2316E HJ416
0.45 0.78
1 Maximum allowable dimension for chamfer dimension r. Note: 1. This L type collar ring is used with NU type cylindrical roller bearings; in duplex arrangements with NJ or NU type bearing numbers, they become NH type and NUJ type respectively. For bearing dimensions, allowable rotations, and mass, please refer to pages B-98to B-103. 2. "＊" indicates L type collar rings that can also be used with dimension series 22 bearings.
B-111
●L Type Loose Rib L type collar ring B2
B2
r1
r1
B1
B1 d d1
d d1
NH＝NJ＋HJ
NUJ＝NU＋HJ
d 105∼200mm Dimensions
Bearing numbers
mm 1
Dimensions
kg
mm
B1
B2
105 147.0
13
22.5
3
HJ321
0.97
141.5 142.1 141.5 142.1 155.5 156.6 155.5 156.6
11 11 11 11 14 14 14 14
18.5 17 20.5 19.5 23 22 28 26.5
2.1 2.1 2.1 2.1 3 3 3 3
HJ222 HJ222E HJ2222 HJ2222E HJ322 HJ322E HJ2322 HJ2322E
0.615 0.553 0.645 0.605 1.17 1.09 1.28 1.25
153 153.9 153 153.9 168.5 169.2 168.5 169.2
11 11 11 11 14 14 14 14
19 17 22 20 23.5 22.5 28 26
2.1 2.1 2.1 2.1 3 3 3 3
HJ224 HJ224E HJ2224 HJ2224E HJ324 HJ324E HJ2324 HJ2324E
0.715 0.634 0.767 0.705 1.4 1.28 1.53 1.42
165.5 164.7 165.5 164.7 182 183 182 183
11 11 11 11 14 14 14 14
19 17 25 21 24 23 29.5 28
3 3 3 3 4 4 4 4
HJ226 HJ226E HJ2226 HJ2226E HJ326 HJ326E HJ2326 HJ2326E
0.84 0.684 0.953 0.831 1.62 1.53 1.8 1.75
179.5 180.2 179.5 180.2 196 196.8 196 196.8
11 11 11 11 15 15 15 15
19 18 25 23 26 25 33.5 31
3 3 3 3 4 4 4 4
HJ228 HJ228E HJ2228 HJ2228E HJ328 HJ328E HJ2328 HJ2328E
1 0.929 1.14 1.11 1.93 1.91 2.21 2.3
12
20.5
3
HJ230
1.24
d
110
120
130
140
d1
150 193
r1s min
Mass
Bearing numbers
Mass kg
B1
B2
150
194 193 194 210 211 210 211
12 12 12 15 15 15 15
19.5 26.5 24.5 26.5 25 34 31.5
3 3 3 4 4 4 4
HJ230E HJ2230 HJ2230E HJ330 HJ330E HJ2330 HJ2330E
1.18 1.39 1.42 2.37 2.25 2.69 2.6
160
207 207.8 207 206.6 225 223.2 225 223.2
12 12 12 12 15 15 15 15
21 20 28 24.5 28 25 37 32
3 3 3 3 4 4 4 4
HJ232 HJ232E HJ2232 HJ2232E HJ332 HJ332E HJ2332 HJ2332E
1.48 1.34 1.69 1.61 2.75 2.4 3.16 2.85
170
220.5 221.4 220.5 220.2 238 238
12 12 12 12 16 16
22 20 29 24 29.5 38.5
4 4 4 4 4 4
HJ234 HJ234E HJ2234 HJ2234E HJ334 HJ2334
1.7 1.51 1.93 1.82 3.25 3.71
180
230.5 231.4 230.5 230.2 252 252
12 12 12 12 17 17
22 20 29 24 30.5 40
4 4 4 4 4 4
HJ236 HJ236E HJ2236 HJ2236E HJ336 HJ2336
1.8 1.7 2.04 1.91 3.85 4.42
190
244.5 245.2 244.5 244 265 265
13 13 13 13 18 18
23.5 21.5 31.5 26.5 32 41.5
4 4 4 4 5 5
HJ238 HJ238E HJ2238 HJ2238E HJ338 HJ2338
2.2 1.94 2.52 2.38 4.45 5.05
14
25
4
HJ240
2.6
200 258
r1s min
1
d1
d
(approx.)
(approx.)
1 Maximum allowable dimension for chamfer dimension r. Note: 1. This L type collar ring is used with NU type cylindrical roller bearings; in duplex arrangements with NJ or NU type bearing numbers, they become NH type and NUJ type respectively. For bearing dimensions, allowable rotations, and mass, please refer to pages B-102 to B-109. 2. "＊" indicates L type collar rings that can also be used with dimension series 22 bearings.
B-112
●L Type Loose Rib
B2
B2
r1
r1
B1
B1 d d1
d d1
NH＝NJ＋HJ
NUJ＝NU＋HJ
d 200∼320mm Dimensions
Bearing numbers
mm
Mass kg
1
d
d1
B1
B2
r1s min
200
259 258 257.8 280 280
14 14 14 18 18
23 34 28 33 44.5
4 4 4 5 5
HJ240E HJ2240 HJ2240E HJ340 HJ2340
2.35 2.99 2.86 5 5.76
220
286 307
15 20
27.5 36
4 5
HJ244 HJ344
3.55 7.05
240
313 335
16 22
29.5 39.5
4 5
HJ248 HJ348
4.65 8.2
260
340 362
18 24
33 43
5 6
HJ252 HJ352
6.2 11.4
280
360 390
18 26
33 46
5 6
HJ256 HJ356
7.39 13.9
300
387
20
34.5
5
HJ260
9.14
320
415
21
37
5
HJ264
(approx.)
11.3
1 Maximum allowable dimension for chamfer dimension r. Note: 1. This L type collar ring is used with NU type cylindrical roller bearings; in duplex arrangements with NJ or NU type bearing numbers, they become NH type and NUJ type respectively. For bearing dimensions, allowable rotations, and mass, please refer to pages B-108 to B-109. 2. "＊" indicates L type collar rings that can also be used with dimension series 22 bearings.
B-113
●Multi-Row Cylindrical Roller Bearings B
B r
r r
r
d
d FW
D
D Ew
d
Type NNU Cylindrical bore
d
Type NN
Tapered bore taper 1:12
Cylindrical bore
Tapered bore taper 1:12
d 25∼110mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 2
Limiting speeds
Bearing
static kgf
rpm cylindrical bore
type NNU 1 tapered bore
Cr
Cor
grease
oil
30.0
2,630
3,050
14,000
17,000
―
―
31.0
37.0
3,150
3,800
12,000
15,000
―
―
1
38.0
47.5
3,850
4,850
11,000
13,000
―
―
21
1
43.5
55.5
4,400
5,650
9,700
11,000
―
―
75
23
1
52.0
68.5
5,300
7,000
8,800
10,000
―
―
50
80
23
1
53.0
72.5
5,400
7,400
8,000
9,400
―
―
55
90
26
1.1
69.5
96.5
7,050
9,850
7,300
8,600
―
―
60
95
26
1.1
71.0
102
7,250
10,400
6,700
7,900
―
―
65
100
26
1.1
75.0
111
7,650
11,400
6,200
7,300
―
―
70
110
30
1.1
94.5
143
9,650
14,600
5,800
6,800
―
―
75
115
30
1.1
96.5
149
9,850
15,200
5,400
6,300
―
―
80
125
34
1.1
116
179
11,800
18,200
5,100
5,900
―
―
85
130
34
1.1
122
194
12,400
19,800
4,800
5,600
―
―
90
140
37
1.5
143
228
14,600
23,200
4,500
5,300
―
―
95
145
37
1.5
146
238
14,900
24,200
4,300
5,000
―
―
100
140 150
40 37
1.1 1.5
131 153
260 256
13,300 15,600
26,500 26,100
4,300 4,000
5,100 4,800
NNU4920 ―
NNU4920K ―
105
145 160
40 41
1.1 2
133 198
268 320
13,500 20,200
27,400 33,000
4,100 3,800
4,800 4,500
NNU4921 ―
NNU4921K ―
110
150 170
40 45
1.1 2
137 229
284 375
14,000 23,300
28,900 38,000
3,900 3,600
4,600 4,300
NNU4922 ―
NNU4922K ―
d
D
B
rs min
Cr
25
47
16
0.6
25.8
30
55
19
1
35
62
20
40
68
45
Cor
1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Smallest allowable dimension for chamfer dimension r.
B-114
●Multi-Row Cylindrical Roller Bearings
ra
ra
ra
ra
da dd
Da dc
ra
da Db
Db
db
Db da
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
numbers
Dimensions
Abutment and fillet dimensions
Mass (approx.) kg
type NN 1 cylindrical tapered bore bore
mm Fw
NN3005
NN3005K
NN3006
mm
type NNU
da
db
dc
dd
Da
Db
ras
Ew
min
min
max
min
max
max
min
―
41.3
29
30
―
―
―
43
NN3006K
―
48.5
35
36.5
―
―
―
NN3007
NN3007K
―
55
40
41.5
―
―
NN3008
NN3008K
―
61
45
47
―
NN3009
NN3009K
―
67.5
50
52
NN3010
NN3010K
―
72.5
55
NN3011
NN3011K
―
81
NN3012
NN3012K
―
NN3013
NN3013K
NN3014
type NN
max
cylindrical bore
tapered bore
42
0.6
―
―
0.124 0.121
50
49
1
―
―
0.199 0.193
―
57
56
1
―
―
0.242 0.235
―
―
63
62
1
―
―
0.312 0.303
―
―
―
70
69
1
―
―
0.405 0.393
57
―
―
―
75
74
1
―
―
0.433 0.419
61.5
63.5
―
―
―
83.5
82
1
―
―
0.651 0.631
86.1
66.5
68.5
―
―
―
88.5
87
1
―
―
0.704 0.683
―
91
71.5
73.5
―
―
―
93.5
92
1
―
―
0.758 0.735
NN3014K
―
100
76.5
79
―
―
―
103.5 101
1
―
―
1.04
1.01
NN3015
NN3015K
―
105
81.5
84
―
―
―
108.5 106
1
―
―
1.14
1.11
NN3016
NN3016K
―
113
86.5
89.5
―
―
―
118.5 114
1
―
―
1.52
1.47
NN3017
NN3017K
―
118
91.5
94.5
―
―
―
123.5 119
1
―
―
1.61
1.56
NN3018
NN3018K
―
127
98
101
―
―
―
132
129
1.5
―
―
2.07
2.01
NN3019
NN3019K
―
132
103
106
―
―
―
137
134
1.5
―
―
2.17
2.1
NN4920 NN3020
NN4920K 113 NN3020K ―
129 137
106.5 110 108 111
111 ―
115 ―
133.5 ―
133.5 131 142 139
1 1.83 1.5 ―
1.75 ―
1.75 2.26
1.67 2.19
NN4921 NN3021
NN4921K 118 NN3021K ―
134 146
111.5 115 114 117
116 ―
120 ―
138.5 ―
138.5 136 151 148
1 2
1.91 ―
1.82 ―
1.82 2.89
1.73 2.8
NN4922 NN3022
NN4922K 123 NN3022K ―
139 155
116.5 120 119 123
121 ―
125 ―
143.5 ―
143.5 141 161 157
1 2
1.99 ―
1.9 ―
1.9 3.69
1.81 3.56
B-115
cylindrical bore
tapered bore
●Multi-Row Cylindrical Roller Bearings B
B r
r r
r
d
d FW
D
D Ew
d
Type NNU Cylindrical bore
d
Type NN
Tapered bore taper 1:12
Cylindrical bore
Tapered bore taper 1:12
d 120∼280mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN
d
D
B
rs min
120
165 180
45 46
130
180 200
140
2
Limiting speeds
Bearing
static kgf
rpm grease
oil
cylindrical bore
type NNU 1 tapered bore
Cr
Cor
Cr
Cor
1.1 2
183 233
360 390
18,700 23,700
37,000 40,000
3,600 3,300
4,200 3,900
NNU4924 ―
NNU4924K ―
50 52
1.5 2
220 284
440 475
22,400 29,000
45,000 48,500
3,300 3,100
3,900 3,600
NNU4926 ―
NNU4926K ―
190 210
50 53
1.5 2
227 298
470 515
23,100 30,500
48,000 52,500
3,000 2,800
3,600 3,300
NNU4928 ―
NNU4928K ―
150
210 225
60 56
2 2.1
345 335
690 585
35,000 34,000
70,500 60,000
2,800 2,600
3,300 3,100
NNU4930 ―
NNU4930K ―
160
220 240
60 60
2 2.1
355 375
740 660
36,500 38,000
75,500 67,500
2,600 2,500
3,100 2,900
NNU4932 ―
NNU4932K ―
170
230 260
60 67
2 2.1
360 440
765 775
37,000 45,000
78,000 79,000
2,500 2,300
2,900 2,700
NNU4934 ―
NNU4934K ―
180
250 280
69 74
2 2.1
460 565
965 995
46,500 57,500
98,500 102,000
2,300 2,200
2,700 2,600
NNU4936 ―
NNU4936K ―
190
260 290
69 75
2 2.1
475 580
1,030 1,040
48,500 59,000
105,000 106,000
2,200 2,000
2,600 2,400
NNU4938 ―
NNU4938K ―
200
280 310
80 82
2.1 2.1
555 655
1,180 1,170
56,500 66,500
120,000 119,000
2,100 1,900
2,400 2,300
NNU4940 ―
NNU4940K ―
220
300 340
80 90
2.1 3
585 815
1,300 1,480
59,500 83,000
132,000 151,000
1,900 1,700
2,200 2,100
NNU4944 ―
NNU4944K ―
240
320 360
80 92
2.1 3
610 855
1,410 1,600
62,500 87,000
144,000 163,000
1,700 1,600
2,000 1,900
NNU4948 ―
NNU4948K ―
260
360 400
100 104
2.1 4
900 1,060
2,070 1,990
92,000 108,000
211,000 203,000
1,600 1,500
1,800 1,700
NNU4952 ―
NNU4952K ―
280
380 420
100 106
2.1 4
925 1,080
2,200 2,080
94,500 110,000
224,000 212,000
1,400 1,300
1,700 1,600
NNU4956 ―
NNU4956K ―
1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Smallest allowable dimension for chamfer dimension r.
B-116
●Multi-Row Cylindrical Roller Bearings
ra
ra
ra
ra
da dd
Da dc
ra
da Db
Db
db
Db da
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
numbers
Dimensions
Abutment and fillet dimensions
Mass (approx.) kg
type NN 1 cylindrical tapered bore bore
mm Fw
Ew
da
db
dc
dd
mm Da
min
min
max
min
max
type NNU Db max
ras min
max
type NN
cylindrical bore
tapered bore
cylindrical bore
tapered bore
NN4924 NN3024
NN4924K 134.5 154.5 126.5 130 NN3024K 165 129 133 ―
133 ―
137 ―
158.5 ―
158.5 156.5 171 167
1 2
2.75 ―
2.63 ―
2.63 3.98
2.51 3.83
NN4926 NN3026
NN4926K 146 NN3026K ―
168 182
138 139
142 143
144 ―
148 ―
172 ―
172 191
170 183
1.5 2
3.69 ―
3.52 ―
3.52 5.92
3.35 5.71
NN4928 NN3028
NN4928K 156 NN3028K ―
178 192
148 149
152 153
154 ―
158 ―
182 ―
182 201
180 194
1.5 2
3.94 ―
3.76 ―
3.76 6.44
3.58 6.21
NN4930 NN3030
NN4930K 168.5 196.5 159 NN3030K 206 161 ―
164 166
166 ―
171 ―
201 ―
201 214
198.5 208
2 2
6.18 ―
5.9 ―
5.9 7.81
5.62 7.53
NN4932 NN3032
NN4932K 178.5 206.5 169 NN3032K 219 171 ―
174 176
176 ―
182 ―
211 ―
211 229
208.5 221
2 2
6.53 ―
6.23 ―
6.24 8.92
5.94 8.59
NN4934 NN3034
NN4934K 188.5 216.5 179 NN3034K 236 181 ―
184 187
186 ―
192 ―
221 ―
221 249
218.5 238
2 2
6.87 ―
6.55 6.56 6.24 ― 12.6 12.2
NN4936 NN3036
NN4936K 202 NN3036K ―
234 255
189 191
195 197
199 ―
205 ―
241 ―
241 269
236 257
2 2
9.9 ―
9.46 9.45 9.01 ― 16.6 16
NN4938 NN3038
NN4938K 212 NN3038K ―
244 265
199 201
205 207
209 ―
215 ―
251 ―
251 279
246 267
2 2
10.4 ―
9.94 9.93 9.47 17.4 ― 18
NN4940 NN3040
NN4940K 225 NN3040K ―
261 282
211 211
218 218
222 ―
228 ―
269 ―
269 299
264 285
2 2
14.7 ―
14 ―
14 21.6
13.3 20.8
NN4944 NN3044
NN4944K 245 NN3044K ―
281 310
231 233
238 240
242 ―
248 ―
289 ―
289 327
284 313
2 2.5
15.9 ―
15.2 ―
15.2 29.3
14.5 28.2
NN4948 NN3048
NN4948K 265 NN3048K ―
301 330
251 253
258 261
262 ―
269 ―
309 ―
309 347
304 333
2 2.5
17.2 ―
16.4 ―
16.4 32.8
15.6 31.6
NN4952 NN3052
NN4952K 292 NN3052K ―
336 364
271 276
279 285
288 ―
296 ―
349 ―
349 384
339 367
2 3
29.6 ―
28.3 ―
28.3 47.4
27 45.8
NN4956 NN3056
NN4956K 312 NN3056K ―
356 384
291 296
299 305
308 ―
316 ―
369 ―
369 404
359 387
2 3
31.6 ―
30.2 ―
30.2 51.1
28.8 49.3
B-117
●Multi-Row Cylindrical Roller Bearings B
B r
r r
r
d
d FW
D
D Ew
d
Type NNU Cylindrical bore
d
Type NN
Tapered bore taper 1:12
Cylindrical bore
Tapered bore taper 1:12
d 300∼500mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN
d
D
B
rs min
300
420 460
118 118
3 4
320
440 480
118 121
340
460 520
360
2
Cr
Limiting speeds
Bearing
static kgf
rpm grease
oil
cylindrical bore
type NNU 1 tapered bore
Cor
Cr
Cor
1,200 1,330
2,800 2,560
122,000 135,000
285,000 261,000
1,300 1,200
1,500 1,500
NNU4960 ―
NNU4960K ―
3 4
1,240 1,350
2,970 2,670
126,000 138,000
305,000 272,000
1,200 1,100
1,400 1,300
NNU4964 ―
NNU4964K ―
118 133
3 5
1,280 1,620
3,150 3,200
131,000 165,000
320,000 325,000
1,100 1,100
1,300 1,300
NNU4968 ―
NNU4968K ―
480 540
118 134
3 5
1,290 1,650
3,250 3,300
131,000 169,000
330,000 340,000
1,100 1,000
1,300 1,200
NNU4972 ―
NNU4972K ―
380
520 560
140 135
4 5
1,630 1,690
4,050 3,450
167,000 172,000
415,000 355,000
1,000 940
1,200 1,100
NNU4976 ―
NNU4976K ―
400
540 600
140 148
4 5
1,690 2,040
4,300 4,150
172,000 208,000
435,000 420,000
940 880
1,100 1,000
NNU4980 ―
NNU4980K ―
420
560 620
140 150
4 5
1,740 2,080
4,500 4,300
177,000 212,000
460,000 440,000
900 840
1,100 990
NNU4984 ―
NNU4984K ―
440
600 650
160 157
4 6
2,150 2,420
5,550 5,100
219,000 247,000
565,000 520,000
850 800
1,000 940
NNU4988 ―
NNU4988K ―
460
620 680
160 163
4 6
2,220 2,550
5,850 5,350
226,000 260,000
595,000 545,000
800 750
950 890
NNU4992 ―
NNU4992K ―
480
650
170
5
2,280
5,900
233,000
600,000
770
910
NNU4996
NNU4996K
500
670
170
5
2,360
6,200
240,000
635,000
730
860
NNU49/500
NNU49/500K
1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Smallest allowable dimension for chamfer dimension r.
B-118
●Multi-Row Cylindrical Roller Bearings
ra
ra
ra
ra
da dd
Da dc
ra
da Db
Db
db
Db da
Equivalent bearing load dynamic Pr＝Fr static Por＝Fr
numbers
Dimensions
Abutment and fillet dimensions
Mass (approx.) kg
type NN 1 cylindrical tapered bore bore
mm Fw
da
db
dc
dd
mm Da
Ew
min
min
max
min
max
max
min
type NNU Db
ras
type NN
max
cylindrical bore
tapered bore
cylindrical bore
tapered bore
NN4960 NN3060
NN4960K 339 NN3060K ―
391 418
313 316
323 326
335 ―
343 ―
407 ―
407 444
394 421
2.5 3
48.6 ―
46.4 ―
46.4 70.8
44.2 68.6
NN4964 NN3064
NN4964K 359 NN3064K ―
411 438
333 336
343 346
355 ―
363 ―
427 ―
427 464
414 441
2.5 3
51.4 ―
49.1 ―
49 76.2
46.7 73.5
― NN3068
379 ― NN3068K ―
― 473
353 360
363 371
375 ―
383 ―
447 ―
― 500
― 477
2.5 4
54.2 ―
51.7 ―
― 102
― NN3072
398 ― NN3072K ―
― 493
373 380
383 391
394 ―
402 ―
467 ―
― 520
― 497
2.5 4
57 ―
54.4 ―
― 107
― 103
― NN3076
425 ― NN3076K ―
― 512
396 400
408 411
420 ―
430 ―
504 ―
― 540
― 516
3 4
84.5 ―
80.6 ―
― 113
― 109
― NN3080
445 ― NN3080K ―
― 547
416 420
428 432
440 ―
450 ―
524 ―
― 580
― 551
3 4
88.2 ―
84.1 ―
― 146
― 141
― NN3084
465 ― NN3084K ―
― 567
436 440
448 452
460 ―
470 ―
544 ―
― 600
― 571
3 4
92 ―
87.7 ―
― 154
― 148
― NN3088
492 ― NN3088K ―
― 596
456 464
469 477
487 ―
497 ―
584 ―
― 626
― 601
3 5
127 ―
121 ―
― 178
― 172
― NN3092
512 ― NN3092K ―
― 622
476 484
489 498
507 ―
517 ―
604 ―
― 656
― 627
3 5
132 ―
126 ―
― 202
― 195
― 98.5
―
―
534
―
500
514
531
541
630
―
―
4
156
149
―
―
―
―
556
―
520
534
551
561
650
―
―
4
162
155
―
―
B-119
●Four-Row Cylindrical Roller Bearings
d 120∼200mm Boundary dimensions dynamic mm d
D
B1
Basic load ratings static dynamic
kN C1
rs min
1
r1s min
1
Cr
kgf Cor
120 130 140 145
150
160
170
180
190
200 1 Minimal allowable dimension for chamfer dimension r or r1. 2 Oil groove and oil inlet are in center of outer ring.
B-120
static
Cr
Cor
●Four-Row Cylindrical Roller Bearings
Bearing numbers
Dimensions Drawing no.
Mass kg
Fw
(approx.)
4R2437 4R2438
137 135
1 1
8.2 9.3
4R2628
150
1
12.1
4R2823
160
1
13.9
4R2906 4R2908
166 169
1 1
18 23.4
4R3031 4R3029 4R3040 4R3039
168 174 174 177
1 1 1 1
19.4 20 24.5 29.6
4R3224 4R3226 4R3232 4R3225
177 180 179 183
1 1 1 1
20.2 16.6 23.4 27.8
4R3426 4R3429 4R3423 4R3432 4R3425 4R3433 4R3431
187 189 190 193 193 192 196
1 1 1 1 1 1 1
14.2 22.2 22.8 28.2 19.3 29.5 44
4R3625 4R3628 4R3618
200 202 204
1 1 1
23.2 29.4 34.2
4R3820 4R3818 4R3821 4R3823
212 213 212 214
1 1 1 2 1
26.9 31.7 37.5 41.5
4R4039 4R4026 4R4037
222 223 222
1 1 1
28.5 36.7 40.5
Note: Drawing 1 represents a bearing with solid rollers and machined cage.
B-121
●Four-Row Cylindrical Roller Bearings
C1
C1 r1
r1
r
r B1
B1
D
d FW
d FW
D
Drawing 1
Drawing 2
d 200∼300mm Boundary dimensions dynamic mm
Basic load ratings static dynamic
kN 1
rs min
192 216
192 216
2.5 3
2.5 3
1,290 1,750
3,150 3,650
132,000 179,000
320,000 375,000
290
192
192
2.5
2.5
1,230
3,350
126,000
340,000
220
290 300 310 310 310 310 310 320 320
192 160 192 204 215 225 265 160 210
192 160 192 204 215 225 265 160 210
2.5 2.5 2.5 2.5 2.5 2.5 2.5 3 2.5
2.5 2.5 2.5 2.5 2.5 2.5 2.5 3 2.5
1,190 1,000 1,390 1,420 1,530 1,480 1,630 1,190 1,550
3,350 2,590 3,400 3,750 3,750 3,950 4,500 2,550 3,650
122,000 102,000 141,000 144,000 156,000 151,000 167,000 121,000 158,000
340,000 264,000 350,000 385,000 380,000 405,000 460,000 260,000 370,000
230
330 340
206 260
206 260
2.5 3
2.5 3
1,520 2,050
3,800 5,100
155,000 209,000
385,000 520,000
240
330 340 360
220 220 220
220 220 220
3 3 2.5
3 3 2.5
1,490 1,670 1,760
4,150 4,200 4,050
152,000 170,000 179,000
420,000 425,000 415,000
250
350
220
220
3
3
1,730
4,300
176,000
440,000
260
370 380
220 280
220 280
3 3
3 3
1,760 2,420
4,450 6,250
179,000 247,000
455,000 635,000
270
380
280
280
2.5
2.5
2,580
6,850
263,000
700,000
280
390 390 420
220 275 280
220 275 280
3 2.5 4
3 2.5 4
1,780 2,290 2,430
4,650 6,250 6,150
181,000 233,000 248,000
475,000 635,000 630,000
290
410 420
240 300
240 300
3 3
3 3
2,240 2,830
5,550 7,500
228,000 288,000
565,000 765,000
300
400 420 420 420
300 240 300 300
300 240 300 300
3 3 3 3
3 3 3 3
2,480 2,020 2,720 2,900
7,500 5,450 7,600 7,850
253,000 206,000 278,000 295,000
765,000 555,000 775,000 800,000
D
200
290 320
210
B1
Cr
kgf
C1
d
r1s min
1
static
Cor
Cr
1 Minimal allowable dimension for chamfer dimension r or r1. 2 Oil groove and oil inlet are in center of outer ring. 3 Oil groove and oil inlet not on outer ring spacer. B-122
Cor
●Four-Row Cylindrical Roller Bearings
Bearing numbers
Dimensions Drawing no.
Mass kg
Fw
(approx.)
4R4041 4R4028
226 231
1 1
42.5 67
4R4206
236
1
39.5
4R4413 4R4419 4R4426 4R4425 4R4420 4R4416 4R4430 4R4428 4R4429
239 245 246 247 242 245 245 245 248
1 1 1 1 1 1 1 1 1
33.8 32.8 46.9 49.8 51.5 54.9 63.5 46.5 60.5
4R4614 4R4611
258 261
1 1
58.6 82.6
4R4811 4R4806 4R4807
270 268 274
1 1 1
56.8 63.6 79.6
4R5008
278
1
66
4R5217 4R5213
292 294
1 1
76.5 109
4R5405
299.7
2
105
4R5611 4R5612 4R5605
312 312 323
1 1 1
81.3 105 139
4R5806 4R5805
320 327
1 1
103 141
E-4R6014 E-4R6017 E-4R6015 E-4R6020
328 334 334 332
1 1 1 2
104 106 125 130
2
3
Note: Drawing 1 represents a bearing with solid rollers and machined cage; Drawing 2 represents a bearing with hollow rollers and pin type cage.
B-123
●Four-Row Cylindrical Roller Bearings
C1
C1 r1
r1
r
r B1
B1
D
d FW
d FW
D
Drawing 1
Drawing 2
d 300∼460mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
1
kgf
C1
rs min
r1s min
320 270
300 270
3 3
3 3
2,900 2,510
7,850 5,350
295,000 256,000
800,000 545,000
430
240
240
3
3
2,240
5,950
228,000
605,000
320
440 450 460 470
240 240 340 350
230 240 340 350
3 3 3 3
3 3 3 3
2,290 2,370 3,400 4,150
6,050 6,150 9,450 10,900
234,000 242,000 345,000 425,000
615,000 630,000 960,000 1,110,000
330
440 460
200 340
200 340
3 4
3 4
1,820 3,250
4,850 8,850
186,000 330,000
495,000 905,000
340
480 490
370 300
350 300
5 4
5 4
3,450 3,350
9,650 8,300
350,000 340,000
985,000 845,000
360
510
400
400
5
5
4,250
11,500
435,000
1,170,000
370
480 520
230 400
230 400
5 5
5 5
2,100 4,650
6,250 13,500
214,000 475,000
635,000 1,370,000
380
520 520 540
280 300 400
280 300 400
4 4 4
4 4 4
3,400 3,550 5,200
9,150 9,600 15,200
350,000 360,000 530,000
935,000 980,000 1,550,000
400
560 560
400 410
400 410
5 4
5 4
4,250 5,750
11,800 17,000
430,000 585,000
1,210,000 1,730,000
410
546
400
400
5
5
4,200
12,700
430,000
1,290,000
420
560 580 620
280 230 400
280 230 400
4 4 5
4 4 5
3,150 2,430 5,000
8,750 6,250 13,400
320,000 248,000 510,000
895,000 635,000 1,360,000
440
620
450
450
5
5
6,450
18,700
660,000
1,910,000
460
620 620 650
400 400 470
400 400 470
4 4 5
4 4 5
5,350 4,950 7,150
16,700 15,000 20,600
545,000 505,000 730,000
1,700,000 1,530,000 2,100,000
d
D
300
420 460
310
B1
Cr
static
Cor
Cr
Cor
1 Minimal allowable dimension for chamfer dimension r or r1. 2 Oil inlet and oil groove are in center of the outer ring; no oil groove on the side. 3 Oil inlet in space of outer ring; no oil groove. 4 One-piece inner ring.
B-124
●Four-Row Cylindrical Roller Bearings
Bearing numbers
Dimensions Drawing no.
Mass kg
Fw
(approx.)
E-4R6018 E-4R6019
332 344
2 1
136 162
E-4R6202
344.5
1
108
E-4R6414 E-4R6411 E-4R6412 E-4R6406
351 358 360 361.7
1 1 1 2
106 125 178 212
E-4R6603 E-4R6605
360 365
1 1
83.6 181
E-4R6811 E-4R6804
378 377
1 1
198 187
E-4R7203
397
1
262
E-4R7405 E-4R7404
400 409
1 1
106 273
E-4R7605 E-4R7607 E-4R7604
417 416 422
1 3 2 3 2
174 210 325
E-4R8007 E-4R8010
446 445
1 2
303 349
E-4R8201
444
1
256
E-4R8403 E-4R8404 E-4R8401
457 466 478
1 1 1
189 181 410
E-4R8801
487
2
437
E-4R9211 E-4R9209 E-4R9216
502 502 509
2 1 2
2
2
2
34
383 341 540
Note: Drawing 1 represents a bearing with solid rollers and machined cage; Drawing 2 represents a bearing with hollow rollers and pin type cage.
B-125
●Four-Row Cylindrical Roller Bearings
C1
C1 r1
r1
r
r B1
B1
D
d FW
d FW
D
Drawing 1
Drawing 2
d 480∼690mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN Cr
Cor
5 5 9.5X20° 5 6 6
5,950 7,100 7,950
18,100 21,600 24,000
605,000 720,000 810,000
1,840,000 2,200,000 2,450,000
405 470 510 515 480 530
5 5 5 5 6 5
5 5 5 5 6 5
7,100 7,650 7,750 7,900 8,650 8,250
22,900 22,500 24,600 24,100 24,700 25,000
725,000 780,000 790,000 805,000 880,000 840,000
2,340,000 2,290,000 2,500,000 2,450,000 2,520,000 2,550,000
320 540
320 540
5 6
5 6
4,550 8,300
13,500 25,000
465,000 845,000
1,380,000 2,550,000
700 735
540 535
540 535
6 5
6 5
8,200 9,000
25,500 26,600
835,000 915,000
2,600,000 2,710,000
530
700 760 780
540 520 570
540 520 570
6 6 6
6 6 6
7,850 9,150 10,300
25,400 26,700 29,100
800,000 935,000 1,050,000
2,590,000 2,730,000 2,970,000
550
800
520
520
6
6
9,450
27,000
965,000
2,750,000
560
680
360
360
3
3
4,650
16,500
475,000
1,680,000
570
815
594
594
6
6
11,800
34,500
1,200,000
3,500,000
600
820 870 870
575 540 640
575 540 640
6 7.5 7.5
10,000 10,600 13,600
31,500 29,600 40,500
1,020,000 1,090,000 1,390,000
3,200,000 3,000,000 4,150,000
610
870
660
660
9.5
7.5
12,600
40,000
1,280,000
4,100,000
650
920 920
670 690
670 690
7.5 7.5
4 7.5
14,600 14,300
46,000 46,500
1,490,000 1,460,000
4,700,000 4,750,000
660
820
440
440
5
4
7,300
27,800
745,000
2,840,000
690
980
715
715
7.5
7.5
16,800
54,500
1,720,000
5,550,000
D
480
650 650 680
420 450 500
420 450 500
500
680 690 690 700 710 720
420 470 510 515 480 530
510
670 700
520
12X20° 7.5 7.5
r1s min
kgf Cor
d
rs min
1
Cr
B1
C1
1
static
1 Minimal allowable dimension for chamfer dimension r or r1. 2 Oil inlet and oil groove are in center of the outer ring; no oil groove on the side. 3 Oil inlet in space of outer ring; no oil groove. B-126
●Four-Row Cylindrical Roller Bearings
Bearing numbers
Dimensions Drawing no.
Mass kg
Fw
(approx.) 4
E-4R9607 E-4R9609 E-4R9604
523 525 532
2 4 2 2
E-4R10010 E-4R10016 E-4R10006 E-4R10011 E-4R10008 E-4R10015
550 547 552 554 556 568
2 2 2 2 2 2
E-4R10201 E-4R10202
554 558
2 2
335 689
E-4R10403 E-4R10402
564 574.5
2 2
658 740
E-4R10603 E-4R10601 E-4R10602
574 590 601
2 2 2
626 800 1 010
E-4R11001
622
2
965
E-4R11202
590
1
265
E-4R11402
628
2
1 040
E-4R12003 E-4R12002 E-4R12001
655 672 672
2 2 2
980 1 150 1 330
E-4R12202
680
2
1 400
E-4R13005 E-4R13003
723 723
2 2
1 500 1 550
E-4R13201
702
2
580
E-4R13802
767.5
2
1 850
3
4
2
369 395 640 495 590 640 680 675 780
4 One-piece inner ring. Note: Drawing 1 represents a bearing with solid rollers and machined cage; Drawing 2 represents a bearing with hollow rollers and pin type cage. B-127
●Four-Row Cylindrical Roller Bearings
C1
C1 r1
r1
r
r B1
B1
D
d FW
d FW
D
Drawing 1
Drawing 2
d 700∼1 200mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN Cr
Cor
6
12,900
43,000
1,320,000
4,400,000
9.5
6
16,800
54,500
1,710,000
5,550,000
700
6
6
15,900
53,500
1,620,000
5,450,000
745 745
720 720
7.5 7.5
7.5 7.5
17,600 19,100
58,000 60,500
1,790,000 1,950,000
5,900,000 6,150,000
1,030 1,080 1,100
750 805 745
750 790 720
7.5 6 7.5
7.5 6 7.5
17,300 18,700 19,100
59,500 61,000 60,500
1,760,000 1,900,000 1,950,000
6,050,000 6,250,000 6,150,000
800
1,080 1,080
700 750
700 750
7.5 6
7.5 6
16,500 17,300
55,000 59,000
1,680,000 1,760,000
5,600,000 6,000,000
820
1,130 1,130 1,160
800 825 840
800 800 840
7.5 7.5 7.5
7.5 7.5 7.5
19,600 19,600 21,600
66,500 66,500 71,000
2,000,000 2,000,000 2,200,000
6,800,000 6,800,000 7,250,000
840
1,160
840
840
5
7.5
21,600
71,000
2,200,000
7,250,000
850
1,150 1,150 1,180 1,180
650 800 650 850
650 800 650 850
9.5 6 7.5 9.5
9.5 6 7.5 9.5
15,700 19,700 16,400 24,100
51,000 71,000 51,500 78,500
1,610,000 2,010,000 1,670,000 2,460,000
5,200,000 7,250,000 5,250,000 8,000,000
860
1,160
735
710
6
6
17,800
62,500
1,810,000
6,400,000
900
1,230
895
870
7.5
7.5
24,700
88,000
2,520,000
9,000,000
920
1,280
865
850
7.5
7.5
26,200
88,500
2,670,000
9,000,000
1000
1,310 1,360
880 800
880 800
9.5 7.5
9.5 7.5
23,400 25,000
88,500 85,000
2,380,000 2,550,000
9,000,000 8,650,000
1030
1,380
850
850
7.5
7.5
24,400
89,000
2,490,000
9,100,000
1200
1,590
1,050
1,050
7.5
7.5
36,000
133,000
3,650,000
13,600,000
D
700
930
620
620
710
1,000
715
715
725
1,000
700
750
1,050 1,090
760
15X20°
r1s min
kgf Cor
d
rs min
1
Cr
B1
C1
1
static
1 Minimal allowable dimension for chamfer dimension r or r1. 2 Inner ring is divided into four. 3 Oil mist nozzles are attached. 4 Oil inlet in space of outer ring; no oil groove. B-128
●Four-Row Cylindrical Roller Bearings
Bearing numbers
Dimensions Drawing no.
Mass kg
Fw
(approx.)
E-4R14003
763
2
E-4R14205
787.5
2
1 900
E-4R14501
796
2
1 730
E-4R15001 E-4R15002
830 845
2 3 2
E-4R15204 E-4R15207 E-4R15203
828 845 855
2 3 2 3 2
2 000 2 550 2 560
E-4R16004 E-4R16005
870 880
2 2
1 950 2 090
E-4R16406 E-4R16405 E-4R16403
903 903 910
2 2 2
2 450 2 520 2 930
E-4R16801
920
2
2 840
E-4R17001 E-4R17003 E-4R17004 E-4R17002
941 930 945 928
2 2 2 2
1 980 2 430 2 270 2 970
E-4R17201
940
2
2 310
E-4R18001
985
2
3 250
E-4R18401
1 015
2
3 560
E-4R20001 E-4R20002
1 080 1 090
2 2
3 260 3 530
E-4R20601
1 124
2
3 800
E-4R24002
1 295
2
2
3
3
3
3
2
1 200
2 180 2 530
6 220
Note: Drawing 2 represents a bearing with hollow rollers and pin type cage.
B-129
●Tapered Roller Bearings
1. Types, design features, and characteristics Tapered roller bearings are designed so that the center lines of the raceways and rollers all converge at a single point as shown in Diagram 1. Due to this design feature, rollers move along the center of the raceway surfaces. The tapered rollers are guided by the compound force of the inner and outer raceway surfaces which keep them pressed up against the large rib on the inner ring. A large variety of these bearings, including single, double, and four row arrangements, are in use both in metric and inch system sizes. Table 1 lists the various types of tapered roller bearings and their characteristics.
Diagram 1.
Table 1 Tapered roller bearing types and characteristics Type
Characteristics (1) There are both metric and inch system dimension series, and they have been standardized as shown in the following table. Dimension series Metric system Regulations Basic number
Inch system
¡JIS B 1512 ¡ISO 355
¡ABMA (includes metric J-series)
Example, 30210 ＊T2EE040
Inner ring no. / outer ring no. ("J" appears at the beginning of the basic number in the case of J-series.)
＊Dimension series previously not covered by 3XX are regulated under JIS B 1512; dimensions previously missing from 3XX will henceforth use the bearing number.
(2) In addition to level type, there are also medium contact angle and large contact angle types, and the contact angle code C and D, respectively, is appended to the basic numbers of the latter two types. Single row tapered roller bearings
(3) Subunits Tapered roller bearings can be disassembled into parts ― the inner ring, rollers, and cage (collectively known as the "cone") ― and the outer ring (known as the "cup"). These are the bearing’s "subunits". Subunit dimensions are standardized under ISO or ABMA standards, and unified subunits are interchangeable within each dimensional standard. However, high precision grade bearings are generally not interchangeable, and these subunits must be used by assembling only subunits with identical manufacturing numbers. Aside from any cautionary notes that may appear, the single row tapered roller bearings listed in the dimension tables have subunits standardized for both metric and inch systems (including J series). (Refer to Diagram 2) Subunit dimensions
2α
E
E : Outer ring (cup) nominal small-end diameter α : Nominal contact angle Diagram 2.
B-131
●Tapered Roller Bearings
Table 1 (continued) Type
Characteristics (4) Concerning ET and 4T Types ET and 4T tapered roller bearings are made of high-purity case hardened steel and are manufactured with a special heat treatment developed by NTN. As a result, wear life and reliability have been improved to where life coefficient, a2, values can be applied as follows: 4T tapered roller bearings: a2 ＝1.4 ET tapered roller bearings: a2 ＝1.9 Furthermore, although not listed in the dimension tables, ET type bearings are also manufactured for some extra small bearing sizes. For details, consult NTN Engineering.
Single row tapered roller bearings
(5) These bearings are constructed to have a high capacity for radial loads, axial loads, and combined loads. The larger the contact angle, the greater the axial load capacity becomes. When a pure radial load is placed on the bearings, an induced load in the axial direction is also generated, and so these bearings are generally used in pairs arranged face to face. (6) When used in pairs, proper internal clearances and preload can be set by adjusting the distance between the two bearings' inner and outer rings. (7) Inner and outer rings are separable, enabling them to be installed individually with the desired interference fit. (8) Tapered roller bearings are also manufactured with flanges attached to the outer rings. For more details, contact NTN Engineering. (Refer to Diagram 3)
Diagram 3.
(1) Outward facing types (using double row outer rings) and inward facing types (using double row inner rings) are both available, and they have been adjusted so that each type's internal clearance values are fixed. Therefore, only parts with identical manufacturing numbers can be used and they must be assembled according to their code numbers. (Refer to Diagram 4) Double row tapered roller bearings
(2) The axial internal clearances for double and duplex bearings are listed in Table 8 on pages A-58, 59. (3) Pairs of duplex single row tapered roller bearings are also manufactured. For more details, contact NTN Engineering.
Inward facing Outward facing Diagram 4.
(1) As shown in Diagram 5, four row tapered roller bearings are constructed of two double row inner rings and two double row outer rings. Four row tapered roller bearings
(2) Bearings wear life is greatly improved through the use of induction hardening and, for large-sized bearings, hollow rollers and pin type cages. (3) Used primarily where heavy load capacity is important, and in the roller necks of rolling mills. Diagram 5.
B-132
●Tapered Roller Bearings
2. Standard cage type In general, pressed cages are used in tapered roller bearings. However, for large sized bearings, machined or pin type cages are also used; and for small sized bearings, molded resin cages are also used.
3. Allowable misalignment Single row and back-to-back arrangement: ………0.0005rad（1.5'） Face-to-face: …………………………0.001rad （3.5'） In situations where large displacement is necessary, please consult NTN Engineering.
B-133
●Tapered Roller Bearings Inch Tapered Roller Bearings index
Series number
Cone or cup number is between
Page of bearing dimension table
Series number
Cone or cup number is between
Page of bearing dimension table
335
4T-332∼4T-344
B-165,167,169
2700
4T-2720∼4T-2793
B-163,165,167
355
4T-350A∼4T-359S
B-167,169,171
2800
4T-2820∼4T-2879
B-163
365
4T-362∼4T-370A
B-171,173,175
2900
4T-2924∼4T-2984
B-171
385
4T-382A∼4T-389A
B-171,173,175,177
3100
4T-3120∼4T-3196
B-161,163
395
4T-390∼4T-399A
B-173,177,179,181
3300
4T-3320∼4T-3386
B-165,167
415
4T-414∼4T-420
B-167
3400
4T-3420∼4T-3490
B-163,165,167
435
4T-432∼4T-438
B-169,171
3500
4T-3520∼4T-3586
B-167,169,171
455
4T-453A∼4T-469
B-169,171,175,177
4T-JS3510∼4T-JS3549A
B-165
475
4T-472∼4T-484
B-179,181,183
3700
4T-3720∼4T-3782
B-169,171,173,175
495
4T-492A∼4T-498
B-183,185,187
3800
4T-3820∼4T-3880
B-165,167,169
525
4T-522∼4T-529
B-169,171,175
3900
4T-3920∼4T-3994
B-175,177,179,181
535
4T-532A∼4T-543
B-167,175
4T-A4050∼4T-A4138
B-157
555
4T-522∼4T-560S
B-175,177,179,181
4300
4T-4335∼4T-4395
B-169
565
4T-563∼4T-568
B-179,181
5300
4T-5335∼4T-5395
B-173
575
4T-572∼4T-582
B-183,185
5500
4T-5535∼4T-5584
B-175,179
595
4T-592A∼4T-598A
B-185,187,189
5700
4T-5735∼4T-5760
B-183
615
4T-612∼4T-623
B-175,177
4T-A6075∼4T-A6157
B-157
635
4T-632∼4T-644
B-179,181,183
6200
4T-6220∼4T-6277
B-171
655
4T-652∼4T-665
B-181,183,185,187
6300
4T-6320∼4T-6386
B-181
675
4T-672∼4T-687
B-187,189
6400
4T-6420∼4T-6461A
B-183,185
745
4T-740∼4T-749A
B-181,183,185,187
6500
4T-6535∼4T-6580
B-185,187
755
4T-752∼4T-760
B-185,187
02400
4T-02420∼4T-02476
B-161,163
775
4T-772∼4T-782
B-189
02800
4T-02820∼4T-02878
B-161,163
795
4T-792∼4T-799A
B-191
03000
4T-03062∼4T-03162
B-157
835
4T-832∼4T-850
B-181,185,187
05000
4T-05062∼4T-05185
B-157
855
4T-854∼4T-861
B-189
07000
4T-07079∼4T-07204
B-157,159
895
4T-892∼4T-898
B-193
09000
4T-09062∼4T-09196
B-157
935
4T-932∼4T-941
B-189
11000
4T-11162∼4T-11315
B-167
1200
4T-1220∼4T-1280
B-159
11500
4T-11520∼4T-11590
B-157
1300
4T-1328∼4T-1380
B-157
LM11700
4T-LM11710∼4T-LM11749 B-157
1700
4T-1729∼4T-1780
B-157,159
LM11900
4T-LM11910∼4T-LM11949 B-157
1900
4T-1930∼4T-1985
B-159,161
12000
4T-12175∼4T-12303
B-169
2400
4T-2420∼4T-2474
B-161
12500
4T-12520∼4T-12580
B-157
2500
4T-2520∼4T-2585
B-161,163
M12600
4T-M12610∼4T-M12649
B-157
2600
4T-2631∼4T-2690
B-159,161
LM12700
JS3500
A4000
A6000
B-134
4T-LM12711∼4T-LM12749 B-157
●Tapered Roller Bearings Inch Tapered Roller Bearings index
Series number
Cone or cup number is between
13000
4T-13621∼4T-13687
13800
Series number
Cone or cup number is between
B-165
39500
4T-39520∼4T-39590
B-175,177,179,181
4T-13830∼4T-13889
B-165
41000
4T-41125∼4T-41286
B-161
14000
4T-14116∼4T-14276
B-161,163,165
42000
4T-42346∼4T-42584
B-187,189
15000
4T-15100∼4T-15245
B-159,161,163
42600
4T-42620∼4T-42690
B-183,185
15500
4T-15520∼4T-15590
B-159,161
43000
4T-43131∼4T-43312
B-163
16000
4T-16137∼4T-16284
B-163,165
44000
4T-44143∼4T-44348
B-165,167
17000
4T-17118∼4T-17244
B-161
L44600
4T-L44610∼4T-L44649
B-159
17500
4T-17520∼4T-17580
B-157
45200
4T-45220∼4T-45289
B-171,173,175,177
18500
4T-18520∼4T-18590
B-167
L45400
4T-L45410∼4T-L45449
B-161
18600
4T-18620∼4T-18690
B-169,171
46000
4T-46162∼4T-46368
B-169
18700
4T-18720∼4T-18790
B-173
46700
4T-46720∼4T-46790
B-193
19000
4T-19150∼4T-19281
B-165
47400
4T-47420∼4T-47490
B-181
21000
4T-21075∼4T-21212
B-157
47600
4T-47620∼4T-47686
B-183,185
22700
4T-22720∼4T-22780
B-169
47800
4T-47820∼4T-47896
B-187,189
23000
4T-23100∼4T-23256
B-159
48200
4T-48220∼4T-48290
B-191
24700
4T-24720∼4T-24780
B-167
48300
4T-48320∼4T-48393
B-193
25500
4T-25519∼4T-25592
B-167,169,171
4T-LM48510∼4T-LM48548A
B-163
25800
4T-25820∼4T-25880
B-163,165
48600
4T-48620∼4T-48685
B-193
26800
4T-26820∼4T-26885
B-165,167,169
49500
4T-49520∼4T-49585
B-175
27600
4T-27620∼4T-27691
B-185
52000
4T-52375∼4T-52400
B-189
27800
4T-27820∼4T-27880
B-167
53000
4T-53162∼4T-53377
B-169
28000
4T-28150∼4T-28315
B-167
55000C
4T-55175C∼4T-55443
B-171,173,175
28500
4T-28521∼4T-28584
B-173,175
56000
4T-56425∼4T-56650
B-189
28600
4T-28622∼4T-28682
B-173,177
59000
4T-59200∼4T-59412
B-175
28900
4T-28920∼4T-28995
B-179
64000
4T-64433∼4T-64700
B-191
29500
4T-29520∼4T-29590
B-177,179,181
65000
4T-65237∼4T-65500
B-179
29600
4T-29620∼4T-29688
B-181,183
63500
4T-65320∼4T-65390
B-173
4T-LM29710∼4T-LM29748
B-165
66000
4T-66200∼4T-66462
B-175,177
31500
4T-31520∼4T-31597
B-165
66500
4T-66520∼4T-66589
B-175,177
33000
4T-33225∼4T-33462
B-177,181,183
LM67000
4T-LM67010∼4T-LM67048
B-161
33800
4T-33821∼4T-33895
B-169,173,175
67300
4T-67332∼4T-67391
B-191,193
34000
4T-34274∼4T-34478
B-181,183,185
67700
4T-67720∼4T-67790
B-193
36600
4T-36620∼4T-36691
B-193
68000
4T-68450∼4T-68712
B-191
36900
4T-36920∼4T-36990
B-193
L68100
4T-L68111∼4T-L68149
B-165
37000
4T-37425∼4T-37625
B-189
L69300
4T-JL69310∼4T-JL69349
B-165
LM29700
Page of bearing dimension table
LM48500
B-135
Page of bearing dimension table
●Tapered Roller Bearings Inch Tapered Roller Bearings index
Series number 71000
Cone or cup number is between
Page of bearing dimension table
Series number
Cone or cup number is between
Page of bearing dimension table
4T-71453∼4T-71750
B-191
H414200
4T-H414210∼4T-H414249
B-181,183
4T-72188C∼4T-72487
B-173,175,177
H415600
4T-JH415610∼4T-JH415647
B-183
4T-LM72810∼4T-LM72849
B-159
L432300
4T-L402310∼4T-L432349
B-193
74000
4T-74500∼4T-74850
B-191,193
LM501300
4T-LM501310∼4T-LM501349
B-167
78000
4T-78225∼4T-78551
B-177,179
LM503300
4T-LM503310∼4T-LM503349A
B-171
4T-78214C∼4T-78551
B-175
HH506300
4T-HH506310∼4T-HH506349
B-173
4T-LM78310A∼4T-LM78349A
B-165
LM506800
4T-JLM506810∼4T-JLM506849
B-175
M84500
4T-M84510∼4T-M84548
B-159
LM508700
4T-JLM508710∼4T-JLM508748
B-177
M86600
4T-M86610∼4T-M86649
B-159,161
M511900
4T-JM511910∼4T-JM511946
B-179
M88000
4T-M88010∼4T-M88048
B-163
M515600
4T-JM515610∼4T-JM515649
B-185
HM88500
4T-HM88510∼4T-HM88547
B-161,163
HM516400
4T-HM516410∼4T-HM516448
B-183,185
HM88600
4T-HM88610∼4T-HM88649
B-163,165
HM516800
4T-JHM516810∼4T-JHM516849
B-187
HM89200
4T-HM89210∼4T-HM89249
B-165
LM522500
4T-LM522510∼4T-LM522548
B-189
HM89400
4T-HM89410∼4T-HM89499
B-163,165
HM522600
4T-JHM522610∼4T-JHM522649
B-191
90000
4T-J90354∼4T-J90748
B-187,189
HM534100
4T-JHM534110∼4T-JHM534149
B-193
95000
4T-95475∼4T-95925
B-191,193
LM603000
4T-LM603011∼4T-LM603049
B-171
97000
4T-97500∼4T-97900
B-191
L610500
4T-L610510∼4T-L610549
B-179
99000
4T-99100∼4T-99575
B-193
M612900
4T-JM612910∼4T-JM612949
B-181
LM102900
4T-LM102910∼4T-LM102949
B-171
HM61700
4T-HM617010∼4T-HM617049
B-187
LM104900
4T-JLM104910∼4T-LM104949
B-173
L630300
4T-L630310∼4T-L630349
B-193
M205100
4T-JM205110∼4T-JM205149
B-173
LL639200
4T-LL639210∼4T-LL639249
B-193
M207000
4T-JM207010∼4T-JM207049
B-177
LM704600
4T-JLM704610∼4T-JLM704649
B-173
H211700
4T-JH211710∼4T-JH211749
B-181
LM710900
4T-JLM710910∼4T-JLM710949
B-179
HM212000
4T-HM212010∼4T-HM212049
B-179,181
LM714100
4T-JLM714110∼4T-JLM714149
B-183
4T-L217810∼4T-L217849
B-187
M714200
4T-JM714210∼4T-JM714249
B-183
LL217800
4T-LL217810∼4T-LL217849
B-187
H715300
4T-H714311∼4T-H715348
B-179,181,183
HM218200
4T-HM218210∼4T-HM218248
B-187
M716600
4T-JM716610∼4T-JM716648
B-187
HH221400
4T-HH221410∼4T-HH221449A
B-185,189
M718100
4T-JM718110∼4T-JM718149
B-187
HH224300
4T-HH224310∼4T-HH224346
B-189,191
M719100
4T-JM719113∼4T-JM719149
B-187
HH228300
4T-HH228310∼4T-HH228349
B-191
M720200
4T-JM720210∼4T-JM720249
B-189
4T-M231610∼4T-M231648
B-193
L724300
4T-JL724314∼4T-JL724348
B-191
LM300800
4T-LM300811∼4T-LM300849
B-167
M736100
4T-JM736110∼4T-JM736149
B-193
H307700
4T-JH307710∼4T-JH307749
B-177
M738200
4T-JM738210∼4T-JM738249A
B-193
4T-JHM318410∼4T-JHM318448
B-187
HM801300
4T-HM801310∼4T-HM801349
B-167
4T-L327210∼4T-L327249
B-191
M802000
4T-M802011∼4T-M802048
B-169
72000C LM728000
78000C LM78300
L217800
M231600
HM318400 L327200
B-136
●Tapered Roller Bearings Inch Tapered Roller Bearings index
Series number HM803100
Cone or cup number is between
Page of bearing dimension table
4T-HM803110∼4T-HM803149
B-169
4T-M804010∼4T-M804048
B-171
HM804800
4T-HM804810∼4T-HM804849
B-169,173
LM806600
4T-LM806610∼4T-LM806649
B-175
HM807000
4T-HM807010∼4T-HM807049
B-171,173,175
4T-L812111∼4T-L812148
B-181
LM813000
4T-JLM813010∼4T-JLM813049
B-181
HM813800
4T-HM813810∼4T-HM813844
B-177,179,181
4T-L814710∼4T-L814749
B-183
LM814800
4T-LM814810∼4T-LM814849
B-185
M822000
4T-JM822010∼4T-JM822049
B-191
HM903200
4T-HM903210∼4T-HM903249
B-169
4T-M903310∼4T-M903345
B-169
HM907600
4T-HM907614∼4T-HM907643
B-175
HM911200
4T-HM911210∼4T-HM911245
B-175,179
H913800
4T-H913810∼4T-JH913848
B-177,179,183
H917800
4T-H917810∼4T-H917840
B-185
H924000
4T-H924010∼4T-H924045
B-191
4T-HM926710∼4T-HM926747
B-191
M804000
L812100
L814700
M903300
HM926700
How to use the Index For example, when accessing the dimension tables with the bearing numbers 4T-HM911244 and 4THM911216, we see that the inner ring and outer ring bearing numbers are in the range 4T-HM911210∼ 4T-HM911245. Therefore, information about this bearing will be on either page B-175 or B-179.
B-137
●Tapered Roller Bearings Metric system sizes T r1
C
r B d
D
a
d 15∼30mm Boundary dimensions dynamic mm d
D
Basic load ratings static dynamic
kN
T
B
C
rs min
1
r ls min
1
Limiting speeds static
kgf
Bearing numbers
rpm
Cr
Cor
Cr
Cor
grease
oil
15
42
14.25
13
11
1
1
23.2
20.8
2,370
2,120
9,900
13,000
4T-30302
17
40 40 40 47
13.25 17.25 17.25 15.25
12 16 16 14
11 14 14 12
1 1 1 1
1 1 1 1
20.5 27.3 26.2 28.9
20.3 28.3 28.2 26.3
2,090 2,790 2,670 2,940
2,070 2,880 2,870 2,680
9,900 9,900 9,900 9,000
13,000 13,000 13,000 12,000
4T-30203 4T-32203 2 4T-32203R 4T-30303
20
42 47 47 52 52 52
15 15.25 19.25 16.25 16.25 22.25
15 14 18 16 16 21
12 12 15 13 12 18
0.6 1 1 1.5 1.5 1.5
0.6 1 1 1.5 1.5 1.5
24.9 28.2 36.5 35.5 31.0 46.5
27.9 28.7 39.5 34.0 31.0 48.5
2,540 2,870 3,700 3,600 3,150 4,750
2,840 2,930 4,000 3,450 3,150 4,950
9,500 8,800 8,800 8,000 7,600 8,000
13,000 12,000 12,000 11,000 10,000 11,000
4T-32004X 4T-30204 4T-32204 4T-30304A 4T-30304CA 4T-32304
22
44
15
15
11.5
0.6
0.6
27.0
31.5
2,760
3,250
8,900
12,000
4T-320/22X
25
47 47 52 52 52 52 52 52 62 62 62 62
15 17 16.25 19.25 19.25 19.25 19.25 22 18.25 18.25 18.25 25.25
15 17 15 18 18 18 18 22 17 17 17 24
11.5 14 13 16 15 15 15 18 15 14 13 20
0.6 0.6 1 1 1 1 1 1 1.5 1.5 1.5 1.5
0.6 0.6 1 1 1 1 1 1 1.5 1.5 1.5 1.5
27.8 32.5 31.5 42.0 38.0 38.0 34.5 47.5 48.5 41.5 40.5 61.5
33.5 40.5 34.0 47.0 43.0 46.5 42.0 57.5 47.5 41.5 43.5 64.5
2,830 3,300 3,200 4,300 3,850 3,900 3,500 4,850 4,950 4,250 4,150 6,250
3,450 4,150 3,450 4,800 4,400 4,750 4,250 5,850 4,850 4,250 4,450 6,600
7,900 8,000 7,300 7,300 7,300 7,100 7,100 7,300 6,700 6,400 5,900 6,700
11,000 11,000 9,800 9,800 9,800 9,400 9,400 9,800 8,900 8,500 7,800 8,900
4T-32005X 4T-33005 4T-30205 4T-32205 2 4T-32205R 4T-32205C 2 4T-32205CR 4T-33205 4T-30305 4T-30305C 4T-30305D 4T-32305
28
52 58
16 24
16 24
12 19
1 1
1 1
33.0 58.0
40.5 69.5
3,400 5,950
4,150 7,100
7,300 6,700
9,700 8,900
4T-320/28X 4T-332/28
30
55 55 62 62 62 62 72
17 20 17.25 21.25 21.25 25 20.75
17 20 16 20 20 25 19
13 16 14 17 17 19.5 16
1 1 1 1 1 1 1.5
1 1 1 1 1 1 1.5
37.5 42.5 43.5 54.5 50.0 65.0 60.0
46.0 54.0 48.0 64.0 60.0 77.0 61.0
3,800 4,300 4,450 5,600 5,100 6,600 6,100
4,700 5,500 4,900 6,550 6,100 7,850 6,200
6,900 6,900 6,300 6,300 6,100 6,300 5,700
9,200 9,200 8,400 8,400 8,100 8,400 7,600
4T-32006X 4T-33006 4T-30206 4T-32206 4T-32206C 4T-33206 4T-30306
1 Minimal allowable dimension for chamfer dimension r or r1. 2 This bearing does not incorporate the subunit dimensions.
B-138
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Da
Axial load factors
kg
Db
Sa
Sb
ras
r1as
min
min
max
max
a
e
Y2
Yo
max
min
min
Mass
(approx.)
2FB
20.5
22
36.5
35
38
2
3
1
1
9.5
0.29
2.11
1.16
0.098
2DB 2DD
22.5 22.5 22.5 22.5
23 23 22 24
34.5 34.5 34.5 41.5
33 33 33 40
37 37 36.5 42
2 2 2 3
2 3 3 3.5
1 1 1 1
1 1 1 1
9.5 11.5 11 10.5
0.35 0.31 0.35 0.29
1.74 1.92 1.74 2.11
0.96 1.06 0.96 1.16
0.08 0.102 0.104 0.134
2FD
24.5 25.5 25.5 28.5 28.5 28.5
25 27 26 28 27.5 27
37.5 41.5 41.5 43.5 43.5 43.5
36 40 39 42.5 39.5 43
39 44 43 47.5 48 47
3 2 2 3 3 3
3 3 4 3 4 4
0.6 1 1 1.5 1.5 1.5
0.6 1 1 1.5 1.5 1.5
10.5 11.5 12.5 10.5 13.5 14
0.37 0.35 0.33 0.30 0.55 0.30
1.60 1.74 1.81 2.00 1.10 2.00
0.88 0.96 1.00 1.10 0.60 1.10
0.097 0.127 0.16 0.176 0.17 0.245
3CC
26.5
27
39.5
38
41
3
3.5
0.6
0.6
11
0.40
1.51
0.83
0.106
4CC 2CE 3CC 2CD
7FB 2FD
29.5 29.5 30.5 30.5 30.5 30.5 30.5 30.5 33.5 33.5 33.5 33.5
30 29 31 31 31 30 30 30 34 34 34 32
42.5 42.5 46.5 46.5 46.5 46.5 46.5 46.5 53.5 53.5 53.5 53.5
40 40 44 43 43 42 42 43 52 48 45.5 52
44 43.5 48 48 48 49 49 49 57 58 58.5 57
3 3 2 2 2 2 2 4 3 3 3 3
3.5 3 3 4 4 4 4 4 3 4 5 5
0.6 0.6 1 1 1 1 1 1 1.5 1.5 1.5 1.5
0.6 0.6 1 1 1 1 1 1 1.5 1.5 1.5 1.5
12 11 12.5 14 13.5 16 16 14 13 16 20 16
0.43 0.29 0.37 0.36 0.37 0.58 0.55 0.35 0.30 0.55 0.83 0.30
1.39 2.07 1.60 1.67 1.60 1.03 1.10 1.71 2.00 1.10 0.73 2.00
0.77 1.14 0.88 0.92 0.88 0.57 0.60 0.94 1.10 0.60 0.40 1.10
0.114 0.13 0.154 0.187 0.181 0.19 0.19 0.217 0.272 0.264 0.284 0.381
4CC 2DE
33.5 33.5
33 34
46.5 52.5
45 49
49 55
3 5
4 5
1 1
1 1
12.5 15.5
0.43 0.34
1.39 1.77
0.77 0.97
0.146 0.293
4CC 2CE 3DB 3DC 5DC 2DE 2FB
35.5 35.5 35.5 35.5 35.5 35.5 38.5
35 35.5 37 37 35 36 40
49.5 49.5 56.5 56.5 56.5 56.5 63.5
48 46.5 53 52 49 53 62
52 52 57 58 59.5 59 66
3 3 2 2.5 2 5 3
4 4 3 4 5 5.5 4.5
1 1 1 1 1 1 1.5
1 1 1 1 1 1 1.5
13.5 13 13.5 15.5 18.5 16 15
0.43 0.29 0.37 0.37 0.56 0.34 0.31
1.39 2.06 1.60 1.60 1.07 1.76 1.90
0.77 1.13 0.88 0.88 0.59 0.97 1.05
0.166 0.201 0.241 0.301 0.294 0.344 0.408
2FB 3CC 2DB 2DD 2FB
5CD 2DE 2FB
備考1．ET円すいころ軸受も製作しているのでNTNに御照会ください。
B-139
●Tapered Roller Bearings Metric system sizes T r1
C
r B d
D
a
d 30∼45mm Boundary dimensions dynamic mm d
kN 1
1
Limiting speeds static
kgf
Bearing numbers
rpm
Cr
Cor
Cr
Cor
grease
1.5 1.5 1.5 1.5 1.5
58.5 48.5 81.0 79.0 70.0
58.5 51.5 90.0 94.0 88.5
6,000 4,950 8,250 8,050 7,150
5,950 5,250 9,150 9,550 9,050
5,500 5,000 5,700 5,500 5,500
4T-30306CA 7,300 4T-30306D 6,700 4T-32306 7,600 7,300 ＊4T-32306C 2 4T-32306CR 7,300
1 1 1.5
1 1 1.5
37.0 70.5 84.0
46.5 85.0 102
3,750 7,200 8,600
4,750 8,650 10,400
6,600 6,000 5,200
8,700 8,000 6,900
4T-320/32X 4T-332/32 4T-323/32C
11.5 14 17 15 19 19 18 22 18 17 15 25 25
0.6 1 1 1.5 1.5 1.5 1.5 1.5 2 2 2 2 2
0.6 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
27.4 41.5 50.5 55.5 72.5 68.0 62.0 87.5 75.0 66.5 63.5 101 93.0
37.5 52.5 66.5 61.5 87.0 85.5 78.5 109 77.0 68.5 70.0 115 117
2,790 4,250 5,150 5,650 7,400 6,950 6,300 8,900 7,650 6,750 6,450 10,300 9,500
3,850 5,350 6,800 6,250 8,900 8,750 8,000 11,200 7,900 7,000 7,100 11,700 12,000
6,800 6,100 6,100 5,500 5,500 5,300 5,300 5,500 5,000 4,800 4,400 5,000 4,800
9,000 8,100 8,100 7,400 7,400 7,100 7,100 7,400 6,600 6,400 5,800 6,600 6,400
32907XU 4T-32007X 4T-33007 4T-30207 4T-32207 4T-32207C 2 4T-32207CR 4T-33207 4T-30307 4T-30307C 4T-30307D 4T-32307 4T-32307C
15 19 22 26 18 23 32 32.5 23 23 23 33 33
12 14.5 18 20.5 16 19 25 28 20 19 17 27 27
0.6 1 1 1.5 1.5 1.5 1.5 2.5 2 2 2 2 2
0.6 1 1 1.5 1.5 1.5 1.5 2 1.5 1.5 1.5 1.5 1.5
32.5 50.0 59.5 79.5 61.0 79.5 103 118 91.5 83.0 77.0 122 110
48.0 65.5 82.5 103 67.0 93.5 132 144 102 87.0 85.5 150 140
3,350 5,100 6,050 8,100 6,250 8,100 10,500 12,000 9,350 8,450 7,850 12,500 11,300
4,900 6,650 8,400 10,500 6,850 9,550 13,400 14,700 10,400 8,900 8,700 15,300 14,300
5,900 5,300 5,300 5,200 4,900 4,900 4,900 4,600 4,400 4,200 3,900 4,400 4,200
7,800 7,100 7,100 6,900 6,600 6,600 6,600 6,200 5,900 5,600 5,200 5,900 5,600
32908XU 4T-32008X 4T-33008 4T-33108 4T-30208 4T-32208 4T-33208 4T-T2EE040 4T-30308 4T-30308C 4T-30308D 32308U 4T-32308C
15
12
0.6
0.6
33.5
51.5
3,450
5,250
5,300
7,000
＊32909XU
T
B
C
rs min
30
72 72 72 72 72
20.75 20.75 28.75 28.75 28.75
19 19 27 27 27
15 14 23 23 23
1.5 1.5 1.5 1.5 1.5
32
58 65 75
17 26 29.75
17 26 28
13 20.5 23
35
55 62 62 72 72 72 72 72 80 80 80 80 80
14 18 21 18.25 24.25 24.25 24.25 28 22.75 22.75 22.75 32.75 32.75
14 18 21 17 23 23 23 28 21 21 21 31 31
40
62 68 68 75 80 80 80 85 90 90 90 90 90
15 19 22 26 19.75 24.75 32 33 25.25 25.25 25.25 35.25 35.25
68
15
45
D
Basic load ratings static dynamic
r ls min
oil
1 Minimal allowable dimension for chamfer dimension r or r1. 2 This bearing does not incorporate the subunit dimensions. Note: When selecting bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-140
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
Abutment and fillet dimensions mm da
db
min
max
max
7FB 2FD 5FD
38.5 38.5 38.5 38.5 38.5
39.5 39 38 37 37
4CC 2DE 5FD
37.5 37.5 40.5
2BD 4CC 2CE 3DB 3DC 5DC 2DE 2FB 7FB 2FE 5FE 2BC 3CD 2BE 2CE 3DB 3DC 2DE 2EE 2FB 7FB 2FD 5FD 2BC
Load Constant center mm
Da
Axial load factors
Mass kg
Db
Sa
Sb
ras
r1as
min
min
min
min
max
max
a
e
Y2
Yo
63.5 63.5 63.5 63.5 63.5
57 55 59 57 57
67 68 66 68 67.5
3 3 3 2 2
5.5 6.5 5.5 5.5 5.5
1.5 1.5 1.5 1.5 1.5
1.5 1.5 1.5 1.5 1.5
17.5 23.5 18.5 23 23
0.47 0.83 0.31 0.55 0.61
1.27 0.73 1.90 1.10 0.99
0.70 0.40 1.05 0.60 0.54
0.398 0.398 0.583 0.592 0.594
38 38 39
52.5 59.5 66.5
50 55 61
55 62 71
3 5 3
4 5.5 6.5
1 1 1.5
1 1 1.5
14.5 17 23
0.45 0.35 0.55
1.32 1.73 1.10
0.73 0.95 0.60
0.181 0.395 0.659
39.5 40.5 40.5 43.5 43.5 43.5 43.5 43.5 45 45 45 45 45
40 40 40.5 44 43 42 42 42 45 44 44 43 43
50.5 56.5 56.5 63.5 63.5 63.5 63.5 63.5 71.5 71.5 71.5 71.5 71.5
48 54 52 62 61 59 59 61 70 63.5 62 66 66
52.5 59 59 67 67 68 68 68 74 75.5 76.5 74 76
2.5 4 3 3 3 3 3 5 3 3 3 3 3
2.5 4 4 3 5 6 6 6 4.5 5.5 7.5 7.5 7.5
0.6 1 1 1.5 1.5 1.5 1.5 1.5 2 2 2 2 2
0.6 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
10.5 15.5 14 15 17.5 21.5 20.5 18.5 17 20.5 26 20.5 25
0.29 0.45 0.31 0.37 0.37 0.58 0.55 0.35 0.31 0.55 0.83 0.31 0.55
2.06 1.32 1.97 1.60 1.60 1.03 1.10 1.70 1.90 1.10 0.73 1.90 1.10
1.13 0.73 1.08 0.88 0.88 0.57 0.60 0.93 1.05 0.60 0.40 1.05 0.60
0.121 0.224 0.263 0.344 0.457 0.461 0.461 0.531 0.540 0.517 0.530 0.787 0.797
44.5 45.5 45.5 48.5 48.5 48.5 48.5 52 50 50 50 50 50
45.5 46 46 47 49 48 47 48 52 50 50 50 48
57.5 62.5 62.5 66.5 71.5 71.5 71.5 75 81.5 80 81.5 81.5 81.5
54 60 60 65 69 68 67 70 77 72 71 73 72
58.5 65 64 71 75 75 76 80 82 85.5 86.5 82 84
3 4 2.5 4 3 3 5 5 3 3.5 3 3 3
3 4.5 4 5.5 3.5 5.5 7 5 5 6 8 8 8
0.6 1 1 1.5 1.5 1.5 1.5 2 2 2 2 2 2
0.6 1 1 1.5 1.5 1.5 1.5 2 1.5 1.5 1.5 1.5 1.5
11.5 15 15 18 16.5 19 21 22.5 19.5 23 29.5 23 27.5
0.29 0.38 0.28 0.36 0.37 0.37 0.36 0.34 0.35 0.55 0.83 0.35 0.55
2.07 1.58 2.12 1.69 1.60 1.60 1.68 1.74 1.74 1.10 0.73 1.74 1.10
1.14 0.87 1.17 0.93 0.88 0.88 0.92 0.96 0.96 0.60 0.40 0.96 0.60
0.161 0.273 0.312 0.494 0.435 0.558 0.728 0.907 0.769 0.728 0.738 1.08 1.1
50
50
63.5
59.5
64.5
3
3
0.6
0.6
12
0.32
1.88
1.04
0.188
備考1．ET円すいころ軸受も製作しているのでNTNに御照会ください。
B-141
(approx.)
●Tapered Roller Bearings Metric system sizes T r1
C
r B d
D
a
d 45∼60mm Boundary dimensions dynamic mm d
kN 1
1
grease
57.5 66.0 84.5 67.5 82.0 107 111 96.0 154
76.5 93.5 115 78.5 100 141 126 109 191
5,850 6,750 8,650 6,900 8,350 10,900 11,300 9,800 15,700
7,800 9,550 11,700 8,000 10,200 14,400 12,800 11,100 19,500
4,800 4,800 4,700 4,400 4,400 4,400 4,000 3,500 4,000
6,400 6,400 6,200 5,900 5,900 5,900 5,300 4,600 5,300
4T-32009X 4T-33009 4T-33109 4T-30209 4T-32209 4T-33209 4T-30309 4T-30309D 32309U
0.6 0.6 1 1 1.5 1.5 1.5 1.5 2.5 3 2 2 2
35.5 31.5 62.5 69.5 86.5 77.0 87.5 115 151 107 133 113 184
57.0 50.5 88.0 103 121 93.0 109 158 190 132 152 130 232
3,650 3,200 6,400 7,100 8,850 7,850 8,900 11,700 15,400 10,900 13,500 11,600 18,700
5,800 5,150 9,000 10,500 12,400 9,450 11,100 16,100 19,400 13,500 15,500 13,300 23,600
4,700 4,700 4,400 4,400 4,200 4,000 4,000 4,000 3,800 3,400 3,600 3,200 3,600
6,300 6,300 5,800 5,800 5,600 5,300 5,300 5,300 5,100 4,500 4,800 4,200 4,800
＊32910XU 2 32910 4T-32010X 4T-33010 4T-33110 4T-30210 4T-32210 4T-33210 4T-T2ED050 4T-T7FC050 4T-30310 4T-30310D 32310U
1 1.5 1.5 1.5 2 2 2 2.5 2.5 2.5
1 1.5 1.5 1.5 1.5 1.5 1.5 2 2 2
44.5 80.5 91.5 111 93.0 108 138 155 132 215
73.5 118 138 155 111 134 188 179 154 275
4,550 8,200 9,350 11,300 9,500 11,000 14,100 15,800 13,500 21,900
7,500 12,000 14,100 15,800 11,300 13,700 19,100 18,300 15,700 28,000
4,300 4,000 4,000 3,900 3,600 3,600 3,600 3,300 2,900 3,300
5,700 5,400 5,400 5,200 4,900 4,900 4,900 4,400 3,800 4,400
32911XU 4T-32011X 4T-33011 4T-33111 4T-30211 4T-32211 4T-33211 4T-30311 4T-30311D 32311U
1 1.5 1.5 1.5
1 1.5 1.5 1.5
51.0 82.0 93.5 113
83.0 123 145 164
5,200 8,350 9,550 11,600
8,450 12,500 14,700 16,700
4,000 3,700 3,700 3,600
5,300 4,900 4,900 4,700
32912XA 4T-32012X 4T-33012 4T-33112
1 1 1.5 1.5 1.5 1.5 2 2 2
1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5
15 14 20 24 26 20 23 32 35 29 27 27 40
12 12 15.5 19 20 17 19 24.5 30 22 23 19 33
0.6 0.6 1 1 1.5 1.5 1.5 1.5 2.5 3 2.5 2.5 2.5
17 23 27 30 22.75 26.75 35 31.5 31.5 45.5
17 23 27 30 21 25 35 29 29 43
14 17.5 21 23 18 21 27 25 21 35
17 23 27 30
17 23 27 30
14 17.5 21 23
C
45
75 75 80 85 85 85 100 100 100
20 24 26 20.75 24.75 32 27.25 27.25 38.25
20 24 26 19 23 32 25 25 36
50
72 72 80 80 85 90 90 90 100 105 110 110 110
15 15 20 24 26 21.75 24.75 32 36 32 29.25 29.25 42.25
55
80 90 90 95 100 100 100 120 120 120
60
85 95 95 100
rpm Cor
15.5 19 20.5 16 19 25 22 18 30
B
kgf
Bearing numbers
Cr
r ls min
T
Limiting speeds static
Cor
rs min
D
Basic load ratings static dynamic
1 Minimal allowable dimension for chamfer dimension r or r1. 2 This bearing does not incorporate the subunit dimensions.
Cr
B-142
oil
2
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Da
Axial load factors
Mass kg
Db
Sa
Sb
ras
r1as
min
min
max
max
a
e
Y2
Yo
(approx.)
max
min
min
67 67 69 74 73 72 86 79 82
72 71 77 80 81 81 93 96 93
4 4 4 3 3 5 3 3 3
4.5 5 5.5 4.5 5.5 7 5 9 8
1 1 1.5 1.5 1.5 1.5 2 2 2
1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5
16.5 16 19.5 18 20 22 21 32.5 25.5
0.39 0.29 0.38 0.40 0.40 0.39 0.35 0.83 0.35
1.53 2.04 1.57 1.48 1.48 1.56 1.74 0.73 1.74
0.84 1.12 0.86 0.81 0.81 0.86 0.96 0.40 0.96
0.346 0.398 0.542 0.495 0.607 0.783 1.01 0.958 1.46
3CC 2CE 3CE 3DB 3DC 3DE 2FB 7FB 2FD
50.5 50.5 53.5 53.5 53.5 53.5 55 55 55
51 51 52 54 53 52 59 56 56
69.5 69.5 71.5 76.5 76.5 76.5 91.5 91.5 91.5
2BC 3CC 2CE 3CE 3DB 3DC 3DE 2ED 7FC 2FB 7FB 2FD
54.5 54.5 55.5 55.5 58.5 58.5 58.5 58.5 62 64 62 62 62
55 55 56 56 56 58 58 57 59 60 65 62 62
67.5 67.5 74.5 74.5 76.5 81.5 81.5 81.5 88 91 100 100 100
63.5 63.5 72 72 74 79 78 77 84 78 95 87 90
69 69.5 77 76 82 85 85 87 94 100 102 105 102
3 3 4 4 4 3 3 5 6 4 3 3 3
3 3 4.5 5 6 4.5 5.5 7.5 6 10 6 10 9
0.6 0.6 1 1 1.5 1.5 1.5 1.5 2 2.5 2 2 2
0.6 0.6 1 1 1.5 1.5 1.5 1.5 2 2.5 2 2 2
13.5 14.5 17.5 17.5 20.5 19.5 21 23.5 25.5 36.5 23 35 28.5
0.34 0.36 0.42 0.32 0.41 0.42 0.42 0.41 0.34 0.87 0.35 0.83 0.35
1.76 1.67 1.42 1.90 1.46 1.43 1.43 1.45 1.75 0.69 1.74 0.73 1.74
0.97 0.92 0.78 1.04 0.80 0.79 0.79 0.80 0.96 0.38 0.96 0.40 0.96
0.191 0.192 0.366 0.433 0.58 0.563 0.648 0.852 1.31 1.23 1.31 1.25 1.92
2BC 3CC 2CE 3CE 3DB 3DC 3DE 2FB 7FB 2FD
60.5 63.5 63.5 63.5 65 65 65 67 67 67
60.5 63 63 62 64 63 62 71 68 68
74.5 81.5 81.5 86.5 91.5 91.5 91.5 110 110 110
70.5 81 81 83 88 87 85 104 94 99
76.5 86 86 91 94 95 96 111 113 111
3 4 5 5 4 4 6 4 4 4
3 5.5 6 7 4.5 5.5 8 6.5 10.5 10.5
1 1.5 1.5 1.5 2 2 2 2 2 2
1 1.5 1.5 1.5 1.5 1.5 1.5 2 2 2
14.5 20 19.5 22 21 22.5 25.5 24.5 38 30.5
0.31 0.41 0.31 0.37 0.40 0.40 0.40 0.35 0.83 0.35
1.94 1.48 1.92 1.60 1.48 1.48 1.50 1.74 0.73 1.74
1.07 0.81 1.06 0.88 0.81 0.81 0.83 0.96 0.40 0.96
0.274 0.563 0.643 0.846 0.74 0.876 1.15 1.66 1.59 2.44
4CC 2CE 3CE
65.5 68.5 68.5 68.5
65.5 67 67 67
79.5 86.5 86.5 91.5
76.5 85 85 88
82 91 90 96
3 4 5 5
3 5.5 6 7
1 1.5 1.5 1.5
1 1.5 1.5 1.5
15.5 21 20.5 23.5
0.33 0.43 0.33 0.40
1.80 1.39 1.83 1.51
0.99 0.77 1.01 0.83
0.296 0.576 0.684 0.912
Note: When selecting bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-143
●Tapered Roller Bearings Metric system sizes T r1
C
B D
d 60∼75mm Boundary dimensions dynamic mm d
D
T
B
Basic load ratings static dynamic kN
C
rs min
1
1
r ls min
Cr
Limiting speeds static
kgf Cor
1 Minimal allowable dimension for chamfer dimension r or r1.
B-144
Cr
rpm Cor
grease
oil
Bearing numbers
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Da max
Axial load factors
Mass kg
Db
Sa
Sb
ras
r1as
min
min
min
min
max
max
a
e
Y2
Yo
(approx.)
3EB 3EC 3EE 2EE 7FC 2FB 7FB 2FD
70 70 70 72 74 74 74 74
70 69 69 70 72 77 73 74
101.5 101.5 101.5 103 111 118 118 118
96 95 93 98 94 112 103 107
103 104 105 109 119 120 124 120
4 4 6 6 4 4 4 4
4.5 5.5 9 7 11 7.5 11.5 11.5
2 2 2 2 2.5 2.5 2.5 2.5
1.5 1.5 1.5 2 2.5 2 2 2
22 25 27.5 28.5 42 26.5 40.5 32
0.40 0.40 0.40 0.33 0.82 0.35 0.83 0.35
1.48 1.48 1.48 1.80 0.73 1.74 0.73 1.74
0.81 0.81 0.82 0.99 0.40 0.96 0.40 0.96
0.949 1.18 1.55 1.86 2 2.06 1.97 3.02
2BC 4CC 2CE 3DE 3EB 3EC 3EE 2GB 7GB 2GD
70.5 73.5 73.5 73.5 75 75 75 79 79 79
70 72 72 73 77 75 74 83 79 80
84.5 91.5 91.5 101.5 111.5 111.5 111.5 128 128 128
80 90 89 96 106 104 102 122 111 117
86.5 97 96 106 113 115 115 130 133 130
3 4 5 6 4 4 7 4 4 4
3 5.5 6 7.5 4.5 5.5 9 8 13 12
1 1.5 1.5 1.5 2 2 2 2.5 2.5 2.5
1 1.5 1.5 1.5 1.5 1.5 1.5 2 2 2
16.5 22.5 21.5 26 23.5 27 29.5 28.5 44 34.5
0.35 0.46 0.35 0.39 0.40 0.40 0.39 0.35 0.83 0.35
1.70 1.31 1.72 1.55 1.48 1.48 1.54 1.74 0.73 1.74
0.93 0.72 0.95 0.85 0.81 0.81 0.85 0.96 0.40 0.96
0.315 0.63 0.732 1.28 1.18 1.58 1.98 2.55 2.42 3.66
2BC 4CC 2CE 3EB 3EC 3EE 7FC 2GB 7GB 2GD
75.5 78.5 78.5 80 80 80 84 84 84 84
75 78 79 81 80 79 82 89 84 86
94.5 101.5 101.5 116.5 116.5 116.5 126 138 138 138
90 98 99 110 108 107 106 130 118 125
96 105 105 118 119 120 135 140 142 140
4 5 5 4 4 7 5 4 4 4
4 6 5.5 5 6 9 12 8 13 12
1 1.5 1.5 2 2 2 2.5 2.5 2.5 2.5
1 1.5 1.5 1.5 1.5 1.5 2.5 2 2 2
18 24 22.5 25.5 28.5 31 47.5 30 47 36.5
0.32 0.43 0.28 0.42 0.42 0.41 0.87 0.35 0.83 0.35
1.90 1.38 2.11 1.43 1.43 1.47 0.69 1.74 0.73 1.74
1.05 0.76 1.16 0.79 0.79 0.81 0.38 0.96 0.40 0.96
0.487 0.848 1.07 1.26 1.68 2.1 2.61 3.06 2.92 4.46
2BC 4CC 2CE 4DB 4DC 3EE 2GB 7GB
80.5 83.5 83.5 85 85 85 89 89
80 83 85 85 85 83 95 91
99.5 106.5 106.5 121.5 121.5 121.5 148 148
94 103 101 115 114 111 139 127
101.5 110 110.5 124 125 125 149 151
4 5 6 4 4 7 4 6
4 6 5.5 5 6 10 9 14
1 1.5 1.5 2 2 2 2.5 2.5
1 1.5 1.5 1.5 1.5 1.5 2 2
19 25.5 23 27 30 32 32 50
0.33 0.46 0.30 0.44 0.44 0.43 0.35 0.83
1.80 1.31 2.01 1.38 1.38 1.40 1.74 0.73
0.99 0.72 1.11 0.76 0.76 0.77 0.96 0.40
0.511 0.909 1.11 1.41 1.74 2.2 3.57 3.47
備考1．ET-4T円すいころ軸受の寿命補正係数a2の値はB-000ページを参照ください。 2．ET円すいころ軸受も製作しているのでNTNに御照会ください。
B-145
●Tapered Roller Bearings Metric system sizes T r1
C
r B d
D
a
d 75∼95mm Boundary dimensions dynamic mm d
D
T
Basic load ratings static dynamic kN
B
C
rs min
1
1
Limiting speeds static
kgf
Bearing numbers
rpm
r ls min
Cr
Cor
Cr
Cor
grease
oil
75
160
58
55
45
3
2.5
355
470
36,000
47,500
2,400
3,200
32315U
80
110 125 125 140 140 140 170 170 170
20 29 36 28.25 35.25 46 42.5 42.5 61.5
20 29 36 26 33 46 39 39 58
16 22 29.5 22 28 35 33 27 48
1 1.5 1.5 2.5 2.5 2.5 3 3 3
1 1.5 1.5 2 2 2 2.5 2.5 2.5
72.0 139 173 160 199 250 291 236 395
121 216 284 200 265 365 350 283 525
7,350 14,200 17,600 16,300 20,300 25,500 29,700 24,100 40,500
12,400 22,000 29,000 20,400 27,000 37,500 36,000 28,900 53,500
3,000 2,800 2,800 2,500 2,500 2,500 2,300 2,000 2,300
4,000 3,700 3,700 3,400 3,400 3,400 3,000 2,700 3,000
32916XU 32016XU 33016U 30216U 32216U 33216U 30316U 30316DU 32316U
85
120 130 130 150 150 150 180 180 180
23 29 36 30.5 38.5 49 44.5 44.5 63.5
23 29 36 28 36 49 41 41 60
18 22 29.5 24 30 37 34 28 49
1.5 1.5 1.5 2.5 2.5 2.5 4 4 4
1.5 1.5 1.5 2 2 2 3 3 3
94.0 142 176 183 224 284 305 247 405
157 224 296 232 300 420 365 293 525
9,600 14,400 18,000 18,600 22,900 29,000 31,000 25,200 41,000
16,100 22,900 30,000 23,600 30,500 43,000 37,000 29,900 53,500
2,800 2,600 2,600 2,400 2,400 2,400 2,100 1,900 2,100
3,800 3,500 3,500 3,200 3,200 3,200 2,900 2,500 2,900
32917XU 32017XU 33017U 30217U 32217U 33217U 30317U 30317DU 32317U
90
125 140 140 160 160 190 190 190
23 32 39 32.5 42.5 46.5 46.5 67.5
23 32 39 30 40 43 43 64
18 24 32.5 26 34 36 30 53
1.5 2 2 2.5 2.5 4 4 4
1.5 1.5 1.5 2 2 3 3 3
97.5 168 215 208 262 335 270 450
168 270 360 267 360 405 320 595
9,950 17,200 21,900 21,200 26,700 34,500 27,600 46,000
17,100 27,600 36,500 27,200 36,500 41,500 33,000 60,500
2,700 2,500 2,500 2,200 2,200 2,000 1,800 2,000
3,600 3,300 3,300 3,000 3,000 2,700 2,400 2,700
32918XU 32018XU 33018U 30218U 32218U 30318U 30318DU 32318U
95
130 145 145 170 170 200 200 200
23 32 39 34.5 45.5 49.5 49.5 49.5
23 32 39 32 43 45 45 45
18 24 32.5 27 37 38 38 32
1.5 2 2 3 3 4 3 4
1.5 1.5 1.5 2.5 2.5 3 3 3
101 171 219 226 299 365 315 296
178 280 375 290 415 445 365 355
10,300 17,500 22,400 23,000 30,500 37,500 32,500 30,000
18,200 28,600 38,000 29,600 42,500 45,500 37,500 36,500
2,500 2,300 2,300 2,100 2,100 1,900 1,900 1,700
32919XU 3,400 32019XU 3,100 3,100 33019U 2,800 30219U 2,800 32219U 2,500 ＊30319U 2 2,500 30319 2,200 30319DU
1 Minimal allowable dimension for chamfer dimension r or r1. 2 This bearing does not incorporate the subunit dimensions.
B-146
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Db
Sa
Sb
ras
r1as
min
min
min
min
max
max
148
133
149
4
13
2.5
2
max
a
Mass kg
e
Y2
Yo
39
0.35
1.74
0.96
5.35
(approx.)
2GD
89
2BC 3CC 2CE 3EB 3EC 3EE 2GB 7GB 2GD
85.5 88.5 88.5 92 92 92 94 94 94
85 89 89 91 90 89 102 97 98
104.5 116.5 116.5 130 130 130 158 158 158
99 112 112 124 122 119 148 134 142
106.5 120 119 132 134 135 159 159 159
4 6 6 4 4 7 4 6 4
4 7 6.5 6 7 11 9.5 15.5 13.5
1 1.5 1.5 2 2 2 2.5 2.5 2.5
1 1.5 1.5 2 2 2 2 2 2
20 27 25 27.5 31 35 34 53.5 41.5
0.35 0.42 0.28 0.42 0.42 0.43 0.35 0.83 0.35
1.71 1.42 2.16 1.43 1.43 1.41 1.74 0.73 1.74
0.94 0.78 1.19 0.79 0.79 0.78 0.96 0.40 0.96
0.54 1.28 1.6 1.72 2.18 2.92 4.41 4.11 6.41
2BC 4CC 2CE 3EB 3EC 3EE 2GB 7GB 2GD
93.5 93.5 93.5 97 97 97 103 103 103
92 94 94 97 96 95 107 103 102
111.5 121.5 121.5 140 140 140 166 166 166
111 117 118 132 130 128 156 143 150
115 125 125 141 142 144 167 169 167
4 6 6 5 5 7 5 6 5
5 7 6.5 6.5 8.5 12 10.5 16.5 14.5
1.5 1.5 1.5 2 2 2 3 3 3
1.5 1.5 1.5 2 2 2 2.5 2.5 2.5
21 28.5 26 30 33.5 37.5 35.5 56 43
0.33 0.44 0.29 0.42 0.42 0.42 0.35 0.83 0.35
1.83 1.36 2.06 1.43 1.43 1.43 1.74 0.73 1.74
1.01 0.75 1.13 0.79 0.79 0.79 0.96 0.40 0.96
0.773 1.35 1.7 2.14 2.75 3.58 5.2 4.85 7.15
2BC 3CC 2CE 3FB 3FC 2GB 7GB 2GD
98.5 100 100 102 102 108 108 108
96 100 100 103 102 113 109 108
116.5 131.5 131.5 150 150 176 176 176
112.5 125 127 140 138 165 151 157
120.5 134 135 150 152 177 179 177
4 6 7 5 5 5 6 5
5 8 6.5 6.5 8.5 10.5 16.5 14.5
1.5 2 2 2 2 3 3 3
1.5 1.5 1.5 2 2 2.5 2.5 2.5
22 30 28 32 36 37.5 59 45.5
0.34 0.42 0.27 0.42 0.42 0.35 0.83 0.35
1.75 1.42 2.23 1.43 1.43 1.74 0.73 1.74
0.96 0.78 1.23 0.79 0.79 0.96 0.40 0.96
0.817 1.79 2.18 2.66 3.49 6.03 5.66 8.57
2BC 4CC 2CE 3FB 3FC 2GB
103.5 105 105 109 109 113 113 113
101 105 104 110 108 118 118 114
121.5 136.5 136.5 158 158 186 186 186
117 130 131 149 145 172 172 154
125.5 140 139 159 161 186 186 187
4 6 7 5 5 5 5 6
5 8 6.5 7.5 8.5 11.5 11.5 17.5
1.5 2 2 2.5 2.5 3 3 3
1.5 1.5 1.5 2 2 2.5 2.5 2.5
23.5 31.5 28.5 34 39 40 40 62.5
0.36 0.44 0.28 0.42 0.42 0.35 0.35 0.83
1.68 1.36 2.16 1.43 1.43 1.74 1.73 0.73
0.92 0.75 1.19 0.79 0.79 0.96 0.95 0.40
0.851 1.83 2.27 3.07 4.3 6.98 6.58 6.47
7GB
91
Da
Axial load factors
Note: When selecting bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-147
●Tapered Roller Bearings Metric system sizes T r1
C
B D
d 95∼120mm Boundary dimensions dynamic mm d
D
T
B
Basic load ratings static dynamic kN
C
rs min
1
1
r ls min
1 Minimal allowable dimension for chamfer dimension r or r1. 2 ThIS bearing does not incorporate the subunit dimensions.
Cr
Limiting speeds static
kgf Cor
B-148
Cr
rpm Cor
grease
oil
Bearing numbers
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Da max
Db
Sa
Sb
ras
r1as
min
min
min
min
max
max
a
Axial load factors
Mass kg
e
Y2
Yo
(approx.)
2GD
113
113
186
166
186
5
16.5
3
2.5
49
0.35
1.74
0.96
10.1
2CC
108.5 108.5 114 110 110 114 114 118 118 118 118
107.5 107.5 109 109 108 116 114 127 127 121 121
131.5 131.5 131 141.5 141.5 168 168 201 201 201 201
127.5 127.5 130 134 135 157 154 184 184 168 177
135.5 135.5 140 144 143 168 171 200 200 202 200
4 4 4 6 7 5 5 5 5 7 5
5 5 6.5 8 6.5 8 10 12.5 12.5 21.5 17.5
1.5 1.5 2.5 2 2 2.5 2.5 3 3 3 3
1.5 1.5 2.5 1.5 1.5 2 2 2.5 2.5 2.5 2.5
24.5 25 30 32.5 29.5 36 41.5 41.5 42 69 53
0.33 0.35 0.47 0.46 0.29 0.42 0.42 0.35 0.35 0.83 0.35
1.82 1.73 1.27 1.31 2.09 1.43 1.43 1.74 1.73 0.73 1.74
1.00 0.95 0.70 0.72 1.15 0.79 0.79 0.96 0.95 0.40 0.96
1.14 1.08 1.15 1.91 2.37 3.78 5.12 8.56 7.72 8.67 12.7
113.5 117 117 119 119 123 123 123 123
113.5 116 116 122 119 132 132 126 128
136.5 150 150 178 178 211 211 211 211
131.5 143 145 165 161 193 193 176 185
140.5 154 153 178 180 209 209 211 209
5 6 7 6 6 6 6 7 6
5 9 9 9 10 12.5 12.5 22 18.5
1.5 2 2 2.5 2.5 3 3 3 3
1.5 2 2 2 2 2.5 2.5 2.5 2.5
25 34.5 31 38 44 43.5 43.5 71.5 55
0.34 0.44 0.28 0.42 0.42 0.35 0.35 0.83 0.35
1.76 1.35 2.12 1.43 1.43 1.74 1.73 0.73 1.74
0.97 0.74 1.17 0.79 0.79 0.96 0.95 0.40 0.96
1.20 2.42 3.00 4.39 6.25 9.79 8.93 9.68 14.5
118.5 122 122 124 124 128 128 128 128 128
117.5 122 121 129 126 141 141 135 135 135
141.5 160 160 188 188 226 226 226 226 226
137 152 152 174 170 206 206 188 198 198
145.5 163 161 188 190 222 222 224 222 222
5 7 7 6 6 6 6 7 6 6.5
5 9 10 9 10 12.5 12.5 25 19.5 19.5
1.5 2 2 2.5 2.5 3 3 3 3 3
1.5 2 2 2 2 2.5 2.5 2.5 2.5 2.5
26.5 36.5 33.5 40 47 45.5 44 76 57.5 56
0.36 0.43 0.29 0.42 0.42 0.35 0.35 0.83 0.35 0.35
1.69 1.39 2.09 1.43 1.43 1.74 1.73 0.73 1.74 1.73
0.93 0.77 1.15 0.79 0.79 0.96 0.95 0.40 0.96 0.95
1.23 3.07 3.80 5.18 7.43 11.4 10.5 11.9 18.0 16.9
128.5 128.5 132 134
128.5 130.5 131 140
156.5 156.5 170 203
150 147.5 161 187
160 159.5 173 203
6 6 7 6
6 6 9 9.5
1.5 1.5 2 2.5
1.5 1.5 2 2
29.5 31 39 44
0.35 0.37 0.46 0.44
1.72 1.60 1.31 1.38
0.95 0.88 0.72 0.76
1.77 1.63 3.25 6.23
4CB 4CC 2CE 3FB 3FC 2GB 7GB 2GD
4DC 2DE 3FB 3FC 2GB 7GB 2GD
4DC 2DE 3FB 3FC 2GB 7GB 2GD
2CC 4DC 4FB
Note: When selecting bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-149
●Tapered Roller Bearings Metric system sizes T r1
C
r B d
D
a
d 120∼170mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
kN 1
kgf
47,000 69,500 57,000 71,000 47,500 56,000 52,500 67,000 83,000 116,000
1,700 1,500 1,500 1,500 1,500
2,200 2,000 2,000 2,000 2,000
350 252 545 505 815 830 780
19,800 14,500 32,500 38,000 54,000 66,000 61,500
36,000 25,700 55,500 51,500 83,000 84,500 79,500
1,800 1,800 1,700 1,500 1,500 1,400 1,400
2,400 ＊32926XU 2 2,400 32926 2,200 32026XU 2,000 30226U 2,000 32226U 1,800 30326U 1,800 31326XU
200 330 420 375 610 735 640 685
375 580 570 485 920 950 780 905
20,400 33,500 43,000 38,000 62,500 75,000 65,000 70,000
38,000 59,500 58,500 49,500 94,000 97,000 80,000 92,500
1,700 1,600 1,400 1,400 1,400 1,300 1,300 1,300
2,200 32928XU 2,100 32028XU 1,900 ＊30228U 2 1,900 30228 1,900 32228U 1,700 ＊30328U 2 1,700 30328 1,700 31328XU
2 2.5 3 3 4 4 4
268 370 450 700 825 680 775
490 655 605 1 070 1 070 875 1,030
27,300 50,000 37,500 67,000 46,000 61,500 71,500 109,000 84,000 109,000 69,500 89,000 79,000 105,000
1,600 1,400 1,300 1,300 1,200 1,200 1,200
2,100 32930XU 1,900 32030XU 1,700 30230U 1,700 32230U 1,600 ＊30330U 2 1,600 30330 1,600 31330XU
2.5 3 4 4 5 4
2 2.5 3 3 4 4
276 435 525 890 915 755
520 790 720 1,420 1,200 975
28,200 53,000 44,500 80,500 53,500 73,500 90,500 145,000 93,500 122,000 77,000 99,500
1,500 1,400 1,200 1,200 1,100 1,100
1,900 32932XU 1,800 32032XU 1,600 30232U 1,600 32232U 1,500 ＊30332U 2 1,500 30332
2.5
2
286
560
29,200
1,400
1,800
3 4 3 4 4
2.5 3 3 3 3
460 560 465 515 815
680 695 550 655 1,130
25 26 34 34 54 49 44
2 2 2.5 4 4 5 5
1.5 2 2 3 3 4 4
194 142 320 375 530 650 600
32 45 42 42 68 62 62 70
25 34 36 36 58 53 53 47
2 2.5 4 3 4 5 4 5
1.5 2 3 3 3 4 4 4
38 48 49 77 72 72 82
38 48 45 73 65 65 75
30 36 38 60 55 55 50
2.5 3 4 4 5 4 5
220 240 290 290 340 340
38 51 52 84 75 75
38 51 48 80 68 68
30 38 40 67 58 58
230
38
38
30
B
C
120
215 260 260 260 260
61.5 59.5 59.5 68 90.5
58 55 55 62 86
50 46 46 42 69
130
180 180 200 230 230 280 280
32 32 45 43.75 67.75 63.75 72
32 30 45 40 64 58 66
140
190 210 250 250 250 300 300 300
32 45 45.75 45.75 71.75 67.75 67.75 77
150
210 225 270 270 320 320 320
160
rpm oil
Cr
T
Bearing numbers
grease
r ls min
D
170
1
Limiting speeds static
rs min
1 Minimal allowable dimension for chamfer dimension r or r1. 2 This bearing does not incorporate the subunit dimensions.
Cor
B-150
Cr
Cor
57,000
32224U 30324U 2 30324 31324XU 32324U
32934XU
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
4FD 2GB
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Da max
Axial load factors
Mass kg
Db
Sa
Sb
ras
r1as
min
min
min
min
max
max
a
e
Y2
Yo
(approx.)
134 138 138 138 138
136 152 152 145 145
203 246 246 246 246
181 221 221 203 213
204 239 239 244 239
6 6 6 9 6
11.5 13.5 13.5 26 21.5
2.5 3 3 3 3
2 2.5 2.5 2.5 2.5
51.5 49 48.5 82.5 61.5
0.44 0.35 0.35 0.83 0.35
1.38 1.74 1.73 0.73 1.74
0.76 0.96 0.95 0.40 0.96
9.08 14.2 13.2 15.4 22.4
140 140 142 148 148 152 152
139 139 144 152 146 164 152
171.5 170 190 216 216 262 262
163.5 163.5 178 203 193 239 218
174 174 192 218 219 255 261
6 6 8 7 7 8 9
7 6 11 9.5 13.5 14.5 28
2 2 2 3 3 4 4
1.5 2 2 2.5 2.5 3 3
31.5 34 43.5 45.5 57 53.5 87.5
0.34 0.37 0.43 0.44 0.44 0.35 0.83
1.77 1.60 1.38 1.38 1.38 1.74 0.73
0.97 0.88 0.76 0.76 0.76 0.96 0.40
2.36 2.22 4.96 7.25 11.2 17.4 19
150 152 158 158 158 162 162 162
150 153 163 163 158 179 179 165
181.5 200 236 236 236 282 282 282
177 187 219 219 210 251 252 234
184 202 237 237 238 273 273 280
6 8 7 7 9 9 9 9
6 11 9.5 9.5 13.5 14.5 14.5 30
2 2 3 2.5 3 4 4 4
1.5 2 2.5 2.5 2.5 3 3 3
34 46 48.5 47.5 61 56.5 57 94
0.36 0.46 0.44 0.43 0.44 0.35 0.35 0.83
1.67 1.31 1.38 1.39 1.38 1.74 1.73 0.73
0.92 0.72 0.76 0.77 0.76 0.96 0.95 0.40
2.51 5.28 9.26 8.37 14.1 21.2 20.4 23
2DC 4EC 4GB 4GD 2GB
162 164 168 168 172 172 172
162 164 175 170 193 193 176
200 213 256 256 302 302 302
192 200 234 226 269 269 250
202 216 255 254 292 292 302
7 8 7 8 8 8 9
8 12 11 17 17 17 32
2 2.5 3 3 4 4 4
2 2 2.5 2.5 3 3 3
36.5 49.5 51.5 64.5 61 62.5 100.5
0.33 0.46 0.44 0.44 0.35 0.37 0.83
1.83 1.31 1.38 1.38 1.74 1.60 0.73
1.01 0.72 0.76 0.76 0.96 0.88 0.40
3.92 6.37 11.2 18.2 25.5 24.7 27.7
2DC 4EC 4GB 4GD 2GB
172 174 178 178 182 182
170.5 175 189 182 205 205
210 228 276 276 322 322
199 213 252 242 286 286
213.5 231 272 275 310 311
7 8 8 10 10 10
8 13 12 17 17 17
2 2.5 3 3 4 4
2 2 2.5 2.5 3 3
38.5 52.5 55.5 70 64 65.5
0.35 0.46 0.44 0.44 0.35 0.37
1.73 1.31 1.38 1.38 1.74 1.60
0.95 0.72 0.76 0.76 0.96 0.88
4.15 7.8 12.9 23.5 29.9 29.2
3DC
182
183
220
213
222
7
8
2
2
42.5
0.38
1.57
0.86
4.4
7GB 2GD 2CC 4EC 4FB 4FD 2GB 7GB 2CC 4DC 4FB 4FD 2GB 7GB
Note: When selecting bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-151
●Tapered Roller Bearings Metric system sizes T r1
C
r B d
D
a
d 170∼300mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN
B
C
rs min
1
1
r ls min
Cr
Limiting speeds static
kgf Cor
Cr
Bearing numbers
rpm Cor
grease
oil
170
260 310 310 360 360
57 57 91 80 80
57 52 86 72 72
43 43 71 62 62
3 5 5 5 4
2.5 4 4 4 4
500 610 1,000 1,010 845
895 845 1,600 1,320 1,100
51,000 91,000 62,000 86,500 102,000 163,000 103,000 135,000 86,000 113,000
1,300 1,100 1,100 1,000 1,000
1,700 32034XU 1,500 30234U 1,500 32234U 1,400 ＊30334U 2 1,400 30334
180
250 280 320 320
45 64 57 91
45 64 52 86
34 48 43 71
2.5 3 5 5
2 2.5 4 4
350 645 630 1,030
700 1,170 890 1,690
36,000 71,500 66,000 119,000 64,000 91,000 105,000 172,000
1,300 1,200 1,100 1,100
1,700 1,600 1,400 1,400
190
260 260 290 340 340 340
45 45 64 60 97 97
45 42 64 55 92 92
34 36 48 46 75 75
2.5 2.5 3 5 5 4
2 2.5 2.5 4 4 4
355 280 655 715 1,150 1,000
710 525 1,210 1,000 1,850 1,670
36,000 28,600 67,000 73,000 117,000 102,000
72,000 53,500 124,000 102,000 189,000 171,000
1,200 1,200 1,100 1,000 1,000 1,000
1,600 ＊32938XU 2 1,600 32938 1,500 32038XUE1 1,300 30238U 1,300 ＊32238U 2 1,300 32238
200
280 310 360 360 360
51 70 64 104 104
51 70 58 98 98
39 53 48 82 82
3 3 5 5 4
2.5 2.5 4 4 4
485 800 785 1,320 1,150
895 1,470 1,110 2,130 1,970
49,000 81,500 80,000 134,000 118,000
91,000 149,000 113,000 217,000 201,000
1,100 1,100 950 950 950
1,500 32940XUE1 1,400 32040XUE1 1,300 30240U 1,300 ＊32240U 2 1,300 32240
220
300 300 340
51 51 76
51 48 76
39 41 57
3 2.5 4
2.5 2.5 3
480 345 920
950 670 1,690
49,000 97,000 35,500 68,500 94,000 173,000
1,000 1,000 960
1,400 ＊32944XUE1 2 1,400 32944E1 1,300 32044XU
240
320 360
51 76
51 76
39 57
3 4
2.5 3
490 930
1,000 1,760
50,000 102,000 95,000 179,000
940 870
1,200 1,200
32948XUE1 32048XU
260
360 400
63.5 87
63.5 87
48 65
3 5
2.5 4
705 1,200
1,430 2,270
72,000 146,000 123,000 231,000
860 800
1,100 1,100
32952XUE1 32052XU
280
380 420
63.5 87
63.5 87
48 65
3 5
2.5 4
725 1,220
1,520 2,350
74,000 155,000 125,000 240,000
790 740
1,100 980
32956XUE1 32056XU
300
420 460
57 74
4 5
3 4
1,010 1,490
2,090 2,830
103,000 213,000 152,000 289,000
720 680
970 910
32960XUE1 32060XU
76 100
76 100
1 Minimal allowable dimension for chamfer dimension r or r1. 2 This bearing does not incorporate the subunit dimensions.
B-152
32936XU 32036XUE1 30236U 32236U
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Da max
Db
Sa
Sb
ras
r1as
min
min
min
min
max
max
Axial load factors
Mass kg
a
e
Y2
Yo
(approx.)
4EC 4GB 4GD 2GB
184 192 192 192 192
187 203 201 221 215.5
248 292 292 342 342
230 266 258 303 297
249 288 293 329 327
10 8 10 10 10
14 14 20 18 18
2.5 4 4 4 4
2 3 3 3 3
56 60.5 75 68 69.5
0.44 0.44 0.44 0.35 0.37
1.35 1.38 1.38 1.74 1.60
0.74 0.76 0.76 0.96 0.88
10.5 17 28.7 35.3 34.8
4DC 3FD 4GB 4GD
192 194 202 202
193 197.5 211 204
240 268 302 302
225 243 274 267
241 269 297 305
8 10 9 10
11 16 14 20
2 2.5 4 4
2 2 3 3
54 59.5 63 77.5
0.48 0.42 0.45 0.45
1.25 1.42 1.33 1.33
0.69 0.78 0.73 0.73
6.54 14.5 17.7 30.7
4DC
202 202 204 212 212 212
204 204 209 228 216 216
250 248 278 322 322 322
235 235 257 295 282 286
251 251 279 316 323 323
8 8 10 9 11 11
11 9 16 14 22 22
2 2 2.5 4 4 4
2 2 2 3 3 3
55 48.5 62.5 64 82 87.5
0.48 0.37 0.44 0.44 0.44 0.49
1.26 1.60 1.36 1.38 1.38 1.23
0.69 0.88 0.75 0.76 0.76 0.68
6.77 6.43 15.1 20.8 36.1 33.3
3EC 4FD 4GB 3GD
214 214 222 222 222
214 221 242 230 230
268 298 342 342 342
254 273 311 298 302
271 297 336 340 344
9 11 10 11 11
12 17 16 22 22
2.5 2.5 4 4 4
2 2 3 3 3
53.5 66.5 70 85 91.5
0.39 0.43 0.44 0.41 0.49
1.52 1.39 1.38 1.48 1.23
0.84 0.77 0.76 0.81 0.68
8.88 19.3 25.4 43.6 43.6
3EC 4FD
234 234 238
234 235 243
288 288 326
271 274 300
290 290 326
10 10 12
12 10 19
2.5 2.5 3
2 2 2.5
59.5 57 72.5
0.43 0.39 0.43
1.41 1.55 1.39
0.78 0.85 0.77
10.2 9.63 25
4EC 4FD
254 258
254 261
308 346
290 318
311 346
10 12
12 19
2.5 3
2 2.5
65.5 78
0.46 0.46
1.31 1.31
0.72 0.72
10.9 26.8
3EC 4FC
274 282
279 287
348 382
325 352
347 383
11 14
15 22
2.5 4
2 3
69.5 85.5
0.41 0.43
1.48 1.38
0.81 0.76
18.8 39.4
4EC 4FC
294 302
298 305
368 402
344 370
368 402
11 14
15 22
2.5 4
2 3
75 90.5
0.43 0.46
1.39 1.31
0.76 0.72
20 41.8
3FD 4GD
318 322
324 329
406 442
379 404
405 439
13 15
19 26
3 4
2.5 3
80 98
0.39 0.43
1.52 1.38
0.84 0.76
31.4 59.6
4FD 4GB 4GD
Note: When selecting bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-153
●Tapered Roller Bearings Metric system sizes T r1
C
B D
d 320∼360mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
B
kN C
rs min
1
1
r ls min
1 Minimal allowable dimension for chamfer dimension r or r1. 2 This bearing does not incorporate the subunit dimensions.
Cr
Limiting speeds static
kgf Cor
B-154
Cr
rpm Cor
grease
oil
Bearing numbers
●Tapered Roller Bearings
Sb
Sa
r 1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr For values of e, Y2 and Yo see the table below.
Dimensions series to ISO
3FD
Abutment and fillet dimensions
Load Constant center mm
mm da
db
min
max
Da max
min
Db
Sa
Sb
ras
r1as
min
min
min
max
max
a
85 85 104
Axial load factors
Mass kg
e
Y2
Yo
0.42 0.39 0.46
1.44 1.55 1.31
0.79 0.85 0.72
33.1 31.7 60.2
(approx.)
338 338 342
344 344 344.5
426 426 462
398 398 418.5
426 425 463
13 13 15
19 13 26
3 3 4
2.5 2.5 3
4FD
358 358
362 362
446 446
417 414
446 445.5
13 13
19 13
3 3
2.5 2.5
90.5 87
0.44 0.39
1.37 1.55
0.75 0.85
34.9 36.0
4FD
378
381
466
436
466
13
19
3
2.5
96.5
0.46
1.31
0.72
36.6
4GD
Note: When selecting bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-155
●Tapered Roller Bearings Inch system sizes T r1
C
r B d
D
a
d 12.700∼22.225mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Limiting speeds static kgf
rpm
Cr
Cor
Cr
Cor
grease
oil
12.700
34.988
10.998
10.988
8.730
12.3
11.6
1,260
1,180
12,000
16,000
14.989
34.988
10.998
10.988
8.730
12.3
11.6
1,260
1,180
12,000
16,000
15.875
41.275 42.862 42.862 47.000 49.225
14.288 14.288 16.670 14.381 19.845
14.681 14.288 16.670 14.381 21.539
11.112 9.525 13.495 11.112 14.288
20.3 17.6 26.7 24.0 38.5
18.7 17.5 26.0 24.2 39.0
2,070 1,800 2,720 2,440 3,900
1,910 1,790 2,650 2,460 3,950
10,000 8,700 9,800 8,600 8,500
13,000 12,000 13,000 11,000 11,000
16.993
47.000
14.381
14.381
11.112
24.0
24.2
2,440
2,460
8,600
11,000
17.462
39.878
13.843
14.605
10.668
23.8
24.2
2,420
2,470
10,000
13,000
19.050
39.992 45.237 47.000 49.225 49.225 49.225 53.975 56.896
12.014 15.494 14.381 18.034 19.845 21.209 22.225 19.368
11.153 16.637 14.381 19.050 21.539 19.050 21.839 19.837
9.525 12.065 11.112 14.288 14.288 17.462 15.875 15.875
12.8 28.3 24.0 38.5 38.5 38.5 40.0 42.5
12.8 28.6 24.2 39.0 39.0 39.0 39.0 46.5
1,310 2,880 2,440 3,900 3,900 3,900 4,100 4,350
1,300 2,920 2,460 3,950 3,950 3,950 3,950 4,750
10,000 8,900 8,600 8,500 8,500 8,500 8,000 7,200
13,000 12,000 11,000 11,000 11,000 11,000 11,000 9,600
19.987
47.000
14.381
14.381
11.112
24.0
24.2
2,440
2,460
8,600
11,000
20.000
50.005
13.495
14.260
9.525
26.0
27.9
2,650
2,850
7,500
10,000
20.625
49.225
19.845
21.539
14.288
38.5
39.0
3,900
3,950
8,500
11,000
20.638
49.225
19.845
19.845
15.875
37.5
39.0
3,800
3,950
8,200
11,000
21.430
50.005
17.526
18.288
13.970
38.0
39.0
3,850
3,950
8,000
11,000
21.986
45.974
15.494
16.637
12.065
29.6
34.0
3,000
3,450
8,400
11,000
22.225
50.005 50.005 52.388 53.975
13.495 17.526 19.368 19.368
14.260 18.288 20.168 20.168
9.525 13.970 14.288 14.288
26.0 38.0 40.5 40.5
27.9 39.0 43.0 43.0
2,650 3,850 4,150 4,150
2,850 3,950 4,350 4,350
7,500 8,000 7,600 7,600
10,000 11,000 10,000 10,000
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision class types, Class 4 and 2. B-156
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
da
db
Da
Db
max
max
a
4T-A4050/A4138
18.5
17
29
32
1.3
1.3
4T-A4059†/A4138
19.5
19
29
32
0.8
4T-03062/03162 4T-11590/11520 4T-17580/17520 4T-05062/05185 4T-09062/09195
21.5 24.5 23 23.5 22
20 22.5 21 21 21.5
34 34.5 36.5 40.5 42
37.5 39.5 39 42.5 44.5
4T-05066/05185
24.5
22
40.5
4T-LM11749/LM11710
23
21.5
4T-A6075/A6157 4T-LM11949/LM11910 4T-05075/05185 4T-09067/09195 4T-09078/09195 4T-09067/09196 4T-21075/21212†† 4T-1775/1729
24 28 25 25.5 25.5 25.5 31.5 27
4T-05079†/05185
Mass kg
e
Y2
Yo
(approx.)
2.5
0.45
1.32
0.73
0.053
1.3
2.5
0.45
1.32
0.73
0.049
1.3 1.5 1.5 1.5 0.8
2 1.5 1.5 1.3 1.3
5.4 1.2 5.8 4.2 9.4
0.31 0.70 0.33 0.36 0.27
1.93 0.85 1.81 1.68 2.26
1.06 0.47 1.00 0.92 1.24
0.092 0.103 0.122 0.131 0.203
42.5
1.5
1.3
4.2
0.36
1.68
0.92
0.127
34
37
1.3
1.3
5.3
0.29
2.10
1.15
0.084
23 23.5 23.5 24 24 24 26 25
34 39.5 40.5 42 42 41.5 43 49
37 41.5 42.5 44.5 44.5 44.5 50 51
1 1.3 1.3 1.3 1.3 1.3 1.5 1.5
1.3 1.3 1.3 1.3 1.3 1.5 2.3 1.3
1.5 5.6 4.2 7.6 9.4 7.6 5.6 6.5
0.53 0.30 0.36 0.27 0.27 0.27 0.59 0.31
1.14 2.00 1.68 2.26 2.26 2.26 1.02 1.95
0.63 1.10 0.92 1.24 1.24 1.24 0.56 1.07
0.065 0.122 0.121 0.179 0.188 0.198 0.248 0.272
26.5
24
40.5
42.5
1.5
1.3
4.2
0.36
1.68
0.92
0.117
4T-07079/07196
27.5
26
44.5
47
1.5
1
3.0
0.40
1.49
0.82
0.138
4T-09081/09195
27.5
25.5
42
44.5
1.5
1.3
9.4
0.27
2.26
1.24
0.179
4T-12580/12520
28.5
26
42.5
45.5
1.5
1.5
7.1
0.32
1.86
1.02
0.182
4T-M12649/M12610
29
25.5
44
46
1.3
1.3
6.4
0.28
2.16
1.19
0.169
4T-LM12749†/LM12711††
27.5
26
40
42.5
1.3
1.3
5.4
0.31
1.96
1.08
0.123
4T-07087/07196 4T-M12648/M12610 4T-1380/1328 4T-1380/1329††
28.5 28.5 29.5 29.5
27 26.5 27 27
44.5 44 45 46
47 46 48.5 49
1.3 1.3 1.5 1.5
1 1.3 1.5 1.5
3.0 6.4 7.4 7.4
0.40 0.28 0.29 0.29
1.49 2.16 2.05 2.05
0.82 1.19 1.13 1.13
0.13 0.165 0.2 0.215
備考3．ET円すいころ軸受も製作しております。NTNにご照会ください。
B-157
●Tapered Roller Bearings Inch system sizes T r1
C
r B d
D
a
d 22.225∼28.575mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN
Limiting speeds static kgf
rpm
B
C
Cr
Cor
Cr
Cor
grease
oil
22.225
56.896 57.150
19.368 22.225
19.837 22.225
15.875 17.462
42.5 47.0
46.5 49.5
4,350 4,800
4,750 5,050
7,200 7,100
9,600 9,500
22.606
47.000
15.500
15.500
12.000
27.5
32.5
2,800
3,300
8,200
11,000
23.812
50.005 50.292 56.896
13.495 14.224 19.368
14.260 14.732 19.837
9.525 10.668 15.875
26.0 28.8 42.5
27.9 34.0 46.5
2,650 2,940 4,350
2,850 3,450 4,750
7,500 7,400 7,200
10,000 9,900 9,600
24.981
50.005
13.495
14.260
9.525
26.0
27.9
2,650
2,850
7,500
10,000
25.000
50.005
13.495
14.260
9.525
26.0
27.9
2,650
2,850
7,500
10,000
25.159
50.005
13.495
14.260
9.525
26.0
27.9
2,650
2,850
7,500
10,000
25.400
50.005 50.005 50.292 51.994 56.896 57.150 61.912 62.000 62.000 64.292 65.088 66.421
13.495 13.495 14.224 15.011 19.368 19.431 19.050 19.050 19.050 21.433 22.225 23.812
14.260 14.260 14.732 14.260 19.837 19.431 20.638 20.638 20.638 21.433 21.463 25.433
9.525 9.525 10.668 12.700 15.875 14.732 14.288 14.288 14.288 16.670 15.875 19.050
26.0 26.0 28.8 26.0 42.5 42.0 46.5 46.5 46.5 51.5 47.0 64.5
27.9 27.9 34.0 27.9 46.5 48.5 54.0 54.0 54.0 64.5 50.5 72.5
2,650 2,650 2,940 2,650 4,350 4,300 4,750 4,750 4,750 5,250 4,800 6,550
2,850 2,850 3,450 2,850 4,750 4,950 5,500 5,500 5,500 6,600 5,150 7,400
7,500 7,500 7,400 7,500 7,200 6,900 6,100 6,100 6,100 6,100 5,700 6,200
10,000 10,000 9,900 10,000 9,600 9,200 8,200 8,200 8,200 8,100 7,600 8,200
26.157
62.000
19.050
20.638
14.288
46.5
54.0
4,750
5,500
6,100
8,200
26.162
66.421
23.812
25.433
19.050
64.5
72.5
6,550
7,400
6,200
8,200
26.988
50.292 60.325 62.000 66.421
14.224 19.842 19.050 23.812
14.732 17.462 20.638 25.433
10.668 15.875 14.288 19.050
28.8 39.5 46.5 64.5
34.0 45.5 54.0 72.5
2,940 4,050 4,750 6,550
3,450 4,650 5,500 7,400
7,400 6,700 6,100 6,200
9,900 8,900 8,200 8,200
28.575
56.896 57.150
19.845 17.462
19.355 17.462
15.875 13.495
40.5 39.5
44.5 45.5
4,150 4,050
4,550 4,650
6,700 6,700
8,900 8,900
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring), this value applies only to high precision class types, Class 4 and 2.
B-158
●Tapered Roller Bearings
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
da
db
Da
Db
max
max
a
4T-1755/1729 4T-1280/1220
29 29.5
27.5 29
49 49
51 52
1.3 0.8
1.3 1.5
4T-LM72849/LM72810
30
28
40.5
44
1.5
4T-07093/07196 4T-L44640/L44610 4T-1779/1729
30.5 30.5 29.5
28.5 28.5 28.5
44.5 44.5 49
47 47 51
4T-07098/07196
31
29
44.5
4T-07097/07196
31
29
4T-07096/07196
31.5
4T-07100/07196 4T-07100S/07196 4T-L44643/L44610 4T-07100/07204 4T-1780/1729 4T-M84548/M84510 4T-15101/15243 4T-15100/15245 4T-15102/15245 4T-M86643/M86610 4T-23100/23256 4T-2687/2631
Mass kg
e
Y2
Yo
(approx.)
6.5 7.1
0.31 0.35
1.95 1.73
1.07 0.95
0.256 0.286
1
3.0
0.47
1.27
0.70
0.125
1.5 1.5 0.8
1 1.3 1.3
3.0 3.4 6.5
0.40 0.37 0.31
1.49 1.60 1.95
0.82 0.88 1.07
0.123 0.137 0.247
47
1.5
1
3.0
0.40
1.49
0.82
0.118
44.5
47
1.5
1
3.0
0.40
1.49
0.82
0.118
29.5
44.5
47
1.5
1
3.0
0.40
1.49
0.82
0.117
30.5 31.5 31.5 30.5 30.5 36 32.5 38 34 38 39 33.5
29.5 29.5 29.5 29.5 30 33 31.5 31.5 31.5 36.5 34.5 31.5
44.5 44.5 44.5 45 49 48.5 54 55 55 54 53 58
47 47 47 48 51 54 58 58 58 61 63 60
1 1.5 1.3 1 0.8 1.5 0.8 3.5 1.5 1.5 1.5 1.3
1 1 1.3 1.3 1.3 1.5 2 1.3 1.3 1.5 1.5 1.3
3.0 3.0 3.4 3.0 6.5 3.4 6.0 6.0 6.0 3.3 2.0 9.3
0.40 0.40 0.37 0.40 0.31 0.55 0.35 0.35 0.35 0.55 0.73 0.25
1.49 1.49 1.60 1.49 1.95 1.10 1.71 1.71 1.71 1.10 0.82 2.36
0.82 0.82 0.88 0.82 1.07 0.60 0.94 0.94 0.94 0.60 0.45 1.30
0.117 0.116 0.13 0.144 0.238 0.241 0.3 0.299 0.301 0.371 0.36 0.442
4T-15103/15245
33
32.5
55
58
0.8
1.3
6.0
0.35
1.71
0.94
0.296
4T-2682/2631
34.5
32
58
60
1.5
1.3
9.3
0.25
2.36
1.30
0.436
4T-L44649†/L44610 4T-15580†/15523 4T-15106†/15245 4T-2688†/2631
37.5 38.5 33.5 35
31 32 33 33
44.5 51 55 58
47 54 58 60
3.5 3.5 0.8 1.5
1.3 1.5 1.3 1.3
3.4 5.0 6.0 9.3
0.37 0.35 0.35 0.25
1.60 1.73 1.71 2.36
0.88 0.95 0.94 1.30
0.12 0.26 0.291 0.429
4T-1985/1930 4T-15590/15520
34 39.5
33.5 33.5
51 51
54 53
0.8 3.5
0.8 1.5
6.7 5.0
0.33 0.35
1.82 1.73
1.00 0.95
0.217 0.196
備考3．ET円すいころ軸受も製作しております。NTNにご照会ください。
B-159
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 28.575∼31.750mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN
Limiting speeds static kgf
rpm
B
C
Cr
Cor
Cr
Cor
grease
oil
28.575
58.738 60.325 60.325 62.000 64.292 66.421 68.262 68.262 69.850 72.626 73.025
19.050 19.842 19.845 19.050 21.433 23.812 22.225 22.225 23.812 24.608 22.225
19.355 17.462 19.355 20.638 21.433 25.433 22.225 23.812 25.357 24.257 22.225
15.080 15.875 15.875 14.288 16.670 19.050 17.462 17.462 19.050 17.462 17.462
40.5 39.5 40.5 46.5 51.5 64.5 57.0 57.5 69.0 58.0 56.5
44.5 45.5 44.5 54.0 64.5 72.5 67.0 65.5 81.5 55.5 68.0
4,150 4,050 4,150 4,750 5,250 6,550 5,800 5,850 7,050 5,900 5,750
4,550 4,650 4,550 5,500 6,600 7,400 6,850 6,700 8,300 5,700 6,900
6,700 6,700 6,700 6,100 6,100 6,200 5,800 5,700 5,700 5,800 5,300
8,900 8,900 8,900 8,200 8,100 8,200 7,700 7,700 7,600 7,700 7,000
29.000
50.292
14.224
14.732
10.668
28.0
35.5
2,860
3,600
7,200
9,600
29.367
66.421
23.812
25.433
19.050
64.5
72.5
6,550
7,400
6,200
8,200
29.987
62.000 62.000
16.002 19.050
16.566 20.638
14.288 14.288
39.0 46.5
42.0 54.0
3,950 4,750
4,300 5,500
6,300 6,100
8,400 8,200
30.000
69.012 72.000
19.845 29.370
19.583 27.783
15.875 23.020
48.5 72.0
58.0 97.0
4,900 7,350
5,900 9,850
5,600 5,400
7,400 7,100
30.112
62.000
19.050
20.638
14.288
46.5
54.0
4,750
5,500
6,100
8,200
30.162
62.000 64.292 69.850 72.626
16.002 21.433 23.812 30.162
16.566 21.433 25.357 29.997
14.288 16.670 19.050 23.812
39.0 51.5 69.0 84.5
42.0 64.5 81.5 98.0
3,950 5,250 7,050 8,600
4,300 6,600 8,300 9,950
6,300 6,100 5,700 5,500
8,400 8,100 7,600 7,300
30.213
62.000 62.000 62.000
19.050 19.050 19.050
20.638 20.638 20.638
14.288 14.288 14.288
46.5 46.5 46.5
54.0 54.0 54.0
4,750 4,750 4,750
5,500 5,500 5,500
6,100 6,100 6,100
8,200 8,200 8,200
30.226
69.012 69.012
19.845 19.845
19.583 19.583
15.875 15.875
48.5 48.5
58.0 58.0
4,900 4,900
5,900 5,900
5,600 5,600
7,400 7,400
31.750
59.131 62.000 62.000
15.875 18.161 19.050
16.764 19.050 20.638
11.811 14.288 14.288
34.5 46.5 46.5
41.0 54.0 54.0
3,500 4,750 4,750
4,150 5,500 5,500
6,300 6,100 6,100
8,400 8,200 8,200
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring), this value applies only to high precision class types, Class 4 and 2.
B-160
●Tapered Roller Bearings
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra ＊
Da db
da Db
ras 2.3 ras 5.6 min 3.56
15° min 4.75
Bearing numbers
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
da
db
Da
Db
max
max
a
4T-1985/1932 4T-15590/15523 4T-1985/1931 4T-15112/15245 4T-M86647/M86610 4T-2689/2631 4T-02474/02420 4T-2474/2420 4T-2578/2523 4T-41125/41286 4T-02872/02820
34 39.5 34 40 40 36 36.5 36 39 48 37.5
33.5 33.5 33.5 34 38 34 36 35 35 36.5 37
52 51 52 55 54 58 59 60 61 61 62
54 54 55 58 61 60 63 63 64 68 68
0.8 3.5 0.8 3.5 1.5 1.3 0.8 0.8 2.3 4.8 0.8
1.3 1.5 1.3 1.3 1.5 1.3 1.5 1.5 1.3 1.5 3.3
4T-L45449/L45410
39.5
33
44.5
48
3.5
4T-2690/2631
41
35
58
60
4T-17118†/17244 4T-15117†/15245
37 36.5
34.5 35
54 55
42.5 44.5
39.5 42.5
4T-15116/15245
36
4T-17119/17244 4T-M86649/M86610 4T-2558/2523 4T-3187/3120
Mass kg
e
Y2
Yo
(approx.)
5.9 5.0 5.9 6.0 3.3 9.3 5.2 6.5 9.1 3.7 3.9
0.33 0.35 0.33 0.35 0.55 0.25 0.42 0.34 0.27 0.60 0.45
1.82 1.73 1.82 1.71 1.10 2.36 1.44 1.77 2.19 1.00 1.32
1.00 0.95 1.00 0.94 0.60 1.30 0.79 0.97 1.21 0.55 0.73
0.23 0.25 0.255 0.277 0.348 0.416 0.409 0.41 0.483 0.477 0.48
1.3
3.5
0.37
1.62
0.89
0.113
3.5
1.3
9.3
0.25
2.36
1.30
0.406
57 58
1.5 1.3
1.5 1.3
3.3 6.0
0.38 0.35
1.57 1.71
0.86 0.94
0.228 0.269
60 58
63 69
3.5 1.3
1.3 3.3
4.1 6.0
0.38 0.55
1.57 1.10
0.86 0.60
0.369 0.619
35.5
55
58
0.8
1.3
6.0
0.35
1.71
0.94
0.268
37 41 40 39
34.5 38 36.5 38.5
54 54 61 61
57 61 64 67
1.5 1.5 2.3 0.8
1.5 1.5 1.3 3.3
3.3 3.3 9.1 9.9
0.38 0.55 0.27 0.33
1.57 1.10 2.19 1.80
0.86 0.60 1.21 0.99
0.226 0.336 0.468 0.621
4T-15118/15245 4T-15119/15245 4T-15120/15245
41.5 37.5 36
35.5 35.5 35.5
55 55 55
58 58 58
3.5 1.5 0.8
1.3 1.3 1.3
6.0 6.0 6.0
0.35 0.35 0.35
1.71 1.71 1.71
0.94 0.94 0.94
0.265 0.267 0.267
4T-14116/14274 4T-14116/14276
37 37
36.5 36.5
59 60
63 63
0.8 0.8
3.3 1.3
4.1 4.1
0.38 0.38
1.57 1.57
0.86 0.86
0.366 0.37
4T-LM67048/LM67010 4T-15123/15245 4T-15125/15245
42.5 42.5 42.5
36 36.5 36.5
52 55 55
56 58 58
＊ ＊ 3.5
1.3 1.3 1.3
2.8 5.1 6.0
0.41 0.35 0.35
1.46 1.71 1.71
0.80 0.94 0.94
0.182 0.244 0.253
4T-14117A/14276 ＃4T-JHM88540/JHM88513
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 4. Chamfer dimensions of bearings marked "＊" are shown in drawings.
B-161
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
d 31.750∼34.925mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN
Limiting speeds static kgf
rpm
B
C
Cr
Cor
Cr
Cor
grease
oil
31.750
62.000 66.421 68.262 68.262 69.012 69.012 69.850 69.850 72.626 72.626 73.025 73.025 73.025 73.812 76.200 79.375
19.050 25.400 22.225 22.225 19.845 19.845 23.812 23.812 30.162 30.162 22.225 22.225 29.370 29.370 29.370 29.370
20.638 25.357 22.225 22.225 19.583 19.583 25.357 25.357 29.997 29.997 22.225 23.812 27.783 27.783 28.575 29.771
14.288 20.638 17.462 17.462 15.875 15.875 19.050 19.050 23.812 23.812 17.462 17.462 23.020 23.020 23.020 23.812
46.5 69.0 57.0 57.0 48.5 48.5 69.0 69.0 84.5 84.5 56.5 62.5 72.0 72.0 78.0 93.0
54.0 81.5 67.0 67.0 58.0 58.0 81.5 81.5 98.0 98.0 68.0 75.5 97.0 97.0 105 114
4,750 7,050 5,800 5,800 4,900 4,900 7,050 7,050 8,600 8,600 5,750 6,400 7,350 7,350 7,950 9,450
5,500 8,300 6,850 6,850 5,900 5,900 8,300 8,300 9,950 9,950 6,900 7,700 9,850 9,850 10,700 11,600
6,100 5,700 5,800 5,800 5,600 5,600 5,700 5,700 5,500 5,500 5,300 5,200 5,400 5,400 5,100 4,900
8,200 7,600 7,700 7,700 7,400 7,400 7,600 7,600 7,300 7,300 7,000 7,000 7,100 7,100 6,800 6,600
33.338
68.262 69.012 69.850 72.626 73.025 76.200 76.200 76.200 79.375
22.225 19.845 23.812 30.162 29.370 23.812 29.370 29.370 25.400
22.225 19.583 25.357 29.997 27.783 25.654 28.575 28.575 24.074
17.462 15.875 19.050 23.812 23.020 19.050 23.020 23.020 17.462
56.5 48.5 69.0 84.5 72.0 73.0 78.0 78.0 65.5
71.0 58.0 81.5 98.0 97.0 90.5 105 105 67.0
5,750 4,900 7,050 8,600 7,350 7,450 7,950 7,950 6,650
7,250 5,900 8,300 9,950 9,850 9,200 10,700 10,700 6,800
5,700 5,600 5,700 5,500 5,400 5,100 5,100 5,100 5,200
7,500 7,400 7,600 7,300 7,100 6,800 6,800 6,800 6,900
34.925
65.088 65.088 69.012 72.233 72.238 73.025 73.025 73.025 73.025 73.025 73.025 76.200
18.034 18.034 19.845 25.400 20.638 22.225 22.225 22.225 23.812 23.812 23.812 23.812
18.288 18.288 19.583 25.400 20.638 22.225 22.225 23.812 24.608 24.608 25.654 25.654
13.970 13.970 15.875 19.842 15.875 17.462 17.462 17.462 19.050 19.050 19.050 19.050
46.5 46.5 48.5 65.0 48.0 56.5 56.5 62.5 71.0 71.0 73.0 73.0
56.0 56.0 58.0 84.5 58.5 68.0 68.0 75.5 85.0 85.0 90.5 90.5
4,750 4,750 4,900 6,600 4,900 5,750 5,750 6,400 7,200 7,200 7,450 7,450
5,700 5,700 5,900 8,600 5,950 6,900 6,900 7,700 8,700 8,700 9,200 9,200
5,700 5,700 5,600 5,400 5,300 5,300 5,300 5,200 5,300 5,300 5,100 5,100
7,600 7,600 7,400 7,200 7,000 7,000 7,000 7,000 7,100 7,100 6,800 6,800
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. Chamfer dimensions of bearings marked "＊" are shown in drawings.
B-162
●Tapered Roller Bearings
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra ＊
Da db
da Db
ras 2.3 ras 5.6 min 3.56
15° min 4.75
Bearing numbers
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
da
db
Da
Db
max
max
a
4T-15126/15245 4T-2580/2520 4T-02475/02420 4T-02476/02420 4T-14124/14276 4T-14125A/14276 4T-2580/2523 4T-2582/2523 4T-3188/3120 4T-3193/3120 4T-02875/02820 4T-2879/2820 4T-HM88542/HM88510 4T-HM88542/HM88512 4T-HM89440/HM89410 4T-3476/3420
37 38.5 44.5 39 38.5 44 38.5 44 40 45.5 45.5 39.5 45.5 45.5 45.5 43
36.5 37.5 38.5 38.5 37.5 37.5 37.5 37.5 39.5 39.5 39.5 38.5 42.5 42.5 44.5 41
55 57 59 59 60 60 61 61 61 61 62 63 59 60 62 67
58 62 63 63 63 63 64 64 67 67 68 68 70 70 73 74
0.8 0.8 3.5 0.8 0.8 3.5 0.8 3.5 0.8 3.5 3.5 0.8 1.3 1.3 0.8 1.3
1.3 3.3 1.5 1.5 1.3 1.3 1.3 1.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
4T-M88048/M88010 4T-14130/14276 4T-2585/2523 4T-3196/3120 4T-HM88547/HM88510 4T-2785/2720 4T-HM89443/HM89410 4T-HM89444/HM89410 4T-43131/43312
42.5 45 45 47 45.5 46 46.5 53 51
41 38.5 39 40.5 42.5 40 44.5 44.5 42
58 60 61 61 59 66 62 62 67
65 63 64 67 70 70 73 73 74
0.8 3.5 3.5 3.5 0.8 3.5 0.8 3.8 3.5
4T-LM48548/LM48510 4T-LM48548A/LM48510 4T-14137A/14276 4T-HM88649/HM88610 4T-16137/16284 4T-02877/02820 4T-02878/02820 4T-2878/2820 4T-25877/25820 4T-25877/25821 4T-2793/2735X 4T-2793/2720
46 40.5 42 48.5 47 48.5 42.5 42 43 43 42 42
40 42 40 42.5 40.5 42 42 41 40.5 40.5 41 41
58 58 60 60 63 62 62 63 64 65 66 66
61 61 63 69 67 68 68 68 68 68 69 70
＊ 0.8 1.5 2.3 3.5 3.5 0.8 0.8 1.5 1.5 0.8 0.8
備考3．ET円すいころ軸受も製作しております。NTNにご照会ください。
B-163
Mass kg
e
Y2
Yo
(approx.)
6.0 9.1 5.2 5.2 4.1 4.1 9.1 9.1 9.9 9.9 3.9 5.5 6.0 6.0 5.8 8.7
0.35 0.27 0.42 0.42 0.38 0.38 0.27 0.27 0.33 0.33 0.45 0.37 0.55 0.55 0.55 0.37
1.71 2.19 1.44 1.44 1.57 1.57 2.19 2.19 1.80 1.80 1.32 1.63 1.10 1.10 1.10 1.64
0.94 1.21 0.79 0.79 0.86 0.86 1.21 1.21 0.99 0.99 0.73 0.90 0.60 0.60 0.60 0.90
0.255 0.409 0.38 0.383 0.359 0.356 0.454 0.451 0.603 0.601 0.451 0.465 0.622 0.638 0.686 0.767
1.5 1.3 1.3 3.3 3.3 3.3 3.3 3.3 1.5
2.9 4.1 9.1 9.9 6.0 7.8 5.8 5.8 1.4
0.55 0.38 0.27 0.33 0.55 0.30 0.55 0.55 0.67
1.10 1.57 2.19 1.80 1.10 1.98 1.10 1.10 0.90
0.60 0.86 1.21 0.99 0.60 1.09 0.60 0.60 0.49
0.378 0.344 0.435 0.581 0.604 0.551 0.668 0.665 0.568
1.3 1.3 1.3 2.3 1.3 3.3 3.3 3.3 2.3 0.8 0.8 3.3
3.7 3.7 4.1 4.6 4.2 3.9 3.9 5.5 8.1 8.1 7.8 7.8
0.38 0.38 0.38 0.55 0.40 0.45 0.45 0.37 0.29 0.29 0.30 0.30
1.59 1.59 1.57 1.10 1.49 1.32 1.32 1.63 2.07 2.07 1.98 1.98
0.88 0.88 0.86 0.60 0.82 0.73 0.73 0.90 1.14 1.14 1.09 1.09
0.249 0.252 0.333 0.489 0.385 0.422 0.425 0.434 0.471 0.474 0.485 0.536
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 34.925∼38.100mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
rpm
Cor
Cr
Cor
grease
oil
34.925
76.200 76.200 76.200 76.200 79.375 80.167 85.725
23.812 29.370 29.370 29.370 29.370 29.370 30.162
25.654 28.575 28.575 28.575 29.771 30.391 30.162
19.050 23.020 23.812 23.812 23.812 23.812 23.812
73.0 78.0 80.5 80.5 93.0 95.0 105
90.5 105 97.0 97.0 114 112 132
7,450 7,950 8,200 8,200 9,450 9,700 10,700
9,200 10,700 9,900 9,900 11,600 11,400 13,400
5,100 5,100 5,100 5,100 4,900 4,800 4,500
6,800 6,800 6,800 6,800 6,600 6,400 6,000
34.976
69.012
19.845
19.583
15.875
48.5
58.0
4,900
5,900
5,600
7,400
34.988
59.974 61.973 61.973
15.875 16.700 18.000
16.764 17.000 17.000
11.938 13.600 15.000
35.5 37.0 37.0
47.5 48.0 48.0
3,600 3,800 3,800
4,850 4,900 4,900
6,100 5,900 5,900
8,100 7,900 7,900
35.000
70.000 79.375 80.000
24.000 23.812 21.000
23.500 25.400 22.403
19.000 19.050 17.826
62.0 76.5 68.0
78.0 97.5 75.0
6,350 7,800 6,950
7,950 9,950 7,650
5,500 4,800 4,700
7,300 6,400 6,300
35.717
72.233 72.626
25.400 25.400
25.400 25.400
19.842 19.842
65.0 65.0
84.5 84.5
6,600 6,600
8,600 8,600
5,400 5,400
7,200 7,200
36.487
73.025 76.200
23.812 23.812
24.608 25.654
19.050 19.050
71.0 73.0
85.0 90.5
7,200 7,450
8,700 9,200
5,300 5,100
7,100 6,800
36.512
76.200 76.200 76.200 79.375 79.375 88.500
29.370 29.370 29.370 29.370 29.370 25.400
28.575 28.575 28.575 28.829 29.771 23.698
23.020 23.020 23.812 22.664 23.812 17.462
78.0 78.0 80.5 86.5 93.0 70.5
105 105 97.0 104 114 78.0
7,950 7,950 8,200 8,800 9,450 7,200
10,700 10,700 9,900 10,600 11,600 7,950
5,100 5,100 5,100 5,000 4,900 4,000
6,800 6,800 6,800 6,600 6,600 5,300
38.000
63.000
17.000
17.000
13.500
38.5
52.5
3,950
5,350
5,700
7,600
38.100
63.500 65.088 69.012 69.012 71.438 72.000
12.700 18.034 19.050 19.050 15.875 19.000
11.908 18.288 19.050 19.050 16.520 20.638
9.525 13.970 15.083 15.083 11.908 14.237
25.9 43.5 47.5 47.5 43.5 48.0
33.5 57.0 59.5 59.5 51.0 58.5
2,640 4,400 4,850 4,850 4,400 4,900
3,400 5,800 6,050 6,050 5,200 5,950
5,500 5,500 5,300 5,300 5,400 5,300
7,300 7,400 7,100 7,100 7,200 7,000
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision class types, Class 4 and 2. B-164
●Tapered Roller Bearings
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra ＊
Da db
da Db
ras 2.3 ras 5.6 min 3.56
15° min 4.75
Bearing numbers
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
Mass kg
da
db
Da
Db
max
max
a
e
Y2
Yo
(approx.)
4T-2793/2729 4T-HM89446/HM89410 4T-31593/31520 4T-31594/31520 4T-3478/3420 4T-3379/3320 4T-3872/3820
42 53 50 46 50 48 53
41 44.5 43.5 43.5 43.5 41.5 46
68 62 64 64 67 70 73
70 73 72 72 74 75 81
0.8 3.5 3.5 1.5 3.5 3.5 3.5
0.8 3.3 3.3 3.3 3.3 3.3 3.3
7.8 5.8 7.8 7.8 8.7 11.2 8.1
0.30 0.55 0.40 0.40 0.37 0.27 0.40
1.98 1.10 1.49 1.49 1.64 2.20 1.49
1.09 0.60 0.82 0.82 0.90 1.21 0.82
0.541 0.646 0.625 0.627 0.725 0.732 0.897
4T-14139/14276
41.5
40
60
63
1.3
1.3
4.1
0.38
1.57
0.86
0.333
4T-L68149†/L68111†† 4T-LM78349A†/LM78310A†† 4T-LM78349†/LM78310C††
45.5 42 46
39 39.5 40
53 54 56
56 59 59
＊ 1.5 ＊
1.3 1.5 1.5
2.5 2.4 2.4
0.42 0.44 0.44
1.44 1.35 1.35
0.79 0.74 0.74
0.179 0.209 0.218
47 42.5 42.5
42 42 41.5
60 71 73
67 74 75
2 0.8 0.8
1.5 0.8 1.3
3.6 7.4 6.6
0.55 0.32 0.27
1.10 1.88 2.20
0.60 1.04 1.21
0.42 0.61 0.534
4T-HM88648/HM88610 4T-HM88648/HM88611AS
52 52
43 43
60 59
69 69
3.5 3.5
2.3 3.3
4.6 3.0
0.55 0.55
1.10 1.10
0.60 0.60
0.478 0.482
4T-25880/25821 4T-2780/2720
44 44.5
42 42.5
65 66
68 70
1.5 1.5
0.8 3.3
8.1 7.8
0.29 0.30
2.07 1.98
1.14 1.09
0.457 0.518
4T-HM89448/HM89410 4T-HM89449/HM89411 4T-31597/31520 4T-HM89249/HM89210 4T-3479/3420 4T-44143/44348
48.5 54 51 55 45.5 54
44.5 44.5 44.5 44 44.5 50
62 65 64 66 67 75
73 73 72 75 74 84
0.8 3.5 3.5 3.5 0.8 2.3
3.3 0.8 3.3 3.3 3.3 1.5
5.8 5.8 7.8 5.8 8.7 –2.9
0.55 0.55 0.40 0.55 0.37 0.78
1.10 1.10 1.49 1.10 1.64 0.77
0.60 0.60 0.82 0.60 0.90 0.42
0.629 0.631 0.605 0.686 0.707 0.729
49
42.5
56
60
＊
1.3
2.3
0.42
1.44
0.79
0.198
45 49 49.5 46.5 45 49.5
42.5 42.5 43 43 43 43
59 59 61 61 63 63
60 62 65 65 66 67
1.5 ＊ 3.5 2 1.5 3.5
0.8 1.3 2.3 2.3 1 1.5
0.8 4.3 3.0 3.0 1.4 4.2
0.35 0.33 0.40 0.40 0.44 0.40
1.73 1.80 1.49 1.49 1.35 1.49
0.95 0.99 0.82 0.82 0.74 0.82
0.147 0.233 0.293 0.296 0.273 0.331
＃4T-JS3549A/JS3510 4T-26883/26822 4T-339/332
＃4T-JL69349/JL69310 4T-13889/13830 4T-LM29748/LM29710 4T-13685/13621 4T-13687/13621 4T-19150/19281 4T-16150/16282
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 4. Chamfer dimensions of bearings marked "＊" are shown in drawings.
B-165
●Tapered Roller Bearings Inch system sizes T r1
C
r B d
D
a
d 38.100∼41.275mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
rpm
Cor
Cr
Cor
grease
oil
38.100
76.200 76.200 76.200 79.375 79.375 80.000 80.035 82.550 82.931 85.725 87.312 88.500 88.500
20.638 23.812 23.812 23.812 29.370 21.006 24.608 29.370 23.812 30.162 30.162 25.400 26.988
20.940 25.654 25.654 25.400 29.771 20.940 23.698 28.575 25.400 30.162 30.886 23.698 29.083
15.507 19.050 19.050 19.050 23.812 15.875 18.512 23.020 19.050 23.812 23.812 17.462 22.225
55.5 73.0 73.0 76.5 93.0 55.5 67.0 87.0 76.0 105 94.0 70.5 95.5
63.0 90.5 90.5 97.5 114 63.0 82.5 117 98.0 132 117 78.0 107
5,650 7,450 7,450 7,800 9,450 5,650 6,850 8,850 7,750 10,700 9,600 7,200 9,750
6,450 9,200 9,200 9,950 11,600 6,450 8,400 11,900 10,000 13,400 12,000 7,950 10,900
5,000 5,100 5,100 4,800 4,900 5,000 4,800 4,700 4,500 4,500 4,400 4,000 4,600
6,700 6,800 6,800 6,400 6,600 6,700 6,400 6,200 6,000 6,000 5,900 5,300 6,100
39.688
76.200 77.534 79.375 80.035 80.167 88.500
23.812 29.370 23.812 29.370 29.370 25.400
25.654 30.391 25.400 30.391 30.391 23.698
19.050 23.812 19.050 23.812 23.812 17.462
73.0 95.0 76.5 95.0 95.0 70.5
90.5 112 97.5 112 112 78.0
7,450 9,700 7,800 9,700 9,700 7,200
9,200 11,400 9,950 11,400 11,400 7,950
5,100 4,800 4,800 4,800 4,800 4,000
6,800 6,400 6,400 6,400 6,400 5,300
40.000
76.200 80.000 85.000 88.500 107.950
20.638 21.000 20.638 26.988 36.512
20.940 22.403 21.692 29.083 36.957
15.507 17.826 17.462 22.225 28.575
55.5 68.0 69.5 95.5 141
63.0 75.0 79.5 107 177
5,650 6,950 7,100 9,750 14,400
6,450 7,650 8,100 10,900 18,100
5,000 4,700 4,400 4,600 3,600
6,700 6,300 5,800 6,100 4,800
40.483
82.550
29.370
28.575
23.020
87.0
8,850
11,900
4,700
6,200
40.988
67.975
17.500
18.000
13.500
46.0
62.5
4,700
6,400
5,300
7,000
41.275
73.025 73.431 73.431 76.200 76.200 76.200 79.375 80.000
16.667 19.558 21.430 18.009 22.225 25.400 23.812 18.009
17.462 19.812 19.812 17.384 23.020 25.400 25.400 17.384
12.700 14.732 16.604 14.288 17.462 20.638 19.050 14.288
46.0 56.0 56.0 42.5 65.0 76.5 76.5 42.5
55.5 69.5 69.5 51.5 80.5 97.5 97.5 51.5
4,700 5,700 5,700 4,350 6,600 7,800 7,800 4,350
5,700 7,100 7,100 5,250 8,200 9,950 9,950 5,250
5,000 5,000 5,000 4,900 4,900 4,800 4,800 4,900
6,600 6,600 6,600 6,500 6,500 6,400 6,400 6,500
117
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision class types, Class 4 and 2. B-166
●Tapered Roller Bearings
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e Fr Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra ＊
Da db
da Db
ras 2.3 ras 5.6 min 3.56
15° min 4.75
Bearing numbers
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
da
db
Da
Db
max
max
4T-28150/28300 4T-2776/2720 4T-2788/2720 4T-26878/26822 4T-3490/3420 4T-28150/28315 4T-27880/27820 4T-HM801346/HM801310 4T-25572/25520 4T-3875/3820 4T-3580/3525 4T-44150/44348 4T-418/414
45.5 52 50 45 52 45.5 48 51 46 49.5 48 55 51
43.5 43.5 43.5 44.5 45.5 43.5 47 49 46 48.5 45.5 51 44.5
68 66 66 71 67 69 68 68 74 73 75 75 77
71 70 70 74 74 73 75 78 77 81 81 84 80
1.5 4.3 3.5 0.8 3.5 1.5 0.8 0.8 0.8 0.8 1.5 2.3 3.5
1.3 3.3 3.3 0.8 3.3 1.5 1.5 3.3 0.8 3.3 3.3 1.5 1.5
4T-2789/2720 4T-3382/3321 4T-26880/26822 4T-3382/3339 4T-3386/3320 4T-44158/44348
52 52 48 52 46.5 58
45 45.5 45.5 45.5 45.5 51
66 68 71 71 70 75
70 75 74 75 75 84
3.5 3.5 1.5 3.5 0.8 3.5
4T-28158/28300 4T-344/332 4T-350A/354A 4T-420/414 4T-543/532X
47.5 52 47.5 52 57
45 45.5 46.5 46 50
68 73 77 77 94
71 75 80 80 100
4T-HM801349/HM801310
58
49
68
4T-LM300849†/LM300811††
52
45
4T-18590/18520 4T-LM501349/LM501310 4T-LM501349/LM501314 4T-11162/11300 4T-24780/24720 4T-26882/26823 4T-26885/26822 4T-11162/11315
53 53 53 49 54 54 48 49
46 46.5 46.5 46.5 47 47 47 46.5
kg
e
Y2
Yo
(approx.)
4.8 7.8 7.8 7.4 8.7 4.8 2.5 4.7 6.2 8.1 10.0 –2.91 9.1
0.40 0.30 0.30 0.32 0.37 0.40 0.56 0.55 0.33 0.40 0.31 0.78 0.26
1.49 1.98 1.98 1.88 1.64 1.49 1.07 1.10 1.79 1.49 1.96 0.77 2.28
0.82 1.09 1.09 1.04 0.90 0.82 0.59 0.60 0.99 0.82 1.08 0.42 1.25
0.405 0.495 0.497 0.574 0.683 0.467 0.562 0.767 0.645 0.857 0.881 0.711 0.84
3.3 3.3 0.8 1.5 3.3 1.5
7.8 11.2 7.4 11.2 11.2 –2.91
0.30 0.27 0.32 0.27 0.27 0.78
1.98 2.20 1.88 2.20 2.20 0.77
1.09 1.21 1.04 1.21 1.21 0.42
0.477 0.669 0.554 0.666 0.668 0.691
1.5 3.5 0.8 3.5 3.5
1.3 1.3 1.3 1.5 3.3
4.8 6.6 5.1 9.1 12.3
0.40 0.27 0.31 0.26 0.30
1.49 2.20 1.96 2.28 2.02
0.82 1.21 1.08 1.25 1.11
0.386 0.479 0.562 0.813 1.77
78
3.5
3.3
4.7
0.55
1.10
0.60
0.731
61
65
＊
1.5
3.6
0.35
1.72
0.95
0.239
66 67 66 67 68 69 71 69
69 70 70 71 72 73 74 73
3.5 3.5 3.5 1.5 3.5 3.5 0.8 1.5
1.5 0.8 0.8 1.5 0.8 1.5 0.8 1.5
2.9 3.3 3.3 0.7 4.5 7.4 7.4 0.7
0.35 0.40 0.40 0.49 0.39 0.32 0.32 0.49
1.71 1.50 1.50 1.23 1.53 1.88 1.88 1.23
0.94 0.83 0.83 0.68 0.84 1.04 1.04 0.68
0.281 0.335 0.355 0.337 0.432 0.488 0.535 0.389
Note: 3. Chamfer dimensions of bearings marked "＊" are shown in drawings. 1 "−" means that load center at outside on end of inner ring.
B-167
a
Mass
●Tapered Roller Bearings Inch system sizes T r1
C
r B d
D
a
d 41.275∼44.450mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
rpm
Cor
Cr
Cor
grease
oil
41.275
80.000 80.000 82.550 85.725 87.312 88.900 90.488 92.075 93.662 95.250 95.250 95.250
21.000 23.812 26.543 30.162 30.162 30.162 39.688 26.195 31.750 30.162 30.958 30.958
22.403 25.400 25.654 30.162 30.886 29.370 40.386 23.812 31.750 29.370 28.300 28.575
17.826 19.050 20.193 23.812 23.812 23.020 33.338 16.670 26.195 23.020 20.638 22.225
68.0 76.5 80.5 105 94.0 93.5 136 72.5 104 109 82.5 96.0
75.0 97.5 104 132 117 125 175 81.5 131 147 92.0 116
6,950 7,800 8,200 10,700 9,600 9,550 13,900 7,400 10,600 11,100 8,400 9,800
7,650 9,950 10,600 13,400 12,000 12,700 17,900 8,300 13,400 15,000 9,350 11,800
4,700 4,800 4,600 4,500 4,400 4,300 4,300 3,800 4,100 4,000 3,700 3,700
6,300 6,400 6,100 6,000 5,900 5,800 5,800 5,000 5,500 5,300 5,000 4,900
42.070
90.488
39.688
40.386
33.338
136
175
13,900
17,900
4,300
5,800
42.862
82.550 82.931 87.312
26.195 23.812 30.162
26.988 25.400 30.886
20.638 19.050 23.812
75.5 76.0 94.0
97.0 98.0 117
7,700 7,750 9,600
9,900 10,000 12,000
4,600 4,500 4,400
6,100 6,000 5,900
42.875
79.375 82.931
23.812 23.812
25.400 25.400
19.050 19.050
76.5 76.0
97.5 98.0
7,800 7,750
9,950 10,000
4,800 4,500
6,400 6,000
44.450
76.992 79.375 82.931 82.931 84.138 85.000 87.312 88.900 93.264 93.662 95.250 95.250 95.250 95.250 95.250 101.600 104.775
17.462 17.462 23.812 23.812 30.162 20.638 30.162 30.162 30.162 31.750 27.783 27.783 30.162 30.958 30.958 34.925 30.162
17.145 17.462 25.400 25.400 30.886 21.692 30.886 29.370 30.302 31.750 28.575 29.900 29.370 28.300 28.575 36.068 29.317
11.908 13.495 19.050 19.050 23.812 17.462 23.812 23.020 23.812 26.195 22.225 22.225 23.020 20.638 22.225 26.988 24.605
44.0 45.5 76.0 76.0 94.0 69.5 94.0 93.5 102 103 107 108 109 82.5 96.0 135 115
54.0 56.0 98.0 98.0 117 79.5 117 125 134 131 139 129 147 92.0 116 165 148
4,450 4,600 7,750 7,750 9,600 7,100 9,600 9,550 10,400 10,600 10,900 11,000 11,100 8,400 9,800 13,800 11,700
5,550 5,700 10,000 10,000 12,000 8,100 12,000 12,700 13,700 13,400 14,200 13,200 15,000 9,350 11,800 16,800 15,000
4,700 4,600 4,500 4,500 4,400 4,400 4,400 4,300 4,000 4,100 3,900 4,200 4,000 3,700 3,700 3,800 3,500
6,300 6,200 6,000 6,000 5,900 5,800 5,900 5,800 5,300 5,500 5,200 5,600 5,300 5,000 4,900 5,000 4,700
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value.
B-168
●Tapered Roller Bearings
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra ＊
Da db
da Db
ras 2.3 ras 5.6 min 3.56
15° min 4.75
Bearing numbers
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
da
db
Da
Db
max
max
4T-336/332 4T-26882/26824 4T-M802048/M802011 4T-3880/3820 4T-3576/3525 4T-HM803145/HM803110 4T-4388/4335 4T-M903345/M903310 4T-46162/46368 4T-HM804840/HM804810 4T-53162/53375 4T-HM903245/HM903210
47 54 57 52 49 54 57 60 52 61 57 63
46 47 51 50 48 53 51 54 51 54 53 54
73 70 70 73 75 74 77 78 79 81 81 81
75 74 79 81 81 85 85 88 87 91 89 91
0.8 3.5 3.5 0.8 0.8 0.8 3.5 3.5 0.8 3.5 1.5 3.5
1.3 1.3 3.3 3.3 3.3 3.3 3.3 1.5 3.3 3.3 0.8 0.8
4T-4395/4335
58
51
77
85
3.5
4T-22780/22720 4T-25578/25520 4T-3579/3525
56 53 56
50 49.5 49.5
71 74 75
77 77 81
4T-26884/26822 4T-25577/25520
55 55
48.5 49
71 74
4T-12175/12303 4T-18685/18620 4T-25580/25520 4T-25582/25520 4T-3578/3520 4T-355/354A 4T-3578/3525 4T-HM803149/HM803110 4T-3782/3720 4T-46175/46368 4T-33885/33821 4T-438/432 4T-HM804842/HM804810 4T-53177/53375 4T-HM903249/HM903210 4T-527/522 4T-460/453X
52 54 57 60 57 54 57 62 58 55 53 57 57 63 65 59 60
49.5 49.5 50 50 51 50 51 53 52 54 53 51 57 53 54 53 54
68 71 74 74 74 77 75 74 82 79 85 83 81 81 81 89 92
kg
e
Y2
Yo
(approx.)
6.6 7.4 3.2 8.1 10.0 4.6 15.0 – 3.61 7.1 3.7 0.5 – 0.41
0.27 0.32 0.55 0.40 0.31 0.55 0.28 0.83 0.40 0.55 0.74 0.74
2.20 1.88 1.10 1.49 1.96 1.10 2.11 0.72 1.49 1.10 0.81 0.81
1.21 1.04 0.60 0.82 1.08 0.60 1.16 0.40 0.82 0.60 0.45 0.45
0.468 0.542 0.642 0.81 0.834 0.901 1.25 0.758 1.09 1.08 0.975 1.05
3.3
15.0
0.28
2.11
1.16
1.24
3.5 2.3 3.5
3.3 0.8 3.3
6.4 6.2 10.0
0.40 0.33 0.31
1.49 1.79 1.96
0.82 0.99 1.08
0.617 0.584 0.805
74 77
3.5 3.5
0.8 0.8
7.4 6.2
0.32 0.33
1.88 1.79
1.04 0.99
0.51 0.581
73 74 77 77 80 80 81 85 88 87 90 87 91 89 91 95 98
1.5 2.8 3.5 5 3.5 2.3 3.5 3.5 3.5 0.8 0.8 3.5 0.8 3.5 3.5 3.5 3.5
1.5 1.5 0.8 0.8 3.3 1.3 3.3 3.3 3.3 3.3 2.3 2.3 3.3 0.8 0.8 3.3 3.3
– 0.21 2.2 6.2 6.2 10.0 5.1 10.0 4.6 8.3 7.1 8.0 9.2 3.7 0.5 – 0.41 12.9 7.1
0.51 0.37 0.33 0.33 0.31 0.31 0.31 0.55 0.34 0.40 0.33 0.28 0.55 0.74 0.74 0.29 0.34
1.19 1.60 1.79 1.79 1.96 1.96 1.96 1.10 1.77 1.49 1.82 2.11 1.10 0.81 0.81 2.10 1.79
0.65 0.88 0.99 0.99 1.08 1.08 1.08 0.60 0.97 0.82 1.00 1.16 0.60 0.45 0.45 1.16 0.98
0.308 0.345 0.56 0.556 0.699 0.511 0.779 0.849 0.961 1.04 0.987 0.953 1.04 0.925 1 1.37 1.29
1 "−" means that load center at outside on end of inner ring.
B-169
a
Mass
●Tapered Roller Bearings Inch system sizes T r1
C
r B d
D
a
d 44.450∼47.625mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
44.450
104.775 104.775 111.125 111.125 127.000
30.162 36.512 30.162 30.162 50.800
30.958 36.512 26.909 26.909 52.388
23.812 28.575 20.638 20.638 41.275
130 138 104 104 250
169 189 136 136 320
13,200 14,000 10,600 10,600 25,500
17,300 19,300 13,900 13,900 33,000
3,500 3,600 3,200 3,200 3,200
4,700 4,800 4,200 4,200 4,300
44.983
82.931 93.264
23.812 30.162
25.400 30.302
19.050 23.812
76.0 102
98.0 134
7,750 10,400
10,000 13,700
4,500 4,000
6,000 5,300
45.000
85.000 88.900
20.638 20.638
21.692 22.225
17.462 16.513
69.5 76.5
79.5 90.5
7,100 7,800
8,100 9,250
4,400 4,100
5,800 5,500
45.237
87.312
30.162
30.886
23.812
94.0
9,600
12,000
4,400
5,900
45.242
73.431 77.788
19.558 19.842
19.812 19.842
15.748 15.080
54.0 57.5
76.0 73.5
5,550 5,850
7,750 7,500
4,800 4,600
6,400 6,200
45.618
82.550 82.931 83.058 85.000
23.812 23.812 23.876 23.812
25.400 25.400 25.400 25.400
19.050 19.050 19.114 19.050
76.0 76.0 76.0 76.0
98.0 98.0 98.0 98.0
7,750 7,750 7,750 7,750
10,000 10,000 10,000 10,000
4,500 4,500 4,500 4,500
6,000 6,000 6,000 6,000
45.987
74.976
18.000
18.000
14.000
51.0
71.0
5,200
7,250
4,700
6,300
46.038
79.375 82.931 85.000 85.000 90.119 93.264 95.250
17.462 23.812 20.638 25.400 23.000 30.162 27.783
17.462 25.400 21.692 25.608 21.692 30.302 29.900
13.495 19.050 17.462 20.638 21.808 23.812 22.225
45.5 76.0 69.5 79.0 69.5 102 108
56.0 98.0 79.5 104 79.5 134 129
4,600 7,750 7,100 8,050 7,100 10,400 11,000
5,700 10,000 8,100 10,600 8,100 13,700 13,200
4,600 4,500 4,400 4,400 4,400 4,000 4,200
6,200 6,000 5,800 5,800 5,800 5,300 5,600
47.625
88.900 88.900 93.264 95.250 96.838 101.600 104.775
20.638 25.400 30.162 30.162 21.000 34.925 30.162
22.225 25.400 30.302 29.370 21.946 36.068 29.317
16.513 19.050 23.812 23.020 15.875 26.988 24.605
76.5 82.0 102 109 78.0 135 115
90.5 101 134 147 96.5 165 148
7,800 8,350 10,400 11,100 7,950 13,800 11,700
9,250 10,300 13,700 15,000 9,850 16,800 15,000
4,100 4,200 4,000 4,000 3,700 3,800 3,500
5,500 5,600 5,300 5,300 5,000 5,000 4,700
117
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision class types, Class 4 and 2. B-170
●Tapered Roller Bearings
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra ＊
Da db
da Db
ras 2.3 ras 5.6 min 3.56
15° min 4.75
Bearing numbers
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
da
db
Da
Db
4T-45280/45220 4T-HM807040/HM807010 4T-55175C/55437 4T-55176C/55437 4T-6277/6220
55 66 70 65 67
54 59 64 65 60
93 89 92 92 108
99 100 105 105 117
0.8 3.5 3.5 0.8 3.5
3.3 3.3 3.3 3.3 3.3
4T-25584/25520 4T-3776/3720
53 59
51 53
74 82
77 88
1.5 3.5
4T-358/354A 4T-367/362A
53 55
50 51
77 81
80 84
4T-3586/3525
58
52
75
4T-LM102949/LM102910 4T-LM603049/LM603011
56 57
50 50
4T-25590/25519 4T-25590/25520 4T-25590/25522 4T-25590/25526
58 58 58 58
4T-LM503349A†/LM503310††
kg
e
Y2
Yo
7.9 7.4 –7.41 –7.41 19.5
0.33 0.49 0.88 0.88 0.30
1.80 1.23 0.68 0.68 2.01
0.99 0.68 0.37 0.37 1.11
1.35 1.62 1.45 1.09 3.58
0.8 3.3
6.2 8.3
0.33 0.34
1.79 1.77
0.99 0.97
0.555 0.952
1.5 2
1.3 1.3
5.1 4.0
0.31 0.32
1.96 1.88
1.08 1.03
0.505 0.595
81
3.5
3.3
10.0
0.31
1.96
1.08
0.765
68 71
70 74
3.5 3.5
0.8 0.8
4.7 2.2
0.31 0.43
1.97 1.41
1.08 0.77
0.307 0.372
51 51 51 51
73 74 73 74
77 77 77 78
3.5 3.5 3.5 3.5
2 0.8 2 2.3
6.2 6.2 6.2 6.2
0.33 0.33 0.33 0.33
1.79 1.79 1.79 1.79
0.99 0.99 0.99 0.99
0.534 0.543 0.545 0.581
57
51
67
71
＊
1.5
1.9
0.40
1.49
0.82
0.296
4T-18690/18620 4T-25592/25520 4T-359A/354A 4T-2984/2924 4T-359S/352 4T-3777/3720 4T-436/432
56 58 57 58 55 60 59
51 52 51 52 51 53 52
71 74 77 76 78 82 83
74 77 80 80 82 88 87
2.8 3.5 3.5 3.5 2.3 3.5 3.5
1.5 0.8 1.3 1.3 2.3 3.3 2.3
2.2 6.2 5.1 6.4 5.1 8.3 9.2
0.37 0.33 0.31 0.35 0.31 0.34 0.28
1.60 1.79 1.96 1.73 1.96 1.77 2.11
0.88 0.99 1.08 0.95 1.08 0.97 1.16
0.329 0.538 0.489 0.615 0.651 0.934 0.927
4T-369A/362A 4T-M804048/M804010 4T-3778/3720 4T-HM804846/HM804810 4T-386A/382A 4T-528/522 4T-463/453X
60 57 67 66 56 62 65
53 56 55 57 55 55 56
81 77 82 81 89 89 92
84 85 88 91 92 95 98
3.5 0.8 6.4 3.5 0.8 3.5 4.8
1.3 3.3 3.3 3.3 0.8 3.3 3.3
4.0 1.7 8.3 3.7 3.1 12.9 7.1
0.32 0.55 0.34 0.55 0.35 0.29 0.34
1.88 1.10 1.77 1.10 1.69 2.10 1.79
1.03 0.60 0.97 0.60 0.93 1.16 0.98
0.559 0.662 0.898 0.978 0.72 1.3 1.24
Note: 3. Chamfer dimensions of bearings marked "＊" are shown in drawings. 1 "−" means that load center at outside on end of inner ring.
B-171
a
Mass
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 47.625∼50.800mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Limiting speeds static kgf
Cr
Cor
rpm
Cr
Cor
grease
oil
47.625
104.775 111.125 123.825
30.162 30.162 36.512
30.958 26.909 32.791
23.812 20.638 25.400
130 104 154
169 136 188
13,200 10,600 15,700
17,300 13,900 19,200
3,500 3,200 2,900
4,700 4,200 3,900
48.412
95.250 95.250
30.162 30.162
29.370 29.370
23.020 23.020
109 109
147 147
11,100 11,100
15,000 15,000
4,000 4,000
5,300 5,300
49.212
93.264 103.188 104.775 114.300 114.300
30.162 43.658 36.512 44.450 44.450
30.302 44.475 36.512 44.450 44.450
23.812 36.512 28.575 34.925 36.068
102 174 138 186 203
134 232 189 225 261
10,400 17,700 14,000 19,000 20,700
13,700 23,600 19,300 23,000 26,600
4,000 3,800 3,600 3,600 3,500
5,300 5,000 4,800 4,800 4,700
49.987
82.550 92.075 114.300
21.590 24.608 44.450
22.225 25.400 44.450
16.510 19.845 36.068
69.5 83.5 203
94.0 116 261
7,100 8,550 20,700
9,600 11,800 26,600
4,300 4,000 3,500
5,700 5,300 4,700
50.000
82.000 84.000 88.900 88.900 90.000 105.000 110.000
21.500 22.000 20.638 20.638 28.000 37.000 22.000
21.500 22.000 22.225 22.225 28.000 36.000 21.996
17.000 17.500 16.513 16.513 23.000 29.000 18.824
69.5 69.5 76.5 76.5 106 138 89.5
94.0 94.5 90.5 90.5 141 189 120
7,100 7,100 7,800 7,800 10,800 14,000 9,150
9,600 9,600 9,250 9,250 14,400 19,300 12,300
4,300 4,300 4,100 4,100 4,100 3,600 3,200
5,700 5,700 5,500 5,500 5,400 4,800 4,300
50.800
82.550 85.000 88.900 88.900 88.900 90.000 92.075 93.264 93.264 95.250 95.250 96.838 97.630 98.425
21.590 17.462 17.462 20.638 20.638 20.000 24.608 30.162 30.162 27.783 30.162 21.000 24.608 30.162
22.225 17.462 17.462 22.225 22.225 22.225 25.400 30.302 30.302 28.575 30.302 21.946 24.608 30.302
16.510 13.495 13.495 16.513 16.513 15.875 19.845 23.812 23.812 22.225 23.812 15.875 19.446 23.812
69.5 49.5 49.5 76.5 76.5 76.5 83.5 102 102 107 102 78.0 88.5 102
94.0 65.0 65.0 90.5 90.5 90.5 116 134 134 139 134 96.5 128 134
7,100 5,050 5,050 7,800 7,800 7,800 8,550 10,400 10,400 10,900 10,400 7,950 9,000 10,400
9,600 6,600 6,600 9,250 9,250 9,250 11,800 13,700 13,700 14,200 13,700 9,850 13,000 13,700
4,300 4,200 4,200 4,100 4,100 4,100 4,000 4,000 4,000 3,900 4,000 3,700 3,700 4,000
5,700 5,600 5,600 5,500 5,500 5,500 5,300 5,300 5,300 5,200 5,300 5,000 4,900 5,300
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring), this value applies only to high precision class types, Class 4 and 2.
B-172
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
da
db
Da
Db
4T-45282/45220 4T-55187C/55437 4T-72188C/72487
63 69 69
57 62 67
93 92 102
99 105 116
3.5 3.5 0.8
3.3 3.3 3.3
4T-HM804848/HM804810 4T-HM804849/HM804810
63 66
57 57
81 81
91 91
2.3 3.5
4T-3781/3720 4T-5395/5335 4T-HM807044/HM807010 4T-65390/65320 4T-HH506348/HH506310
62 66 69 70 71
56 60 63 60 61
82 89 89 97 97
88 97 100 107 107
4T-LM104947A†/LM104911 4T-28579†/28521 4T-HH506349†/HH506310
55 60 72
55 56 61
75 83 97
＃4T-JLM104948/JLM104910 ＃4T-JLM704649/JLM704610 4T-365/362A 4T-366/362A ＃4T-JM205149/JM205110 ＃4T-JHM807045/JHM807012 4T-396/394A
60 62 58 59 62 69 61
55 56 55 55 57 63 60
4T-LM104949/LM104911 4T-18790/18720 4T-18790/18724 4T-368/362A 4T-370A/362A 4T-368A/362 4T-28580/28521 4T-3775/3720 4T-3780/3720 4T-33889/33821 4T-3780/3726 4T-385A/382A 4T-28678/28622 4T-3780/3732
62 62 62 58 65 62 63 58 64 64 64 61 65 64
55 56 56 56 56 56 57 58 58 58 58 60 58 58
a
Mass kg
e
Y2
Yo
7.9 –7.41 –1.51
0.33 0.88 0.74
1.80 0.68 0.81
0.99 0.37 0.45
1.29 1.4 2.16
3.3 3.3
3.7 3.7
0.55 0.55
1.10 1.10
0.60 0.60
0.967 0.964
3.5 3.5 3.5 3.5 3.5
3.3 3.3 3.3 3.3 3.3
8.3 16.1 7.4 12.5 13.3
0.34 0.30 0.49 0.43 0.40
1.77 2.02 1.23 1.39 1.49
0.97 1.11 0.68 0.77 0.82
0.877 1.75 1.52 2.23 2.33
78 87 107
0.5 2.3 3.5
1.3 0.8 3.3
5.8 4.6 13.3
0.31 0.38 0.40
1.97 1.59 1.49
1.08 0.87 0.82
0.434 0.718 2.27
76 76 81 81 80 90 101
78 80 84 84 85 100 104
3 3.5 2 2.3 3 3 0.8
0.5 1.5 1.3 1.3 2.5 2.5 1.3
5.4 2.3 4.0 4.0 7.4 7.5 0.7
0.31 0.44 0.32 0.32 0.33 0.49 0.40
1.97 1.37 1.88 1.88 1.82 1.23 1.49
1.08 0.75 1.03 1.03 1.00 0.68 0.82
0.42 0.466 0.53 0.529 0.752 1.52 1.06
75 77 78 81 81 81 83 82 82 85 83 89 88 84
78 80 82 84 84 84 87 88 88 90 89 92 92 90
3.5 3.5 3.5 1.5 5 3.5 3.5 0.8 3.5 3.5 3.5 2.3 3.5 3.5
1.3 1.5 1.3 1.3 1.3 2 0.8 3.3 3.3 2.3 3.3 0.8 0.8 3.3
5.8 0.8 0.8 4.0 4.0 4.0 4.6 8.3 8.3 8.0 8.3 3.1 3.3 8.3
0.31 0.41 0.41 0.32 0.32 0.32 0.38 0.34 0.34 0.33 0.34 0.35 0.40 0.34
1.97 1.48 1.48 1.88 1.88 1.88 1.59 1.77 1.77 1.82 1.77 1.69 1.49 1.77
1.08 0.81 0.81 1.03 1.03 1.03 0.87 0.97 0.97 1.00 0.97 0.93 0.82 0.97
0.419 0.374 0.431 0.519 0.511 0.525 0.703 0.852 0.848 0.876 0.903 0.676 0.852 0.993
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 1 "−" means that load center at outside on end of inner ring.
B-173
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 50.800∼55.000mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Limiting speeds static kgf
Cr
Cor
110 135 115 130 138 143 141 104 104 119 138 130 172 154 158
136 165 148 169 189 178 177 136 136 174 195 153 213 188 216
rpm
Cr
Cor
grease
oil
11,200 13,800 11,700 13,200 14,000 14,500 14,400 10,600 10,600 12,200 14,100 13,200 17,500 15,700 16,100
13,900 16,800 15,000 17,300 19,300 18,100 18,100 13,900 13,900 17,800 19,800 15,600 21,700 19,200 22,000
3,700 3,800 3,500 3,500 3,600 3,700 3,600 3,200 3,200 3,200 3,200 3,300 3,300 2,900 3,000
5,000 5,000 4,700 4,700 4,800 4,900 4,800 4,200 4,200 4,300 4,200 4,400 4,400 3,900 4,100
7,800
9,250
4,100
5,500
50.800
101.600 101.600 104.775 104.775 104.775 104.775 107.950 111.125 112.712 112.712 112.712 117.475 120.650 123.825 123.825
31.750 34.925 30.162 30.162 36.512 36.512 36.512 30.162 30.162 30.162 30.162 33.338 41.275 36.512 38.100
31.750 36.068 29.317 30.958 36.512 36.512 36.957 28.575 26.909 30.048 30.162 31.750 41.275 32.791 36.678
25.400 26.988 24.605 23.812 28.575 28.575 28.575 20.638 20.638 23.812 23.812 23.812 31.750 25.400 30.162
51.592
88.900
20.638
22.225
16.513
76.5
52.388
92.075 93.264 95.250
24.608 30.162 27.783
25.400 30.302 28.575
19.845 23.812 22.225
83.5 102 107
116 134 139
8,550 10,400 10,900
11,800 13,700 14,200
4,000 4,000 3,900
5,300 5,300 5,200
53.975
88.900 95.250 96.838 104.775 104.775 107.950 120.650 122.238 122.238 123.825 123.825 130.175 140.030
19.050 27.783 21.000 30.162 36.512 36.512 41.275 33.338 43.658 36.512 38.100 36.512 36.512
19.050 28.575 21.946 30.958 36.512 36.957 41.275 31.750 43.764 32.791 36.678 33.338 33.236
13.492 22.225 15.875 23.812 28.575 28.575 31.750 23.812 36.512 25.400 30.162 23.812 23.520
61.0 107 78.0 130 138 141 172 134 194 154 158 156 171
82.5 139 96.5 169 189 177 213 163 283 188 216 186 212
6,200 10,900 7,950 13,200 14,000 14,400 17,500 13,700 19,700 15,700 16,100 15,900 17,400
8,450 14,200 9,850 17,300 19,300 18,100 21,700 16,600 28,900 19,200 22,000 19,000 21,600
4,000 3,900 3,700 3,500 3,600 3,600 3,300 3,100 3,100 2,900 3,000 2,700 2,600
5,300 5,200 5,000 4,700 4,800 4,800 4,400 4,200 4,100 3,900 4,100 3,600 3,400
54.488
104.775
36.512
36.512
28.575
138
189
14,000
19,300
3,600
4,800
55.000
90.000
23.000
23.000
18.500
109
7,900
11,100
3,900
5,300
77.5
90.5
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40.
B-174
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
3.5 0.8 0.8 6.4 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 2.3
3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
da
db
Da
Db
4T-49585/49520 4T-529/522 4T-455/453X 4T-45284/45220 4T-HM807046/HM807010 4T-59200/59412 4T-537/532X 4T-HM907643/HM907614 4T-55200C/55443 4T-3975/3920 4T-39575/39520 4T-66200/66462 4T-619/612 4T-72200C/72487 4T-555/552A
66 59 60 71 70 68 65 74 71 68 68 71 67 77 66
59 58 59 59 63 61 59 65 65 61 61 65 61 67 62
88 89 92 93 89 92 94 91 92 99 101 100 105 102 109
96 95 98 99 100 99 100 105 106 106 107 111 110 116 116
4T-368S/362A
59
56
81
84
2
4T-28584/28521 4T-3767/3720 4T-33890/33821
65 63 61
58 59 59
83 82 85
87 88 90
4T-LM806649/LM806610 4T-33895/33822 4T-389A/382A 4T-45287/45220 4T-HM807049/HM807010 4T-539/532X 4T-621/612 4T-66584/66520 4T-5578/5535 4T-72212C/72487 4T-557S/552A 4T-HM911242/HM911210 4T-78214C/78551
63 63 61 62 73 68 70 75 73 79 71 79 79
60 60 60 62 63 61 63 68 67 67 65 74 77
80 86 89 93 89 94 105 105 106 102 109 109 117
4T-HM807048/HM807010
73
63
＃4T-JLM506849/JLM506810
63
61
kg
e
Y2
Yo
7.1 12.9 7.1 7.9 7.4 9.6 12.3 –7.21 –7.41 4.5 6.6 0.4 14.4 –1.51 9.4
0.40 0.29 0.34 0.33 0.49 0.40 0.30 0.88 0.88 0.40 0.34 0.63 0.31 0.74 0.35
1.50 2.10 1.79 1.80 1.23 1.49 2.02 0.68 0.68 1.49 1.77 0.96 1.91 0.81 1.73
0.82 1.16 0.98 0.99 0.68 0.82 1.11 0.37 0.37 0.82 0.97 0.53 1.05 0.45 0.95
1.13 1.24 1.19 1.22 1.49 1.44 1.55 1.36 1.34 1.53 1.54 1.67 2.3 2.1 2.34
1.3
4.0
0.32
1.88
1.03
0.507
3.5 2.3 1.5
0.8 3.3 2.3
4.6 8.3 8.0
0.38 0.34 0.33
1.59 1.77 1.82
0.87 0.97 1.00
0.677 0.819 0.851
85 90 92 99 100 100 110 116 116 116 116 124 132
2.3 1.5 0.8 0.8 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 0.8
2 0.8 0.8 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 2.3
–2.21 8.0 3.1 7.9 7.4 12.3 14.4 –1.81 13.3 –1.51 9.4 –5.21 –8.51
0.55 0.33 0.35 0.33 0.49 0.30 0.31 0.67 0.36 0.74 0.35 0.82 0.87
1.10 1.82 1.69 1.80 1.23 2.02 1.91 0.90 1.67 0.81 1.73 0.73 0.69
0.60 1.00 0.93 0.99 0.68 1.11 1.05 0.50 0.92 0.45 0.95 0.40 0.38
0.437 0.824 0.633 1.17 1.41 1.47 2.21 1.79 2.64 2.03 2.26 2.27 2.77
89
100
3.5
3.3
7.4
0.49
1.23
0.68
1.40
82
86
1.5
0.5
2.8
0.40
1.49
0.82
0.558
1 "−" means that load center at outside on end of inner ring.
B-175
a
Mass
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 55.000∼60.000mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN
Limiting speeds static kgf
rpm
B
C
Cr
Cor
Cr
Cor
grease
oil
55.000
95.000 96.838 110.000
29.000 21.000 39.000
29.000 21.946 39.000
23.500 15.875 32.000
107 78.0 173
144 96.5 219
10,900 7,950 17,600
14,700 9,850 22,400
3,800 3,700 3,500
5,100 5,000 4,600
55.562
97.630 123.825 127.000
24.608 36.512 36.512
24.608 32.791 36.512
19.446 25.400 26.988
88.5 154 163
128 188 228
9,000 15,700 16,600
13,000 19,200 23,300
3,700 2,900 2,900
4,900 3,900 3,800
55.575
96.838
21.000
21.946
15.875
78
96.5
7,950
9,850
3,700
5,000
57.150
96.838 96.838 96.838 96.838 97.630 104.775 104.775 104.775 107.950 110.000 110.000 112.712 112.712 112.712 117.475 117.475 120.650 123.825 123.825 140.030
21.000 21.000 21.000 21.000 24.608 30.162 30.162 30.162 27.783 22.000 27.795 30.162 30.162 30.162 30.162 33.338 41.275 36.512 38.100 36.512
21.946 21.946 21.946 21.946 24.608 29.317 29.317 30.958 29.317 21.996 29.317 30.048 30.162 30.162 30.162 31.750 41.275 32.791 36.678 33.236
15.875 15.875 15.875 15.875 19.446 24.605 24.605 23.812 22.225 18.824 27.000 23.812 23.812 23.812 23.812 23.812 31.750 25.400 30.162 23.520
78 78 78 78 88.5 115 115 130 115 89.5 115 119 138 138 117 130 172 154 158 171
96.5 96.5 96.5 96.5 128 148 148 169 148 120 148 174 195 195 175 153 213 188 216 212
7,950 7,950 7,950 7,950 9,000 11,700 11,700 13,200 11,700 9,150 11,700 12,200 14,100 14,100 11,900 13,200 17,500 15,700 16,100 17,400
9,850 9,850 9,850 9,850 13,000 15,000 15,000 17,300 15,000 12,300 15,000 17,800 19,800 19,800 17,900 15,600 21,700 19,200 22,000 21,600
3,700 3,700 3,700 3,700 3,700 3,500 3,500 3,500 3,500 3,200 3,500 3,200 3,200 3,200 3,000 3,300 3,300 2,900 3,000 2,600
5,000 5,000 5,000 5,000 4,900 4,700 4,700 4,700 4,700 4,300 4,700 4,300 4,200 4,200 4,000 4,400 4,400 3,900 4,100 3,400
57.531
96.838
21.000
21.946
15.875
78.0
96.5
7,950
9,850
3,700
5,000
59.972
122.238
33.338
31.750
23.812
134
163
13,700
16,600
3,100
4,200
59.987
146.050
41.275
39.688
25.400
199
234
20,300
23,900
2,400
3,200
60.000
95.000 107.950
24.000 25.400
24.000 25.400
19.000 19.050
122 140
8,500 9,350
12,400 14,200
3,700 3,200
4,900 4,300
83.0 91.5
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring), this value applies only to high precision class types, Class 4 and 2.
B-176
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm
Mass kg
ras
r1as
max
max
a
e
Y2
Yo
(approx.)
da
db
Da
Db
64 65 71
62 61 64
85 89 97
91 92 104
1.5 2.3 3
2.5 0.8 2.5
7.6 3.1 11.7
0.33 0.35 0.35
1.79 1.69 1.73
0.99 0.93 0.95
0.82 0.616 1.71
4T-28680/28622 4T-72218C/72487 4T-HM813840/HM813810
68 80 76
62 67 70
88 102 111
92 116 121
3.5 3.5 3.5
0.8 3.3 3.3
3.3 –1.51 3.7
0.40 0.74 0.50
1.49 0.81 1.20
0.82 0.45 0.66
0.774 1.99 2.34
4T-389/382A
65
61
89
92
2.3
0.8
3.1
0.35
1.69
0.93
0.608
4T-387/382A 4T-387A/382A 4T-387AS/382A 4T-387S/382A 4T-28682/28622 4T-462/453X 4T-469/453X 4T-45289/45220 4T-469/453A 4T-390/394A 4T-469/454 4T-3979/3920 4T-39580/39520 4T-39581/39520 4T-33225/33462 4T-66225/66462 4T-623/612 4T-72225C/72487 4T-555S/552A 4T-78225/78551
66 69 72 63 70 67 70 65 70 70 70 72 72 81 74 76 72 81 73 83
62 62 62 62 63 63 63 65 63 66 63 66 66 66 68 69 66 67 67 77
89 89 89 89 88 92 92 93 97 101 96 99 101 101 104 100 105 102 109 117
92 92 92 92 92 98 98 99 100 104 100 106 107 107 112 111 110 116 116 132
2.3 3.5 5 0.8 3.5 2.3 3.5 0.8 3.5 2.3 3.5 3.5 3.5 8 3.5 3.5 3.5 3.5 3.5 3.5
0.8 0.8 0.8 0.8 0.8 3.3 3.3 3.3 0.8 1.3 2 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 2.3
3.1 3.1 3.1 3.1 3.3 7.1 7.1 7.9 7.1 0.7 7.1 4.5 6.6 6.6 2.6 0.4 14.4 –1.51 9.4 –8.51
0.35 0.35 0.35 0.35 0.40 0.34 0.34 0.33 0.34 0.40 0.34 0.40 0.34 0.34 0.44 0.63 0.31 0.74 0.35 0.87
1.69 1.69 1.69 1.69 1.49 1.79 1.79 1.80 1.79 1.49 1.79 1.49 1.77 1.77 1.38 0.96 1.91 0.81 1.73 0.69
0.93 0.93 0.93 0.93 0.82 0.98 0.98 0.99 0.98 0.82 0.98 0.82 0.97 0.97 0.76 0.53 1.05 0.45 0.95 0.38
0.583 0.581 0.576 0.585 0.747 1.06 1.06 1.1 1.11 0.954 1.24 1.4 1.41 1.4 1.58 1.54 2.12 1.96 2.18 2.69
4T-388A/382A
69
63
89
92
3.5
0.8
3.1
0.35
1.69
0.93
0.575
4T-66589/66520
74
73
105
116
0.8
3.3
–1.81
0.67
0.90
0.50
1.66
4T-H913840†/H913810
88
82
124
138
3.5
3.3
–4.31
0.78
0.77
0.42
3.22
75 75
66 68
85 96
91 103
5 3.5
2.5 3.3
3.0 0.6
0.40 0.46
1.49 1.31
0.82 0.72
0.606 0.992
＃4T-JM207049/JM207010 4T-385/382A ＃4T-JH307749/JH307710
＃4T-JLM508748/JLM508710 4T-29580/29520
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 1 "−" means that load center at outside on end of inner ring.
B-177
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 60.000∼65.000mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
60.000
110.000 130.000
22.000 34.100
21.996 30.924
18.824 22.650
89.5 156.0
120 186
9,150 15,900
12,300 19,000
3,200 2,700
4,300 3,600
60.325
100.000 112.712 122.238 122.238 123.825 127.000 127.000 130.175
25.400 30.162 38.100 43.658 38.100 36.512 44.450 36.512
25.400 30.048 38.354 43.764 36.678 36.512 44.450 33.338
19.845 23.812 29.718 36.512 30.162 26.988 34.925 23.812
90.5 119 187 194 158 163 203 156
134 174 244 283 216 228 263 186
9,200 12,200 19,100 19,700 16,100 16,600 20,700 15,900
13,600 17,800 24,900 28,900 22,000 23,300 26,800 19,000
3,500 3,200 3,100 3,100 3,000 2,900 3,100 2,700
4,700 4,300 4,100 4,100 4,100 3,800 4,200 3,600
61.912
110.000 136.525 146.050
22.000 46.038 41.275
21.996 46.038 39.688
18.824 36.512 25.400
89.5 224 199
120 355 234
9,150 22,800 20,300
12,300 36,500 23,900
3,200 2,600 2,400
4,300 3,500 3,200
61.976
101.600
24.608
24.608
19.845
90.5
134
9,200
13,600
3,500
4,700
62.738
101.600
25.400
25.400
19.845
90.5
134
9,200
13,600
3,500
4,700
63.500
94.458 107.950 107.950 110.000 110.000 112.712 112.712 120.000 120.000 122.238 122.238 123.825 127.000 127.000 136.525 140.030
19.050 25.400 25.400 22.000 25.400 30.162 30.162 29.794 29.794 38.100 43.658 38.100 36.512 36.512 41.275 36.512
19.050 25.400 25.400 21.996 25.400 30.048 30.162 29.007 29.007 38.354 43.764 36.678 36.170 36.512 41.275 33.236
15.083 19.050 19.050 18.824 19.050 23.812 23.812 24.237 24.237 29.718 36.512 30.162 28.575 26.988 31.750 23.520
60.5 91.5 91.5 89.5 91.5 119 138 128 128 187 194 158 163 163 194 171
103 140 140 120 140 174 195 177 177 244 283 216 229 228 262 212
6,150 9,350 9,350 9,150 9,350 12,200 14,100 13,000 13,000 19,100 19,700 16,100 16,600 16,600 19,800 17,400
10,500 14,200 14,200 12,300 14,200 17,800 19,800 18,100 18,100 24,900 28,900 22,000 23,300 23,300 26,700 21,600
3,600 3,200 3,200 3,200 3,200 3,200 3,200 3,000 3,000 3,100 3,100 3,000 2,900 2,900 2,800 2,600
4,800 4,300 4,300 4,300 4,300 4,300 4,200 4,000 4,000 4,100 4,100 4,100 3,800 3,800 3,800 3,400
65.000
105.000 110.000
24.000 28.000
23.000 28.000
18.500 22.500
85.0 119
117 174
8,700 12,200
11,900 17,800
3,300 3,200
4,500 4,300
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. Bearing numbers marked "＃" designate J-series bearings. The accuracy of these bearings is listed in Table 6.6 on page A-40.
B-178
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
da
db
Da
Db
4T-397/394A ＃4T-JHM911244/JHM911211
69 84
68 74
101 109
104 123
0.8 3.5
1.3 3.3
4T-28985/28921 4T-3980/3920 4T-HM212044/HM212011 4T-5583/5535 4T-558/552A 4T-HM813841/HM813810 4T-65237/65500 4T-HM911245/HM911210
73 75 85 78 73 80 82 87
67 68 70 72 69 73 71 74
89 99 108 106 109 111 107 109
96 106 116 116 116 121 119 124
3.5 3.5 8 3.5 2.3 3.5 3.5 5
4T-392/394A 4T-H715334/H715311 4T-H913842/H913810
70 86 90
69 79 82
101 118 124
104 132 138
4T-28990/28920
72
68
90
4T-28995/28920
75
69
4T-L610549/L610510 4T-29585/29520 4T-29586/29520 4T-390A/394A 4T-29585/29521 4T-3982/3920 4T-39585/39520 4T-477/472 4T-483/472 4T-HM212046/HM212011 4T-5584/5535 4T-559/552A 4T-565/563 4T-HM813842/HM813810 4T-639/632 4T-78250/78551
71 77 73 73 77 77 77 73 78 80 81 78 80 82 81 85
＃4T-JLM710949/JLM710910 ＃4T-JM511946/JM511910
77 78
kg
e
Y2
Yo
0.7 –7.61
0.40 0.82
1.49 0.73
0.82 0.40
0.91 2.01
3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
2.5 4.5 11.1 13.3 9.4 3.7 9.3 –5.21
0.43 0.40 0.34 0.36 0.35 0.50 0.49 0.82
1.41 1.49 1.78 1.67 1.73 1.20 1.23 0.73
0.78 0.82 0.98 0.92 0.95 0.66 0.68 0.40
0.772 1.33 2.02 2.44 2.1 2.21 2.65 2.12
0.8 3.5 3.5
1.3 3.3 3.3
0.7 8.7 –4.31
0.40 0.47 0.78
1.49 1.27 0.77
0.82 0.70 0.42
0.879 3.47 3.17
97
2
3.3
1.7
0.43
1.41
0.78
0.768
90
97
3.5
3.3
2.5
0.43
1.41
0.78
0.764
69 71 71 70 71 71 71 72 72 73 75 72 73 76 74 79
86 96 96 101 99 99 101 107 107 108 106 109 112 111 118 117
91 103 103 104 104 106 107 114 114 116 116 116 120 121 125 132
1.5 3.5 1.5 1.5 3.5 3.5 3.5 0.8 3.5 3.5 3.5 3.5 3.5 3.5 3.5 2.3
1.5 3.3 3.3 1.3 1.3 3.3 3.3 2 2 3.3 3.3 3.3 3.3 3.3 3.3 2.3
–0.61 0.6 0.6 0.7 0.6 4.5 6.6 3.9 3.9 11.1 13.3 9.4 8.3 3.7 11.4 –8.51
0.42 0.46 0.46 0.40 0.46 0.40 0.34 0.38 0.38 0.34 0.36 0.35 0.36 0.50 0.36 0.87
1.41 1.31 1.31 1.49 1.31 1.49 1.77 1.56 1.56 1.78 1.67 1.73 1.65 1.20 1.66 0.69
0.78 0.72 0.72 0.82 0.72 0.82 0.97 0.86 0.86 0.98 0.92 0.95 0.91 0.66 0.91 0.38
0.449 0.924 0.929 0.851 0.982 1.26 1.27 1.49 1.48 1.95 2.34 2.01 2.11 2.12 2.85 2.54
71 72
96 99
101 105
3 3
1 2.5
0.3 3.4
0.45 0.40
1.32 1.49
0.73 0.82
0.742 1.08
1 "−" means that load center at outside on end of inner ring.
B-179
a
Mass
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 65.000∼70.000mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
65.000
120.000
39.000
38.500
32.000
185
248
18,800
25,300
3,100
4,100
65.088
135.755
53.975
56.007
44.450
278
380
28,300
38,500
2,900
3,800
66.675
103.213 107.950 110.000 112.712 112.712 112.712 122.238 123.825 127.000 130.175 135.755 136.525 136.525
17.602 25.400 22.000 30.162 30.162 30.162 38.100 38.100 36.512 41.275 53.975 41.275 41.275
17.602 25.400 21.996 30.048 30.048 30.162 38.354 36.678 36.512 41.275 56.007 41.275 41.275
11.989 19.050 18.824 23.812 23.812 23.812 29.718 30.162 26.988 31.750 44.450 31.750 31.750
60.0 91.5 89.5 119 119 138 187 158 163 194 278 194 226
78.0 140 120 174 174 195 244 216 228 262 380 262 293
6,100 9,350 9,150 12,200 12,200 14,100 19,100 16,100 16,600 19,800 28,300 19,800 23,100
8,000 14,200 12,300 17,800 17,800 19,800 24,900 22,000 23,300 26,700 38,500 26,700 29,900
3,300 3,200 3,200 3,200 3,200 3,200 3,100 3,000 2,900 2,800 2,900 2,800 2,700
4,400 4,300 4,300 4,300 4,300 4,200 4,100 4,100 3,800 3,800 3,800 3,800 3,700
68.262
110.000 120.000 123.825 136.525 136.525
22.000 29.794 38.100 41.275 46.038
21.996 29.007 36.678 41.275 46.038
18.824 24.237 30.162 31.750 36.512
89.5 128 158 226 224
120 177 216 293 355
9,150 13,000 16,100 23,100 22,800
12,300 18,100 22,000 29,900 36,500
3,200 3,000 3,000 2,700 2,600
4,300 4,000 4,100 3,700 3,500
69.850
112.712 117.475 120.000 120.000 120.650 127.000 136.525 146.050 150.089 168.275
25.400 30.162 29.794 32.545 25.400 36.512 41.275 41.275 44.450 53.975
25.400 30.162 29.007 32.545 25.400 36.170 41.275 41.275 46.672 56.363
19.050 23.812 24.237 26.195 19.050 28.575 31.750 31.750 36.512 41.275
95.5 117 128 147 95.5 163 194 206 261 340
151 175 177 214 151 229 262 295 360 460
9,750 11,900 13,000 15,000 9,750 16,600 19,800 21,000 26,600 34,500
15,400 17,900 18,100 21,800 15,400 23,300 26,700 30,000 37,000 46,500
3,100 3,000 3,000 3,000 3,100 2,900 2,800 2,500 2,400 2,200
4,100 4,000 4,000 4,000 4,100 3,800 3,800 3,300 3,200 3,000
69.952
121.442
24.608
23.012
17.462
91.0
127
9,300
13,000
2,900
3,800
70.000
110.000 115.000
26.000 29.000
25.000 29.000
20.500 23.000
97.0 124
150 171
9,900 12,700
15,300 17,500
3,200 3,100
4,200 4,100
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40.
B-180
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
a
e
Y2
Yo
Mass kg
da
db
Da
Db
80
74
107
114
3
2.5
10.9
0.34
1.78
0.98
1.90
4T-6379/6320
84
77
117
126
3.5
3.3
18.8
0.32
1.85
1.02
3.71
4T-L812148/L812111 4T-29590/29520 4T-395A/394A 4T-3984/3925 4T-3994/3920 4T-39590/39520 4T-HM212049/HM212010 4T-560/552A 4T-HM813844/HM813810 4T-641/633 4T-6386/6320 4T-641/632 4T-H414242/H414210
74 80 73 80 84 80 82 81 85 83 87 83 85
72 73 73 74 74 74 75 75 78 77 77 77 81
96 96 101 101 99 101 110 109 111 116 117 118 121
99 103 104 106 106 107 116 116 121 124 126 125 129
1.5 3.5 0.8 3.5 5.5 3.5 3.5 3.5 3.5 3.5 4.3 3.5 3.5
0.8 3.3 1.3 0.8 3.3 3.3 1.5 3.3 3.3 3.3 3.3 3.3 3.3
–3.71 0.6 0.7 4.5 4.5 6.6 11.1 9.4 3.7 11.4 18.8 11.4 11.0
0.49 0.46 0.40 0.40 0.40 0.34 0.34 0.35 0.50 0.36 0.32 0.36 0.36
1.23 1.31 1.49 1.49 1.49 1.77 1.78 1.73 1.20 1.66 1.85 1.66 1.67
0.68 0.72 0.82 0.82 0.82 0.97 0.98 0.95 0.66 0.91 1.02 0.91 0.92
0.48 0.86 0.796 1.19 1.18 1.19 1.86 1.92 2.03 2.41 3.64 2.74 2.75
4T-399A/394A 4T-480/472 4T-560S/552A 4T-H414245/H414210 4T-H715343/H715311
78 82 83 86 90
74 75 76 82 84
101 107 109 121 118
104 114 116 129 132
2.3 3.5 3.5 3.5 3.5
1.3 2 3.3 3.3 3.3
0.7 3.9 9.4 11.0 8.7
0.40 0.38 0.35 0.36 0.47
1.49 1.56 1.73 1.67 1.27
0.82 0.86 0.95 0.92 0.70
0.764 1.37 1.87 2.7 3.24
4T-29675/29620 4T-33275/33462 4T-482/472 4T-47487/47420 4T-29675/29630 4T-566/563 4T-643/632 4T-655/653 4T-745A/742 4T-835/832
80 84 83 84 80 85 86 88 88 91
77 77 77 78 77 78 80 82 82 84
101 104 107 107 104 112 118 131 134 149
109 112 114 114 113 120 125 139 142 155
1.5 3.5 3.5 3.5 1.5 3.5 3.5 3.5 3.5 3.5
3.3 3.3 2 3.3 3.3 3.3 3.3 3.3 3.3 3.3
– 0.91 2.6 3.9 6.1 – 0.91 8.3 11.4 8.0 12.0 18.5
0.49 0.44 0.38 0.36 0.49 0.36 0.36 0.41 0.33 0.30
1.23 1.38 1.56 1.67 1.23 1.65 1.66 1.47 1.84 2.00
0.68 0.76 0.86 0.92 0.68 0.91 0.91 0.81 1.01 1.10
0.949 1.28 1.33 1.47 1.17 1.92 2.63 3.28 3.92 6.13
4T-34274/34478
81
78
110
116
2
2
–1.21
0.45
1.33
0.73
1.11
78 83
77 77
98 103
105 110
1 3
2.5 2.5
– 0.31 2.5
0.49 0.43
1.23 1.39
0.68 0.77
0.889 1.13
＃4T-JH211749/JH211710
＃4T-JLM813049/JLM813010 ＃4T-JM612949/JM612910
1 "−" means that load center at outside on end of inner ring.
B-181
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 70.000∼76.200mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
70.000
120.000 150.000
29.794 41.275
29.007 39.688
24.237 25.400
128 199
177 234
13,000 20,300
18,100 23,900
3,000 2,400
4,000 3,200
71.438
117.475 120.000 127.000 136.525 136.525 136.525
30.162 32.545 36.512 41.275 41.275 46.038
30.162 32.545 36.170 41.275 41.275 46.038
23.812 26.195 28.575 31.750 31.750 36.512
117 147 163 194 226 224
175 214 229 262 293 355
11,900 15,000 16,600 19,800 23,100 22,800
17,900 21,800 23,300 26,700 29,900 36,500
3,000 3,000 2,900 2,800 2,700 2,600
4,000 4,000 3,800 3,800 3,700 3,500
73.025
112.712 117.475 127.000 139.992 149.225 150.089
25.400 30.162 36.512 36.512 53.975 44.450
25.400 30.162 36.170 36.098 54.229 46.672
19.050 23.812 28.575 28.575 44.450 36.512
95.5 117 163 178 287 261
151 175 229 265 410 360
9,750 11,900 16,600 18,100 29,300 26,600
15,400 17,900 23,300 27,100 41,500 37,000
3,100 3,000 2,900 2,600 2,500 2,400
4,100 4,000 3,800 3,400 3,400 3,200
73.817
112.712 127.000
25.400 36.512
25.400 36.170
19.050 28.575
95.5 163
151 229
9,750 16,600
15,400 23,300
3,100 2,900
4,100 3,800
74.612
139.992
36.512
36.098
28.575
178
265
18,100
27,100
2,600
3,400
75.000
115.000 120.000 145.000
25.000 31.000 51.000
25.000 29.500 51.000
19.000 25.000 42.000
94.5 131 287
143 197 410
9,650 13,300 29,300
14,600 20,100 41,500
3,000 2,900 2,500
4,000 3,900 3,400
76.200
109.538 121.442 121.442 127.000 133.350 133.350 135.733 136.525 139.992 139.992 146.050 149.225 150.089
19.050 24.608 24.608 30.162 33.338 39.688 44.450 30.162 36.512 36.512 41.275 53.975 44.450
19.050 23.012 23.012 31.000 33.338 39.688 46.100 29.769 36.098 36.098 41.275 54.229 46.672
15.083 17.462 17.462 22.225 26.195 32.545 34.925 22.225 28.575 28.575 31.750 44.450 36.512
63.0 91.0 91.0 135 153 177 211 129 178 178 206 287 261
115 127 127 194 235 305 330 189 265 265 295 410 360
6,450 9,300 9,300 13,800 15,600 18,000 21,600 13,200 18,100 18,100 21,000 29,300 26,600
11,700 13,000 13,000 19,800 24,000 31,000 34,000 19,300 27,100 27,100 30,000 41,500 37,000
3,100 2,900 2,900 2,800 2,600 2,600 2,700 2,600 2,600 2,600 2,500 2,500 2,400
4,100 3,800 3,800 3,700 3,500 3,500 3,500 3,500 3,400 3,400 3,300 3,400 3,200
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40.
B-182
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
da
db
Da
Db
4T-484/472 ＃4T-JH913848/JH913811
80 92
77 82
107 126
114 146
2 2
2 3.3
4T-33281/33462 4T-47490/47420 4T-567A/563 4T-644/632 4T-H414249/H414210 4T-H715345/H715311
85 86 86 87 89 93
79 79 80 81 83 87
104 107 112 118 121 118
112 114 120 125 129 132
3.5 3.5 3.5 3.5 3.5 3.5
4T-29685/29620 4T-33287/33462 4T-567/563 4T-576/572 4T-6460/6420 4T-744/742
86 87 88 90 93 91
80 80 81 83 87 85
101 104 112 125 129 134
109 112 120 133 140 142
4T-29688/29620 4T-568/563
83 83
80 82
101 112
4T-577/572
91
85
＃4T-JLM714149/JLM714110 ＃4T-JM714249/JM714210 ＃4T-JH415647/JH415610
87 88 94
4T-L814749/L814710 4T-34300/34478 4T-34301/34478 4T-42687/42620 4T-47678/47620 4T-HM516442/HM516410 4T-5760/5735 4T-495A/493 4T-575/572 4T-575S/572 4T-659/653 4T-6461A/6420 4T-748S/742
84 86 89 90 97 93 94 92 92 99 93 108 93
kg
e
Y2
Yo
3.9 – 4.31
0.38 0.78
1.56 0.77
0.86 0.42
1.33 3.08
3.3 3.3 3.3 3.3 3.3 3.3
2.6 6.1 8.3 11.4 11.0 8.7
0.44 0.36 0.36 0.36 0.36 0.47
1.38 1.67 1.65 1.66 1.67 1.27
0.76 0.92 0.91 0.91 0.92 0.70
1.24 1.42 1.87 2.57 2.58 3.11
3.5 3.5 3.5 3.5 3.5 3.5
3.3 3.3 3.3 3.3 3.3 3.3
– 0.91 2.6 8.3 5.5 14.8 12.0
0.49 0.44 0.36 0.40 0.36 0.33
1.23 1.38 1.65 1.49 1.66 1.84
0.68 0.76 0.91 0.82 0.91 1.01
0.873 1.19 1.82 2.53 4.42 3.79
109 120
1.5 0.8
3.3 3.3
– 0.91 8.3
0.49 0.36
1.23 1.65
0.68 0.91
0.86 1.80
125
133
3.5
3.3
5.5
0.40
1.49
0.82
2.48
81 83 89
104 108 129
110 115 139
3 3 3
2.5 2.5 2.5
– 0.31 1.9 14.1
0.46 0.44 0.36
1.31 1.35 1.66
0.72 0.74 0.91
0.875 1.29 3.81
82 83 83 84 85 87 88 86 86 86 87 89 87
100 110 110 114 119 118 119 122 125 125 131 129 134
105 116 116 121 128 128 130 130 133 133 139 140 142
1.5 2 3.5 3.5 6.4 3.5 3.5 3.5 3.5 6.8 3.5 9.7 3.5
1.5 2 2 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
– 5.01 –1.21 –1.21 2.8 3.9 7.5 11.0 0.7 5.5 5.5 8.0 14.8 12.0
0.50 0.45 0.45 0.42 0.40 0.40 0.41 0.44 0.40 0.40 0.41 0.36 0.33
1.20 1.33 1.33 1.43 1.48 1.49 1.48 1.35 1.49 1.49 1.47 1.66 1.84
0.66 0.73 0.73 0.79 0.82 0.82 0.81 0.74 0.82 0.82 0.81 0.91 1.01
0.579 0.982 0.977 1.46 1.92 2.43 2.75 1.83 2.43 2.41 3.04 4.23 3.66
1 "−" means that load center at outside on end of inner ring.
B-183
a
Mass
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 76.200∼83.345mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
76.200
149.225 161.925 180.975 190.500
53.975 53.975 53.975 57.150
54.229 55.100 53.183 57.531
44.450 42.862 35.720 46.038
287 310 325 445
410 460 415 610
29,300 31,500 33,000 45,000
41,500 47,000 42,500 62,000
2,500 2,300 1,900 1,900
3,400 3,000 2,600 2,600
77.788
117.475 121.442 127.000 136.525 136.525
25.400 24.608 30.162 30.162 46.038
25.400 23.012 31.000 29.769 46.038
19.050 17.462 22.225 22.225 36.512
99.5 91.0 135 129 224
162 127 194 189 355
10,200 9,300 13,800 13,200 22,800
16,500 13,000 19,800 19,300 36,500
2,900 2,900 2,800 2,600 2,600
3,900 3,800 3,700 3,500 3,500
79.375
146.050 161.925 190.500
41.275 47.625 57.150
41.275 48.260 57.531
31.750 38.100 46.038
206 270 445
295 385 610
21,000 27,500 45,000
30,000 39,000 62,000
2,500 2,300 1,900
3,300 3,100 2,600
80.000
130.000
35.000
34.000
28.500
166
249
16,900
25,400
2,700
3,600
80.962
133.350 136.525 139.992 150.089
33.338 30.162 36.512 44.450
33.338 29.769 36.098 46.672
26.195 22.225 28.575 36.512
153 129 178 261
235 189 265 360
15,600 13,200 18,100 26,600
24,000 19,300 27,100 37,000
2,600 2,600 2,600 2,400
3,500 3,500 3,400 3,200
82.550
125.412 133.350 133.350 136.525 139.992 139.992 146.050 150.089 152.400 152.400 161.925 161.925 168.275
25.400 33.338 39.688 30.162 36.512 36.512 41.275 44.450 39.688 41.275 47.625 53.975 53.975
25.400 33.338 39.688 29.769 36.098 36.098 41.275 46.672 36.322 41.275 48.260 55.100 56.363
19.845 26.195 32.545 22.225 28.575 28.575 31.750 36.512 30.162 31.750 38.100 42.862 41.275
102 153 177 129 178 178 206 261 180 206 270 310 340
163 235 305 189 265 265 295 360 279 295 385 460 460
10,400 15,600 18,000 13,200 18,100 18,100 21,000 26,600 18,300 21,000 27,500 31,500 34,500
16,600 24,000 31,000 19,300 27,100 27,100 30,000 37,000 28,400 30,000 39,000 47,000 46,500
2,700 2,600 2,600 2,600 2,600 2,600 2,500 2,400 2,300 2,500 2,300 2,300 2,200
3,600 3,500 3,500 3,500 3,400 3,400 3,300 3,200 3,100 3,300 3,100 3,000 3,000
83.345
125.412 125.412 125.412
25.400 25.400 25.400
25.400 25.400 25.400
19.845 19.845 19.845
102 102 102
163 163 163
10,400 10,400 10,400
16,600 16,600 16,600
2,700 2,700 2,700
3,600 3,600 3,600
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision class types, Class 4 and 2. B-184
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
da
db
Da
Db
4T-6461/6420 4T-6576/6535 4T-H917840/H917810†† 4T-HH221430/HH221410
96 99 110 101
89 92 100 95
129 141 152 171
140 154 170 179
3.5 3.5 3.5 3.5
3.3 3.3 3.3 3.3
4T-LM814849/LM814810 4T-34306/34478 4T-42690/42620 4T-495AS/493 4T-H715348/H715311
91 90 91 93 98
85 84 85 87 88
105 110 114 122 118
113 116 121 130 132
3.5 3.5 3.5 3.5 3.5
4T-661/653 4T-756A/752 4T-HH221431/HH221410
96 106 103
90 91 97
131 144 171
139 150 179
＃4T-JM515649/JM515610
94
88
117
4T-47681/47620 4T-496/493 4T-581/572 4T-740/742
95 95 96 101
89 89 90 91
4T-27687/27620 4T-47686/47620 4T-HM516448/HM516410 4T-495/493 4T-580/572 4T-582/572 4T-663/653 4T-749A/742 4T-595/592A 4T-663/652 4T-757/752 4T-6559C/6535 4T-842/832
96 97 105 97 98 104 99 99 100 99 100 104 101
4T-27689/27620 4T-27690/27620 4T-27691/27620
90 96 102
a
Mass kg
e
Y2
Yo
14.8 12.8 – 0.51 14.4
0.36 0.40 0.73 0.33
1.66 1.50 0.82 1.79
0.91 0.82 0.45 0.99
4.26 5.44 6.57 8.69
3.3 2 3.3 3.3 3.3
–2.31 –1.21 2.8 0.7 8.7
0.51 0.45 0.42 0.44 0.47
1.18 1.33 1.43 1.35 1.27
0.65 0.73 0.79 0.74 0.70
0.932 0.943 1.41 1.78 2.84
3.5 8 3.5
3.3 3.3 3.3
8.0 12.0 14.4
0.41 0.34 0.33
1.47 1.76 1.79
0.81 0.97 0.99
2.91 4.55 8.52
125
3
2.5
4.9
0.39
1.54
0.85
1.73
119 122 125 134
128 130 133 142
3.5 3.5 3.5 5
3.3 3.3 3.3 3.3
3.9 0.7 5.5 12.0
0.40 0.44 0.40 0.33
1.48 1.35 1.49 1.84
0.82 0.74 0.82 1.01
1.78 1.69 2.26 3.43
89 90 92 90 91 91 92 93 93 92 94 98 94
115 119 118 122 125 125 131 134 135 134 144 141 149
120 128 128 130 133 133 139 142 144 141 150 154 155
3.5 3.5 6.8 3.5 3.5 6.8 3.5 3.5 3.5 3.5 3.5 3.5 3.5
1.5 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
– 0.61 3.9 7.5 0.7 5.5 5.5 8.0 12.0 2.6 8.0 12.0 12.8 18.5
0.42 0.40 0.40 0.44 0.40 0.40 0.41 0.33 0.44 0.41 0.34 0.40 0.30
1.44 1.48 1.49 1.35 1.49 1.49 1.47 1.84 1.36 1.47 1.76 1.50 2.00
0.79 0.82 0.82 0.74 0.82 0.82 0.81 1.01 0.75 0.81 0.97 0.82 1.10
1.07 1.72 2.16 1.64 2.2 2.19 2.78 3.37 3.02 3.15 4.42 5.09 5.46
90 90 90
115 115 115
120 120 120
0.8 3.5 6.4
1.5 1.5 1.5
– 0.61 – 0.61 – 0.61
0.42 0.42 0.42
1.44 1.44 1.44
0.79 0.79 0.79
1.06 1.05 1.04
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 1 "−" means that load center at outside on end of inner ring.
B-185
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 84.138∼95.000mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
84.138
136.525
30.162
29.769
22.225
129
189
13,200
19,300
2,600
3,500
85.000
130.000 140.000
30.000 39.000
29.000 38.000
24.000 31.500
135 197
214 297
13,700 20,100
21,900 30,500
2,600 2,500
3,500 3,400
85.026
150.089
44.450
46.672
36.512
261
360
26,600
37,000
2,400
3,200
85.725
133.350 142.138 146.050 152.400 161.925
30.162 42.862 41.275 39.688 47.625
29.769 42.862 41.275 36.322 48.260
22.225 34.133 31.750 30.162 38.100
129 216 206 180 270
189 350 295 279 385
13,200 22,000 21,000 18,300 27,500
19,300 35,500 30,000 28,400 39,000
2,600 2,500 2,500 2,300 2,300
3,500 3,300 3,300 3,100 3,100
87.960
148.430
28.575
28.971
21.433
138
215
14,100
21,900
2,300
3,100
88.900
121.442 123.825 148.430 152.400 161.925 161.925 168.275
15.083 20.638 28.575 39.688 47.625 53.975 53.975
15.083 20.638 28.971 36.322 48.260 55.100 56.363
11.112 16.670 21.433 30.162 38.100 42.862 41.275
56.5 80.0 138 180 270 310 340
88.0 141 215 279 385 460 460
5,750 8,150 14,100 18,300 27,500 31,500 34,500
9,000 14,400 21,900 28,400 39,000 47,000 46,500
2,700 2,700 2,300 2,300 2,300 2,300 2,200
3,600 3,500 3,100 3,100 3,100 3,000 3,000
89.974
146.975
40.000
40.000
32.500
227
340
23,200
34,500
2,400
3,200
90.000
145.000 155.000 190.000
35.000 44.000 50.800
34.000 44.000 46.038
27.000 35.500 31.750
189 270 281
279 385 365
19,300 27,500 28,700
28,400 39,000 37,000
2,400 2,300 1,800
3,200 3,100 2,400
90.488
161.925
47.625
48.260
38.100
270
385
27,500
39,000
2,300
3,100
92.075
146.050 152.400 168.275
33.338 39.688 41.275
34.925 36.322 41.275
26.195 30.162 30.162
163 180 222
266 279 340
16,700 18,300 22,700
27,100 28,400 35,000
2,400 2,300 2,100
3,100 3,100 2,800
93.662
148.430
28.575
28.971
21.433
138
215
14,100
21,900
2,300
3,100
95.000
150.000
35.000
34.000
27.000
180
279
18,300
28,400
2,300
3,100
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision types, Class 4 and 2.
B-186
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
a
da
db
Da
Db
98
91
122
130
3.5
3.3
104 100
92 94
117 125
125 134
6 3
4T-749/742
101
95
134
142
4T-497/492A 4T-HM617049/HM617010 4T-665/653 4T-596/592A 4T-758/752
99 106 102 102 103
93 95 95 96 97
120 125 131 135 144
4T-42346/42584
103
98
4T-LL217849/LL217810 4T-L217849/L217810 4T-42350/42584 4T-593/592A 4T-759/752 4T-6580/6535 4T-850/832
97 97 104 104 106 109 106
4T-HM218248†/HM218210††
Mass kg
e
Y2
Yo
0.7
0.44
1.35
0.74
1.6
2.5 2.5
0.2 5.9
0.44 0.41
1.35 1.47
0.74 0.81
1.37 2.3
3.5
3.3
12.0
0.33
1.84
1.01
3.25
128 137 139 144 150
3.5 4.8 3.5 3.5 3.5
3.3 3.3 3.3 3.3 3.3
0.7 6.9 8.0 2.6 12.0
0.44 0.43 0.41 0.44 0.34
1.35 1.39 1.47 1.36 1.76
0.74 0.76 0.81 0.75 0.97
1.43 2.69 2.65 2.9 4.26
134
142
3
3
– 3.01
0.49
1.22
0.67
1.99
94 94 98 98 99 102 100
115 116 134 135 144 141 149
117 119 142 144 150 154 155
1.5 1.5 3 3.5 3.5 3.5 3.5
1.5 1.5 3 3.3 3.3 3.3 3.3
– 2.91 – 0.71 – 3.01 2.6 12.0 12.8 18.5
0.33 0.33 0.49 0.44 0.34 0.40 0.30
1.81 1.82 1.22 1.36 1.76 1.50 2.00
1.00 1.00 0.67 0.75 0.97 0.82 1.10
0.452 0.737 1.96 2.78 4.09 4.73 5.08
112
99
133
141
7
3.5
8.6
0.33
1.80
0.99
2.55
105 106 120
99 100 112
131 140 162
139 148 179
3 3 3.5
2.5 2.5 3.3
2.0 10.1 –12.91
0.44 0.34 0.87
1.35 1.76 0.69
0.74 0.97 0.38
2.14 3.32 6.32
4T-760/752
107
101
144
150
3.5
3.3
12.0
0.34
1.76
0.97
4.01
4T-47890/47820 4T-598A/592A 4T-681/672
107 113 110
101 101 104
131 135 149
140 144 160
3.5 6.4 3.5
3.3 3.3 3.3
0.6 2.6 3.0
0.45 0.44 0.47
1.34 1.36 1.28
0.74 0.75 0.70
2.08 2.63 3.87
4T-42368/42584
107
102
134
142
3
3
– 3.01
0.49
1.22
0.67
1.8
109
104
135
143
3
2.5
1.7
0.44
1.36
0.75
2.19
4T-498/493 ＃4T-JM716648/JM716610 ＃4T-JHM516849/JHM516810
＃4T-JM718149/JM718110 ＃4T-JHM318448/JHM318410 ＃4T-J90354/J90748
＃4T-JM719149/JM719113
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 1 "−" means that load center at outside on end of inner ring.
B-187
(approx.)
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 95.250∼ 109.538mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
95.250
130.175 146.050 147.638 148.430 152.400 157.162 168.275 190.500
20.638 33.338 35.717 28.575 39.688 36.512 41.275 57.150
21.433 34.925 36.322 28.971 36.322 36.116 41.275 57.531
16.670 26.195 26.192 21.433 30.162 26.195 30.162 46.038
81.0 163 180 138 180 188 222 445
147 266 279 215 279 305 340 610
8,300 16,700 18,300 14,100 18,300 19,200 22,700 45,000
15,000 27,100 28,400 21,900 28,400 31,000 35,000 62,000
2,500 2,400 2,300 2,300 2,300 2,200 2,100 1,900
3,300 3,100 3,100 3,100 3,100 2,900 2,800 2,600
96.838
148.430 188.912
28.575 50.800
28.971 46.038
21.433 31.750
138 281
215 365
14,100 28,700
21,900 37,000
2,300 1,800
3,100 2,400
98.425
157.162 168.275
36.512 41.275
36.116 41.275
26.195 30.162
188 222
305 340
19,200 22,700
31,000 35,000
2,200 2,100
2,900 2,800
99.974
212.725
66.675
66.675
53.975
575
810
58,500
82,500
1,700
2,300
100.000
155.000
36.000
35.000
28.000
192
310
19,600
31,500
2,200
2,900
100.012
157.162
36.512
36.116
26.195
188
305
19,200
31,000
2,200
2,900
101.600
157.162 168.275 180.975 190.500 190.500 190.500 212.725 212.725
36.512 41.275 47.625 57.150 57.150 57.150 66.675 66.675
36.116 41.275 48.006 57.531 57.531 57.531 66.675 66.675
26.195 30.162 38.100 44.450 46.038 46.038 53.975 53.975
188 222 285 380 445 445 475 575
305 340 430 555 610 610 695 810
19,200 22,700 29,100 38,500 45,000 45,000 48,500 58,500
31,000 35,000 44,000 56,500 62,000 62,000 71,000 82,500
2,200 2,100 2,000 2,000 1,900 1,900 1,800 1,700
2,900 2,800 2,700 2,600 2,600 2,600 2,300 2,300
104.775
180.975
47.625
48.006
38.100
285
430
29,100
44,000
2,000
2,700
107.950
158.750 159.987 165.100 212.725
23.020 34.925 36.512 66.675
21.438 34.925 36.512 66.675
15.875 26.988 26.988 53.975
102 167 191 475
166 320 315 695
10,400 17,100 19,500 48,500
17,000 33,000 32,000 71,000
2,100 2,100 2,100 1,800
2,800 2,800 2,700 2,300
109.538
158.750
23.020
21.438
15.875
102
166
10,400
17,000
2,100
2,800
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision class types, Class 4 and 2. B-188
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
da
db
Da
Db
4T-L319249/L319210 4T-47896/47820 4T-594A/592XE 4T-42375/42584 4T-594/592A 4T-52375/52618 4T-683/672 4T-HH221440/HH221410
103 110 113 108 110 112 113 125
101 103 104 103 104 105 106 110
122 131 135 134 135 142 149 171
125 140 142 142 144 152 160 179
1.5 3.5 5 3 3.5 3.5 3.5 8
1.5 3.3 0.8 3 3.3 3.3 3.3 3.3
4T-42381/42584 4T-90381/90744
110 125
104 113
134 161
142 179
3.5 3.5
3 3.3
4T-52387/52618 4T-685/672
114 116
108 109
142 149
152 160
3.5 3.5
3.3 3.3
4T-HH224334†/HH224310
124
120
192
202
3.5
115
109
140
149
4T-52393/52618
116
109
142
4T-52400/52618 4T-687/672 4T-780/772†† 4T-861/854 4T-HH221449/HH221410 4T-HH221449A/HH221410 4T-941/932 4T-HH224335/HH224310
117 118 119 129 131 122 130 132
111 112 113 114 116 116 117 121
4T-782/772††
122
4T-37425/37625 4T-LM522546/LM522510 4T-56425/56650 4T-936/932 4T-37431/37625
＃4T-JM720249/JM720210
a
Mass kg
e
Y2
Yo
(approx.)
–1.01 0.6 2.6 –3.01 2.6 0.6 3.0 14.4
0.35 0.45 0.44 0.49 0.44 0.47 0.47 0.33
1.72 1.34 1.36 1.22 1.36 1.26 1.28 1.79
0.95 0.74 0.75 0.67 0.75 0.69 0.70 0.99
0.789 1.95 2.09 1.75 2.51 2.76 3.72 7.5
–3.01 –12.91
0.49 0.87
1.22 0.69
0.67 0.38
1.69 5.67
0.6 3.0
0.47 0.47
1.26 1.28
0.69 0.70
2.62 3.56
3.3
18.9
0.33
1.84
1.01
11.5
3
2.5
– 0.31
0.47
1.27
0.70
2.4
152
3.5
3.3
0.6
0.47
1.26
0.69
2.55
142 149 161 170 171 171 187 192
152 160 168 174 179 179 193 202
3.5 3.5 3.5 8 8 3.5 7 7
3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
0.6 3.0 8.1 15.3 14.4 14.4 19.7 18.9
0.47 0.47 0.39 0.33 0.33 0.33 0.33 0.33
1.26 1.28 1.56 1.79 1.79 1.79 1.84 1.84
0.69 0.70 0.86 0.99 0.99 0.99 1.01 1.01
2.48 3.4 5.11 7 7.06 7.06 11.2 11.3
116
161
168
3.5
3.3
8.1
0.39
1.56
0.86
4.92
122 122 123 137
115 116 117 122
143 146 149 187
152 154 159 193
3.5 3.5 3.5 8
3.3 3.3 3.3 3.3
–14.01 1.4 –2.01 19.7
0.61 0.40 0.50 0.33
0.99 1.49 1.21 1.84
0.54 0.82 0.66 1.01
1.37 2.37 2.69 10.7
123
116
143
152
3.5
3.3
–14.01
0.61
0.99
0.54
1.33
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 1 "−" means that load center at outside on end of inner ring.
B-189
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 109.987∼133.350mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
109.987
159.987
34.925
34.925
26.988
167
320
17,100
33,000
2,100
2,800
109.992
177.800
41.275
41.275
30.162
232
375
23,600
38,000
1,900
2,600
110.000
165.000 180.000
35.000 47.000
35.000 46.000
26.500 38.000
191 305
315 480
19,500 31,000
32,000 49,000
2,100 1,900
2,700 2,600
111.125
214.312
55.562
52.388
39.688
405
560
41,500
57,000
1,500
2,000
114.300
177.800 180.975 212.725 212.725 228.600
41.275 34.925 66.675 66.675 53.975
41.275 31.750 66.675 66.675 49.428
30.162 25.400 53.975 53.975 38.100
232 169 475 575 430
375 245 695 810 620
23,600 17,200 48,500 58,500 44,000
38,000 25,000 71,000 82,500 63,500
1,900 1,900 1,800 1,700 1,400
2,600 2,500 2,300 2,300 1,900
115.087
190.500
47.625
49.212
34.925
300
475
30,500
48,500
1,800
2,500
117.475
180.975
34.925
31.750
25.400
169
245
17,200
25,000
1,900
2,500
120.000
170.000
25.400
25.400
19.050
127
210
13,000
21,400
2,000
2,600
120.650
234.950
63.500
63.500
49.212
525
825
53,500
84,000
1,500
2,000
123.825
182.562
39.688
38.100
33.338
224
435
22,900
44,000
1,800
2,400
127.000
182.562 196.850 215.900 228.600 228.600 230.000 254.000
39.688 46.038 47.625 53.975 53.975 63.500 77.788
38.100 46.038 47.625 49.428 49.428 63.500 82.550
33.338 38.100 34.925 38.100 38.100 49.212 61.912
224 310 320 320 430 525 740
435 550 540 445 620 825 1,070
22,900 31,500 32,500 32,500 44,000 53,500 75,500
44,000 56,500 55,000 45,000 63,500 84,000 109,000
1,800 1,700 1,600 1,400 1,400 1,500 1,400
2,400 2,200 2,100 1,900 1,900 2,000 1,900
128.588
206.375
47.625
47.625
34.925
315
520
32,000
53,000
1,700
2,200
130.175
196.850 206.375
46.038 47.625
46.038 47.625
38.100 34.925
310 315
550 520
31,500 32,000
56,500 53,000
1,700 1,700
2,200 2,200
133.350
177.008
25.400
26.195
20.638
126
259
12,900
26,400
1,800
2,400
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. For the inner bore diameter of bearings with bearing numbers marked "†" (inner ring) or "††" (outer ring), this value applies only to high precision types, Class 4 and 2.
B-190
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
a
da
db
Da
Db
4T-LM522548/LM522510
133
118
146
154
8
3.3
4T-64433/64700
128
121
160
172
3.5
124 127
119 122
149 162
159 172
4T-H924045/H924010
139
131
186
4T-64450/64700 4T-68450/68712†† 4T-938/932 4T-HH224346/HH224310 4T-HM926740/HM926710
131 130 141 143 146
125 123 128 131 142
4T-71453/71750
133
4T-68462/68712††
Mass kg
e
Y2
Yo
1.4
0.40
1.49
0.82
2.24
3.3
–1.11
0.52
1.16
0.64
3.77
3 3
2.5 2.5
–3.01 6.0
0.50 0.41
1.21 1.48
0.66 0.81
2.52 4.61
205
3.5
3.3
– 6.81
0.67
0.89
0.49
8.18
160 163 187 192 200
172 172 193 202 219
3.5 3.5 7 7 3.5
3.3 3.3 3.3 3.3 3.3
–1.11 –5.41 19.7 18.9 –13.51
0.52 0.50 0.33 0.33 0.74
1.16 1.21 1.84 1.84 0.81
0.64 0.66 1.01 1.01 0.45
3.52 2.93 10.1 10.2 9.76
126
171
181
3.5
3.3
6.7
0.42
1.44
0.79
5.11
132
125
163
172
3.5
3.3
–5.41
0.50
1.21
0.66
2.78
132
127
156
163
3.3
3.3
–7.91
0.46
1.31
0.72
1.67
4T-95475/95925
149
137
209
217
6.4
3.3
14.0
0.37
1.62
0.89
4T-48286/48220
139
133
168
176
3.5
3.3
5.7
0.31
1.97
1.08
3.52
4T-48290/48220 4T-67388/67322 4T-74500/74850 4T-97500/97900 4T-HM926747/HM926710 4T-95500/95905 4T-HH228349/HH228310
141 144 148 151 156 154 164
135 138 141 144 143 142 148
168 180 196 197 200 207 223
176 189 208 213 219 217 234
3.5 3.5 3.5 3.5 3.5 6.4 9.7
3.3 3.3 3.3 3.3 3.3 3.3 6.4
0.31 0.34 0.49 0.74 0.74 0.37 0.32
1.97 1.74 1.23 0.81 0.81 1.62 1.87
1.08 0.96 0.68 0.45 0.45 0.89 1.03
3.33 5.1 7.05 8.43 8.83 12.9 19.5
4T-799/792
146
140
186
198
3.3
3.3
1.9
0.46
1.31
0.72
5.77
4T-67389/67322 4T-799A/792
146 148
141 142
180 186
189 198
3.5 3.5
3.3 3.3
6.3 1.9
0.34 0.46
1.74 1.31
0.96 0.72
4.87 5.65
4T-L327249/L327210
142
140
167
171
1.5
1.5
–3.71
0.35
1.72
0.95
1.7
＃4T-JM822049/JM822010 ＃4T-JHM522649/JHM522610
＃4T-JL724348/JL724314
5.7 6.3 –2.21 –13.41 –13.51 14.0 23.4
Note: 3. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40. 1 "−" means that load center at outside on end of inner ring.
B-191
(approx.)
12.6
●Tapered Roller Bearings Inch system sizes J system series T r1
C
r B d
D
a
d 133.350∼196.850mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
T
kN B
C
Cr
Limiting speeds static kgf
Cor
rpm
Cr
Cor
grease
oil
133.350
190.500 196.850 196.850 215.900 234.950
39.688 46.038 46.038 47.625 63.500
39.688 46.038 46.038 47.625 63.500
33.338 38.100 38.100 34.925 49.212
236 310 310 320 525
475 550 550 540 825
24,100 31,500 31,500 32,500 53,500
48,500 56,500 56,500 55,000 84,000
1,700 1,700 1,700 1,600 1,500
2,300 2,200 2,200 2,100 2,000
136.525
190.500 228.600
39.688 57.150
39.688 57.150
33.338 44.450
236 445
475 735
24,100 45,500
48,500 75,000
1,700 1,500
2,300 2,000
139.700
215.900 228.600 254.000
47.625 57.150 66.675
47.625 57.150 66.675
34.925 44.450 47.625
320 445 550
540 735 910
32,500 45,500 56,000
55,000 75,000 92,500
1,600 1,500 1,400
2,100 2,000 1,800
142.875
200.025 200.025
41.275 41.275
39.688 39.688
34.130 34.130
239 239
490 490
24,300 24,300
50,000 50,000
1,600 1,600
2,100 2,100
146.050
193.675 254.000
28.575 66.675
28.575 66.675
23.020 47.625
165 550
340 910
16,800 56,000
35,000 92,500
1,600 1,400
2,200 1,800
152.400
192.088 222.250
25.000 46.830
24.000 46.830
19.000 34.925
130 315
261 585
13,200 32,000
26,700 60,000
1,600 1,500
2,100 2,000
158.750
205.583 225.425
23.812 41.275
23.812 39.688
18.258 33.338
126 254
247 555
12,900 25,900
25,200 56,500
1,500 1,400
2,000 1,900
165.100
225.425
41.275
39.688
33.338
254
555
25,900
56,500
1,400
1,900
170.000
230.000
39.000
38.000
31.000
282
520
28,700
53,000
1,400
1,800
177.800
227.012 247.650
30.162 47.625
30.162 47.625
23.020 38.100
181 340
415 690
18,500 35,000
42,000 70,500
1,300 1,300
1,800 1,700
180.000
250.000
47.000
45.000
37.000
370
710
37,500
72,500
1,300
1,700
190.000
260.000
46.000
44.000
36.500
365
720
37,000
73,500
1,200
1,600
196.850
241.300
23.812
23.017
17.462
160
330
16,300
33,500
1,200
1,600
Note: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value. 2. Bearing numbers marked "＃" designate J-series bearings. The tolerances of these bearings is listed in Table 6.6 on page A-40.
B-192
●Tapered Roller Bearings
r1a
Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa Fr ≦e Fr ＞e X Y X Y 1 0 0.4 Y2 static Por＝0.5Fr＋YoFa
ra Da db
da Db
When Por＜Fr use Por＝Fr
For values of e, Y2 and Yo see the table below.
Bearing numbers
Abutment and fillet dimensions
Load Constant Axial center load factors mm
mm ras
r1as
max
max
da
db
Da
Db
4T-48385/48320 4T-67390/67322 4T-67391/67322 4T-74525/74850 4T-95525/95925
148 149 157 152 166
142 143 143 146 148
177 180 180 196 209
184 189 189 208 217
3.5 3.5 8 3.5 9.7
3.3 3.3 3.3 3.3 3.3
4T-48393/48320 4T-896/892
151 156
144 150
177 205
184 216
3.5 3.5
4T-74550/74850 4T-898/892 4T-99550/99100
158 160 170
151 153 156
196 205 227
208 216 238
4T-48684/48620 4T-48685/48620
166 158
151 151
185 185
4T-36690/36620 4T-99575/99100
155 175
153 162
4T-L630349/L630310 4T-M231648/M231610
162 178
4T-L432349/L432310 4T-46780/46720 4T-46790/46720
kg
e
Y2
Yo
4.0 6.3 6.3 –2.21 14.0
0.32 0.34 0.34 0.49 0.37
1.87 1.74 1.74 1.23 1.62
1.03 0.96 0.96 0.68 0.89
3.64 4.63 4.59 6.56 11.3
3.3 3.3
4.0 6.0
0.32 0.42
1.87 1.43
1.03 0.78
3.43 9.07
3.5 3.5 7
3.3 3.3 3.3
–2.21 6.0 12.1
0.49 0.42 0.41
1.23 1.43 1.47
0.68 0.78 0.81
6.05 8.76 14.3
193 193
8 3.5
3.3 3.3
3.1 3.1
0.34 0.34
1.78 1.78
0.98 0.98
3.85 3.89
182 227
188 238
1.5 7
1.5 3.3
– 5.01 12.1
0.37 0.41
1.63 1.47
0.90 0.81
2.27 13.5
158 163
183 207
187 213
2 8
2 1.5
–10.01 5.9
0.42 0.33
1.44 1.8
0.79 0.99
1.53 5.72
168 176
166 169
195 209
199 218
1.5 3.5
1.5 3.3
–9.81 –2.61
0.37 0.38
1.61 1.57
0.88 0.86
1.89 5.2
181
174
209
218
3.5
3.3
–2.61
0.38
1.57
0.86
4.69
184
178
217
224
3
2.5
– 4.71
0.38
1.57
0.86
4.37
188 194
186 188
214 229
221 240
1.5 3.5
1.5 3.3
–12.81 – 4.81
0.44 0.44
1.36 1.36
0.75 0.75
2.92 6.57
＃4T-JM736149/JM736110
196
190
232
243
3
2.5
–9.01
0.48
1.25
0.69
6.76
＃4T-JM738249/JM738210
206
200
242
252
3
2.5
–10.91
0.48
1.26
0.69
6.85
4T-LL639249/LL639210
205
203
232
236
1.5
1.5
–17.31
0.42
1.44
0.79
2.07
＃4T-JHM534149/JHM534110 4T-36990/36920 4T-67790/67720
1 "−" means that load center at outside on end of inner ring.
B-193
a
Mass
(approx.)
●Multi-Row Tapered Roller Bearings Outward facing type B1 C r1 r
D
d
a
d 40∼70mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
1
Limiting speeds static kgf
rpm
r1s min
Cr
Cor
Cr
Cor
grease
oil
1.5 1.5 2 2
0.6 0.6 0.6 0.6
105 136 132 157
134 187 171 204
10,700 13,900 13,500 16,000
13,700 19,100 17,400 20,800
4,100 4,100 3,200 3,700
5,500 5,500 4,200 4,900
37.5 43.5 41.5 49.5
1.5 1.5 2 2
0.6 0.6 0.6 0.6
116 141 165 191
157 200 218 251
11,800 14,300 16,800 19,500
16,000 20,400 22,200 25,600
3,700 3,700 2,800 3,300
4,900 4,900 3,800 4,400
49 55 64 64 90
39.5 43.5 43.5 51.5 71.5
1.5 1.5 2.5 2.5 2.5
0.6 0.6 0.6 0.6 0.6
132 150 194 227 315
186 218 260 305 465
13,500 15,300 19,800 23,200 32,000
18,900 22,200 26,600 31,000 47,500
3,400 3,400 2,600 3,000 3,000
4,500 4,500 3,500 4,000 4,000
55
100 100 120 120 120
51 60 70 70 97
41.5 48.5 49 57 76
2 2 2.5 2.5 2.5
0.6 0.6 0.6 0.6 0.6
160 186 226 266 370
221 269 305 360 550
16,300 18,900 23,100 27,100 37,500
22,600 27,400 31,500 36,500 56,000
3,100 3,100 2,400 2,700 2,700
4,100 4,100 3,100 3,700 3,700
60
110 110 130 130 130
53 66 74 74 104
43.5 54.5 51 59 81
2 2 3 3 3
0.6 0.6 1 1 1
180 223 258 310 420
249 330 350 420 625
18,300 22,700 26,300 31,500 42,500
25,400 33,500 36,000 43,000 64,000
2,800 2,800 2,200 2,500 2,500
3,800 3,800 2,900 3,400 3,400
65
120 120 140 140 140
56 73 79 79 108
46.5 61.5 53 63 84
2 2 3 3 3
0.6 0.6 1 1 1
211 273 297 350 470
295 410 410 475 700
21,500 27,800 30,500 35,500 47,500
30,000 42,000 41,500 48,500 71,500
2,600 2,600 2,000 2,300 2,300
3,500 3,500 2,700 3,100 3,100
70
125 125 150 150 150
59 74 83 83 116
48.5 61.5 57 67 92
2 2 3 3 3
0.6 0.6 1 1 1
225 285 330 395 530
325 440 460 545 805
23,000 29,000 33,500 40,000 54,000
33,000 45,000 46,500 55,500 82,500
2,400 2,400 1,900 2,200 2,200
3,200 3,200 2,500 2,900 2,900
d
D
B1
C
rs min
40
80 80 90 90
45 55 56 56
37.5 43.5 39.5 45.5
45
85 85 100 100
47 55 60 60
50
90 90 110 110 110
1 Minimum allowable dimension for chamfer dimension r or r1.
B-194
●Multi-Row Tapered Roller Bearings
Sb r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Db
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm
da
Db
Sb
ras
r1as
min
min
min
max
max
4T-430208X 4T-432208X 4T-430308DX 4T-430308
48.5 48.5 50 50
75 75 86.5 82
3.5 5.5 8 5
1.5 1.5 2 2
0.6 0.6 0.6 0.6
4T-430209 4T-432209 4T-430309DX 4T-430309
53.5 53.5 55 55
80 81 96 93
4.5 5.5 9 5
1.5 1.5 2 2
4T-430210 432210U 4T-430310DX 4T-430310 432310U
58.5 58.5 62 62 62
85 85 105 102 102
4.5 5.5 10 6 9
4T-430211X 432211U 4T-430311DX 430311XU 432311U
65 65 67 67 67
94 95 113 111 111
4T-430212X 432212U 4T-430312DX 430312U 432312U
70 70 74 74 74
4T-430213X 432213U 4T-430313DX 430313XU 432313U 4T-430214 432214U 4T-430314DX 430314XU 432314U
Axial load factors
Mass kg
e
Y1
Y2
Yo
38.5 43 64.5 44.5
0.37 0.37 0.83 0.35
1.80 1.80 0.82 1.96
2.68 2.68 1.22 2.91
1.76 1.76 0.80 1.91
0.929 1.18 1.56 1.61
0.6 0.6 0.6 0.6
42 46 70 47.5
0.40 0.40 0.83 0.35
1.67 1.67 0.82 1.96
2.48 2.48 1.22 2.91
1.63 1.63 0.80 1.91
1.04 1.27 2.11 2.11
1.5 1.5 2 2 2
0.6 0.6 0.6 0.6 0.6
44.5 47.5 75 51 62.5
0.42 0.42 0.83 0.35 0.35
1.61 1.61 0.82 1.96 1.96
2.39 2.39 1.22 2.91 2.91
1.57 1.57 0.80 1.91 1.91
1.18 1.36 2.65 2.72 3.98
4.5 5.5 10.5 6.5 10.5
2 2 2 2 2
0.6 0.6 0.6 0.6 0.6
47 51 83 55.5 66.5
0.40 0.40 0.83 0.35 0.35
1.67 1.67 0.82 1.96 1.96
2.48 2.48 1.22 2.91 2.91
1.63 1.63 0.80 1.91 1.91
1.55 1.85 3.42 3.48 5.05
103 104 124 120 120
4.5 5.5 11.5 7.5 11.5
2 2 2.5 2.5 2.5
0.6 0.6 1 1 1
49.5 56 88.5 59.5 71
0.40 0.40 0.83 0.35 0.35
1.67 1.67 0.82 1.96 1.96
2.48 2.48 1.22 2.91 2.91
1.63 1.63 0.80 1.91 1.91
1.99 2.49 4.22 4.31 6.29
75 75 79 79 79
113 115 133 130 130
4.5 5.5 13 8 12
2 2 2.5 2.5 2.5
0.6 0.6 1 1 1
53.5 61.5 94.5 64 74.5
0.40 0.40 0.83 0.35 0.35
1.67 1.67 0.82 1.96 1.96
2.48 2.48 1.22 2.91 2.91
1.63 1.63 0.80 1.91 1.91
2.49 3.33 5.16 5.32 7.55
80 80 84 84 84
118 119 142 140 140
5 6 13 8 12
2 2 2.5 2.5 2.5
0.6 0.6 1 1 1
57 64.5 101 67 80.5
0.42 0.42 0.83 0.35 0.35
1.61 1.61 0.82 1.96 1.96
2.39 2.39 1.22 2.91 2.91
1.57 1.57 0.80 1.91 1.91
2.67 3.56 6.23 6.37 9.28
B-195
a
Constant
(approx.)
●Multi-Row Tapered Roller Bearings Outward facing type B1 C r1 r
D
d
a
d 75∼105mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
1
Limiting speeds static kgf
rpm
r1s min
Cr
Cor
Cr
Cor
grease
oil
2 2 3 3 3
0.6 0.6 1 1 1
238 288 370 435 610
350 445 510 605 935
24,300 29,300 37,500 44,500 62,000
36,000 45,500 52,000 62,000 95,500
2,300 2,300 1,700 2,000 2,000
3,000 3,000 2,300 2,700 2,700
51.5 63.5 61 73 104
2.5 2.5 3 3 3
0.6 0.6 1 1 1
274 340 405 500 680
400 530 565 700 1,050
27,900 35,000 41,500 51,000 69,000
40,500 54,000 58,000 71,500 107,000
2,100 2,100 1,600 1,900 1,900
2,800 2,800 2,200 2,500 2,500
70 86 98 98 137
57 69 65 77 108
2.5 2.5 4 4 4
0.6 0.6 1 1 1
315 385 425 520 690
465 600 585 725 1,050
32,000 39,000 43,000 53,000 70,500
47,000 61,500 59,500 74,000 107,000
2,000 2,000 1,500 1,800 1,800
2,700 2,700 2,100 2,400 2,400
90
160 160 190 190 190
74 94 102 102 144
61 77 69 81 115
2.5 2.5 4 4 4
0.6 0.6 1 1 1
355 450 465 580 770
535 720 645 815 1,190
36,500 46,000 47,500 59,000 78,500
54,500 73,500 65,500 83,000 121,000
1,900 1,900 1,500 1,700 1,700
2,500 2,500 1,900 2,300 2,300
95
170 170 200 200 200
78 100 108 108 151
63 83 85 85 118
3 3 4 3 4
1 1 1 1 1
385 515 630 540 865
580 835 890 735 1,340
39,500 52,500 64,000 55,500 88,000
59,000 85,000 91,000 75,000 137,000
1,800 1,800 1,600 1,600 1,600
2,400 2,400 2,100 2,100 2,100
100
180 180 215 215 215
83 107 112 112 162
67 87 87 87 127
3 3 4 3 4
1 1 1 1 1
440 565 700 590 980
675 925 995 800 1,540
45,000 58,000 71,500 60,000 100,000
68,500 94,500 102,000 81,500 157,000
1,700 1,700 1,500 1,500 1,500
2,200 2,200 2,000 2,000 2,000
105
190 190 225
88 115 116
70 95 91
3 3 3
1 1 1
490 650 625
760 1,080 845
50,000 66,000 63,500
77,500 111,000 86,000
1,600 1,600 1,400
2,100 2,100 1,900
d
D
B1
C
rs min
75
130 130 160 160 160
62 74 87 87 125
51.5 61.5 59 69 99
80
140 140 170 170 170
64 78 92 92 131
85
150 150 180 180 180
1 Minimum allowable dimension for chamfer dimension r or r1. Note: When incorporating bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-196
●Multi-Row Tapered Roller Bearings
Sb r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Db
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm
Constant
Axial load factors
Mass kg
da
Db
Sb
ras
r1as
min
min
min
max
max
a
e
Y1
Y2
Yo
(approx.)
4T-430215 432215U 430315DU 430315XU 432315U
85 85 89 89 89
124 125 151 149 149
5 6 14 9 13
2 2 2.5 2.5 2.5
0.6 0.6 1 1 1
61.5 67 107 70.5 87.5
0.44 0.44 0.83 0.35 0.35
1.55 1.55 0.82 1.96 1.96
2.31 2.31 1.22 2.91 2.91
1.52 1.52 0.80 1.91 1.91
2.99 3.68 7.31 7.71 11.5
430216XU 432216XU 430316DU 430316XU 432316U
92 92 94 94 94
132 134 159 159 159
6 7 15.5 9.5 13.5
2 2 2.5 2.5 2.5
0.6 0.6 1 1 1
63 69.5 114 75.5 90.5
0.42 0.42 0.83 0.35 0.35
1.61 1.61 0.82 1.96 1.96
2.39 2.39 1.22 2.91 2.91
1.57 1.57 0.80 1.91 1.91
3.65 4.58 8.99 9.55 13.6
430217XU 432217XU 430317DU 430317XU 432317U
97 97 103 103 103
141 142 169 167 167
6.5 8.5 16.5 10.5 14.5
2 2 3 3 3
0.6 0.6 1 1 1
69 76 121 80 96
0.42 0.42 0.83 0.35 0.35
1.61 1.61 0.82 1.96 1.96
2.39 2.39 1.22 2.91 2.91
1.57 1.57 0.80 1.91 1.91
4.59 5.85 10.6 11.2 15.4
430218U 432218U 430318DU 430318U 432318U
102 102 108 108 108
150 152 180 177 177
6.5 8.5 16.5 10.5 14.5
2 2 3 3 3
0.6 0.6 1 1 1
73 81 127 84 100
0.42 0.42 0.83 0.35 0.35
1.61 1.61 0.82 1.96 1.96
2.39 2.39 1.22 2.91 2.91
1.57 1.57 0.80 1.91 1.91
5.66 7.35 12.5 12.9 18.2
430219XU 432219XU ＊430319XU 430319X 432319U
109 109 113 113 113
159 161 186 186 186
7.5 8.5 11.5 11.5 16.5
2.5 2.5 3 3 3
1 1 1 1 1
76.5 86.5 89 88.5 106
0.42 0.42 0.35 0.35 0.35
1.61 1.61 1.96 1.95 1.96
2.39 2.39 2.91 2.90 2.91
1.57 1.57 1.91 1.91 1.91
8.01 9.04 15.0 14.0 21.5
430220XU 432220XU ＊430320XU 430320X 432320U
114 114 118 118 118
168 171 200 200 200
8 10 12.5 12.5 17.5
2.5 2.5 3 3 3
1 1 1 1 1
81.5 92 92 93.5 113
0.42 0.42 0.35 0.35 0.35
1.61 1.61 1.96 1.95 1.96
2.39 2.39 2.91 2.90 2.91
1.57 1.57 1.91 1.91 1.91
8.11 10.7 18.4 16.5 26.5
430221XU 432221XU 430321X
119 119 123
178 180 209
9 10 12.5
2.5 2.5 3
1 1 1
86 97.5 96.5
0.42 0.42 0.35
1.61 1.61 1.95
2.39 2.39 2.90
1.57 1.57 1.91
9.73 13.1 19.6
B-197
●Multi-Row Tapered Roller Bearings Outward facing type B1 C r1 r
D
d
a
d 105∼140mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm C
oil
109,000 150,000
1,400 1,400
1,900 1,900
23,300 30,500 56,500 73,500 84,000 69,500 109,000 123,000
35,000 49,500 88,500 124,000 120,000 94,500 169,000 197,000
1,600 1,600 1,500 1,500 1,400 1,400 1,400 1,400
2,200 2,200 2,000 2,000 1,800 1,800 1,800 1,800
298 375 435 610 940 1,360 1,390 1,100 2,270
19,700 23,500 26,800 38,000 60,500 80,500 97,500 81,500 143,000
30,500 38,000 44,500 62,500 96,000 139,000 142,000 112,000 231,000
1,500 1,500 1,500 1,500 1,400 1,400 1,200 1,200 1,200
2,100 2,100 2,000 2,000 1,900 1,900 1,700 1,700 1,700
224 294 315 410 640 905 1,110
365 490 485 675 1,010 1,630 1,660
22,900 29,900 32,000 42,000 65,500 92,500 113,000
37,500 50,000 49,500 69,000 103,000 166,000 169,000
1,400 1,400 1,400 1,400 1,300 1,300 1,200
1,900 1,900 1,800 1,800 1,700 1,700 1,500
262 300 370 390 640 720 1,050 1,260 1,100
415 535 580 650 970 1,140 1,840 1,900 1,560
26,700 30,500 37,500 40,000 65,500 73,500 107,000 129,000 112,000
42,500 54,500 59,500 66,000 99,000 117,000 188,000 194,000 160,000
1,300 1,300 1,200 1,200 1,200 1,200 1,200 1,100 1,100
1,800 1,800 1,700 1,700 1,600 1,600 1,600 1,400 1,400
1 1
750 955
1,060 1,470
76,000 97,500
50 56 74 101 93 93 142 142
2.5 2.5 3 3 4 3 3 4
0.6 0.6 1 1 1 1 1 1
228 298 555 720 825 685 1,070 1,210
340 485 865 1,210 1,180 925 1,660 1,940
46 58 62 78 97 132 128 128 188
41 46 55 62 78 109 101 101 145
2.5 2.5 2.5 2.5 3 3 4 3 4
0.6 0.6 0.6 0.6 1 1 1 1 1
193 230 263 370 595 790 960 800 1,400
200 200 210 210 230 230 280
52 65 64 80 98 145 137
46 52 57 64 78.5 117.5 107.5
2.5 2.5 2.5 2.5 4 4 5
0.6 0.6 0.6 0.6 1 1 1.5
210 210 225 225 250 250 250 300 300
53 66 68 84 102 102 153 145 145
47 53 61 68 82.5 82.5 125.5 115.5 115.5
2.5 2.5 3 3 3 4 4 5 4
0.6 0.6 1 1 1 1 1 1.5 1.5
105
225 225
116 170
91 133
110
180 180 200 200 240 240 240 240
56 70 92 121 118 118 181 181
120
180 180 200 200 215 215 260 260 260
rpm grease
4 3
B1
140
kgf
Cr
D
rs min
1
r1s min
d
130
kN 1
Limiting speeds static
Cor
Cr
1 Minimum allowable dimension for chamfer dimension r or r1. Note: When incorporating bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-198
Cor
●Multi-Row Tapered Roller Bearings
Sb r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Db
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm
da
Db
Sb
ras
r1as
min
min
min
max
max
Constant
Axial load factors
Mass kg
a
e
Y1
Y2
Yo
(approx.)
＊430321XU 432321
123 119
209 208
12.5 18.5
3 2.5
1 1
96.5 117.5
0.35 0.35
1.96 1.96
2.91 2.90
1.91 1.91
21.0 30.2
413122 423122 430222XU 432222XU ＊430322U 430322 432322 ＊432322U
122 122 124 124 128 128 128 128
169 166 188 190 222 222 222 222
3 7 9 10 12.5 12.5 19.5 19.5
2 2 2.5 2.5 3 3 3 3
0.6 0.6 1 1 1 1 1 1
66.5 66.5 90 102 100 97.5 124 127
0.40 0.33 0.42 0.42 0.35 0.35 0.35 0.35
1.68 2.03 1.61 1.61 1.96 1.95 1.95 1.96
2.50 3.02 2.39 2.39 2.91 2.90 2.90 2.91
1.64 1.98 1.57 1.57 1.91 1.91 1.91 1.91
5.20 6.38 11.4 15.5 24.5 22.1 35.6 38.2
413024 423024 413124 423124 430224XU 432224XU 430324XU 430324X 432324U
132 132 132 132 134 134 138 138 138
171 170 184 188 203 204 239 239 239
2.5 6 3.5 8 9.5 11.5 13.5 13.5 21.5
2 2 2 2 2.5 2.5 3 3 3
0.6 0.6 0.6 0.6 1 1 1 1 1
59 66 76.5 76.5 98 112 107 106 130
0.37 0.37 0.43 0.37 0.44 0.44 0.35 0.35 0.35
1.80 1.80 1.57 1.80 1.55 1.55 1.96 1.95 1.96
2.69 2.69 2.34 2.69 2.31 2.31 2.91 2.90 2.91
1.76 1.76 1.53 1.76 1.52 1.52 1.91 1.91 1.91
3.85 4.41 7.24 8.96 13.6 18.9 30.5 29.4 47.0
413026 423026 413126 423126 430226XU 432226XU 430326XU
142 142 142 142 148 148 152
186 189 196 198 218 219 255
3 6.5 3.5 8 9.5 13.5 14.5
2 2 2 2 3 3 4
0.6 0.6 0.6 0.6 1 1 1.5
66 71.5 69 79.5 102 124 116
0.37 0.37 0.33 0.37 0.44 0.44 0.35
1.80 1.80 2.03 1.80 1.55 1.55 1.96
2.69 2.69 3.02 2.69 2.31 2.31 2.91
1.76 1.76 1.98 1.76 1.52 1.52 1.91
5.55 6.62 7.83 9.77 15.9 24.1 37.9
413028 423028 413128 423128 430228X ＊430228XU 432228XU ＊430328XU 430328X
152 152 154 154 158 158 158 162 162
199 197 210 209 237 237 238 273 272
3 6.5 3.5 8 9.5 9.5 13.5 14.5 14.5
2 2 2.5 2.5 3 3 3 4 4
0.6 0.6 1 1 1 1 1 1.5 1.5
68.5 75 73.5 88 106 107 131 123 123
0.37 0.37 0.33 0.37 0.43 0.44 0.44 0.35 0.35
1.80 1.84 2.03 1.80 1.57 1.55 1.55 1.96 1.95
2.69 2.74 3.02 2.69 2.34 2.31 2.31 2.91 2.90
1.76 1.80 1.98 1.76 1.53 1.52 1.52 1.91 1.91
5.88 7.11 9.18 11.8 18.0 19.9 30.1 46.6 44.4
B-199
●Multi-Row Tapered Roller Bearings Outward facing type B1 C r1 r
D
d
a
d 140∼190mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kgf
rpm
Cr
Cor
Cr
Cor
grease
oil
3 3 3 3 4 4 5 4
1 1 1 1 1 1 1.5 1.5
274 355 485 600 770 1,200 1,410 1,170
430 630 805 1,040 1,210 2,140 2,140 1,750
27,900 36,000 49,500 61,500 78,500 122,000 144,000 119,000
44,000 64,500 82,000 106,000 123,000 218,000 218,000 178,000
1,200 1,200 1,200 1,200 1,100 1,100 990 990
1,600 1,600 1,500 1,500 1,500 1,500 1,300 1,300
53 60 76 86 91 144 126 126
3 3 3 3 4 4 5 4
1 1 1 1 1 1 1.5 1.5
330 430 595 675 900 1,530 1,570 1,290
535 765 965 1,180 1,440 2,840 2,390 1,950
34,000 44,000 60,500 69,000 92,000 156,000 160,000 132,000
54,500 78,000 98,000 120,000 147,000 290,000 244,000 199,000
1,100 1,100 1,100 1,100 1,000 1,000 920 920
1,500 1,500 1,400 1,400 1,400 1,400 1,200 1,200
67 84 88 110 125 192
60 67 78 88 97 152
3 3 3 3 5 5
1 1 1 1 1.5 1.5
365 490 550 725 1,050 1,710
620 865 900 1,270 1,690 3,200
37,000 50,000 56,000 74,000 107,000 174,000
63,500 88,000 92,000 130,000 173,000 325,000
1,100 1,100 1,000 1,000 950 950
1,400 1,400 1,300 1,300 1,300 1,300
280 280 300 300 320 320
74 93 96 120 127 192
66 74 85 96 99 152
3 3 4 4 5 5
1 1 1.5 1.5 1.5 1.5
425 580 705 885 1,080 1,760
735 1,050 1,190 1,530 1,780 3,350
43,000 59,500 72,000 90,500 110,000 180,000
75,000 107,000 121,000 156,000 182,000 345,000
1,000 1,000 940 940 890 890
1,300 1,300 1,300 1,300 1,200 1,200
290 290 320 320 340 340 340
75 94 104 130 133 204 204
67 75 92 104 105 160 160
3 3 4 4 5 5 4
1 1 1.5 1.5 1.5 1.5 1.5
430 615 780 985 1,230 1,970 1,710
740 1,110 1,280 1,710 2,010 3,700 3,350
44,000 63,000 79,500 100,000 125,000 201,000 175,000
75,500 113,000 131,000 174,000 205,000 380,000 340,000
940 940 890 890 840 840 840
1,300 1,300 1,200 1,200 1,100 1,100 1,100
D
B1
150
225 225 250 250 270 270 320 320
56 70 80 100 109 164 154 154
50 56 71 80 87 130 120 120
160
240 240 270 270 290 290 340 340
60 75 86 108 115 178 160 160
170
260 260 280 280 310 310
190
1
r1s min
C
d
180
kN 1
Limiting speeds static
rs min
1 Minimum allowable dimension for chamfer dimension r or r1. Note: When incorporating bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-200
●Multi-Row Tapered Roller Bearings
Sb r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Db
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm
Constant
Axial load factors
Mass kg
da
Db
Sb
ras
r1as
min
min
min
max
max
a
e
Y1
Y2
Yo
(approx.)
＊413030 423030 413130 423130 430230U 432230XU ＊430330U 430330
164 164 164 164 168 168 172 172
213 212 231 234 255 254 292 292
3 7 4.5 10 11 17 17 17
2.5 2.5 2.5 2.5 3 3 4 4
1 1 1 1 1 1 1.5 1.5
73.5 79.5 82.5 96.5 114 139 132 135
0.37 0.37 0.33 0.37 0.44 0.44 0.35 0.37
1.80 1.80 2.03 1.80 1.55 1.55 1.96 1.80
2.69 2.69 3.02 2.69 2.31 2.31 2.91 2.69
1.76 1.76 1.98 1.76 1.52 1.52 1.91 1.76
6.66 8.76 14.3 18.0 24.4 37.3 55.4 52.8
413032 423032 413132E1 423132E1 430232U 432232U ＊430332XU 430332X
174 174 174 174 178 178 182 182
227 227 254 250 272 275 310 311
3.5 7.5 5 11 12 17 17 17
2.5 2.5 2.5 2.5 3 3 4 4
1 1 1 1 1 1 1.5 1.5
79 85.5 98.5 106 122 150 138 141
0.37 0.37 0.40 0.37 0.44 0.44 0.35 0.37
1.80 1.80 1.68 1.80 1.55 1.55 1.96 1.80
2.69 2.69 2.50 2.69 2.31 2.31 2.91 2.69
1.76 1.76 1.64 1.76 1.52 1.52 1.91 1.76
8.29 10.7 18.2 22.8 31.9 46.9 65.5 62.4
413034 423034 413134E1 423134E1 430234U 432234XU
184 184 184 184 192 192
242 244 260 260 288 293
3.5 8.5 5 11 14 20
2.5 2.5 2.5 2.5 4 4
1 1 1 1 1.5 1.5
86.5 93.5 104 109 132 160
0.37 0.37 0.40 0.37 0.44 0.44
1.80 1.80 1.68 1.80 1.55 1.55
2.69 2.69 2.50 2.69 2.31 2.31
1.76 1.76 1.64 1.76 1.52 1.52
11.6 14.3 19.5 24.7 38.0 58.2
413036E1 423036E1 413136E1 423136E1 430236U 432236U
194 194 198 198 202 202
260 262 280 279 297 305
4 9.5 5.5 12 14 20
2.5 2.5 3 3 4 4
1 1 1.5 1.5 1.5 1.5
94 102 111 119 139 165
0.37 0.37 0.40 0.37 0.45 0.45
1.80 1.80 1.68 1.80 1.50 1.50
2.69 2.69 2.50 2.69 2.23 2.23
1.76 1.76 1.64 1.76 1.47 1.47
15.9 19.0 24.6 31.4 39.4 60.6
413038E1 423038E1 413138 423138 430238U ＊432238U 432238
204 204 208 208 212 212 212
271 272 300 299 316 323 323
4 9.5 6 13 14 22 22
2.5 2.5 3 3 4 4 4
1 1 1.5 1.5 1.5 1.5 1.5
96 104 119 126 141 174 185
0.37 0.37 0.40 0.37 0.44 0.44 0.49
1.80 1.80 1.68 1.80 1.55 1.55 1.38
2.69 2.69 2.50 2.69 2.31 2.31 2.06
1.76 1.76 1.64 1.76 1.52 1.52 1.35
16.2 19.6 30.8 38.6 45.4 73.3 69.8
B-201
●Multi-Row Tapered Roller Bearings Outward facing type B1 C r1 r
D
d
a
d 190∼340mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kgf
rpm grease
oil
Cr
Cor
Cr
Cor
3 3 4 4 5 5 4
1 1 1.5 1.5 1.5 1.5 1.5
530 720 965 1,090 1,350 2,260 1,980
940 1,320 1,660 1,910 2,210 4,250 3,950
54,000 73,000 98,500 111,000 137,000 230,000 201,000
96,000 135,000 169,000 195,000 226,000 435,000 400,000
900 900 840 840 800 800 800
1,200 1,200 1,100 1,100 1,100 1,100 1,100
80 90 107 120
4 4 5 5
1.5 1.5 1.5 1.5
595 880 1,110 1,220
1,060 1,650 1,920 2,260
61,000 89,500 113,000 125,000
108,000 168,000 196,000 230,000
810 810 760 760
1,100 1,100 1,000 1,000
92 115 128 160
82 92 114 128
4 4 5 5
1.5 1.5 1.5 1.5
655 910 1,230 1,400
1,160 1,770 2,130 2,600
66,500 92,500 126,000 142,000
118,000 181,000 217,000 265,000
730 730 690 690
980 980 920 920
260
400 400 440 440
104 130 144 180
92 104 128 144
5 5 5 5
1.5 1.5 1.5 1.5
840 1,150 1,500 1,940
1,540 2,190 2,630 3,750
85,500 117,000 152,000 198,000
157,000 223,000 268,000 380,000
670 670 630 630
900 900 840 840
280
420 420 460 460
106 133 146 183
94 106 130 146
5 5 6 6
1.5 1.5 2 2
890 1,200 1,640 1,940
1,630 2,340 2,900 3,650
91,000 123,000 167,000 198,000
166,000 238,000 296,000 375,000
620 620 580 580
820 820 770 770
300
460 460 500 500
118 148 160 200
105 118 142 160
5 5 6 6
1.5 1.5 2 2
1,070 1,610 2,010 2,100
1,990 3,150 3,600 4,050
109,000 165,000 205,000 214,000
203,000 320,000 370,000 415,000
570 570 530 530
760 760 710 710
320
480 480 540 540
121 151 176 220
108 121 157 176
5 5 6 6
1.5 1.5 2 2
1,190 1,580 2,240 2,500
2,250 3,100 4,100 4,900
121,000 162,000 228,000 255,000
229,000 315,000 415,000 500,000
530 530 500 500
710 710 660 660
520
133
118
6
2
1,480
2,870
150,000
293,000
500
660
D
B1
310 310 340 340 360 360 360
82 103 112 140 142 218 218
73 82 100 112 110 174 174
220
340 340 370 370
90 113 120 150
240
360 360 400 400
200
340
rs min
1
r1s min
d
C
kN 1
Limiting speeds static
1 Minimum allowable dimension for chamfer dimension r or r1. Note: When incorporating bearings with bearing numbers marked with "＊", please consult NTN Engineering.
B-202
●Multi-Row Tapered Roller Bearings
Sb r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Db
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm
da
Db
Sb
ras
r1as
min
min
min
max
max
a
Constant
Axial load factors
Mass kg
e
Y1
Y2
Yo
(approx.)
413040E1 423040E1 413140 423140 430240U ＊432240U 432240
214 214 218 218 222 222 222
288 291 320 316 336 340 340
4.5 10.5 6 14 16 22 22
2.5 2.5 3 3 4 4 4
1 1 1.5 1.5 1.5 1.5 1.5
101 112 125 134 154 180 193
0.37 0.37 0.40 0.37 0.44 0.41 0.49
1.80 1.80 1.68 1.80 1.55 1.66 1.38
2.69 2.69 2.50 2.69 2.31 2.47 2.06
1.76 1.76 1.64 1.76 1.52 1.62 1.35
20.6 25.7 38.6 47.5 62.8 95.2 90.7
413044E1 423044E1 413144 423144
238 238 242 242
318 319 346 341
5 11.5 6.5 15
3 3 4 4
1.5 1.5 1.5 1.5
112 125 135 154
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
26.7 33.3 47.8 59.6
413048E1 423048E1 413148 423148
258 258 262 262
339 340.5 375 373
5 11.5 7 16
3 3 4 4
1.5 1.5 1.5 1.5
117 131 144 164
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
30.2 36.3 58.9 71.7
413052 423052 413152 423152
282 282 282 282
372 374 412 413
6 13 8 18
4 4 4 4
1.5 1.5 1.5 1.5
131 143 161 176
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
41.5 53.0 82.2 101
413056 423056 413156 423156
302 302 308 308
394 397 435 433
6 13.5 8 18.5
4 4 5 5
1.5 1.5 2 2
136 148 168 177
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
47.2 57.3 87.4 109
413060 423060 413160 423160
322 322 328 328
428 434 471 464
6.5 15 9 20
4 4 5 5
1.5 1.5 2 2
151 163 182 202
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
65.6 80.2 115 144
413064 423064 413164 423164
342 342 348 348
449 455 505 502
6.5 15 9.5 22
4 4 5 5
1.5 1.5 2 2
157 170 197 217
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
70.9 85.4 150 188
413068
368
488
7.5
5
2
170
0.37
1.8
2.69
1.76
89.2
B-203
●Multi-Row Tapered Roller Bearings Outward facing type B1 C r1 r
D
d
a
d 340∼480mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
1
Limiting speeds static kgf
rpm
r1s min
Cr
Cor
Cr
Cor
grease
oil
6 6 6
2 2 2
1,890 2,690 3,350
3,750 4,900 6,500
193,000 274,000 345,000
380,000 500,000 660,000
500 460 460
660 620 620
120 134 171 192
6 6 6 6
2 2 2 2
1,470 2,050 2,720 3,200
2,810 4,200 5,050 6,500
150,000 209,000 277,000 325,000
287,000 430,000 515,000 660,000
460 460 430 430
620 620 580 580
135 171 194 243
122 135 173 194
6 6 6 6
2 2 2 2
1,690 2,080 2,840 3,350
3,350 4,350 5,250 6,700
172,000 213,000 289,000 340,000
340,000 445,000 535,000 685,000
440 440 410 410
580 580 540 540
400
600 600 650 650
148 185 200 250
132 148 178 200
6 6 6 6
2 2 3 3
1,860 2,530 3,000 3,750
3,700 5,450 5,800 7,850
190,000 258,000 305,000 385,000
375,000 555,000 590,000 800,000
410 410 380 380
550 550 510 510
420
620 620 700 700
150 188 224 280
134 150 200 224
6 6 6 6
2 2 3 3
2,110 2,650 3,700 4,800
4,250 5,900 7,200 9,700
215,000 270,000 375,000 490,000
435,000 600,000 735,000 990,000
390 390 360 360
520 520 480 480
440
650 650 720 720
157 196 226 283
140 157 201 226
6 6 6 6
3 3 3 3
2,470 2,600 4,000 5,000
5,150 5,450 7,800 10,300
252,000 266,000 410,000 510,000
525,000 560,000 795,000 1,050,000
370 370 340 340
490 490 460 460
460
680 680 760 760
163 204 240 300
145 163 214 240
6 6 7.5 7.5
3 3 4 4
2,600 3,050 4,550 4,900
5,350 6,600 9,150 10,300
265,000 310,000 465,000 500,000
550,000 670,000 930,000 1,050,000
350 350 320 320
470 470 430 430
480
700 700 790 790
165 206 248 310
147 165 221 248
6 6 7.5 7.5
3 3 4 4
2,490 3,050 4,800 5,300
5,000 6,700 9,600 11,100
254,000 310,000 490,000 540,000
510,000 685,000 975,000 1,130,000
330 330 310 310
450 450 410 410
C
d
D
B1
340
520 580 580
165 190 238
133 169 190
360
540 540 600 600
134 169 192 240
380
560 560 620 620
rs min
1 Minimum allowable dimension for chamfer dimension r or r1.
B-204
●Multi-Row Tapered Roller Bearings
Sb r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Db
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm
da
Db
Sb
ras
r1as
min
min
min
max
max
a
Constant
Axial load factors
Mass kg
e
Y1
Y2
Yo
(approx.)
423068 413168 423168
368 368 368
489 544 542
16 10.5 24
5 5 5
2 2 2
184 213 237
0.37 0.40 0.40
1.80 1.68 1.68
2.69 2.50 2.50
1.76 1.64 1.64
113 188 235
413072 423072 413172 423172
388 388 388 388
507 509 561 560
7 17.5 10.5 24
5 5 5 5
2 2 2 2
176 192 219 240
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
92.7 120 199 248
413076 423076 413176 423176
408 408 408 408
528 529 583 578
6.5 18 10.5 24.5
5 5 5 5
2 2 2 2
183 196 225 249
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
95.9 126 210 262
413080 423080 413180 423180
428 428 428 428
564 564 610 610
8 18.5 11 25
5 5 5 5
2 2 2.5 2.5
194 210 232 256
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
105 163 236 294
413084 423084 413184 423184
448 448 448 448
586 583 655 659
8 19 12 28
5 5 5 5
2 2 2.5 2.5
200 220 258 287
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
135 172 317 394
413088 423088 413188 423188
468 468 468 468
614 614 675 678
8.5 19.5 12.5 28.5
5 5 5 5
2.5 2.5 2.5 2.5
208 229 263 288
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
160 198 330 412
413092 423092 413192 423192
488 488 496 496
646 644 714 712
9 20.5 13 30
5 5 6 6
2.5 2.5 3 3
217 239 276 305
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
179 225 395 493
413096 423096 413196 423196
508 508 516 516
665 664 743 738
9 20.5 13.5 31
5 5 6 6
2.5 2.5 3 3
223 246 281 329
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
1.76 1.76 1.64 1.64
189 236 442 548
B-205
●Multi-Row Tapered Roller Bearings Outward facing type B1 C r1 r
D
d
a
d 500mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
B1
500
720 720 830 830
167 209 264 330
kN 1
C
rs min
149 167 235 264
6 6 7.5 7.5
1
r1s min
Cr
3 3 4 4
2,610 3,050 5,200 6,400
kgf Cor
1 Minimum allowable dimension for chamfer dimension r or r1.
B-206
Limiting speeds static
5,400 6,900 10,500 14,000
Cr
266,000 315,000 530,000 650,000
rpm Cor
550,000 700,000 1,070,000 1,420,000
grease
oil
320 320 290 290
420 420 390 390
●Multi-Row Tapered Roller Bearings
Sb r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Db
da
Bearing numbers
4130/500 4230/500 4131/500 5E-4231/500G2
Abutment and fillet dimensions
Load center
mm
mm
da
Db
Sb
ras
r1as
min
min
min
max
max
686 683 780 773
9 21 14.5 33
5 5 6 6
2.5 2.5 3 3
528 528 536 536
B-207
a
230 250 296 331
Constant
Axial load factors
Mass kg
e
Y1
Y2
0.37 0.37 0.40 0.40
1.80 1.80 1.68 1.68
2.69 2.69 2.50 2.50
Yo
(approx.)
1.76 1.76 1.64 1.64
202 247 528 678
●Multi-Row Tapered Roller Bearings Inward facing type
C1 r r1 B D
d
a
d 110∼280mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
1
Limiting speeds static kgf
rpm
Cr
Cor
Cr
Cor
grease
oil
2
298
485
30,500
49,500
1,600
2,200
2.5 2.5
2 2
230 370
375 610
23,500 38,000
38,000 62,500
1,500 1,500
2,100 2,000
52 64
2.5 2.5
2 2
294 410
490 675
29,900 42,000
50,000 69,000
1,400 1,400
1,900 1,800
53 68
53 68
2.5 3
2 2.5
300 390
535 650
30,500 40,000
54,500 66,000
1,300 1,200
1,800 1,700
225 250
56 80
56 80
3 3
2.5 2.5
355 600
630 1,040
36,000 61,500
64,500 106,000
1,200 1,200
1,600 1,500
160
240 270
60 86
60 86
3 3
2.5 2.5
430 675
765 1,180
44,000 69,000
78,000 120,000
1,100 1,100
1,500 1,400
170
260 280
67 88
67 88
3 3
2.5 2.5
490 725
865 1,270
50,000 74,000
88,000 130,000
1,100 1,000
1,400 1,300
180
280 300
74 96
74 96
3 4
2.5 3
580 885
1,050 1,530
59,500 90,500
107,000 156,000
1,000 940
1,300 1,300
190
290 320
75 104
75 104
3 4
2.5 3
615 985
1,110 1,710
63,000 100,000
113,000 174,000
940 890
1,300 1,200
200
310 340
82 112
82 112
3 4
2.5 3
720 1,090
1,320 1,910
73,000 111,000
135,000 195,000
900 840
1,200 1,100
220
340 370
90 120
90 120
4 5
3 4
880 1,220
1,650 2,260
89,500 125,000
168,000 230,000
810 760
1,100 1,000
240
360 400
92 128
92 128
4 5
3 4
910 1,400
1,770 2,600
92,500 142,000
181,000 265,000
730 690
980 920
260
400 440
104 144
104 144
5 5
4 4
1,150 1,960
2,190 3,750
117,000 200,000
223,000 380,000
670 630
900 840
280
420
106
106
5
4
1,200
2,340
123,000
238,000
620
820
d
D
B
C1
r1s min
110
180
56
56
2.5
120
180 200
46 62
46 62
130
200 210
52 64
140
210 225
150
rs min
1 Minimum allowable dimension for chamfer dimension r or r1.
B-208
●Multi-Row Tapered Roller Bearings
Sa
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Da
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm Sa
r1as
ras
max
max
Da min
min
max
max
323122
124
170
160
8
2
2
323024 323124
134 134
170 190
164 175
8 8
2 2
323026 323126
144 144
190 200
184 185
8 8
323028 323128
155 156
200 213
190 200
323030 323130
165 168
213 238
323032 323132E1
175 178
323034 323134E1
da
Axial load factors
Mass kg
e
Y1
Y2
Yo
(approx.)
1
0.33
2.03
3.02
1.98
5.6
2 2
12 6.5
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
4.08 7.82
2 2
2 2
13.5 7.5
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
5.92 8.58
8 10
2 2.5
2 2
10 8
0.37 0.37
1.84 1.80
2.74 2.69
1.80 1.76
6.4 10.7
205 220
10 10
2.5 2.5
2 2
15.5 6.5
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
7.76 15.7
228 258
215 240
10 10
2.5 2.5
2 2
17.5 8
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
9.46 20
185 188
248 268
235 250
10 10
2.5 2.5
2 2
18 8.5
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
12.8 21.5
323036E1 323136E1
198 200
268 286
250 265
10 12
2.5 3
2 2.5
17 8
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
16.5 27.2
323038E1 323138
208 212
278 306
260 285
12 12
2.5 3
2 2.5
17.5 8.5
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
17.9 34
323040E1 323140
218 222
298 326
280 300
12 12
2.5 3
2 2.5
19 8.5
0.37 0.37
1.80 1.80
2.69 2.69
1.76 1.76
21.7 41.7
323044E1 323144
242 248
326 352
310 325
12 14
3 4
2.5 3
21.5 14
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
29.8 52.2
323048E1 323148
269 268
346 382
321.5 355
14 14
3 4
2.5 3
25.5 17
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
32.6 64.6
323052 323152
285 290
382 422
365 385
14 16
4 4
3 3
25 16.5
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
47.3 90
323056
305
402
385
16
4
3
29.5
0.37
1.80
2.69
1.76
51.2
B-209
a
Constant
●Multi-Row Tapered Roller Bearings Inward facing type
C1 r r1 B D
d
a
d 280∼500mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN
kgf
rpm grease
oil
Cor
Cr
Cor
5
1,940
3,650
198,000
375,000
580
770
5 6
4 5
1,610 2,100
3,150 4,050
165,000 214,000
320,000 415,000
570 530
760 710
121 176
5 6
4 5
1,580 2,500
3,100 4,900
162,000 255,000
315,000 500,000
530 500
710 660
133 190
133 190
6 6
5 5
1,890 3,350
3,750 6,500
193,000 345,000
380,000 660,000
500 460
660 620
540 600
134 192
134 192
6 6
5 5
2,050 3,200
4,200 6,500
209,000 325,000
430,000 660,000
460 430
620 580
380
560 620
135 194
135 194
6 6
5 5
2,080 3,350
4,350 6,700
213,000 340,000
445,000 685,000
440 410
580 540
400
600 650
148 200
148 200
6 6
5 6
2,530 3,750
5,450 7,850
258,000 385,000
555,000 800,000
410 380
550 510
420
620 700
150 224
150 224
6 6
5 6
2,650 4,800
5,900 9,700
270,000 490,000
600,000 990,000
390 360
520 480
440
650 720
157 226
157 226
6 6
6 6
2,600 5,000
5,450 10,300
266,000 510,000
560,000 1,050,000
370 340
490 460
460
680 760
163 240
163 240
6 7.5
6 7.5
3,050 4,900
6,600 10,300
310,000 500,000
670,000 1,050,000
350 320
470 430
480
700 790
165 248
165 248
6 7.5
6 7.5
3,050 5,300
6,700 11,100
310,000 540,000
685,000 1,130,000
330 310
450 410
500
720 830
167 264
167 264
6 7.5
6 7.5
3,050 6,400
6,900 14,000
315,000 650,000
700,000 1,420,000
320 290
420 390
d
D
B
280
460
146
146
6
300
460 500
118 160
118 160
320
480 540
121 176
340
520 580
360
rs min
1
Cr
C1
r1s min
1
Limiting speeds static
1 Minimum allowable dimension for chamfer dimension r or r1.
B-210
●Multi-Row Tapered Roller Bearings
Sa
r1a Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋YoFa For values of e, Y2 and Yo see the table below.
ra
Da
da
Bearing numbers
Abutment and fillet dimensions
Load center
mm
mm
Da
Sa
r1as
ras
min
max
max
16
5
4
425 440
16 16
4 5
462 518
440 480
16 18
370 380
498 558
480 515
323072 323172
395 400
518 578
323076 323176
415 420
323080 323180
da
Axial load factors
Mass kg
e
Y1
Y2
Yo
16
0.40
1.68
2.50
1.64
95.8
3 4
31 18
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
70.7 126
4 5
3 4
34 18.5
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
76.3 164
18 18
5 5
4 4
36 35.5
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
101 207
495 535
18 18
5 5
4 4
41 25.5
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
107 218
538 598
515 550
18 20
5 5
4 4
44.5 29
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
113 229
440 445
578 622
550 580
18 20
5 5
4 5
45 32.5
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
146 259
323084 323184
460 465
598 672
570 625
20 25
5 5
4 5
48.5 60
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
154 346
323088 323188
480 485
622 692
600 645
20 25
5 5
5 5
53.5 44
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
177 361
323092 323192
500 510
652 724
620 680
25 25
5 6
5 6
56.5 34.5
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
201 433
323096 323196
520 530
672 754
640 705
25 30
5 6
5 6
63 36
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
211 481
540 550
692 794
655 740
25 30
5 6
5 6
61.5 37.5
0.37 0.40
1.80 1.68
2.69 2.50
1.76 1.64
221 570
max
max
min
323156
315
438
400
323060 323160
330 335
442 478
323064 323164
350 355
323068 323168
3230/500 5E-3231/500G2
B-211
a
Constant
(approx.)
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 120∼187.325mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
B2
kN C2
r1s min
1
rs min
1
Cr
static kgf
Cor
Cr
Cor
120
170 210
124 174
124 174
2.5 2.5
2 2.5
390 855
1,020 1,710
40,000 87,500
104,000 174,000
120.650
174.625
141.288
139.703
0.8
1.5
510
1,220
52,000
124,000
127
182.562
158.750
158.750
1.5
3.3
660
1,730
67,000
177,000
130
184
134
134
2.5
2
480
1,190
49,000
122,000
135
180
160
160
1
2
500
1,360
51,000
138,000
136.525
190.500
161.925
161.925
1.5
3.3
695
1,900
71,000
193,000
139.700
200.025
157.165
160.340
0.8
3.3
700
1,950
71,500
199,000
140
198
144
144
2.5
2
575
1,460
58,500
149,000
146.050
244.475
192.088
187.325
1.5
3.3
955
1,980
97,000
202,000
150
212
155
155
3
2.5
660
1,700
67,500
173,000
152.400
222.250
174.625
174.625
1.5
1.5
930
2,350
94,500
239,000
160
226 265
165 173
165 173
3 2.5
2.5 2.5
775 1,100
2,030 2,270
79,000 112,000
207,000 231,000
165.100
225.425
165.100
168.275
0.8
3.3
745
2,220
76,000
226,000
170
240 280
175 181
175 181
3 2.5
2.5 2.5
835 1,150
2,200 2,420
85,500 117,000
224,000 247,000
177.800
247.650 279.400 304.800
192.088 234.950 238.227
192.088 234.947 233.365
1.5 1.5 3.3
3.3 3.3 3.3
1,000 1,420 1,580
2,760 3,400 3,100
102,000 145,000 161,000
281,000 345,000 320,000
180
254 300
185 280
185 280
3 3
2.5 3
910 2,160
2,390 4,800
93,000 220,000
244,000 490,000
187.325
269.875
211.138
211.138
1.5
3.3
1,240
3,400
127,000
345,000
1 Minimum allowable dimension for chamfer dimension r or r1.
B-212
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg
da
Da
Sa
(approx.)
135 140
155.5 190
5 4.5
8.97 22.2
129
163
3
11.5
137
168
4.5
14.3
E-625926
144.5
169
5
11.3
E-CRO-2701
143
165
2
13.5
＊T-E-48393D/48320/48320D
144
177
4
14.8
＊T-E-48680D/48620/48620D
150
185
3
17.3
156
183
5
14
163
225
6.5
36.8
167.5
195
5.5
16.9
165
207
4
24.7
177.5 184
208.5 247
5.5 4.5
20.2 33.6
175
209
3
20.7
187.5 192
220 255
5.5 5
24.4 44
190 195 198
229 251 279
5 5 7
29.4 55.3 69.9
200.5 201
233.5 274
5.5 5
28.9 69.4
199.9
250
4
41.8
E-625924 E-CRO-2418 ＊E-M224749D/M224710/M224710D ＊T-E-48290D/48220/48220D
E-625928 ＊E-81576D/81962/81963D E-625930 ＊T-E-M231649D/M231610/M231610D E-625932 E-CRO-3209 ＊E-46791D/46720/46721D E-625934 E-CRO-3409 ＊E-67791D/67720/67721D ＊E-82681D/82620/82620D ＊E-EE280700D/281200/281201D E-625936 E-CRO-3617 ＊E-M238849D/M238810/M238810D Note: 1. Bearing numbers marked "＊" designate inch system bearings.
B-213
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 190∼260mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN r1s min
kgf Cor
Cr
Cor
2.5 2.5 3.3
1,060 1,080 1,570
2,850 2,940 4,150
108,000 111,000 160,000
291,000 300,000 425,000
1.5
3.3
1,040
2,990
106,000
305,000
206 160 200
3 2.5 3
2.5 2.5 3
1,200 925 1,360
3,300 2,210 2,980
122,000 94,500 138,000
335,000 226,000 305,000
215.900
209.550
3.3
3.3
1,270
2,820
129,000
288,000
288.925
177.800
177.800
0.8
3.3
1,090
3,100
111,000
315,000
220
310
226
226
4
3
1,380
3,800
141,000
385,000
220.662
314.325
239.712
239.712
1.5
3.3
1,840
4,900
187,000
500,000
228.600
425.450
349.250
361.950
3.5
6.4
3,450
8,250
355,000
845,000
234.950
327.025
196.850
196.850
1.5
3.3
1,370
3,700
140,000
380,000
240
338
248
248
4
3
1,870
4,950
191,000
505,000
241.478
350.838
228.600
228.600
1.5
3.3
1,770
4,550
180,000
465,000
244.475
327.025 381.000
193.675 304.800
193.675 304.800
1.5 3.3
3.3 4.8
1,430 2,220
4,100 5,750
146,000 227,000
415,000 590,000
250
365 370
270 220
270 220
1.5 4
3 4
2,150 2,050
6,150 5,750
219,000 209,000
630,000 590,000
254
358.775 368.300 444.500
269.875 204.622 279.400
269.875 204.470 279.400
3.3 1.5 3.3
3.3 3.3 6.4
2,390 1,350 2,890
6,550 3,250 5,900
244,000 138,000 294,000
670,000 330,000 600,000
260
368 400
268 255
268 255
5 4
4 7.5
1,990 2,210
5,700 5,300
203,000 225,000
580,000 540,000
D
B2
190
268 270 292.100
196 190 225.425
196 190 225.425
3 2.5 1.5
190.500
266.700
187.325
188.912
200
282 290 310
206 160 200
203.200
317.500
215.900
1 Minimum allowable dimension for chamfer dimension r or r1.
B-214
rs min
1
Cr
d
C2
1
static
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg Sa
(approx.)
245.5 250 271
6 6 5
34.7 34.7 59.6
204
246
3
33.6
219.5 221 222
258 271 284
6 5 6
40.5 35.1 48.4
＊E-EE132082D/132125/132126D
224
294
9.5
62.5
＊E-LM742749D/LM742714/LM742714D
227
267
5
34.3
242
284.5
6
53.5
＊T-E-M244249D/M244210/M244210D
235
293
4
60.2
＊E-EE700090D/700167/700168D
263
381
3
250
305
5
53.6
260.5
312
6
70
＊E-EE127097D/127137/127137D
262
325
6.5
76.4
＊E-LM247748D/LM247710/LM247710DA ＊E-EE126096D/126150/126151D
257 262
310 343
5 6.5
46.1 132
275 276
339 344
5 6
82.1 87
272.5 269 289
335 340 406
5 6 8
85.6 71.8 185
287 290
338.5 359
6 8
90.3 106
E-625938 E-CRO-3812 ＊E-M241538D/M241510/M241510D ＊T-E-67885D/67820/67820D E-625940 E-CRO-4013 E-CRO-4014
E-625944
＊T-E-8576D/8520/8520D E-625948A
E-CRO-5004 E-CRO-5001 ＊T-E-M249748D/M249710/M249710D ＊E-EE171000D/171450/171451D ＊E-EE822101D/822175/822176D E-625952 E-CRO-5215 Note: 1. Bearing numbers marked "＊" designate inch system bearings.
B-215
da
Da
209 205 222
232
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 260.350∼304.800mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN r1s min
kgf Cor
Cr
Cor
6.4 6.4 3.3
1,750 2,090 2,980
4,550 4,950 7,100
178,000 213,000 305,000
465,000 505,000 725,000
1.5 3.3
3.3 6.4
1,840 2,110
5,350 6,000
188,000 216,000
545,000 610,000
282.575
3.3
3.3
2,470
6,850
252,000
700,000
222
222
4
4
1,910
4,550
195,000
465,000
385
200
200
3
3
1,610
4,250
165,000
435,000
276.225
406.400
268.290
260.355
1.5
6.4
2,110
6,000
216,000
610,000
279.400
469.900
346.075
349.250
6.4
3.3
3,500
8,700
355,000
885,000
279.578
380.898
244.475
244.475
1.5
3.3
1,950
6,200
199,000
635,000
280
395
288
288
5
4
2,560
7,100
261,000
725,000
285.750
380.898
244.475
244.475
1.5
3.3
1,950
6,200
199,000
635,000
288.925
406.400
298.450
298.450
3.3
3.3
2,980
8,300
305,000
850,000
292.100
476.250
296.047
292.100
1.5
3.3
3,050
6,800
310,000
695,000
300
424 460 470 470
310 360 270 292
310 360 270 292
5 4 4 4
4 4 4 4
2,570 4,050 3,200 3,500
7,450 10,100 7,250 8,300
262,000 415,000 325,000 360,000
760,000 1,030,000 740,000 845,000
300.038
422.275
311.150
311.150
3.3
3.3
3,350
9,600
340,000
980,000
304.648
438.048 438.048
279.400 280.990
279.400 279.400
3.3 3.3
3.3 4.8
2,470 2,630
6,500 6,900
252,000 268,000
665,000 700,000
304.800
419.100 444.500
269.875 247.650
269.875 241.300
1.5 8
6.4 1.5
2,390 1,850
6,850 4,600
244,000 188,000
695,000 470,000
D
B2
260.350
365.125 400.050 422.275
228.600 255.588 314.325
228.600 253.995 317.500
3.3 1.5 6.4
266.700
355.600 393.700
230.188 269.878
228.600 269.878
269.875
381.000
282.575
270
410
275
1 Minimum allowable dimension for chamfer dimension r or r1.
B-216
rs min
1
Cr
d
C2
1
static
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg
da
Da
Sa
(approx.)
282 292 290
340 367 392
6.5 8 5.5
76.5 117 180
281 292
335 367
6.5 5
62 116
290
356
6
97.5
E-CRO-5403
305
382
6
91
E-CRO-5501
300
355
6
62.5
＊E-EE275109D/275160/275161D
293.6
366
8
122
＊E-EE722111D/722185/722186D
316
432
5
258
297
356
5
304.5
363.5
7
302
356
5
＊E-M255449D/M255410/M255410D
310
379
5
125
＊E-EE921150D/921875/921876D
321
441
7
208
E-625960 E-CRO-6015 ☆E-CRO-6012 ☆E-CRO-6013
329 330 338 336
389.5 427 438 437
7 10 7 7
138 180 152 164
322
394
6
143
＊E-EE329119D/329172/329173D ＊E-M757448D/M757410/M757410D
328 328
409 407
8 7
143 140
＊E-M257149D/M257110/M257110D ＊E-EE291202D/291750/291751D
322 328
392 416
5 9.5
115 127
＊E-EE134102D/134143/134144D ＊E-EE221027D/221575/221576D ＊E-HM252349D/HM252310/HM252310D ＊T-E-LM451349D/LM451310/LM451310D ＊E-EE275106D/275155/275156D ＊E-M252349D/M252310/M252310D
＊T-E-LM654644D/LM654610/LM654610D E-625956 ＊T-E-LM654648D/LM654610/LM654610D
☆＊T-E-HM256849D/HM256810/HM256810DG2
Note: 1. Bearing numbers marked "＊" designate inch system bearings. 2. Bearing numbers marked "☆" designate bearing with hollow rollers and pin type cages.
B-217
83.2 111 77.9
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 304.800∼360mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN r1s min
kgf Cor
Cr
Cor
6.4
3,650
9,400
370,000
960,000
3.3
3.3
2,610
7,450
267,000
760,000
279.400
3.3
4.8
2,630
6,900
268,000
700,000
269.875 327.025
269.875 327.025
1.5 3.3
3.3 3.3
2,260 2,820
7,050 8,600
231,000 287,000
715,000 880,000
460
338
338
5
4
2,940
8,650
300,000
880,000
330
470 510
340 340
340 340
2.5 6
2.5 6
3,150 3,900
10,200 9,650
320,000 395,000
1,040,000 985,000
330.200
482.600
306.388
311.150
1.5
3.3
2,810
7,900
287,000
805,000
333.375
469.900
342.900
342.900
3.3
3.3
4,000
11,000
405,000
1,130,000
340
480
350
350
6
5
3,450
10,400
350,000
1,060,000
341.312
457.098
254.000
254.000
1.5
3.3
2,370
6,900
241,000
705,000
342.900
533.400
307.985
301.625
3.3
3.3
3,150
6,900
320,000
705,000
343.052
457.098
254.000
254.000
1.5
3.3
2,370
6,900
241,000
705,000
346.075
488.950
358.775
358.775
3.3
3.3
4,350
12,700
445,000
1,300,000
347.662
469.900
292.100
292.100
3.3
3.3
3,200
9,100
325,000
925,000
355
490
316
316
1.5
3.3
3,500
10,000
355,000
1,020,000
355.600
444.500 457.200 482.600 488.950
241.300 252.412 265.112 317.500
241.300 252.412 269.875 317.500
1.5 1.5 1.5 1.5
3.3 3.3 3.3 3.3
1,760 2,470 2,790 3,500
6,200 7,850 7,650 10,000
180,000 251,000 285,000 350,000
635,000 800,000 780,000 1,020,000
360
508 600
370 540
370 540
6 5
5 5
3,700 6,700
11,200 18,100
380,000 685,000
1,140,000 1,840,000
D
B2
304.800
495.300
342.900
349.250
3.3
304.902
412.648
266.700
266.700
305.003
438.048
280.990
317.500
422.275 447.675
320
1 Minimum allowable dimension for chamfer dimension r or r1.
B-218
rs min
1
Cr
d
C2
1
static
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg
da
Da
＊E-EE724121D/724195/724196D
330
450
3
273
＊E-M257248D/M257210/M257210D
325
388
5
107
＊E-M757449D/M757410/M757410D
328
407
7
139
＊E-LM258649D/LM258610/LM258610D ＊E-HM259049D/HM259010/HM259010D
333.3 339.6
398 418
7 5
110 170
E-625964
355
420.5
7
183
E-CRO-6604 E-CRO-6602
366 366
440 469
5.5 5
141 221
＊E-EE526131D/526190/526191D
351
448
3
197
＊E-HM261049D/HM261010/HM261010D
357
439
5
187
373
440
7
200
＊E-LM761648D/LM761610/LM761610D
359
432
5
125
＊E-EE971355D/972100/972103D
378
502
11
252
＊E-LM761649D/LM761610/LM761610D
361
432
5
117
371
456
6
227
369
443
8
148
378
450
7
170
370 372 375 374
422 434 453 459
6.5 6 3 5
89.5 106 145 173
394 400
466.5 550
7 8
236 520
E-625968
☆＊E-HM262749D/HM262710/HM262710DG2 ＊E-M262449D/M262410/M262410D E-CRO-7105 ＊E-L163149D/L163110/L163110D ＊E-LM263149D/LM263110/LM263110D ＊E-LM763449D/LM763410/LM763410D ＊E-M263349D/M263310/M263310D E-625972 E-CRO-7210
Note: 1. Bearing numbers marked "＊" designate inch system bearings. 2. Bearing numbers marked "☆" designate bearing with hollow rollers and pin type cages.
B-219
Sa
(approx.)
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 368.300∼447.675mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN r1s min
kgf Cor
Cr
6.4
4,450
13,100
455,000
1,330,000
1.5
3.3
2,360
6,250
241,000
640,000
390 285
6 5
5 5
4,900 3,250
14,100 7,700
500,000 330,000
1,440,000 785,000
400.050
400.050
3.3
6.4
5,400
16,100
550,000
1,640,000
514.350
317.500
317.500
3.3
3.3
3,650
11,100
370,000
1,130,000
393.700
546.100
288.925
288.925
1.5
6.4
3,200
10,200
325,000
1,040,000
395
545
268.7
288.7
4
7.5
2,970
8,650
305,000
880,000
400
560 564
380 412
380 412
5 6
5 5
4,800 4,850
14,100 14,700
490,000 495,000
1,440,000 1,500,000
406.400
546.100 590.550 609.600
288.925 400.050 309.562
288.925 400.050 317.500
1.5 3.3 3.5
6.4 6.4 6.4
3,200 4,850 3,700
10,200 13,600 9,600
325,000 490,000 380,000
1,040,000 1,380,000 980,000
409.575
546.100
334.962
334.962
1.5
6.4
4,100
12,700
415,000
1,290,000
415.925
590.550
434.975
434.975
3.3
6.4
6,300
18,900
640,000
1,930,000
420
592 650
432 460
432 460
6 5
5 5
5,350 6,950
16,300 18,300
545,000 710,000
1,660,000 1,870,000
431.800
571.500 571.500
279.400 336.550
279.400 336.550
1.5 1.5
3.3 6.4
3,050 3,700
9,300 11,800
315,000 380,000
950,000 1,200,000
432.003
609.524
317.500
317.500
3.5
6.4
4,350
11,500
445,000
1,170,000
440
620 650 650
454 355 460
454 355 460
6 4 6
6 7.5 6
6,500 5,350 6,750
19,900 13,400 20,700
665,000 545,000 690,000
2,030,000 1,370,000 2,110,000
447.675
635.000
463.550
463.550
3.3
6.4
7,100
22,100
725,000
2,260,000
D
B2
368.300
523.875
382.588
382.588
3.3
374.650
501.650
250.825
260.350
380
536 560
390 285
384.175
546.100
385.762
1 Minimum allowable dimension for chamfer dimension r or r1.
B-220
rs min
1
Cr
d
C2
1
static
Cor
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg
da
Da
Sa
(approx.)
393.7
487
6
280
393
472
2
145
410 417
495 525
8 7
277 208
411
507
6.5
328
＊E-LM665949D/LM665910/LM665910D
409
482
7
240
＊E-LM767745D/LM767710/LM767710D
418
510
6.5
219
E-CRO-7901
434
508
3
200
☆E-CRO-8005 E-625980
426 434
510 518.5
8 7
300 324
＊E-LM767749D/LM767710/LM767710D ＊E-EE833161D/833232/833233D ＊E-EE911603D/912400/912401D
427 448 441
510 549 568
6.5 6.5 1.5
201 395 332
☆＊E-M667947D/M667911/M667911DG2
431
510
5.5
226
☆＊T-E-M268749D/M268710/M268710DG2
444
549
9
421
457 455
545 593
7 8
374 600
453 453
537 534
8 6.5
198 232
＊E-EE736173D/736238/736239D
464
572
6.5
297
E-625988 ☆E-CRO-8807 E-CRO-8806
479 484 483
572.5 607 595
478
591
☆＊E-HM265049D/HM265010/HM265010DG2 ＊E-LM765149D/LM765110/LM765110D E-625976 E-CRO-7612 ☆＊E-HM266449D/HM266410/HM266410DG2
E-625984 E-CRO-8402 ☆＊E-LM869449D/LM869410/LM869410DG2 ＊E-LM769349D/LM769310/LM769310D
☆＊E-M270749D/M270710/M270710DAG2
Note: 1. Bearing numbers marked "＊" designate inch system bearings. 2. Bearing numbers marked "☆" designate bearing with hollow rollers and pin type cages.
B-221
8 9 11
430 400 600
8
509
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 457.200∼571.500mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN r1s min
kgf Cor
Cr
3.3 6.4
3,350 4,150
10,300 11,200
360,000 425,000
1,060,000 1,140,000
6
6
6,500
19,900
665,000
2,030,000
450
3
5
6,300
20,400
645,000
2,080,000
494 390
494 390
6 6
6 6
6,250 4,700
19,600 13,400
640,000 480,000
2,000,000 1,370,000
615.950
330.200
330.200
3.3
6.4
4,000
13,400
405,000
1,370,000
488.950
660.400
365.125
361.950
8
6.4
4,700
15,400
480,000
1,570,000
489.026
634.873
320.675
320.675
3.3
3.3
3,650
12,000
370,000
1,220,000
500
670 690 705 730
515 480 515 440
515 480 515 440
1.5 5 6 6
5 5 6 6
6,900 6,000 8,450 7,200
24,600 19,900 27,100 20,600
700,000 610,000 860,000 735,000
2,510,000 2,020,000 2,760,000 2,100,000
501.650
711.200
520.700
520.700
3.3
6.4
8,650
27,300
885,000
2,790,000
514.350
673.100
422.275
422.275
3.3
6.4
5,950
20,500
605,000
2,090,000
519.112
736.600
536.575
536.575
3.3
6.4
9,100
28,700
925,000
2,930,000
520
735
535
535
7
5
9,100
28,700
925,000
2,930,000
536.575
761.873
558.800
558.800
3.3
6.4
10,100
30,500
1,030,000
3,100,000
558.800
736.600 736.600
322.265 409.575
322.268 409.575
3.3 3.3
6.4 6.4
4,300 6,100
13,500 20,500
435,000 625,000
1,380,000 2,090,000
570
780 810
515 590
515 590
6 6
6 6
9,200 11,000
31,000 35,500
935,000 1,120,000
3,150,000 3,600,000
571.500
812.800
593.725
593.725
3.3
6.4
11,900
36,500
1,220,000
3,750,000
D
B2
457.200
596.900 660.400
276.225 323.850
279.400 323.847
1.5 3.3
460
650
474
474
475
660
450
480
678 700
482.600
1 Minimum allowable dimension for chamfer dimension r or r1.
B-222
rs min
1
Cr
d
C2
1
static
Cor
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg
da
Da
Sa
(approx.)
478 495
567 616
5.5 6.5
209 379
E-625992A
499
598.5
7
493
E-CRO-9501
506
614
10
465
E-625996 E-CRO-9602
525 517
623 645
7 8
563 436
☆＊E-LM272249D/LM272210/LM272210DG2
504
585
6.5
250
☆＊E-EE640193D/640260/640261DG2
519
624
9
364
＊E-LM772749D/LM772710/LM772710D
513
600
6.5
268
E-CRO-10008 E-CRO-10005 ☆E-6259/500 ☆E-CRO-10003
520 530 553 550
616 640 649.5 683
8 7 7.5 11
598 600 632 535
534
663
9.5
726
540
648
8
390
552
684
9.5
761
558
688
☆＊E-M276449D/M276410/M276410DG2
564
711
9.5
890
＊E-EE843221D/843290/843291D ☆＊E-LM377449D/LM377410/LM377410DG2
585 588
699 696
8.5 8
388 502
609 620
733 760
7.5 10
625 845
609
756
11
☆＊E-L770849D/L770810/L770810DG2 ＊E-EE737179D/737260/737260D
☆＊E-M274149D/M274110/M274110DG2 ＊E-LM274449D/LM274410/LM274410D ☆＊E-M275349D/M275310/M275310DG2 ☆E-CRO-10402
☆E-CRO-11402 ☆E-CRO-11403 ☆＊E-M278749D/M278710/M278710DG2
Note: 1. Bearing numbers marked "＊" designate inch system bearings. 2. Bearing numbers marked "☆" designate bearing with hollow rollers and pin type cages.
B-223
11
750
1,080
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 584.200∼825.500mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
kN C2
r1s min
Cr
6.4
6,550
22,300
670,000
2,280,000
3.3
6.4
7,350
25,700
750,000
2,620,000
615.950
3.3
6.4
12,600
40,500
1,290,000
4,100,000
361.950
361.950
3.3
6.4
6,450
20,300
655,000
2,070,000
676.275
676.275
3.3
6.4
15,300
48,000
1,560,000
4,900,000
642
642
7.5
7.5
15,400
43,500
1,570,000
4,450,000
584.200
762.000
396.875
401.638
3.3
585.788
771.525
479.425
479.425
595.312
844.550
615.950
609.600
787.400
657.225
933.450 1,070
kgf Cor
B2
rs min
1
Cr
D
660
1
static
Cor
660.400
812.800
365.125
365.125
3.3
6.4
6,200
23,200
630,000
2,360,000
670
960
700
700
7.5
7.5
16,700
51,500
1,700,000
5,300,000
679.450
901.700
552.450
552.450
3.3
6.4
11,200
38,000
1,140,000
3,900,000
680
870
460
460
3
6
7,500
27,400
765,000
2,790,000
682.625
965.200
701.675
701.675
3.3
6.4
16,100
50,500
1,640,000
5,150,000
685.800
876.300
352.425
355.600
3.3
6.4
6,050
21,800
615,000
2,220,000
710
900
410
410
2.5
5
7,650
26,900
780,000
2,740,000
711.200
914.400
317.500
317.500
3.3
6.4
5,350
17,900
545,000
1,820,000
730
1,070
642
642
7.5
7.5
15,400
46,500
1,570,000
4,750,000
730.250
1,035.050
755.650
755.650
3.3
6.4
18,300
60,000
1,870,000
6,100,000
749.300
990.600
605.000
605.000
3.3
6.4
12,600
45,500
1,290,000
4,650,000
762.000
1,079.500
787.400
787.400
4.8
12.7
19,200
65,000
1,960,000
6,600,000
800
1,120
820
820
7
7.5
21,000
72,500
2,140,000
7,400,000
825.500
1,168.400
844.550
844.550
4.8
12.7
22,300
76,500
2,270,000
7,800,000
1 Minimum allowable dimension for chamfer dimension r or r1.
B-224
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg
da
Da
☆＊E-LM778549D/LM778510/LM778510DG2
615
717
7
511
＊E-LM278849D/LM278810/LM278810D
615
726
10
750
☆＊E-M280049D/M280010/M280010DG2
633
786
11
1,160
☆＊E-EE649241D/649310/649311DG2
636
747
☆＊E-M281649D/M281610/M281610DG2
699
870
11
1,630
760
991
9
1,950
682.8
777
9
448
719
901
8
1,600
714
852
11
1,040
713
824
8
582
☆＊E-M282249D/M282210/M282210DG2
723
900
13
1,770
☆＊E-EE655271D/655345/655346DG2
717
831
8
539
745
850
10
620
744
873
780
1,020
7
1,900
☆＊E-M283449D/M283410/M283410D
774
966
13
2,210
☆＊E-LM283649D/LM283610/LM283610DG2
786
936
10.5
1,310
☆＊E-M284249D/M284210/M284210DG2
810
1,005
13
2,480
858
1,052
10
3,960
879
1,085
13
3,010
☆E-CRO-13202 ☆＊E-L281149D/L281110/L281110DG2 ☆E-CRO-13401 ☆＊E-LM281849D/LM281810/LM281810DG2 E-CRO-13602
☆E-CRO-14208 ☆＊E-EE755281D/755360/755361DG2 ☆E-CRO-14601
☆E-CRO-16001 ☆＊E-M285848D/M285810/M285810DG2
Note: 1. Bearing numbers marked "＊" designate inch system bearings. 2. Bearing numbers marked "☆" designate bearing with hollow rollers and pin type cages.
B-225
Sa
9.5
9.5
(approx.)
458
527
●Four Row Tapered Roller Bearings
C2 r r1 B2 D Da
d da
Sa
d 840∼1 200.150mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
B2
kN C2
r1s min
1
rs min
1
static kgf
Cr
Cor
Cr
Cor
6
21,900
76,500
2,230,000
7,800,000
840
1,170
840
840
6
863.600
1,130.300 1,219.200
669.925 876.300
669.925 889.000
4.8 4.8
12.7 12.7
15,800 24,100
59,500 83,000
1,610,000 2,450,000
6,050,000 8,450,000
938.212
1,270.000
825.500
825.500
4.8
12.7
22,500
80,000
2,300,000
8,150,000
950
1,360
880
880
4
7.5
27,000
89,000
2,750,000
9,050,000
1,593.850
990.600
990.600
4.8
12.7
33,500
132,000
3,400,000
13,500,000
1,200.150
1 Minimum allowable dimension for chamfer dimension r or r1.
B-226
●Four Row Tapered Roller Bearings
Bearing numbers
Abutment and fillet dimensions
Mass
mm
kg
da
Da
Sa
(approx.)
897
1,099
12
3,970
☆＊E-LM286249D/LM286210/LM286210DG2 ☆＊E-EE547341D/547480/547481DG2
906 918
1,065 1,135
11 6.5
1,950 3,640
☆＊E-LM287649D/LM287610/LM287610DG2
990
1,190
10
4,100
1,030
1,278
12
4,100
1,260
1,500
13
6,130
☆E-CRO-16803
☆E-CRO-19001 ☆＊E-LM288949D/LM288910/LM288910DG2
Note: 1. Bearing numbers marked "＊" designate inch system bearings. 2. Bearing numbers marked "☆" designate bearing with hollow rollers and pin type cages.
B-227
●Spherical Roller Bearings
1. Types, construction and characteristics
In addition to bearings with cylindrical bore diameters, those with tapered bore diameters are also available. Bearings with tapered bore diameters are specified by attaching the suffix "K" to the end of the bearing's basic number. The standard taper ratio is 1:12 for bearings with a "K" suffix, but for bearings in series 240 and 241 the suffix "K30" indicates the taper ratio for a bearing is 1:30. Most tapered bore bearings incorporate the use of adapters and withdrawal sleeves for shaft mounting.
Spherical roller bearings consist of an outer ring having a continuous spherical raceway within which operates two rows of barrel-shaped rollers which are in turn guided by an inner ring with two raceways separated by a center rib. (Refer to Diagram 1) This bearing has self-aligning properties, and therefore is suited for use where misalignment between the inner and outer rings occurs from housing installation error or shaft flexure. Spherical roller bearings have a large capacity for radial loads, axial loads in either direction, and complex loads. They are also suited for applications where vibration and shock loads are encountered. When operating under axial loads, however, it is desirable to maintain conditions so that Fa /Fr≦2e in order to prevent sliding movement along the row of rollers not receiving the axial load. (For the value of e, refer to dimension tables.) As shown in Table 1, in addition to standard type there are various other types of spherical roller bearings. Among these, Type E has a particularly high load capacity.
Allowable misalignment
Diagram 1.
Table 1 Types of spherical roller bearings Type
Standard type (B type)
C type
213 type
E type
Series 222, 223, and 213 with bore dia. of 50 mm or less; series 24024 to 24038.
Series 213 with bore dia. of 50 mm or more
Series 22211 to 22218
Construction
Bearing series Does not include C type Rollers Roller guide method Cage type
Asymmetrical Unified inner ring center rib Pressed Cage; machined cage
Symmetrical
Asymmetrical
Symmetrical
Separable guide ring between rows on inner raceway
Separable guide ring between rows on outer raceway
High precision cage (center rib, guide ring)
Pressed Cage
Machined cage
Molded resin cage
B-229
●Spherical Roller Bearings
2. Standard cage types h
Standard cage types for self-aligning bearings are shown in Table 2. In general, pressed cages are standard for small sized bearings, and machined cages are standard for large sized bearings. E type bearings use as their standard cage type a cage molded from a newly developed glass fiber reinforced polyamide 46 resin which has excellent heat resistance qualities (allowable operating temperatures up to 150˚C), strength, as well as unsurpassed oil resistance. Nonetheless, for certain applications with high speed specifications, large vibration and shock load conditions, and extremely high operating temperature ranges, this molded polyamide 46 resin cage cannot be used as standard. Please consult NTN Engineering concerning applications with these sorts of operating conditions.
Table 3 Oil inlet and oil groove dimensions
Pressed cage
Nominal bearing Oil groove Oil inlet width width diameter Width series Width series Wo do over including 1, 2, 3 4 − 30 45 60 80 100 120 160 200 315
− − −
− 23932 ∼ 239/1400 23022B ∼ 23048B 23052B ∼ 230/1120B 24024C ∼ 24038C 24024B ∼ 240/1120B
231 241
− −
23120B ∼ 23136B 23138B ∼ 231/900B − 24122B ∼ 241/710B
232 213 223
6 7 9 11 14 16 20 27 33 42
3 4 5 6 8 10 12 16 20 25
1.2 1.5 1.5 2.0 2.5 3.0 3.5 5.0 6.0 7.0
1.0 1.1 1.3 1.5 2.0 2.5 3.0 3.5 5.0 6.5
Table 4 Oil inlet number Nominal bearing outer diameter mm over up to including − 320 1 010
22211E ∼ 22218E 22208C ∼ 22210C 22238B ∼ 22264B 22211B ∼ 22236B − − −
30 45 60 80 100 120 160 200 315 −
Machined cage
239 230 240
222
Units mm Oil groove depth h
Table 2 Standard cage types Bearing Molded resin cage series
Wo Zo do
320 1 010 −
Oil inlet number Zo 4 8 12
If a pin is necessary to prevent outer ring rotation, contact
− 23218B ∼ 232/750B 21308C ∼ 21310C 21311 ∼ 21322 22308C ∼ 22310C 22330B ∼ 22360B 22311B ∼ 22328B
NTN Engineering.
3. Oil inlets and oil groove dimensions
4. Allowable misalignment
Spherical roller bearings with an outer diameter of 320mm or more are provided with an oil inlet and oil groove on the outer ring for the purpose of supplying lubricant to the bearing's moving parts. When necessary, oil inlets and oil grooves can also be provided on bearings with outer diameters less than 320 mm. In such cases, please add the supplementary suffix code "D1" to the end of the bearing number, and contact NTN Engineering. (Refer to page A-29) Table 3 lists dimensions for oil inlets and oil grooves. Table 4 contains information about the number of oil inlets.
Spherical roller bearings possess the same self-aligning properties as other self-aligning bearings. The allowable misalignment angle will vary according to dimension series and load conditions, but the following misalignment angles are generally standard: Normal load (loads equivalent to 0.09 sCr): ………………………………0.009rad (0.5˚) Light load: …………………………………0.035rad (2˚)
B-230
●Spherical Roller Bearings
5. Adapters and withdrawal sleeves Adapters are used for installation of bearings with tapered bore diameters on cylindrical shafts. Withdrawal sleeves are also used to install and disassemble bearings with tapered bore diameters onto and off of cylindrical shafts. In disassembling the bearing from the shaft, the nut is pressed down against the edge of the inner ring utilizing the bolt provided on the withdrawal sleeve, and then the sleeve is drawn away from the bearing's inner diameter surface. For bearings with a bore diameter of 200 mm or more, high pressure oil (hydraulic) type adapters and withdrawal sleeves have been standardized to make installation and disassembly easier. As shown in Diagram 2 construction is designed to reduce friction by injecting high pressure oil between the surfaces of the adapter sleeve and bearing inner bore by means of a pressure fitting. If the oil supply inlet is attached in the nut side of the adapter, the supplementary suffix "HF" should be added to the bearing number; if the oil supply inlet is attached on the opposite side, the suffix "HB" should be added to the bearing number. For adapter sleeves, the supplementary suffix "H" is added to the bearing's number in both cases. For the hydraulic sleeve's nut, the supplementary suffix "SP" should be added to the nut's part number if a threaded bolt hole will be provided for installation / disassembly purposes; if a hole for a hydraulic pressure fitting will be provided, "SPB" should be added to the end of the nut's part number. For more information regarding high pressure oil (hydraulic) adapters and withdrawal sleeves, please refer to their special catalog.
Diagram 2.
B-231
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 25∼75mm Boundary dimensions dynamic mm d
kN
D
B
rs min
25
52
18
30
62
35
3
1
Basic load ratings static dynamic
Limiting speeds
Bearing numbers
static kgf Cor
grease
oil
cylindrical bore
2
tapered bore
Cr
Cor
1
36.5
36
3,750
3,650
6,500
10,000
22205C
22205CK
20
1
49
49
5,000
5,000
5,700
8,800
22206C
22206CK
72
23
1.1
69.5
71
7,050
7,200
4,900
7,500
22207C
22207CK
40
80 90 90
23 23 33
1.1 1.5 1.5
79 88 121
88.5 90 128
8,050 8,950 12,300
9,000 9,150 13,000
4,300 3,200 3,800
6,600 4,900 5,900
22208C 21308C 22308C
22208CK 21308CK 22308CK
45
85 100 100
23 25 36
1.1 1.5 1.5
82.5 102 148
95 106 167
8,400 10,400 15,100
9,700 10,800 17,000
3,800 2,900 3,400
5,900 4,400 5,300
22209C 21309C 22309C
22209CK 21309CK 22309CK
50
90 110 110
23 27 40
1.1 2 2
86 118 186
102 127 212
8,750 12,000 19,000
10,400 12,900 21,600
3,500 2,600 3,100
5,300 4,000 4,800
22210C 21310C 22310C
22210CK 21310CK 22310CK
55
100 100 120 120
25 25 29 43
1.5 1.5 2 2
118 93.5 145 204
144 110 163 234
12,000 9,500 14,800 20,800
14,700 11,200 16,600 23,900
3,200 3,200 2,400 2,800
4,900 4,200 3,700 4,400
22211E 22211B 21311 22311B
22211EK 22211BK 21311K 22311BK
60
110 110 130 130
28 28 31 46
1.5 1.5 2.1 2.1
150 115 167 238
182 147 191 273
15,300 11,700 17,100 24,300
18,500 15,000 19,500 27,800
2,900 2,900 2,200 2,600
4,500 4,500 3,400 4,000
22212E 22212B 21312 22312B
22212EK 22212BK 21312K 22312BK
65
120 120 140 140
31 31 33 48
1.5 1.5 2.1 2.1
177 143 194 265
217 179 228 320
18,000 14,600 19,800 27,100
22,200 18,300 23,200 32,500
2,700 2,700 2,000 2,400
4,200 4,200 3,100 3,700
22213E 22213B 21313 22313B
22213EK 22213BK 21313K 22313BK
70
125 125 150 150
31 31 35 51
1.5 1.5 2.1 2.1
184 154 220 325
232 201 262 380
18,700 15,700 22,400 33,000
23,600 20,500 26,800 39,000
2,500 2,500 1,900 2,300
3,900 3,900 2,900 3,500
22214E 22214B 21314 22314B
22214EK 22214BK 21314K 22314BK
130
31
1.5
190
246
19,400
25,100
2,300
3,600
22215E
22215EK
75
Cr
rpm
1 This value was achieved with machined cages and molded resin cages; for pressed cages, 75% of this value is allowable. 2 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 3 Smallest allowable dimension for chamfer dimension r.
B-232
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
Mass (approx.)
mm min
kg Da
da max
ras
min
max
max
e
Y1
Y2
Yo
cylindrical bore
tapered bore
31
―
―
46
1
0.35
1.92
2.86
1.88
0.186
0.182
36
―
―
56
1
0.33
2.07
3.09
2.03
0.287
0.282
42
―
―
65
1
0.32
2.09
3.11
2.04
0.446
0.437
47 48.5 48.5
― ― ―
― ― ―
73 81.5 81.5
1 1.5 1.5
0.29 0.26 0.38
2.35 2.55 1.76
3.50 3.80 2.62
2.30 2.50 1.72
0.526 0.705 0.974
0.515 0.694 0.951
52 53.5 53.5
― ― ―
― ― ―
78 91.5 91.5
1 1.5 1.5
0.27 0.26 0.36
2.50 2.60 1.86
3.72 3.87 2.77
2.44 2.54 1.82
0.584 0.927 1.33
0.572 0.912 1.3
57 60 60
― ― ―
― ― ―
83 100 100
1 2 2
0.25 0.26 0.37
2.69 2.64 1.80
4.01 3.93 2.69
2.63 2.58 1.76
0.63 1.21 1.79
0.616 1.19 1.75
63.5 63.5 65 65
67 ― ― ―
89.5 ― ― ―
91.5 91.5 110 110
1.5 1.5 2 2
0.24 0.28 0.25 0.40
2.83 2.42 2.69 1.68
4.21 3.61 4.01 2.50
2.76 2.37 2.63 1.64
0.808 0.85 1.71 2.3
0.79 0.832 1.69 2.25
68.5 68.5 72 72
72 ― ― ―
98 ― ― ―
101.5 101.5 118 118
1.5 1.5 2 2
0.25 0.27 0.25 0.42
2.75 2.49 2.69 1.62
4.09 3.71 4.00 2.42
2.69 2.44 2.63 1.59
1.09 1.15 2.1 2.9
1.07 1.13 2.07 2.83
73.5 73.5 77 77
78.5 ― ― ―
107 ― ― ―
111.5 111.5 128 128
1.5 1.5 2 2
0.25 0.28 0.25 0.38
2.71 2.42 2.69 1.79
4.04 3.60 4.00 2.67
2.65 2.37 2.63 1.75
1.43 1.5 2.55 3.45
1.4 1.47 2.51 3.37
78.5 78.5 82 82
83.5 ― ― ―
112.5 ― ― ―
116.5 116.5 138 138
1.5 1.5 2 2
0.24 0.26 0.25 0.37
2.86 2.55 2.69 1.81
4.25 3.80 4.00 2.70
2.79 2.50 2.63 1.77
1.51 1.55 3.18 4.22
1.47 1.52 3.14 4.12
83.5
89
117.5
121.5
1.5
0.22
3.00
4.47
2.94
1.59
1.55
Note: Upon request, bearings with oil inlets and oil grooves on the outer ring can also be manufactured. In such cases, please add the suffix "D1" to the end of the bearing number. (Example: 22214BD1)
B-233
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 75∼120mm Boundary dimensions dynamic mm
1
Basic load ratings static dynamic kN
Limiting speeds
Bearing numbers
static kgf
rpm
2
Cr
Cor
Cr
Cor
grease
oil
cylindrical bore
1.5 2.1 2.1
166 239 330
223 287 410
16,900 24,300 33,500
22,800 29,300 42,000
2,300 1,800 2,100
3,600 2,700 3,200
22215B 21315 22315B
22215BK 21315K 22315BK
33 33 39 58
2 2 2.1 2.1
213 179 260 385
277 239 315 470
21,700 18,300 26,500 39,500
28,200 24,400 32,000 48,000
2,200 2,200 1,700 2,000
3,400 3,400 2,500 3,000
22216E 22216B 21316 22316B
22216EK 22216BK 21316K 22316BK
85
150 150 180 180
36 36 41 60
2 2 3 3
251 206 289 415
320 272 355 510
25,600 21,000 29,500 42,500
33,000 27,800 36,000 52,000
2,100 2,100 1,600 1,900
3,200 3,200 2,400 2,900
22217E 22217B 21317 22317B
22217EK 22217BK 21317K 22317BK
90
160 160 160 190 190
40 40 52.4 43 64
2 2 2 3 3
292 256 315 320 480
385 345 455 400 590
29,800 26,200 32,500 32,500 49,000
39,500 35,000 46,500 40,500 60,000
1,900 1,900 1,800 1,500 1,800
3,000 3,000 2,800 2,300 2,700
22218E 22218B 23218B 21318 22318B
22218EK 22218BK 23218BK 21318K 22318BK
95
170 200 200
43 45 67
2.1 3 3
294 335 500
390 420 615
30,000 34,000 51,000
39,500 43,000 63,000
1,800 1,400 1,600
2,800 2,100 2,500
22219B 21319 22319B
22219BK 21319K 22319BK
100
165 180 180 215 215
52 46 60.3 47 73
2 2.1 2.1 3 3
310 315 405 370 605
470 415 580 465 755
31,500 32,000 41,500 37,500 61,500
47,500 42,500 59,000 47,500 77,000
1,700 1,700 1,600 1,300 1,600
2,600 2,700 2,500 2,000 2,400
23120B 22220B 23220B 21320 22320B
23120BK 22220BK 23220BK 21320K 22320BK
110
170 180 180 200 200 240 240
45 56 69 53 69.8 50 80
2 2 2 2.1 2.1 3 3
282 370 450 410 515 495 745
455 580 755 570 760 615 930
28,800 37,500 46,000 42,000 52,500 50,500 76,000
46,500 59,500 77,000 58,000 77,500 62,500 95,000
1,800 1,500 1,500 1,600 1,400 1,200 1,400
2,800 2,400 2,400 2,400 2,200 1,800 2,200
23022B 23122B 24122B 22222B 23222B 21322 22322B
23022BK 23122BK 24122BK30 22222BK 23222BK 21322K 22322BK
120
180
46
2
296
495
30,000
50,500
1,700
2,600
23024B
23024BK
d
D
B
rs min
75
130 160 160
31 37 55
80
140 140 170 170
3
1 This value was achieved with machined cages and molded resin cages; for pressed cages, 75% of this value is allowable. 2 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 3 Smallest allowable dimension for chamfer dimension r. B-234
tapered bore
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
Mass (approx.)
mm
kg Da
da
ras
min
max
max
e
Y1
Y2
Yo
cylindrical bore
― ― ―
― ― ―
121.5 148 148
1.5 2 2
0.24 0.24 0.37
2.81 2.84 1.80
4.19 4.23 2.69
2.75 2.78 1.76
1.65 3.81 5.25
1.61 3.76 5.13
90 90 92 92
94.5 ― ― ―
125.5 ― ― ―
130 130 158 158
2 2 2 2
0.22 0.26 0.23 0.37
3.01 2.64 2.95 1.80
4.48 3.93 4.39 2.69
2.94 2.58 2.88 1.76
1.99 2.15 4.53 6.05
1.94 2.11 4.47 5.91
95 95 99 99
100.5 ― ― ―
135 ― ― ―
140 140 166 166
2 2 2.5 2.5
0.23 0.26 0.25 0.37
2.96 2.60 2.69 1.82
4.41 3.88 4.00 2.71
2.90 2.55 2.63 1.78
2.49 2.66 5.35 7.1
2.43 2.61 5.28 6.94
100 100 100 104 104
107.5 ― ― ― ―
144 ― ― ― ―
150 150 150 176 176
2 2 2 2.5 2.5
0.24 0.26 0.33 0.24 0.37
2.86 2.55 2.04 2.83 1.80
4.25 3.80 3.03 4.22 2.69
2.79 2.49 1.99 2.77 1.76
3.24 3.5 4.45 6.3 8.35
3.16 3.42 4.32 6.21 8.16
107 109 109
― ― ―
― ― ―
158 186 186
2 2.5 2.5
0.26 0.23 0.37
2.63 3.00 1.80
3.92 4.46 2.69
2.57 2.93 1.76
4.1 7.1 9.76
4.01 7 9.54
110 112 112 114 114
― ― ― ― ―
― ― ― ― ―
155 168 168 201 201
2 2 2 2.5 2.5
0.32 0.26 0.34 0.22 0.37
2.12 2.55 1.98 3.01 1.80
3.15 3.80 2.94 4.48 2.69
2.07 2.49 1.93 2.94 1.76
4.3 4.95 6.47 8.89 12.4
4.16 4.84 6.28 8.78 12.1
120 120 120 122 122 124 124
― ― ― ― ― ― ―
― ― ― ― ― ― ―
160 170 170 188 188 226 226
2 2 2 2 2 2.5 2.5
0.26 0.31 0.38 0.27 0.35 0.21 0.36
2.59 2.17 1.76 2.51 1.91 3.20 1.87
3.85 3.24 2.63 3.74 2.84 4.77 2.79
2.53 2.13 1.73 2.46 1.86 3.13 1.83
3.71 5.4 7.07 7.2 9.71 11.2 17.1
3.58 5.22 6.96 7.04 9.43 11.1 16.7
130
―
―
170
2
0.25
2.69
4.01
2.63
4.05
3.9
min
max
83.5 87 87
tapered bore
Note: Upon request, bearings with oil inlets and oil grooves on the outer ring can also be manufactured. In such cases, please add the suffix "D1" to the end of the bearing number. (Example: 23024BD1)
B-235
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 120∼160mm Boundary dimensions dynamic mm
kN
d
D
B
rs min
120
180 180 200 200 215 215 260
60 60 62 80 58 76 86
2 2 2 2 2.1 2.1 3
130
200 200 200 210 210 230 230 280
52 69 69 64 80 64 80 93
140
210 210 210 225 225 250 250 300
3
Cr
1
Basic load ratings static dynamic
Limiting speeds kgf
Cor
Bearing numbers
static rpm
Cr
Cor
grease
oil
cylindrical bore
2
tapered bore
390 395 455 575 485 585 880
670 695 705 945 700 880 1,120
39,500 40,000 46,500 58,500 49,500 59,500 89,500
68,500 71,000 71,500 96,500 71,500 89,500 114,000
1,500 1,500 1,400 1,400 1,400 1,300 1,300
2,300 2,300 2,100 2,100 2,200 2,000 2,000
24024B 24024C 23124B 24124B 22224B 23224B 22324B
24024BK30 24024CK30 23124BK 24124BK30 22224BK 23224BK 22324BK
2 2 2 2 2 3 3 4
375 505 490 495 585 570 685 1,000
620 895 860 795 995 790 1,060 1,290
38,500 51,500 50,000 50,500 60,000 58,000 70,000 102,000
63,500 91,000 87,500 81,000 102,000 80,500 108,000 131,000
1,500 1,300 1,300 1,300 1,300 1,300 1,200 1,200
2,300 2,100 2,100 2,000 2,000 2,000 1,900 1,800
23026B 24026B 24026C 23126B 24126B 22226B 23226B 22326B
23026BK 24026BK30 24026CK30 23126BK 24126BK30 22226BK 23226BK 22326BK
53 69 69 68 85 68 88 102
2 2 2 2.1 2.1 3 3 4
405 510 520 540 670 685 805 1,130
690 945 940 895 1,150 975 1,270 1,460
41,000 52,000 53,000 55,000 68,500 70,000 82,000 115,000
70,500 96,500 95,500 91,000 117,000 99,500 129,000 149,000
1,400 1,200 1,200 1,200 1,200 1,200 1,100 1,100
2,200 1,900 1,900 1,800 1,800 1,900 1,700 1,700
23028B 24028B 24028C 23128B 24128B 22228B 23228B 22328B
23028BK 24028BK30 24028CK30 23128BK 24128BK30 22228BK 23228BK 22328BK
150
225 225 225 250 250 270 270 320
56 75 75 80 100 73 96 108
2.1 2.1 2.1 2.1 2.1 3 3 4
445 585 600 730 885 775 935 1,270
775 1,060 1,090 1,190 1,520 1,160 1,460 1,750
45,500 59,500 61,000 74,500 90,500 79,000 95,000 130,000
79,000 108,000 111,000 121,000 155,000 119,000 149,000 179,000
1,300 1,200 1,200 1,100 1,100 1,100 1,000 1,000
2,000 1,800 1,800 1,700 1,700 1,700 1,600 1,600
23030B 24030B 24030C 23130B 24130B 22230B 23230B 22330B
23030BK 24030BK30 24030CK30 23130BK 24130BK30 22230BK 23230BK 22330BK
160
220 240 240 240
45 60 80 80
2 2.1 2.1 2.1
320 505 650 665
610 885 1,200 1,250
33,000 51,500 66,500 67,500
62,500 90,000 122,000 127,000
1,300 1,200 1,100 1,100
2,000 1,900 1,700 1,700
23932 23032B 24032B 24032C
23932K 23032BK 24032BK30 24032CK30
1 This value was achieved with machined cages and molded resin cages; for pressed cages, 75% of this value is allowable. 2 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 3 Smallest allowable dimension for chamfer dimension r. B-236
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
Mass (approx.)
da
mm Da
ras
kg
min
max
max
e
Y1
Y2
Yo
130 130 130 130 132 132 134
170 170 190 190 203 203 246
2 2 2 2 2 2 2.5
0.33 0.32 0.31 0.40 0.27 0.36 0.37
2.06 2.12 2.17 1.68 2.47 1.89 1.80
3.07 3.15 3.24 2.50 3.68 2.82 2.69
2.02 2.07 2.13 1.64 2.42 1.85 1.76
5.48 5.48 7.7 10.3 9.1 12.1 21.5
5.39 4.91 7.46 10.1 8.89 11.7 21
140 140 140 140 140 144 144 148
190 190 190 200 200 216 216 262
2 2 2 2 2 2.5 2.5 3
0.26 0.34 0.32 0.30 0.38 0.28 0.35 0.37
2.63 1.98 2.12 2.23 1.78 2.39 1.92 1.81
3.92 2.95 3.15 3.32 2.65 3.56 2.86 2.69
2.57 1.94 2.07 2.18 1.74 2.33 1.88 1.77
5.9 8.08 7.91 8.47 11 11.2 14.3 26.8
5.69 7.95 7.78 8.2 10.8 10.9 13.9 26.2
150 150 150 152 152 154 154 158
200 200 200 213 213 236 236 282
2 2 2 2 2 2.5 2.5 3
0.25 0.32 0.30 0.30 0.38 0.28 0.36 0.37
2.73 2.09 2.23 2.25 1.80 2.39 1.90 1.80
4.06 3.12 3.32 3.35 2.68 3.55 2.83 2.69
2.67 2.05 2.18 2.20 1.76 2.33 1.86 1.76
6.35 8.57 8.48 10.2 13.3 14 18.8 33.8
6.12 8.43 7.66 9.86 13.1 13.7 18.2 33
162 162 162 162 162 164 164 168
213 213 213 238 238 256 256 302
2 2 2 2 2 2.5 2.5 3
0.24 0.33 0.30 0.32 0.40 0.27 0.36 0.35
2.76 2.06 2.25 2.11 1.69 2.46 1.88 1.92
4.11 3.07 3.34 3.15 2.51 3.66 2.79 2.86
2.70 2.02 2.20 2.06 1.65 2.4 1.83 1.88
7.73 10.7 10.5 15.6 20.2 18.1 24.1 42.7
7.45 10.5 10.3 15.1 20 17.7 23.4 41.8
170 172 172 172
210 228 228 228
2 2 2 2
0.18 0.25 0.32 0.31
3.69 2.74 2.10 2.18
5.49 4.09 3.13 3.24
3.61 2.68 2.06 2.13
5.5 9.42 13 12
5.33 9.09 12.8 11.8
cylindrical bore
tapered bore
Note: When the outer diameter of a Spherical Roller Bearing is 320mm or larger, an oil groove is on OD. See page B-230 on dimensions. We can make bearings with oil hole or oil groove in the outer ring, per your request, for an outer diameter of 320mm or less. Such bearings are indicated by attaching "D1" to the end of the bearing number. (ex. 23032BD1) B-237
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 160∼200mm Boundary dimensions dynamic mm
1
Basic load ratings static dynamic kN
Limiting speeds
Bearing numbers
static kgf
rpm
2
Cr
Cor
Cr
Cor
grease
oil
cylindrical bore
2.1 2.1 3 3 4
840 1,040 870 1,050 1,410
1,370 1,780 1,290 1,660 1,990
85,500 106,000 88,500 107,000 144,000
140,000 181,000 132,000 170,000 203,000
1,000 1,000 1,000 960 940
1,600 1,600 1,600 1,500 1,500
23132B 24132B 22232B 23232B 22332B
23132BK 24132BK30 22232BK 23232BK 22332BK
45 67 90 90 88 109 86 110 120
2 2.1 2.1 2.1 2.1 2.1 4 4 4
330 630 800 815 885 1,080 1,000 1,180 1,540
650 1,080 1,470 1,500 1,490 1,880 1,520 1,960 2,180
34,000 64,000 81,500 83,000 90,500 110,000 102,000 120,000 157,000
66,000 110,000 150,000 153,000 152,000 191,000 155,000 200,000 223,000
1,200 1,100 1,000 1,000 960 960 980 910 880
1,900 1,800 1,600 1,600 1,500 1,500 1,500 1,400 1,400
23934 23034B 24034B 24034C 23134B 24134B 22234B 23234B 22334B
23934K 23034BK 24034BK30 24034CK30 23134BK 24134BK30 22234BK 23234BK 22334BK
180
250 280 280 280 300 300 320 320 380
52 74 100 100 96 118 86 112 126
2 2.1 2.1 2.1 3 3 4 4 4
440 740 965 965 1,030 1,250 1,040 1,230 1,740
835 1,290 1,770 1,770 1,730 2,210 1,610 2,000 2,560
45,000 75,500 98,500 98,500 105,000 127,000 106,000 125,000 177,000
85,000 132,000 181,000 181,000 176,000 225,000 164,000 204,000 261,000
1,200 1,100 950 950 900 900 920 850 830
1,800 1,700 1,500 1,500 1,400 1,400 1,400 1,300 1,300
23936 23036B 24036B 24036C 23136B 24136B 22236B 23236B 22336B
23936K 23036BK 24036BK30 24036CK30 23136BK 24136BK30 22236BK 23236BK 22336BK
190
260 290 290 290 320 320 340 340 400
52 75 100 100 104 128 92 120 132
2 2.1 2.1 2.1 3 3 4 4 5
460 755 995 970 1,190 1,420 1,160 1,400 1,870
890 1,350 1,850 1,820 2,020 2,480 1,810 2,330 2,790
47,000 77,000 102,000 98,500 122,000 144,000 118,000 143,000 191,000
91,000 138,000 188,000 186,000 206,000 253,000 185,000 237,000 284,000
1,100 1,000 900 900 850 850 860 790 780
1,700 1,600 1,400 1,400 1,300 1,300 1,300 1,200 1,200
23938 23038B 24038B 24038C 23138B 24138B 22238B 23238B 22338B
23938K 23038BK 24038BK30 24038CK30 23138BK 24138BK30 22238BK 23238BK 22338BK
200
280 310 310
60 82 109
2.1 2.1 2.1
545 915 1,160
1,100 1,620 2,140
56,000 93,000 118,000
112,000 165,000 219,000
1,000 960 850
1,600 1,500 1,300
23940 23040B 24040B
23940K 23040BK 24040BK30
d
D
B
rs min
160
270 270 290 290 340
86 109 80 104 114
170
230 260 260 260 280 280 310 310 360
3
1 This value was achieved with machined cages and molded resin cages; for pressed cages, 75% of this value is allowable. 2 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 3 Smallest allowable dimension for chamfer dimension r. B-238
tapered bore
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
da
mm Da
ras
min
max
max
e
Y1
Y2
172 172 174 174 178
258 258 276 276 322
2 2 2.5 2.5 3
0.32 0.40 0.28 0.36 0.35
2.11 1.67 2.42 1.86 1.94
180 182 182 182 182 182 188 188 188
220 248 248 248 268 268 292 292 342
2 2 2 2 2 2 3 3 3
0.17 0.25 0.34 0.31 0.31 0.39 0.28 0.36 0.34
190 192 192 192 194 194 198 198 198
240 268 268 268 286 286 302 302 362
2 2 2 2 2.5 2.5 3 3 3
200 202 202 202 204 204 208 208 212
250 278 278 278 306 306 322 322 378
212 212 212
268 298 298
Mass (approx.) kg Yo
cylindrical bore
tapered bore
3.15 2.48 3.60 2.77 2.89
2.07 1.63 2.37 1.82 1.90
19.8 26 22.7 30 50.8
19.2 25.6 22.2 29.1 49.7
3.91 2.66 1.98 2.16 2.15 1.74 2.39 1.87 1.96
5.83 3.96 2.95 3.22 3.21 2.59 3.56 2.79 2.91
3.83 2.60 1.94 2.12 2.11 1.70 2.34 1.83 1.91
5.8 12.7 17.7 17.4 21.5 27.2 28 36.8 59.8
5.62 12.3 17.4 17.1 20.8 26.8 27.3 35.7 58.5
0.19 0.26 0.35 0.33 0.32 0.39 0.27 0.35 0.34
3.52 2.59 1.91 2.04 2.11 1.72 2.49 1.91 1.97
5.25 3.85 2.85 3.04 3.15 2.56 3.70 2.84 2.93
3.45 2.53 1.87 2.00 2.07 1.68 2.43 1.86 1.92
8.21 16.7 23.3 23 25.1 34.3 29.3 39 70
7.95 16.1 22.9 22.6 24.2 33.8 28.6 37.8 68.5
2 2 2 2 2.5 2.5 3 3 4
0.18 0.26 0.33 0.31 0.33 0.40 0.27 0.36 0.34
3.81 2.65 2.03 2.16 2.07 1.69 2.47 1.89 1.97
5.67 3.94 3.02 3.22 3.09 2.51 3.68 2.82 2.94
3.73 2.59 1.98 2.12 2.03 1.65 2.42 1.85 1.93
8.6 17.7 24.3 23 35.3 42.8 36.6 47.6 81
8.34 17.1 23.9 22.6 34.2 42.2 35.8 46.2 79.3
2 2 2
0.17 0.26 0.35
3.91 2.59 1.94
5.82 3.85 2.89
3.82 2.53 1.90
12.1 22.7 31
11.7 21.9 30.5
Note: When the outer diameter of a Spherical Roller Bearing is 320mm or larger, an oil groove is on OD. See page B-230 on dimensions. We can make bearings with oil hole or oil groove in the outer ring, per your request, for an outer diameter of 320mm or less. Such bearings are indicated by attaching "D1" to the end of the bearing number. (ex. 23040BD1) B-239
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 200∼280mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN
d
D
B
200
340 340 360 360 420
112 140 98 128 138
220
300 340 340 370 370 400 400 460
rs min
2
Limiting speeds
Bearing numbers
static kgf
rpm
1
oil
cylindrical bore
800 800 820 750 740
1,200 1,200 1,300 1,200 1,100
23140B 24140B 22240B 23240B 22340B
23140BK 24140BK30 22240BK 23240BK 22340BK
119,000 195,000 262,000 272,000 345,000 251,000 340,000 360,000
930 870 770 720 720 730 670 660
1,400 1,300 1,200 1,100 1,100 1,100 1,000 1,000
23944 23044B 24044B 23144B 24144B 22244B 23244B 22344B
23944K 23044BK 24044BK30 23144BK 24144BK30 22244BK 23244BK 22344BK
58,000 116,000 144,000 177,000 215,000 198,000 247,000 278,000
121,000 219,000 282,000 310,000 390,000 315,000 420,000 420,000
840 790 700 650 650 660 610 600
1,300 1,200 1,100 1,000 1,000 1,000 940 930
23948 23048B 24048B 23148B 24148B 22248B 23248B 22348B
23948K 23048BK 24048BK30 23148BK 24148BK30 22248BK 23248BK 22348BK
1,580 2,620 3,550 3,850 4,600 3,600 4,700 4,750
77,500 144,000 186,000 219,000 256,000 228,000 281,000 320,000
161,000 267,000 365,000 395,000 470,000 365,000 480,000 485,000
770 720 640 600 600 610 560 550
1,200 1,100 980 920 920 930 860 850
23952 23052B 24052B 23152B 24152B 22252B 23252B 22352B
23952K 23052BK 24052BK30 23152BK 24152BK30 22252BK 23252BK 22352BK
1,750 2,920 3,950 4,250 5,200 3,800
84,500 154,000 199,000 234,000 278,000 236,000
179,000 297,000 405,000 435,000 530,000 390,000
710 660 590 550 550 560
1,100 1,000 900 850 850 860
23956 23056B 24056B 23156B 24156B 22256B
23956K 23056BK 24056BK30 23156BK 24156BK30 22256BK
Cr
Cor
Cr
Cor
3 3 4 4 5
1,350 1,630 1,310 1,610 2,040
2,270 2,900 2,010 2,640 3,050
137,000 166,000 134,000 165,000 208,000
231,000 295,000 205,000 269,000 310,000
60 90 118 120 150 108 144 145
2.1 3 3 4 4 4 4 5
565 1,060 1,350 1,540 1,880 1,580 2,010 2,350
1,170 1,920 2,570 2,670 3,400 2,460 3,350 3,500
57,500 108,000 138,000 157,000 192,000 161,000 205,000 240,000
240
320 360 360 400 400 440 440 500
60 92 118 128 160 120 160 155
2.1 3 3 4 4 4 4 5
565 1,130 1,410 1,730 2,110 1,940 2,430 2,720
1,190 2,140 2,770 3,050 3,800 3,100 4,100 4,100
260
360 400 400 440 440 480 480 540
75 104 140 144 180 130 174 165
2.1 4 4 4 4 5 5 6
760 1,420 1,830 2,140 2,510 2,230 2,760 3,100
280
380 420 420 460 460 500
75 106 140 146 180 130
2.1 4 4 5 5 5
830 1,510 1,950 2,300 2,730 2,310
grease
1 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 2 Smallest allowable dimension for chamfer dimension r. B-240
tapered bore
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
da
mm Da
ras
min
max
max
e
Y1
Y2
214 214 218 218 222
326 326 342 342 398
2.5 2.5 3 3 4
0.33 0.41 0.28 0.36 0.34
2.05 1.64 2.45 1.88 1.98
232 234 234 238 238 238 238 242
288 326 326 352 352 382 382 438
2 2.5 2.5 3 3 3 3 4
0.19 0.26 0.34 0.33 0.41 0.27 0.36 0.33
252 254 254 258 258 258 258 262
308 346 346 382 382 422 422 478
2 2.5 2.5 3 3 3 3 4
272 278 278 278 278 282 282 288
348 382 382 422 422 458 458 512
292 298 298 302 302 302
368 402 402 438 438 478
Mass (approx.) kg Yo
cylindrical bore
tapered bore
3.05 2.44 3.64 2.79 2.95
2.00 1.60 2.39 1.83 1.94
43.3 53.4 44 57.2 93.2
42 52.6 43 55.5 91.2
3.62 2.59 1.97 2.07 1.66 2.46 1.85 2.06
5.39 3.85 2.94 3.09 2.47 3.66 2.76 3.07
3.54 2.53 1.93 2.03 1.62 2.40 1.81 2.02
13.1 29.9 40.2 53.3 67 60.4 80 117
12.7 28.8 39.6 51.6 66 59.1 77.6 115
0.16 0.25 0.32 0.32 0.40 0.28 0.37 0.32
4.13 2.69 2.09 2.11 1.69 2.43 1.83 2.10
6.15 4.01 3.12 3.15 2.51 3.62 2.72 3.13
4.04 2.63 2.05 2.07 1.65 2.38 1.79 2.06
14 33.4 43 65.8 82.2 81.7 108 148
13.6 32.2 42.3 63.8 80.9 80 105 145
2 3 3 3 3 4 4 5
0.19 0.26 0.34 0.33 0.41 0.28 0.37 0.32
3.53 2.63 1.96 2.05 1.63 2.45 1.83 2.13
5.26 3.92 2.91 3.06 2.43 3.64 2.72 3.18
3.45 2.57 1.91 2.01 1.60 2.39 1.79 2.09
24 48.5 65.2 91.4 114 106 141 183
23.3 46.8 64.1 88.6 112 104 137 179
2 3 3 4 4 4
0.17 0.25 0.33 0.32 0.39 0.26
3.88 2.73 2.06 2.13 1.73 2.57
5.78 4.06 3.07 3.18 2.58 3.83
3.79 2.67 2.02 2.09 1.69 2.51
26.4 52.4 69 97.7 120 112
25.6 50.6 67.9 94.6 118 110
Note: Please refer to page B-230 for outer ring oil inlet and oil groove dimensions.
B-241
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 280∼380mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN
d
D
B
280
500 580
176 175
300
420 460 460 500 500 540 540 620
rs min
2
Limiting speeds
Bearing numbers
static kgf
rpm
1
oil
cylindrical bore
510 500
790 780
23256B 22356B
23256BK 22356BK
237,000 365,000 505,000 510,000 650,000 440,000 615,000 550,000
650 610 540 510 510 510 470 470
1,000 940 840 780 780 790 730 720
23960 23060B 24060B 23160B 24160B 22260B 23260B 22360B
23960K 23060BK 24060BK30 23160BK 24160BK30 22260BK 23260BK 22360BK
116,000 200,000 255,000 320,000 390,000 315,000 410,000
251,000 395,000 530,000 590,000 745,000 515,000 720,000
610 570 500 470 470 480 440
930 880 780 730 730 730 680
23964 23064B 24064B 23164B 24164B 22264B 23264B
23964K 23064BK 24064BK30 23164BK 24164BK30 22264BK 23264BK
2,650 4,550 6,200 6,600 8,950 8,000
124,000 235,000 305,000 365,000 470,000 455,000
270,000 465,000 630,000 670,000 910,000 815,000
570 530 470 440 440 410
870 820 720 680 680 630
23968 23068B 24068B 23168B 24168B 23268B
23968K 23068BK 24068BK30 23168BK 24168BK30 23268BK
1,320 2,370 3,100 3,750 4,600 4,850
2,930 4,700 6,600 7,050 9,150 8,700
135,000 242,000 320,000 385,000 470,000 495,000
298,000 480,000 675,000 715,000 935,000 885,000
530 500 440 410 410 380
820 770 680 630 630 590
23972 23072B 24072B 23172B 24172B 23272B
23972K 23072BK 24072BK30 23172BK 24172BK30 23272BK
1,560 2,510 3,250 3,900 4,800
3,550 5,150 7,100 7,500 9,650
159,000 256,000 330,000 400,000 490,000
360,000 525,000 725,000 765,000 985,000
500 470 410 390 390
770 720 640 590 590
23976 23076B 24076B 23176B 24176B
23976K 23076BK 24076BK30 23176BK 24176BK30
Cr
Cor
Cr
Cor
5 6
2,930 3,500
5,150 5,350
298,000 360,000
525,000 545,000
90 118 160 160 200 140 192 185
3 4 4 5 5 5 5 7.5
1,110 1,890 2,450 2,750 3,300 2,670 3,450 3,600
2,320 3,550 4,950 5,000 6,400 4,350 6,000 5,400
113,000 193,000 250,000 280,000 340,000 272,000 355,000 365,000
320
440 480 480 540 540 580 580
90 121 160 176 218 150 208
3 4 4 5 5 5 5
1,140 1,960 2,510 3,100 3,850 3,100 4,000
2,460 3,850 5,200 5,800 7,300 5,050 7,050
340
460 520 520 580 580 620
90 133 180 190 243 224
3 5 5 5 5 6
1,220 2,310 3,000 3,600 4,600 4,450
360
480 540 540 600 600 650
90 134 180 192 243 232
3 5 5 5 5 6
380
520 560 560 620 620
106 135 180 194 243
4 5 5 5 5
grease
1 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 2 Smallest allowable dimension for chamfer dimension r. B-242
tapered bore
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
da
mm Da
ras
min
max
max
302 308
478 552
314 318 318 322 322 322 322 336
Axial load factors
Mass (approx.) kg cylindrical bore
tapered bore
e
Y1
Y2
Yo
4 5
0.36 0.31
1.90 2.16
2.83 3.22
1.86 2.12
150 224
145 220
406 442 442 478 478 518 518 584
2.5 3 3 4 4 4 4 6
0.20 0.25 0.34 0.32 0.40 0.26 0.36 0.32
3.34 2.66 1.97 2.11 1.69 2.57 1.88 2.13
4.98 3.96 2.93 3.15 2.51 3.83 2.79 3.17
3.27 2.60 1.92 2.07 1.65 2.51 1.83 2.08
40 72.4 98 131 161 141 193 270
38.7 70.2 96.4 127 159 138 187 265
334 338 338 342 342 342 342
426 462 462 518 518 558 558
2.5 3 3 4 4 4 4
0.19 0.25 0.33 0.33 0.40 0.26 0.36
3.50 2.73 2.06 2.06 1.67 2.57 1.86
5.21 4.06 3.07 3.07 2.48 3.83 2.77
3.42 2.67 2.02 2.02 1.63 2.51 1.82
43 78.2 103 167 207 172 243
41.7 75.5 101 162 204 168 236
354 362 362 362 362 368
446 498 498 558 558 592
2.5 4 4 4 4 5
0.17 0.25 0.34 0.33 0.42 0.37
3.91 2.68 1.98 2.05 1.61 1.84
5.83 3.99 2.95 3.06 2.39 2.75
3.83 2.62 1.94 2.01 1.57 1.80
44.7 104 140 210 269 300
43.3 100 138 204 265 291
374 382 382 382 382 388
466 518 518 578 578 622
2.5 4 4 4 4 5
0.17 0.24 0.33 0.32 0.40 0.36
3.99 2.78 2.06 2.11 1.67 1.87
5.93 4.14 3.07 3.15 2.48 2.78
3.90 2.72 2.02 2.07 1.63 1.83
47.2 110 147 222 281 339
45.7 106 145 215 277 329
398 402 402 402 402
502 538 538 598 598
3 4 4 4 4
0.19 0.24 0.30 0.31 0.39
3.54 2.87 2.23 2.16 1.73
5.27 4.27 3.32 3.22 2.58
3.46 2.80 2.18 2.12 1.69
69.9 115 153 235 292
67.7 111 150 228 287
Note: Please refer to page B-230 for outer ring oil inlet and oil groove dimensions.
B-243
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 380∼500mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN
Limiting speeds
Bearing numbers
static kgf
rpm
1
oil
cylindrical bore
360
550
23276B
23276BK
161,000 370,000 305,000 615,000 390,000 855,000 425,000 820,000 520,000 1,060,000 595,000 1,080,000
470 440 390 360 360 340
720 680 600 560 560 520
23980 23080B 24080B 23180B 24180B 23280B
23980K 23080BK 24080BK30 23180BK 24180BK30 23280BK
3,850 6,400 8,450 9,950 12,200 12,000
166,000 390,000 315,000 650,000 395,000 865,000 530,000 1,020,000 625,000 1,240,000 665,000 1,230,000
450 420 370 350 350 320
690 640 570 530 530 490
23984 23084B 24084B 23184B 24184B 23284B
23984K 23084BK 24084BK30 23184BK 24184BK30 23284BK
2,030 3,300 4,300 5,200 6,450 6,900
4,700 6,850 9,450 10,100 13,100 12,800
207,000 480,000 335,000 695,000 440,000 960,000 530,000 1,030,000 660,000 1,330,000 705,000 1,310,000
420 400 350 330 330 300
650 610 540 500 500 470
23988 23088B 24088B 23188B 24188B 23288B
23988K 23088BK 24088BK30 23188BK 24188BK30 23288BK
4 6 6 7.5 7.5 7.5
2,100 3,600 4,600 5,700 7,100 7,750
4,950 7,450 10,200 11,400 14,500 14,500
214,000 365,000 470,000 585,000 725,000 790,000
505,000 760,000 1,040,000 1,160,000 1,480,000 1,470,000
400 370 330 310 310 290
620 580 510 470 470 440
23992 23092B 24092B 23192B 24192B 23292B
23992K 23092BK 24092BK30 23192BK 24192BK30 23292BK
128 165 218 248 308 310
5 6 6 7.5 7.5 7.5
2,330 3,650 4,650 6,200 7,450 8,300
5,500 7,700 10,500 12,300 15,300 15,500
238,000 370,000 475,000 635,000 760,000 845,000
565,000 785,000 1,070,000 1,260,000 1,560,000 1,580,000
380 360 320 290 290 270
590 550 490 450 450 420
23996 23096B 24096B 23196B 24196B 23296B
23996K 23096BK 24096BK30 23196BK 24196BK30 23296BK
128 167
5 6
2,370 3,850
5,600 8,300
242,000 390,000
570,000 845,000
360 340
560 530
239/500 239/500K 230/500B 230/500BK
d
D
B
380
680
240
400
540 600 600 650 650 720
rs min
2
Cr
Cor
Cr
Cor
6
5,200
9,650
530,000
985,000
106 148 200 200 250 256
4 5 5 6 6 6
1,580 2,980 3,850 4,200 5,100 5,850
3,650 6,050 8,400 8,050 10,300 10,600
420
560 620 620 700 700 760
106 150 200 224 280 272
4 5 5 6 6 7.5
1,630 3,100 3,850 5,200 6,150 6,550
440
600 650 650 720 720 790
118 157 212 226 280 280
4 6 6 6 6 7.5
460
620 680 680 760 760 830
118 163 218 240 300 296
480
650 700 700 790 790 870
500
670 720
grease
1 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 2 Smallest allowable dimension for chamfer dimension r. B-244
tapered bore
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
da
mm Da
ras
min
max
max
408
652
418 422 422 428 428 428
Axial load factors
Mass (approx.) kg cylindrical bore
tapered bore
e
Y1
Y2
Yo
5
0.36
1.89
2.82
1.85
380
369
522 578 578 622 622 692
3 4 4 5 5 5
0.18 0.24 0.32 0.31 0.38 0.37
3.71 2.80 2.09 2.21 1.77 1.81
5.53 4.16 3.11 3.28 2.63 2.69
3.63 2.73 2.04 2.16 1.73 1.77
73 149 202 264 329 457
70.7 144 200 256 324 443
438 442 442 448 448 456
542 598 598 672 672 724
3 4 4 5 5 6
0.17 0.24 0.32 0.32 0.40 0.36
3.95 2.85 2.13 2.11 1.69 1.86
5.88 4.24 3.18 3.15 2.51 2.77
3.86 2.78 2.09 2.07 1.65 1.82
76.2 157 210 354 440 544
73.8 152 207 343 433 528
458 468 468 468 468 476
582 622 622 692 692 754
3 5 5 5 5 6
0.18 0.24 0.32 0.31 0.39 0.36
3.66 2.85 2.11 2.15 1.75 1.88
5.46 4.24 3.15 3.21 2.61 2.80
3.58 2.78 2.07 2.11 1.71 1.84
101 181 245 370 456 600
98 175 241 358 449 582
478 488 488 496 496 496
602 652 652 724 724 794
3 5 5 6 6 6
0.17 0.23 0.31 0.31 0.39 0.36
3.95 2.88 2.15 2.14 1.71 1.87
5.88 4.29 3.21 3.19 2.55 2.78
3.86 2.82 2.11 2.10 1.67 1.83
107 206 276 443 550 704
104 200 272 429 541 683
502 508 508 516 516 516
628 672 672 754 754 834
4 5 5 6 6 6
0.18 0.23 0.30 0.31 0.39 0.36
3.85 2.94 2.22 2.15 1.74 1.87
5.73 4.38 3.30 3.21 2.59 2.78
3.76 2.88 2.17 2.11 1.70 1.83
123 217 285 492 608 814
119 209 280 477 600 790
522 528
648 692
4 5
0.17 0.23
4.02 2.98
5.98 4.44
3.93 2.91
131 226
127 218
Note: Please refer to page B-230 for outer ring oil inlet and oil groove dimensions.
B-245
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 500∼670mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 2
Limiting speeds
Bearing numbers
static kgf
rpm
1
oil
cylindrical bore
300 280 280 260
460 430 430 400
240/500B 231/500B 241/500B 232/500B
240/500BK30 231/500BK 241/500BK30 232/500BK
655,000 955,000 1,290,000 1,450,000 1,770,000 2,020,000
340 320 280 260 260 240
520 490 430 400 400 370
239/530 230/530B 240/530B 231/530B 241/530B 232/530B
239/530K 230/530BK 240/530BK30 231/530BK 241/530BK30 232/530BK
288,000 490,000 620,000 780,000 1,010,000 1,130,000
680,000 1,070,000 1,440,000 1,580,000 2,120,000 2,150,000
320 300 260 240 240 220
490 450 400 370 370 340
239/560 230/560B 240/560B 231/560B 241/560B 232/560B
239/560K 230/560BK 240/560BK30 231/560BK 241/560BK30 232/560BK
7,800 12,000 15,600 18,400 23,200 23,700
325,000 535,000 655,000 920,000 1,090,000 1,240,000
795,000 1,220,000 1,590,000 1,880,000 2,360,000 2,420,000
290 270 240 220 220 210
450 420 370 340 340 320
239/600 230/600B 240/600B 231/600B 241/600B 232/600B
239/600K 230/600BK 240/600BK30 231/600BK 241/600BK30 232/600BK
3,700 5,900 7,550 9,600 11,600 13,700
9,250 13,000 17,900 19,900 25,000 26,800
375,000 600,000 770,000 975,000 1,180,000 1,400,000
945,000 1,330,000 1,830,000 2,030,000 2,550,000 2,740,000
270 260 230 210 210 190
420 400 350 320 320 300
239/630 230/630B 240/630B 231/630B 241/630B 232/630B
239/630K 230/630BK 240/630BK30 231/630BK 241/630BK30 232/630BK
4,100 6,550 8,650 11,000 12,700 16,100
10,300 14,600 20,600 22,800 28,000 32,000
420,000 665,000 885,000 1,120,000 1,300,000 1,640,000
1,050,000 1,490,000 2,100,000 2,330,000 2,850,000 3,250,000
250 240 210 190 190 180
390 360 320 300 300 280
239/670 230/670B 240/670B 231/670B 241/670B 232/670B
239/670K 230/670BK 240/670BK30 231/670BK 241/670BK30 232/670BK
d
D
B
rs min
Cr
Cor
Cr
500
720 830 830 920
218 264 325 336
6 7.5 7.5 7.5
4,750 6,950 8,050 9,400
530
710 780 780 870 870 980
136 185 250 272 335 355
5 6 6 7.5 7.5 9.5
560
750 820 820 920 920 1,030
140 195 258 280 355 365
600
800 870 870 980 980 1,090
Cor
10,900 13,700 16,700 17,800
485,000 705,000 825,000 960,000
1,110,000 1,400,000 1,700,000 1,820,000
2,640 4,400 5,600 7,000 8,300 10,400
6,450 269,000 9,350 445,000 12,700 570,000 14,200 715,000 17,400 850,000 19,800 1,060,000
5 6 6 7.5 7.5 9.5
2,830 4,800 6,100 7,650 9,950 11,100
6,700 10,500 14,100 15,500 20,800 21,100
150 200 272 300 375 388
5 6 6 7.5 7.5 9.5
3,150 5,250 6,450 9,000 10,700 12,200
630
850 920 920 1,030 1,030 1,150
165 212 290 315 400 412
6 7.5 7.5 7.5 7.5 12
670
900 980 980 1,090 1,090 1,220
170 230 308 336 412 438
6 7.5 7.5 7.5 7.5 12
grease
1 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 2 Smallest allowable dimension for chamfer dimension r. B-246
tapered bore
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
Mass (approx.)
mm
kg
da
Da
ras
min
max
max
528 536 536 536
692 794 794 884
552 558 558 566 566 574
cylindrical bore
tapered bore
e
Y1
Y2
Yo
5 6 6 6
0.30 0.32 0.39 0.39
2.28 2.12 1.72 1.74
3.40 3.16 2.57 2.59
2.23 2.08 1.69 1.70
688 752 752 834 834 936
4 5 5 6 6 8
0.17 0.22 0.30 0.30 0.38 0.39
3.94 3.03 2.24 2.22 1.79 1.74
5.87 4.52 3.33 3.30 2.67 2.59
3.86 2.97 2.19 2.17 1.75 1.70
157 306 413 653 800 1,200
152 295 406 633 788 1,170
582 588 588 596 596 604
728 792 792 884 884 986
4 5 5 6 6 8
0.16 0.22 0.30 0.30 0.39 0.36
4.09 3.03 2.29 2.27 1.75 1.88
6.09 4.51 3.40 3.38 2.61 2.80
4.00 2.96 2.24 2.22 1.71 1.84
182 353 467 752 948 1,360
176 340 459 729 934 1,320
622 628 628 636 636 644
778 842 842 944 944 1,046
4 5 5 6 6 8
0.18 0.21 0.29 0.30 0.37 0.36
3.85 3.17 2.33 2.22 1.81 1.86
5.73 4.72 3.47 3.30 2.70 2.77
3.76 3.10 2.28 2.17 1.77 1.82
218 400 544 908 1,130 1,540
211 386 535 880 1,110 1,490
658 666 666 666 666 684
822 884 884 994 994 1,096
5 6 6 6 6 10
0.18 0.22 0.30 0.30 0.38 0.36
3.66 3.14 2.28 2.27 1.78 1.87
5.45 4.67 3.40 3.38 2.66 2.78
3.58 3.07 2.23 2.22 1.74 1.83
277 481 657 1,050 1,330 1,900
268 464 646 1,020 1,310 1,840
698 706 706 706 706 724
872 944 944 1,054 1,054 1,166
5 6 6 6 6 10
0.18 0.22 0.29 0.30 0.37 0.36
3.76 3.07 2.29 2.22 1.83 1.89
5.59 4.57 3.41 3.30 2.73 2.81
3.67 3.00 2.24 2.17 1.79 1.85
317 594 794 1,250 1,530 2,270
307 573 781 1,210 1,510 2,200
295 584 716 1,000
Note: Please refer to page B-230 for outer ring oil inlet and oil groove dimensions.
B-247
290 566 705 971
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 710∼1060mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
kN B
rs min
2
Limiting speeds kgf
Cr
Cor
Cr
Bearing numbers
static rpm Cor
grease
oil
cylindrical bore
1
tapered bore
710
950 1,030 1,030 1,150 1,150 1,280
180 236 315 345 438 450
6 7.5 7.5 9.5 9.5 12
4,450 7,200 9,300 11,600 14,500 16,300
11,500 16,200 22,500 24,900 32,000 32,500
450,000 730,000 945,000 1,190,000 1,470,000 1,660,000
1,170,000 1,650,000 2,300,000 2,540,000 3,250,000 3,300,000
240 220 200 180 180 170
370 340 300 280 280 260
239/710 230/710B 240/710B 231/710B 241/710B 232/710B
239/710K 230/710BK 240/710BK30 231/710BK 241/710BK30 232/710BK
750
1,000 1,090 1,090 1,220 1,360
185 250 335 365 475
6 7.5 7.5 9.5 15
5,000 8,150 10,100 12,800 18,200
13,000 18,300 24,600 27,200 36,500
510,000 835,000 1,030,000 1,310,000 1,860,000
1,330,000 1,860,000 2,500,000 2,780,000 3,750,000
220 210 180 170 160
340 320 280 260 240
239/750 230/750B 240/750B 231/750B 232/750B
239/750K 230/750BK 240/750BK30 231/750BK 232/750BK
800
1,060 1,150 1,150 1,280
195 258 345 375
6 7.5 7.5 9.5
5,400 8,400 11,200 14,400
13,700 19,500 27,800 31,000
550,000 860,000 1,140,000 1,460,000
1,400,000 1,990,000 2,840,000 3,150,000
200 190 170 150
310 290 260 240
239/800 230/800B 240/800B 231/800B
239/800K 230/800BK 240/800BK30 231/800BK
850
1,120 1,220 1,220 1,360
200 272 365 400
6 7.5 7.5 12
5,850 9,750 12,500 15,500
15,100 22,700 31,500 34,000
595,000 995,000 1,270,000 1,580,000
1,540,000 2,310,000 3,200,000 3,500,000
190 170 150 140
290 270 240 220
239/850 230/850B 240/850B 231/850B
239/850K 230/850BK 240/850BK30 231/850BK
900
1,180 1,280 1,280 1,420
206 280 375 412
6 7.5 7.5 12
6,650 10,300 13,200 16,800
17,300 24,700 33,500 38,000
675,000 1,050,000 1,350,000 1,720,000
1,770,000 2,520,000 3,450,000 3,850,000
170 160 140 130
270 250 220 200
239/900 230/900B 240/900B 231/900B
239/900K 230/900BK 240/900BK30 231/900BK
950
1,250 1,360 1,360
224 300 412
7.5 7.5 7.5
7,750 11,500 15,500
20,500 28,400 40,000
790,000 2,090,000 1,180,000 2,900,000 1,580,000 4,100,000
160 150 130
250 230 210
239/950 239/950K 230/950B 230/950BK 240/950B 240/950BK30
1000
1,320 1,420 1,420
236 308 412
7.5 7.5 7.5
8,600 12,400 16,000
22,700 30,000 42,000
875,000 2,310,000 1,260,000 3,050,000 1,640,000 4,250,000
150 140 120
230 220 190
239/1000 239/1000K 230/1000B 230/1000BK 240/1000B 240/1000BK30
1060
1,400 1,500 1,500
250 325 438
7.5 9.5 9.5
9,300 13,600 17,800
24,700 33,500 47,000
950,000 2,520,000 1,390,000 3,400,000 1,810,000 4,800,000
140 130 120
210 200 180
239/1060 239/1060K 230/1060B 230/1060BK 240/1060B 240/1060BK30
1 Bearings appended with "K" have a tapered bore ratio of 1:12; bearings appended with "K30" have a tapered bore ratio of 1:30. 2 Smallest allowable dimension for chamfer dimension r. B-248
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
da
mm Da
ras
min
max
max
e
Y1
Y2
738 746 746 754 754 764
922 994 994 1,106 1,106 1,226
5 6 6 8 8 10
0.18 0.22 0.29 0.29 0.37 0.35
3.85 3.02 2.36 2.32 1.80 1.91
778 786 786 794 814
972 1,054 1,054 1,176 1,296
5 6 6 8 12
0.17 0.21 0.29 0.29 0.35
828 836 836 844
1,032 1,114 1,114 1,236
5 6 6 8
878 886 886 904
1,092 1,184 1,184 1,306
928 936 936 954
Mass (approx.) kg Yo
cylindrical bore
tapered bore
5.73 4.50 3.51 3.45 2.69 2.84
3.76 2.96 2.31 2.27 1.76 1.87
375 663 884 1,420 1,800 2,540
363 640 870 1,380 1,770 2,470
3.90 3.20 2.35 2.32 1.92
5.81 4.76 3.49 3.45 2.86
3.81 3.13 2.29 2.27 1.88
412 790 1,060 1,700 3,050
399 763 1,040 1,650 2,960
0.17 0.21 0.28 0.29
4.05 3.15 2.41 2.32
6.04 4.69 3.59 3.45
3.96 3.08 2.36 2.27
487 890 1,190 1,890
471 859 1,170 1,830
5 6 6 10
0.16 0.20 0.28 0.28
4.25 3.32 2.42 2.37
6.32 4.95 3.61 3.54
4.15 3.25 2.37 2.32
550 1,050 1,410 2,270
532 1,010 1,390 2,200
1,152 1,244 1,244 1,366
5 6 6 10
0.16 0.20 0.27 0.28
4.32 3.32 2.48 2.42
6.44 4.95 3.70 3.60
4.23 3.25 2.43 2.36
623 1,170 1,570 2,500
603 1,130 1,540 2,420
986 986 986
1,214 1,324 1,324
6 6 6
0.16 0.21 0.28
4.20 3.26 2.39
6.26 4.85 3.56
4.11 3.18 2.34
774 1,430 1,970
749 1,380 1,940
1,036 1,036 1,036
1,284 1,384 1,384
6 6 6
0.16 0.20 0.27
4.21 3.37 2.51
6.26 5.02 3.73
4.11 3.29 2.45
916 1,580 2,110
887 1,520 2,080
1,096 1,104 1,104
1,364 1,456 1,456
6 8 8
0.16 0.20 0.27
4.28 3.36 2.49
6.37 5.00 3.71
4.19 3.28 2.44
1,090 1,850 2,450
1,060 1,790 2,140
Note: Please refer to page B-230 for outer ring oil inlet and oil groove dimensions.
B-249
●Spherical Roller Bearings
B r r
D
d
d
Cylindrical bore
Tapered bore taper 1:12
d 1120∼1400mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm d
D
kN B
rs min
2
Limiting speeds kgf
Cr
Cor
Bearing numbers
static
Cr
rpm Cor
grease
oil
cylindrical bore
1
tapered bore
1120
1,460 1,580 1,580
250 345 462
7.5 9.5 9.5
9,850 15,600 19,500
26,700 39,000 52,500
1,000,000 2,720,000 1,590,000 4,000,000 1,990,000 5,350,000
130 120 110
200 190 160
239/1120 239/1120K 230/1120B 230/1120BK 240/1120B 240/1120BK30
1180
1,540
272
7.5
11,000
29,800
1,120,000 3,050,000
120
180
239/1180
239/1180K
1250
1,630
280
7.5
12,100
33,500
1,230,000 3,400,000
110
160
239/1250
239/1250K
1320
1,720
300
7.5
13,600
38,000
1,390,000 3,900,000
95
150
239/1320
239/1320K
1400
1,820
315
9.5
15,100
43,000
1,540,000 4,400,000
86
130
239/1400
239/1400K
1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Smallest allowable dimension for chamfer dimension r.
B-250
●Spherical Roller Bearings
ra Equivalent bearing load dynamic Pr＝XFr＋YFa Fa Fa ≦e ＞e Fr Fr X Y X Y 1 Y1 0.67 Y2 static Por＝Fr＋Yo Fa For values of e， Y1， Y2 and Yo see the table below.
ra Da
da
Abutment and fillet dimensions
Constant
Axial load factors
da
mm Da
ras
min
max
max
e
Y1
Y2
1,156 1,164 1,164
1,424 1,536 1,536
6 8 8
0.15 0.21 0.27
4.42 3.29 2.50
1,216
1,504
6
0.15
1,286
1,594
6
1,356
1,684
1,444
1,776
Mass (approx.) kg Yo
cylindrical bore
tapered bore
6.58 4.80 3.72
4.32 3.21 2.44
1,140 2,160 2,890
1,100 2,090 2,840
4.40
6.55
4.30
1,390
1,340
0.15
4.42
6.58
4.32
1,600
1,550
6
0.16
4.34
6.46
4.24
1,900
1,840
8
0.15
4.39
6.54
4.29
2,230
2,160
Note: Please refer to page B-230 for outer ring oil inlet and oil groove dimensions.
B-251
●Adapter (For spherical roller bearings)
d1 35∼70mm Boundary dimensions
Bearing numbers
mm d1
B1
1
Abutment and fillet dimensions
Mass
mm d2
B2
da
db
Ba
min
max
min
kg Da min
35
40
45
50
55
60
65
1 Indicates adapter mass. Note: 1. Please refer to page B-232 to B-235 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Please refer to page D-2 to D-10 and D-12 to D-14 for adapter locknut and washer dimensions. 3. Adapter numbers with the suffix "X" signify narrow slit type adapters, and use washers with straight inner tabs.
B-252
ras max
max
(approx.)
●Adapter (For spherical roller bearings) B2 ra
Ba
B1 d1 d2
db da
Da
d1 75∼115mm Boundary dimensions
Bearing numbers
1
Abutment and fillet dimensions
mm
Mass
mm
kg
da
db
Ba
min
max
min
min
max
max
(approx.)
100.5 100.5 110 110
12 12 6 6
135 ― ― ―
140 140 166 166
2 2 2.5 2.5
1.18 1.18 1.18 1.45
107.5 107.5 110 116 117
10 10 18 6 6
144 ― ― ― ―
150 150 150 176 176
2 2 2 2.5 2.5
1.37 1.37 1.69 1.37 1.69
117 123 123
9 7 7
― ― ―
158 186 186
2 2.5 2.5
1.56 1.56 1.92
107 110 107 110
123 122 130 129
8 19 7 7
― ― ― ―
168 168 201 201
2 2 2.5 2.5
1.69 2.15 1.69 2.15
23122BK;H3122X 22222BK;H 322X 23222BK;H2322X 21322K ;H 322X 22322BK;H2322X
117 117 121 117 121
127 137 135 142 142
7 6 17 9 7
― ― ― ― ―
170 188 188 226 226
2 2 2 2.5 2.5
2.25 2.18 2.74 2.18 2.74
22 22 22 22 22
23024BK;H3024X 23124BK;H3124X 22224BK;H3124X 23224BK;H2324X 22324BK;H2324X
127 128 128 131 131
136 140 150 147 154
7 7 11 17 7
― ― ― ― ―
170 190 203 203 246
2 2 2 2 2.5
1.93 2.64 2.64 3.19 3.19
23 23 23 23
23026BK;H3026 23126BK;H3126 22226BK;H3126 23226BK;H2326
137 138 138 142
147 152 161 160
8 8 8 21
― ― ― ―
190 200 216 216
2 2 2.5 2.5
2.85 3.66 3.66 4.6
d1
B1
d2
B2
75
63 63 63 82
110 110 110 110
18 18 18 18
22217EK;H 317X 22217BK;H 317X 21317K ;H 317X 22317BK;H2317X
91 91 91 94
80
65 65 86 65 86
120 120 120 120 120
18 18 18 18 18
22218EK;H 318X 22218BK;H 318X 23218BK;H2318X 21318K ;H 318X 22318BK;H2318X
96 96 99 96 99
85
68 68 90
125 125 125
19 19 19
22219BK;H 319X 21319K ;H 319X 22319BK;H2319X
102 102 105
90
71 97 71 97
130 130 130 130
20 20 20 20
22220BK;H 320X 23220BK;H2320X 21320K ;H 320X 22320BK;H2320X
100
81 77 105 77 105
145 145 145 145 145
21 21 21 21 21
110
72 88 88 112 112
145 155 155 155 155
115
80 92 92 121
155 165 165 165
Da
1 Indicates adapter mass. Note: 1. Please refer to page B-234 to B-237 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Please refer to page D-2 to D-10 and D-12 to D-14 for adapter locknut and washer dimensions. 3. Adapter numbers with the suffix "X" signify narrow slit type adapters, and use washers with straight inner tabs.
B-253
ras
●Adapter (For spherical roller bearings) B2 ra
Ba
B1 d1 d2
db da
Da
d1 115∼170mm Boundary dimensions
Bearing numbers
1
Abutment and fillet dimensions
mm
Mass
mm
kg
da
db
Ba
Da
ras
min
max
min
max
max
(approx.)
22326BK;H2326
142
167
8
262
3
4.6
24 24 24 24 24
23028BK;H3028 23128BK;H3128 22228BK;H3128 23228BK;H2328 22328BK;H2328
147 149 149 152 152
158 165 173 172 179
8 8 8 22 8
200 213 236 236 282
2 2 2.5 2.5 3
3.16 4.34 4.34 5.55 5.55
180 195 195 195 195
26 26 26 26 26
23030BK;H3030 23130BK;H3130 22230BK;H3130 23230BK;H2330 22330BK;H2330
158 160 160 163 163
170 178 188 185 192
8 8 15 20 8
213 238 256 256 302
2 2 2.5 2.5 3
3.89 5.52 5.52 6.63 6.63
140
93 119 119 147 147
190 210 210 210 210
28 28 28 28 28
23032BK;H3032 23132BK;H3132 22232BK;H3132 23232BK;H2332 22332BK;H2332
168 170 170 174 174
181 190 200 198 205
8 8 14 18 8
228 258 276 276 322
2 2 2.5 2.5 3
5.21 7.67 7.67 9.14 9.14
150
101 122 122 154 154
200 220 220 220 220
29 29 29 29 29
23034BK;H3034 23134BK;H3134 22234BK;H3134 23234BK;H2334 22334BK;H2334
179 180 180 185 185
193 202 212 218 218
8 8 10 18 8
248 268 292 292 342
2 2 3 3 3
5.99 8.38 8.38 10.2 10.2
160
109 131 131 161 161
210 230 230 230 230
30 30 30 30 30
23036BK;H3036 23136BK;H3136 22236BK;H3136 23236BK;H2336 22336BK;H2336
189 191 191 195 195
204 215 225 223 230
8 8 18 22 8
268 286 302 302 362
2 2.5 3 3 3
6.83 9.5 9.5 11.3 11.3
170
112 141 141 169 169
220 240 240 240 240
31 31 31 31 31
23038BK;H3038 23138BK;H3138 22238BK;H3138 23238BK;H2338 22338BK;H2338
199 202 202 206 206
215 228 238 236 243
9 9 21 21 9
278 306 322 322 378
2 2.5 3 3 4
7.45 10.8 10.8 12.6 12.6
d1
B1
d2
B2
115
121
165
23
125
82 97 97 131 131
165 180 180 180 180
135
87 111 111 139 139
1 Indicates adapter mass. Note: 1. Please refer to page B-236 to B-239 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Please refer to page D-2 to D-10 and D-12 to D-14 for adapter locknut and washer dimensions.
B-254
●Adapter (For spherical roller bearings) B3
B2 ra
Ba
B1
B1 d1 d2
d1 d2
d1≦180mm
ra
Ba
db da
Da
db da
Da
d1≧200mm
d1 180∼300mm Boundary dimensions
Bearing numbers
1
Abutment and fillet dimensions
Mass
mm
kg
mm da
db
Ba
Da
ras
min
max
min
max
max
(approx.)
23040BK;H3040 23140BK;H3140 22240BK;H3140 23240BK;H2340 22340BK;H2340
210 212 212 216 216
227 240 250 248 255
10 10 24 20 10
298 326 342 342 398
2 2.5 3 3 4
9.19 12.1 12.1 13.9 13.9
41 44 44 44 44
23044BK;H3044 23144BK;H3144 22244BK;H3144 23244BK;H2344 22344BK;H2344
231 233 233 236 236
250 264 274 271 278
12 10 22 11 10
326 352 382 382 438
2.5 3 3 3 4
10.2 14.7 14.7 16.7 16.7
― ― ― ― ―
46 46 46 46 46
23048BK;H3048 23148BK;H3148 22248BK;H3148 23248BK;H2348 22348BK;H2348
251 254 254 257 257
272 288 298 295 302
11 11 19 6 11
346 382 422 422 478
2.5 3 3 3 4
13.2 17.3 17.3 19.7 19.7
310 330 330 330 330
― ― ― ― ―
46 49 49 49 49
23052BK;H3052 23152BK;H3152 22252BK;H3152 23252BK;H2352 22352BK;H2352
272 276 276 278 278
295 313 323 319 326
13 11 25 2 11
382 422 458 458 512
3 3 4 4 5
15.1 22 22 24.2 24.2
260
152 192 192 221 221
330 350 350 350 350
― ― ― ― ―
50 51 51 51 51
23056BK;H3056 23156BK;H3156 22256BK;H3156 23256BK;H2356 22356BK;H2356
292 296 296 299 299
317 336 346 343 350
12 12 28 11 12
402 438 478 478 552
3 4 4 4 5
17.7 24.5 24.5 27.8 27.8
280
168 208 208 240
360 380 380 380
― ― ― ―
54 53 53 53
23060BK;H3060 23160BK;H3160 22260BK;H3160 23260BK;H3260
313 317 317 321
340 361 371 368
12 12 32 12
442 478 518 518
3 4 4 4
22.8 30.2 30.2 34.1
300
171 226 226
380 400 400
― ― ―
55 56 56
23064BK;H3064 23164BK;H3164 22264BK;H3164
334 339 339
363 384 394
13 13 39
462 518 558
3 4 4
24.6 34.9 34.9
d1
B1
d2
B2
B3
180
120 150 150 176 176
240 250 250 250 250
32 32 32 32 32
― ― ― ― ―
200
126 158 158 183 183
260 280 280 280 280
― ― ― ― ―
220
133 169 169 196 196
290 300 300 300 300
240
145 187 187 208 208
1 Indicates adapter mass. Note: 1. Please refer to page B-238 to B-243 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Please refer to page D-2 to D-10 and D-12 to D-14 for adapter locknut and washer dimensions.
B-255
●Adapter (For spherical roller bearings) B3 ra
Ba
B1 db da
d1 d2
Da
d1 300∼470mm Boundary dimensions
Bearing numbers
1
Abutment and fillet dimensions
Mass
mm
kg
mm da
db
Ba
Da
ras
min
max
min
max
max
(approx.)
23264BK;H3264
343
393
13
558
4
39.3
58 72 72
23068BK;H3068 23168BK;H3168 23268BK;H3268
355 360 364
386 409 421
14 14 14
498 558 592
4 4 5
28.7 49.5 54.6
420 460 460
58 75 75
23072BK;H3072 23172BK;H3172 23272BK;H3272
375 380 385
408 432 442
14 14 14
518 578 622
4 4 5
30.5 54.2 60.2
193 264 310
450 490 490
62 77 77
23076BK;H3076 23176BK;H3176 23276BK;H3276
396 401 405
431 456 465
15 15 15
538 598 652
4 4 5
35.8 61.7 69.6
380
210 272 328
470 520 520
66 82 82
23080BK;H3080 23180BK;H3180 23280BK;H3280
417 421 427
454 479 488
15 15 15
578 622 692
4 5 5
41.3 70.6 81
400
212 304 352
490 540 540
66 90 90
23084BK;H3084 23184BK;H3184 23284BK;H3284
437 443 448
476 504 515
16 16 16
598 672 724
4 5 6
43.7 84.2 94
410
228 307 361
520 560 560
77 90 90
23088BK;H3088 23188BK;H3188 23288BK;H3288
458 464 469
499 527 539
17 17 17
622 692 754
5 5 6
65.2 104 118
430
234 326 382
540 580 580
77 95 95
23092BK;H3092 23192BK;H3192 23292BK;H3292
478 485 491
521 551 563
17 17 17
652 724 794
5 6 6
69.5 116 132
450
237 335 397
560 620 620
77 95 95
23096BK;H3096 23196BK;H3196 23296BK;H3296
499 505 512
544 575 590
18 18 18
672 754 834
5 6 6
73.3 133 152
470
247 356 428
580 630 630
85 100 100
230/500BK;H30/500 231/500BK;H31/500 232/500BK;H32/500
519 527 534
566 600 618
18 18 18
692 794 884
5 6 6
81.8 143 166
d1
B1
d2
B3
300
258
400
56
320
187 254 288
400 440 440
340
188 259 299
360
1 Indicates adapter mass. Note: 1. Please refer to page B-242 to B-247 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Please refer to page D-2 to D-10 and D-12 to D-14 for adapter locknut and washer dimensions.
B-256
Boundary dimensions
Bearing numbers
Abutment and fillet dimensions
3
Mass
Appro-
4
●Withdrawal Sleeves (For spherical roller bearings)
G1 ra
B3 d1
da
Da
B4
G
d1 75∼115mm Boundary dimensions
Bearing numbers
mm 1
3
Abutment and fillet dimensions
Mass
mm G1
da
2
d1
G
B3
B4
75
M90×2 M90×2 M90×2 M90×2
48 48 48 71
8 8 8 12
52 52 52 75
22216EK 22216BK 21316K 22316BK
80
M95×2 M95×2 M95×2 M95×2
52 52 52 74
9 9 9 13
56 56 56 78
85
M100×2 M100×2 M100×2 M100×2 M100×2
53 53 63 53 79
9 9 10 9 14
90
M105×2 M105×2 M105×2
57 57 85
95
M110×2 M110×2 M110×2 M110×2
kg Da
min
max
; AH 316 ; AH 316 ; AH 316 ; AHX 2316
90 90 92 92
94.5 ― ― ―
22217EK 22217BK 21317K 22317BK
; AHX 317 ; AHX 317 ; AHX 317 ; AHX 2317
95 95 99 99
57 57 67 57 83
22218EK 22218BK 23218BK 21318K 22318BK
; AHX 318 ; AHX 318 ; AHX 3218 ; AHX 318 ; AHX 2318
10 10 16
61 61 89
22219BK 21319K 22319BK
59 73 59 90
10 11 10 16
63 77 63 94
22220BK 23220BK 21320K 22320BK
105
M120×2 M115×2 M120×2 M125×2 M120×2 M125×2
68 82 68 82 63 98
11 13 11 11 12 16
115
M130×2 M125×2 M125×2 M130×2
60 73 73 75
13 13 13 12
min
4
Appropriate nut no.
ras max
max
(approx.)
125.5 ― ― ―
130 130 158 158
2 2 2 2
0.365 0.365 0.365 0.597
AN18 AN18 AN18 AN18
100.5 ― ― ―
135 ― ― ―
140 140 166 166
2 2 2.5 2.5
0.429 0.429 0.429 0.67
AN19 AN19 AN19 AN19
100 100 100 104 104
107.5 ― ― ― ―
144 ― ― ― ―
150 150 150 176 176
2 2 2 2.5 2.5
0.461 0.461 0.576 0.461 0.779
AN20 AN20 AN20 AN20 AN20
; AHX 319 ; AHX 319 ; AHX 2319
107 109 109
― ― ―
― ― ―
158 186 186
2 2.5 2.5
0.532 0.532 0.886
AN21 AN21 AN21
; AHX 320 ; AHX 3220 ; AHX 320 ; AHX 2320
112 112 114 114
― ― ― ―
― ― ― ―
168 168 201 201
2 2 2.5 2.5
0.582 0.767 0.582 0.998
AN22 AN22 AN22 AN22
72 91 72 86 67 102
23122BK ; AHX 3122 24122BK30 ; AH 24122 22222BK ; AHX 3122 23222BK ; AHX 3222 21322K ; AHX 322 22322BK ; AHX 2322
120 120 122 122 124 124
― ― ― ― ― ―
― ― ― ― ― ―
170 170 188 188 226 226
2 2 2 2 2.5 2.5
0.76 0.73 0.76 1.04 0.663 1.35
AN24 AN23 AN24 AN25 AN24 AN25
64 82 82 79
23024BK ; AHX 3024 24024BK30 ; AH 24024 24024CK30; AH 24024 23124BK ; AHX 3124
130 130 130 130
― ― ― ―
― ― ― ―
170 170 170 190
2 2 2 2
0.75 0.65 0.65 0.95
AN26 AN25 AN25 AN26
1 Standard thread shapes and dimensions are as per JIS B0207 (metric thread). 2 Indicates reference dimensions before attachment of withdrawal sleeve. 3 Indicates withdrawal sleeve mass. 4 Indicates number of nut to be used at time of disassembly. See pages D-2 to D-10 for nut dimensions. Note: 1. Please refer to page B-234, B-237 for bearing dimensions, rated loads, allowable rotations, and mass.
B-258
●Withdrawal Sleeves (For spherical roller bearings)
G1 ra
B3 d1
da
Da
B4
G
d1 115∼150mm Boundary dimensions
Bearing numbers
Mass
mm Da
kg
da
ras
min
max
max
(approx.)
mm d1
1
G
2
3
Abutment and fillet dimensions
4
Appropriate nut no.
B3
G1
B4
115
M130×2 M130×2 M135×2 M135×2
93 75 90 105
13 12 13 17
102 79 94 109
24124BK30 22224BK 23224BK 22324BK
;AH 24124 ;AHX 3124 ;AHX 3224 ;AHX 2324
130 132 132 134
190 203 203 246
2 2 2 2.5
1 0.95 1.3 1.6
AN26 AN26 AN27 AN27
125
M140×2 M135×2 M135×2 M140×2 M140×2 M140×2 M145×2 M145×2
67 83 83 78 94 78 98 115
14 14 14 12 14 12 15 19
71 93 93 82 104 82 102 119
23026BK ;AHX 3026 24026BK30 ;AH 24026 24026CK30 ;AH 24026 23126BK ;AHX 3126 24126BK30 ;AH 24126 22226BK ;AHX 3126 23226BK ;AHX 3226 22326BK ;AHX 2326
140 140 140 140 140 144 144 148
190 190 190 200 200 216 216 262
2 2 2 2 2 2.5 2.5 3
0.93 0.84 0.84 1.08 1.11 1.08 1.58 1.97
AN28 AN27 AN27 AN28 AN28 AN28 AN29 AN29
135
M150×2 M145×2 M145×2 M150×2 M150×2 M150×2 M155×3 M155×3
68 83 83 83 99 83 104 125
14 14 14 14 14 14 15 20
73 93 93 88 109 88 109 130
23028BK ;AHX 3028 24028BK30 ;AH 24028 24028CK30 ;AH 24028 23128BK ;AHX 3128 24128BK30 ;AH 24128 22228BK ;AHX 3128 23228BK ;AHX 3228 22328BK ;AHX 2328
150 150 150 152 152 154 154 158
200 200 200 213 213 236 236 282
2 2 2 2 2 2.5 2.5 3
1.01 0.91 0.91 1.28 1.25 1.28 1.84 2.33
AN30 AN29 AN29 AN30 AN30 AN30 AN31 AN31
145
M160×3 M155×3 M155×3 M165×3 M160×3 M165×3 M165×3 M165×3
72 90 90 96 115 96 114 135
15 15 15 15 15 15 17 24
77 101 101 101 126 101 119 140
23030BK ;AHX 3030 24030BK30 ;AH 24030 24030CK30 ;AH 24030 23130BK ;AHX 3130 24130BK30 ;AH 24130 22230BK ;AHX 3130 23230BK ;AHX 3230 22330BK ;AHX 2330
162 162 162 162 162 164 164 168
213 213 213 238 238 256 256 302
2 2 2 2 2 2.5 2.5 3
1.15 1.04 1.04 1.79 1.56 1.79 2.22 2.82
AN32 AN31 AN31 AN33 AN32 AN33 AN33 AN33
150
M170×3 M170×3 M170×3 M180×3
77 95 95 103
16 15 15 16
82 106 106 108
23032BK ;AH 3032 24032BK30 ;AH 24032 24032CK30 ;AH 24032 23132BK ;AH 3132
172 172 172 172
228 228 228 258
2 2 2 2
2.06 2.33 2.33 3.21
AN34 AN34 AN34 AN36
1 Standard thread shapes and dimensions are as per JIS B0207 (metric thread). 2 Indicates reference dimensions before attachment of withdrawal sleeve. 3 Indicates withdrawal sleeve mass. 4 Indicates number of nut to be used at time of disassembly. See pages D-2 to D-10 for nut dimensions. Note: 1. Please refer to page B-236, B-239 for bearing dimensions, rated loads, allowable rotations, and mass.
B-259
●Withdrawal Sleeves (For spherical roller bearings)
G1 ra
B3 d1
da
Da
B4
G
d1 150∼190mm Boundary dimensions
Bearing numbers
Mass
mm Da
kg
da
ras
min
max
max
(approx.)
mm d1
1
G
2
3
Abutment and fillet dimensions
4
Appropriate nut no.
B3
G1
B4
150
M170×3 M180×3 M180×3 M180×3
124 103 124 140
15 16 20 24
135 108 130 146
24132BK30 22232BK 23232BK 22332BK
;AH 24132 ;AH 3132 ;AH 3232 ;AH 2332
172 174 174 178
258 276 276 322
2 2.5 2.5 3
3 3.21 4.08 4.72
AN34 AN36 AN36 AN36
160
M180×3 M180×3 M180×3 M190×3 M180×3 M190×3 M190×3 M190×3
85 106 106 104 125 104 134 146
17 16 16 16 16 16 24 24
90 117 117 109 136 109 140 152
23034BK ;AH 3034 24034BK30 ;AH 24034 24034CK30 ;AH 24034 23134BK ;AH 3134 24134BK30 ;AH 24134 22234BK ;AH 3134 23234BK ;AH 3234 22334BK ;AH 2334
182 182 182 182 182 188 188 188
248 248 248 268 268 292 292 342
2 2 2 2 2 3 3 3
2.43 2.8 2.8 3.4 3.21 3.4 4.8 5.25
AN36 AN36 AN36 AN38 AN36 AN38 AN38 AN38
170
M190×3 M190×3 M190×3 M200×3 M190×3 M200×3 M200×3 M200×3
92 116 116 116 134 105 140 154
17 16 16 19 16 17 24 26
98 127 127 122 145 110 146 160
23036BK ;AH 3036 24036BK30 ;AH 24036 24036CK30 ;AH 24036 23136BK ;AH 3136 24136BK30 ;AH 24136 22236BK ;AH 2236 23236BK ;AH 3236 22336BK ;AH 2336
192 192 192 194 194 198 198 198
268 268 268 286 286 302 302 362
2 2 2 2.5 2.5 3 3 3
2.81 3.1 3.1 4.22 3.68 3.73 5.32 5.83
AN38 AN38 AN38 AN40 AN38 AN40 AN40 AN40
180
Tr205×4 M200×3 M200×3 Tr210×4 M200×3 Tr210×4 Tr210×4 Tr210×4
96 118 118 125 146 112 145 160
18 18 18 20 18 18 25 26
102 131 131 131 159 117 152 167
23038BK ;AH 3038 24038BK30 ;AH 24038 24038CK30 ;AH 24038 23138BK ;AH 3138 24138BK30 ;AH 24138 22238BK ;AH 2238 23238BK ;AH 3238 22338BK ;AH 2338
202 202 202 204 204 208 208 212
278 278 278 306 306 322 322 378
2 2 2 2.5 2.5 3 3 4
3.32 3.5 3.5 4.89 4.28 4.25 5.9 6.63
HNL41 AN40 AN40 HN42 AN40 HN42 HN42 HN42
190
Tr215×4 Tr210×4 Tr220×4 Tr210×4
102 127 134 158
19 18 21 18
108 140 140 171
23040BK 24040BK30 23140BK 24140BK30
212 212 214 214
298 298 326 326
2 2 2.5 2.5
3.8 3.93 5.49 5.1
HNL43 HN42 HN44 HN42
;AH 3040 ;AH 24040 ;AH 3140 ;AH 24140
1 Standard thread shapes and dimensions are as per JIS B0207 (metric thread). 2 Indicates reference dimensions before attachment of withdrawal sleeve. 3 Indicates withdrawal sleeve mass. 4 Indicates number of nut to be used at time of disassembly. See pages D-2 to D-10 for nut dimensions. Note: 1. Please refer to page B-238, B-241 for bearing dimensions, rated loads, allowable rotations, and mass.
B-260
●Withdrawal Sleeves (For spherical roller bearings)
G1 ra
B3 d1
da
Da
B4
G
d1 190∼260mm Boundary dimensions
Bearing numbers
d1
G
2
B3
G1
B4
Appropriate nut no.
mm Da
kg
da
ras
min
max
max
(approx.)
218 218 222
342 342 398
3 3 4
4.68 6.68 7.54
HN44 HN44 HN44
190
Tr220×4 Tr220×4 Tr220×4
118 153 170
19 25 30
123 160 177
22240BK 23240BK 22340BK
;AH ;AH ;AH
200
Tr235×4 Tr230×4 Tr240×4 Tr230×4 Tr240×4 Tr240×4 Tr240×4
111 138 145 170 130 181 181
20 20 23 20 20 30 30
117 152 151 184 136 189 189
23044BK 24044BK30 23144BK 24144BK30 22244BK 23244BK 22344BK
;AH 3044 ;AH 24044H ;AH 3144 ;AH 24144H ;AH 2244 ;AH 2344 ;AH 2344
234 234 238 238 238 238 242
326 326 352 352 382 382 438
2.5 2.5 3 3 3 3 4
7.4 8.25 10.4 10.2 9.1 13.5 13.5
HNL47 HN46 HN48 HN46 HN48 HN48 HN48
220
Tr260×4 Tr250×4 Tr260×4 Tr260×4 Tr260×4 Tr260×4 Tr260×4
116 138 154 180 144 189 189
21 20 25 20 21 30 30
123 153 161 195 150 197 197
23048BK 24048BK30 23148BK 24148BK30 22248BK 23248BK 22348BK
;AH 3048 ;AH 24048H ;AH 3148 ;AH 24148H ;AH 2248 ;AH 2348 ;AH 2348
254 254 258 258 258 258 262
346 346 382 382 422 422 478
2.5 2.5 3 3 3 3 4
8.75 8.98 12 12.5 11.1 15.5 15.5
HNL52 HN50 HN52 HN52 HN52 HN52 HN52
240
Tr280×4 Tr270×4 Tr290×4 Tr280×4 Tr290×4 Tr290×4 Tr290×4
128 162 172 202 155 205 205
23 22 26 22 23 30 30
135 178 179 218 161 213 213
23052BK 24052BK30 23152BK 24152BK30 22252BK 23252BK 22352BK
;AH 3052 ;AH 24052 ;AH 3152 ;AH 24152H ;AH 2252 ;AH 2352 ;AH 2352
278 278 278 278 282 282 288
382 382 422 422 458 458 512
3 3 3 3 4 4 5
10.7 11.8 16.2 15.4 14 19.6 19.6
HNL56 HN54 HN58 HN56 HN58 HN58 HN58
Tr300×4 Tr290×4 Tr310×5 Tr300×4 Tr310×5 Tr310×5 Tr310×5
131 162 175 202 155 212 212
24 22 28 22 24 30 30
139 179 183 219 163 220 220
23056BK 24056BK30 23156BK 24156BK30 22256BK 23256BK 22356BK
;AH3056 ;AH24056H ;AH3156 ;AH24156H ;AH2256 ;AH2356 ;AH2356
298 298 302 302 302 302 308
402 402 438 438 478 478 552
3 3 4 4 4 4 5
12 12.8 17.5 16.3 15.2 21.6 21.6
HNL60 HN58 HN62 HN60 HN62 HN62 HN62
260
2240 3240 2340
4
Mass
mm 1
3
Abutment and fillet dimensions
1 Standard thread shapes and dimensions are as per JIS B0207 (metric thread). 2 Indicates reference dimensions before attachment of withdrawal sleeve. 3 Indicates withdrawal sleeve mass. 4 Indicates number of nut to be used at time of disassembly. See pages D-2 to D-10 for nut dimensions. Note: 1. Please refer to page B-240, B-243 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Withdrawal sleeve numbers appended with the suffix "H" signify high pressure oil (hydraulic) design. (See page B-231)
B-261
●Withdrawal Sleeves (For spherical roller bearings)
G1 ra
B3 d1
da
Da
B4
G
d1 280∼400mm Boundary dimensions
Bearing numbers
Mass
mm Da
kg
da
ras
min
max
max
mm d1
1
G
2
3
Abutment and fillet dimensions
4
Appropriate nut no.
B3
G1
B4
280
Tr320×5 Tr310×5 Tr330×5 Tr320×5 Tr330×5 Tr330×5
145 184 192 224 170 228
26 24 30 24 26 34
153 202 200 242 178 236
23060BK 24060BK30 23160BK 24160BK30 22260B 23260BK
;AH 3060 ;AH 24060H ;AH 3160 ;AH 24160H ;AH 2260 ;AH 3260
318 318 322 322 322 322
442 442 478 478 518 518
3 3 4 4 4 4
14.4 15.5 20.8 19.5 18.1 26
HNL64 HN62 HN66 HN64 HN66 HN66
300
Tr345×5 Tr330×5 Tr350×5 Tr340×5 Tr350×5 Tr350×5
149 184 209 242 180 246
27 24 31 24 27 36
157 202 217 260 190 254
23064BK 24064BK30 23164BK 24164BK30 22264BK 23264BK
;AH 3064 ;AH 24064H ;AH 3164 ;AH 24164H ;AH 2264 ;AH 3264
338 338 342 342 342 342
462 462 518 518 558 558
3 3 4 4 4 4
16 16.6 24.5 21.4 20.2 30.6
HNL69 HN66 HN70 HN68 HN70 HN70
320
Tr365×5 Tr360×5 Tr370×5 Tr360×5
162 206 225 269
28 26 33 26
171 225 234 288
23068BK 24068BK30 23168BK 24168BK30
;AH 3068 ;AH 24068H ;AH 3168 ;AH 24168H
362 362 362 362
498 498 558 558
4 4 4 4
19.5 21.7 29 27.1
HN73 HNL72 HN74 HN72
340
Tr385×5 Tr380×5 Tr400×5 Tr380×5
167 206 229 269
30 26 35 26
176 226 238 289
23072BK 24072BK30 23172BK 24172BK30
;AH 3072 ;AH 24072H ;AH 3172 ;AH 24172H
382 382 382 382
518 518 578 578
4 4 4 4
21 22.7 33 29.6
HNL77 HNL76 HN80 HN76
360
Tr410×5 Tr400×5 Tr420×5 Tr400×5
170 208 232 271
31 28 36 28
180 228 242 291
23076BK 24076BK30 23176BK 24176BK30
;AH 3076 ;AH 24076H ;AH 3176 ;AH 24176H
402 402 402 402
538 538 598 598
4 4 4 4
23.2 23.7 35.7 31.3
HNL82 HNL80 HN84 HN80
380
Tr430×5 Tr420×5 Tr440×5 Tr420×5
183 228 240 278
33 28 38 28
193 248 250 298
23080BK 24080BK30 23180BK 24180BK30
;AH 3080 ;AH 24080H ;AH 3180 ;AH 24180H
422 422 428 428
578 578 622 622
4 4 5 5
27.3 27.1 39.5 34.4
HNL86 HNL84 HN88 HN84
400
Tr450×5 Tr440×5
186 230
34 30
196 252
23084BK ;AH 3084 24084BK30 ;AH 24084H
442 442
598 598
4 4
29 29
HNL90 HNL88
(approx.)
1 Standard thread shapes and dimensions are as per JIS B0207 (metric thread). 2 Indicates reference dimensions before attachment of withdrawal sleeve. 3 Indicates withdrawal sleeve mass. 4 Indicates number of nut to be used at time of disassembly. See pages D-2 to D-10 for nut dimensions. Note: 1. Please refer to page B-242, B-245 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Withdrawal sleeve numbers appended with the suffix "H" signify high pressure oil (hydraulic) design. (See page B-231)
B-262
●Withdrawal Sleeves (For spherical roller bearings)
G1 ra
B3 d1
da
Da
B4
G
d1 400∼480mm Boundary dimensions
Bearing numbers
Mass
mm Da
kg
da
ras
min
max
max
mm d1
1
G
2
B3
G1
B4
3
Abutment and fillet dimensions
4
Appropriate nut no.
(approx.)
400
Tr460×5 Tr440×5
266 310
40 30
276 332
23184BK ; AH 3184 24184BK30 ; AH 24184H
448 448
672 672
5 5
46.5 40.3
HN92 HN88
420
Tr470×5 Tr460×5 Tr480×5
194 242 270
35 30 42
205 264 281
23088BK ; AHX 3088 24088BK30 ; AH 24088H 23188BK ; AHX 3188
468 468 468
622 622 692
5 5 5
32 31.9 49.8
HNL94 HNL92 HN96
440
Tr460×5 Tr490×5 Tr480×5 Tr510×6 Tr480×5
310 202 250 285 332
30 37 32 43 32
332 213 273 296 355
24188BK30 23092BK 24092BK30 23192BK 24192BK30
; AH 24188H ; AHX 3092 ; AH 24092H ; AHX 3192 ; AH 24192H
468 488 488 496 496
692 652 652 724 724
5 5 5 6 6
42.3 35.2 34.7 57.9 47.6
HN92 HNL98 HNL96 HN102 HN96
460
Tr520×6 Tr500×5 Tr530×6 Tr500×5
205 250 295 340
38 32 45 32
217 273 307 363
23096BK 24096BK30 23196BK 24196BK30
; AHX 3096 ; AH 24096H ; AHX 3196 ; AH 24196H
508 508 516 516
672 672 754 754
5 5 6 6
39.2 36.6 63.1 52.6
HNL104 HNL100 HN106 HN100
480
Tr540×6 Tr530×6 Tr550×6 Tr530×6
209 253 313 360
40 35 47 35
221 276 325 383
230/500BK ; AHX 30/500 240/500BK30 ; AH 240/500H 231/500BK ; AHX 31/500 241/500BK30 ; AH 241/500H
528 528 536 536
692 692 794 794
5 5 6 6
42.5 43.9 70.9 59
HNL108 HNL106 HN110 HN106
1 Standard thread shapes and dimensions are as per JIS B0207 (metric thread). 2 Indicates reference dimensions before attachment of withdrawal sleeve. 3 Indicates withdrawal sleeve mass. 4 Indicates number of nut to be used at time of disassembly. See pages D-2 to D-10 for nut dimensions. Note: 1. Please refer to page B-244, B-247 for bearing dimensions, rated loads, allowable rotations, and mass. 2. Withdrawal sleeve numbers appended with the suffix "H" signify high pressure oil (hydraulic) design. (See page B-231)
B-263
●Double Row Angular Contact Thrust Ball Bearings T1 C r1 r J d
EW D
d 25∼120mm Boundary dimensions dynamic mm
d small dia. large dia. type type
1
1
D
T1
C
rs min
r1s min
Ca
Basic load ratings static dynamic static kN kgf Coa
Ca
Coa
Limiting speeds
Bearing numbers
rpm grease
oil
small dia. type
large dia. type
25
27
47
28
14
0.6
0.3
13.2
28.3
1,350
2,890
7,600
10,000
562005
562005M
30
32
55
32
16
1
0.6
14.0
32.5
1,420
3,350
6,600
8,800
562006
562006M
35
37
62
34
17
1
0.6
19.7
48.5
2,010
4,950
6,000
8,100
562007
562007M
40
42
68
36
18
1
0.6
23.8
58.5
2,430
5,950
5,600
7,500
562008
562008M
45
47
75
38
19
1
0.6
26.0
69.0
2,650
7,000
5,200
6,900
562009
562009M
50
52
80
38
19
1
0.6
26.8
74.0
2,730
7,550
5,000
6,700
562010
562010M
55
57
90
44
22
1.1
0.6
37.0
99.0
3,800
10,100
4,400
5,900
562011
562011M
60
62
95
44
22
1.1
0.6
37.5
103
3,850
10,500
4,300
5,700
562012
562012M
65
67
100
44
22
1.1
0.6
39.0
111
3,950
11,300
4,200
5,600
562013
562013M
70
73
110
48
24
1.1
0.6
47.5
140
4,850
14,300
3,800
5,100
562014
562014M
75
78
115
48
24
1.1
0.6
49.0
150
5,000
15,300
3,700
4,900
562015
562015M
80
83
125
54
27
1.1
0.6
57.5
178
5,850
18,200
3,300
4,500
562016
562016M
85
88
130
54
27
1.1
0.6
58.0
184
5,950
18,800
3,300
4,400
562017
562017M
90
93
140
60
30
1.5
1
67.5
216
6,850
22,000
3,000
4,000
562018
562018M
95
98
145
60
30
1.5
1
68.0
223
6,950
22,700
2,900
3,900
562019
562019M
100
104 103
140 150
48 60
24 30
1.1 1.5
0.6 1
52.0 68.5
179 229
5,300 7,000
18,200 23,400
2,800 2,900
3,700 3,800
562920 562020
562920M 562020M
105
109 109
145 160
48 66
24 33
1.1 2
0.6 1
53.5 78.5
188 266
5,450 8,000
19,200 27,100
2,700 2,600
3,600 3,500
562921 562021
562921M 562021M
110
114 114
150 170
48 72
24 36
1.1 2
0.6 1
54.0 96.0
193 315
5,500 9,750
19,700 32,500
2,700 2,400
3,600 3,300
562922 562022
562922M 562022M
120
124 124
165 180
54 72
27 36
1.1 2
0.6 1
65.0 98.0
242 335
6,600 10,000
24,700 34,500
2,400 2,400
3,200 3,200
562924 562024
562924M 562024M
1 Minimum allowable dimension for chamfer dimension r or r1. 2 Ball's maximum circumscribed circle diameter dimension Note: 1. For small diameter type, the cylindrical bore or tapered bore is provided on the small diameter of double row cylindrical roller bearing series NNU49, NN49, and NN30; for large diameter type (marked with "M"), the tapered bore is provided on the large diameter side.
B-274
●Double Row Angular Contact Thrust Ball Bearings
r1a ra
Da
Wo
da
do Equivalent bearing load dynamic Pa＝Fa static Poa＝Fa
Oil inlet, oil groove dimensions Dimensions
Abutment and fillet dimensions
mm
Mass (approx.)
mm 2
Nominal outer diameter
kg
da
Da
ras
r1as
min
max
max
D
max
small dia. type
large dia. type
J
EW
40
41.3
33
44
0.6
0.3
0.197
0.177
47
48.5
40
50.5
1
0.6
0.301
0.28
53
55
45.5
57.5
1
0.6
0.394
0.35
58.5
61
50
63.5
1
0.6
0.482
0.44
65
67.5
56.5
70.5
1
0.6
0.605
0.54
70
72.5
61.5
75.5
1
0.6
0.638
0.59
78
81
67.5
84
1
0.6
0.988
0.9
83
86.1
72.5
89
1
0.6
1.06
0.96
88
91
77.5
94
1
0.6
1.08
1
97
100
85
104
1
0.6
1.53
1.4
102
105
90
109
1
0.6
1.61
1.5
110
113
96.5
119
1
0.6
2.2
2
115
118
102
124
1
0.6
2.31
2.1
123
127
109
133.5
1.5
1
3.05
2.7
128
132
114
138.5
1.5
1
3.18
2.9
126 133
129 137
114 119
134.5 143.5
1 1.5
0.6 1
2.04 3.32
1.8 3
131 142
134 146
119 127
139.5 152
1 2
0.6 1
2.12 4.19
1.87 3.7
136 150
139 155
124 133
144.5 162
1 2
0.6 1
2.21 5.35
1.95 4.9
150 160
154.5 165
138 143
159.5 172
1 2
0.6 1
3.06 5.73
2.75 5.2
over up to/incl
Units mm
Oil groove width Wo
Oil inlet do
Bearing series
Bearing series
5629
5629
5620
5620
―
50
―
4.5
―
2
50 80
80 150
― 8
6 8
― 4
3 4
Note: 2. The following bearing series can be assembled and used together: 5629 (M) and NNU49 (K) and NN49 (K); 5620 (M) and NN30 (K). 3. These are high precision bearings manufactured at NTN standard Class 5 or higher.
B-275
●Double Row Angular Contact Thrust Ball Bearings T1 C r1 r J d
EW D
d 130∼320mm Boundary dimensions dynamic mm
d small dia. large dia. type type
Basic load ratings static dynamic static kN kgf
Limiting speeds
Bearing numbers
rpm
D
T1
C
rs min
r1s min
Ca
Coa
Ca
Coa
grease
oil
small dia. type
large dia. type
1
1
130
134 135
180 200
60 84
30 42
1.5 2
1 1
75.0 139
284 460
7,650 14,200
28,900 47,000
2,200 2,100
2,900 2,800
562926 562026
562926M 562026M
140
144 145
190 210
60 84
30 42
1.5 2
1 1
76.0 144
297 495
7,750 14,600
30,500 50,500
2,100 2,000
2,800 2,700
562928 562028
562928M 562028M
150
155 155
210 225
72 90
36 45
2 2.1
1 1.1
107 147
410 525
10,900 15,000
41,500 53,500
1,800 1,900
2,400 2,500
562930 562030
562930M 562030M
160
165 165
220 240
72 96
36 48
2 2.1
1 1.1
109 172
430 620
11,100 17,600
44,000 63,000
1,800 1,700
2,300 2,300
562932 562032
562932M 562032M
170
175 176
230 260
72 108
36 54
2 2.1
1 1.1
111 202
450 735
11,300 20,600
46,000 75,000
1,700 1,600
2,300 2,100
562934 562034
562934M 562034M
180
186 187
250 280
84 120
42 60
2 2.1
1 1.1
156 234
605 865
15,900 23,900
62,000 88,000
1,500 1,400
2,000 1,900
562936 562036
562936M 562036M
190
196 197
260 290
84 120
42 60
2 2.1
1 1.1
157 236
625 890
16,000 24,100
63,500 91,000
1,500 1,400
2,000 1,900
562938 562038
562938M 562038M
200
207 207
280 310
96 132
48 66
2.1 2.1
1.1 1.1
185 271
735 1,030
18,800 75,000 27,700 105,000
1,300 1,300
1,800 1,700
562940 562040
562940M 562040M
220
227 228
300 340
96 144
48 72
2.1 3
1.1 1.1
190 335
795 1,270
19,400 81,000 34,000 129,000
1,300 1,200
1,700 1,500
562944 562044
562944M 562044M
240
247 248
320 360
96 144
48 72
2.1 3
1.1 1.1
196 340
850 1,350
20,000 87,000 35,000 137,000
1,200 1,100
1,600 1,500
562948 562048
562948M 562048M
260
269 269
360 400
120 164
60 82
2.1 4
1.1 1.5
261 405
1,130 1,710
26,600 116,000 41,500 174,000
1,000 980
1,400 1,300
562952 562052
562952M 562052M
280
289 289
380 420
120 164
60 82
2.1 4
1.1 1.5
265 415
1,190 1,810
27,000 121,000 42,500 185,000
980 950
1,300 1,300
562956 562056
562956M 562056M
300
310 310
420 460
144 190
72 95
3 4
1.1 1.5
335 475
1510 2,170
34,500 154,000 48,500 221,000
840 830
1,100 1,100
562960 562060
562960M 562060M
320
330 330
440 480
144 190
72 95
3 4
1.1 1.5
340 480
1,580 2,230
35,000 161,000 49,000 228,000
820 810
1,100 1,100
562964 562064
562964M 562064M
1 Minimum allowable dimension for chamfer dimension r or r1. 2 Ball's maximum circumscribed circle diameter dimension Note: 1. For small diameter type, the cylindrical bore or tapered bore is provided on the small diameter of double row cylindrical roller bearing series NNU49, NN49, and NN30; for large diameter type (marked with "M"), the tapered bore is provided on the large diameter side.
B-276
●Double Row Angular Contact Thrust Ball Bearings
r1a ra
Da
Wo
da
do Equivalent bearing load dynamic Pa＝Fa static Poa＝Fa
Oil inlet, oil groove dimensions Dimensions
Abutment and fillet dimensions
mm
Mass (approx.)
mm 2
Nominal outer diameter
kg
da
Da
ras
r1as
min
max
max
max
small dia. type
D large dia. type
J
EW
163 177
168 182
150 155
173.5 192
1.5 2
1 1
4.11 8.58
3.7 7.6
173 187
178 192
160 165
183.5 202
1.5 2
1 1
4.38 9.1
3.94 8.1
190 200
196.5 206
174 178
202 215
2 2
1 1
6.88 11.2
6.2 10
200 212
206.5 219
184 189
212 230
2 2
1 1
7.26 13.6
6.53 11.9
210 230
216.5 236
194 203
222 250
2 2
1 1
7.64 18.5
6.88 16.5
227 248
234 255
207 219
242 270
2 2
1 1
11.2 24.7
10 21.8
237 258
244 265
217 229
252 280
2 2
1 1
11.7 25.5
10.5 23
252 274
261 282
231 243
270 300
2 2
1 1
16.3 32.7
14.7 29.7
272 304
281 310
251 267
290 330
2 2.5
1 1
17.7 42.8
16 38.5
292 322
301 330
271 287
310 350
2 2.5
1 1
19 45.8
17 41.2
328 354
336 364
299 315
350 388
2 3
1 1.5
32.9 67
29.6 60.3
348 374
356 384
319 335
370 408
2 3
1 1.5
35 71.1
31.5 64
384 406
391 418
349 364
410 448
2.5 3
1 1.5
55 102
49.5 91.8
404 426
411 438
369 384
430 468
2.5 3
1 1.5
58.1 108
52.3 97.2
over up to/incl
Units mm
Oil groove width Wo
Oil inlet do
Bearing series
Bearing series
5629
5620
5629
5620
80 150
150 200
8 8
8 12
4 4
4 6
200 210
210 260
12 12
12 14
6 6
6 6
260 320
320 400
14 16
16 23
6 8
8 12
400
480
22
22
12
12
Note: 2. The following bearing series can be assembled and used together: 5629 (M) and NNU49 (K) and NN49 (K); 5620 (M) and NN30 (K). 3. These are high precision bearings manufactured at NTN standard Class 5 or higher.
B-277
●High Speed Duplex Angular Contact Thrust Ball Bearings r1
2B
r1 r
r
D
d
2a
d 25∼120mm Boundary dimensions dynamic kN
mm 1
1
Basic load ratings static dynamic
Limiting speeds static kgf
Bearing numbers
rpm
D
2B
rs min
r1s min
Ca
Coa
Ca
Coa
grease
oil
25
47
21
0.6
0.3
16.2
22.1
1,650
2,260
16,000
21,000
HTA005DB
30
55
24
1
0.6
17.5
26.7
1,780
2,720
14,000
18,000
HTA006DB
35
62
25.5
1
0.6
25.2
38.0
2,570
3,900
12,000
16,000
HTA007DB
40
68
27
1
0.6
27.2
45.0
2,780
4,550
11,000
14,000
HTA008DB
45
75
28.5
1
0.6
27.9
48.5
2,840
4,950
9,700
13,000
HTA009DB
50
80
28.5
1
0.6
29.6
55.5
3,000
5,650
8,800
12,000
HTA010DB
55
90
33
1.1
0.6
32.0
64.0
3,250
6,500
8,000
11,000
HTA011DB
60
95
33
1.1
0.6
33.5
69.5
3,400
7,100
7,400
9,800
HTA012DB
65
100
33
1.1
0.6
34.0
72.0
3,450
7,350
6,900
9,200
HTA013DB
70
110
36
1.1
0.6
41.5
91.0
4,250
9,300
6,400
8,500
HTA014DB
75
115
36
1.1
0.6
44.0
101
4,500
10,300
5,900
7,900
HTA015DB
80
125
40.5
1.1
0.6
50.5
117
5,150
11,900
5,600
7,400
HTA016DB
85
130
40.5
1.1
0.6
51.0
120
5,200
12,300
5,200
7,000
HTA017DB
90
140
45
1.5
1
59.5
141
6,050
14,400
5,000
6,600
HTA018DB
95
145
45
1.5
1
60.0
146
6,100
14,900
4,700
6,300
HTA019DB
100
140 150
36 45
1.1 1.5
0.6 1
47.0 62.0
121 156
4,800 6,350
12,300 15,900
4,800 4,500
6,300 5,900
HTA920DB HTA020DB
105
145 160
36 49.5
1.1 2
0.6 1
48.5 71.0
128 181
4,950 7,250
13,000 18,400
4,500 4,200
6,000 5,600
HTA921DB HTA021DB
110
150 170
36 54
1.1 2
0.6 1
49.0 88.5
131 222
5,000 9,000
13,400 22,700
4,300 4,000
5,800 5,400
HTA922DB HTA022DB
120
165 180
40.5 54
1.1 2
0.6 1
57.0 89.0
156 228
5,800 9,050
15,900 23,300
4,000 3,700
5,300 4,900
HTA924DB HTA024DB
d
1 Minimum allowable dimension for chamfer dimension r or r1. Note: 1. This bearing can be used in place of high speed double row angular contact thrust ball bearings. 2. These are high precision bearings manufactured at NTN standard Class 5 or higher. B-278
●High Speed Duplex Angular Contact Thrust Ball Bearings
r1a ra
Da
da
Abutment and fillet dimensions
Load center
Mass
mm
mm
kg
da
Da
ras
r1as
min
max
max
max
2a
(approx.)
31
43.5
0.6
0.3
40.5
0.138
37.5
49
1
0.5
47.5
0.22
42.5
56
1
0.5
53.5
0.274
47.5
62
1
0.5
59
0.342
52.5
69
1
0.5
64.5
0.438
57.5
74
1
0.5
69
0.476
65
84
1
0.6
77.5
0.754
70
89
1
0.6
81.5
0.808
75
94
1
0.6
85.5
0.858
80
104
1
0.6
93.5
1.19
85
109
1
0.6
97.5
1.26
90
119
1
0.6
106
1.73
95
124
1
0.6
110
1.82
102
132.5
1.5
0.8
119
2.4
107
137.5
1.5
0.8
123
2.52
110 112
134 142.5
1 1.5
0.6 0.8
119 127
1.6 2.62
115 119
139 152.5
1 2
0.6 1
123 136
1.66 3.38
120 124
144 162.5
1 2
0.6 1
127 144
1.72 4.22
130 134
159 172.5
1 2
0.6 1
140 153
2.4 4.5
B-279
●High Speed Duplex Angular Contact Thrust Ball Bearings r1
2B
r1 r
r
D
d
2a
d 130∼320mm Boundary dimensions dynamic kN
mm 1
1
Basic load ratings static dynamic
Limiting speeds static kgf
Bearing numbers
rpm grease
oil
19,600 33,000
3,600 3,400
4,800 4,500
HTA926DB HTA026DB
6,950 13,500
20,100 35,500
3,300 3,100
4,500 4,200
HTA928DB HTA028DB
270 370
9,750 13,800
27,600 37,500
3,100 2,900
4,200 3,900
HTA930DB HTA030DB
97.5 159
284 435
9,950 16,200
29,000 44,000
2,900 2,700
3,900 3,600
HTA932DB HTA032DB
1 1.1
99.5 182
298 500
10,100 18,600
30,500 51,000
2,700 2,500
3,600 3,400
HTA934DB HTA034DB
2 2.1
1 1.1
150 211
445 585
15,300 21,500
45,500 60,000
2,600 2,400
3,400 3,200
HTA936DB HTA036DB
63 90
2 2.1
1 1.1
153 214
470 605
15,600 21,800
48,000 61,500
2,400 2,200
3,200 3,000
HTA938DB HTA038DB
280 310
72 99
2.1 2.1
1.1 1.1
180 240
555 680
18,400 24,400
56,500 69,000
2,300 2,100
3,000 2,800
HTA940DB HTA040DB
220
300 340
72 108
2.1 3
1.1 1.1
185 300
595 860
18,900 30,500
60,500 87,500
2,100 1,900
2,700 2,600
HTA944DB HTA044DB
240
320 360
72 108
2.1 3
1.1 1.1
190 310
635 915
19,400 31,500
64,500 93,000
1,900 1,700
2,500 2,300
HTA948DB HTA048DB
260
360 400
90 123
2.1 4
1.1 1.5
250 365
830 1,160
25,400 37,500
84,500 118,000
1,700 1,600
2,300 2,100
HTA952DB HTA052DB
280
380 420
90 123
2.1 4
1.1 1.5
257 375
885 1,230
26,200 38,500
90,500 125,000
1,600 1,500
2,100 2,000
HTA956DB HTA056DB
300
420 460
108 142.5
3 4
1.1 1.5
325 430
1,130 1,470
33,500 44,000
115,000 150,000
1,400 1,400
1,900 1,800
HTA960DB HTA060DB
320
440 480
108 142.5
3 4
1.1 1.5
330 435
1,180 1,520
34,000 44,000
120,000 155,000
1,300 1,300
1,800 1,700
HTA964DB HTA064DB
D
2B
rs min
r1s min
130
180 200
45 63
1.5 2
140
190 210
45 63
150
210 225
160
Ca
Coa
1 1
68.0 128
193 325
6,950 13,000
1.5 2
1 1
68.0 132
197 345
54 67.5
2 2.1
1 1.1
95.5 136
220 240
54 72
2 2.1
1 1.1
170
230 260
54 81
2 2.1
180
250 280
63 90
190
260 290
200
d
Ca
Coa
1 Minimum allowable dimension for chamfer dimension r or r1. Note: 1. This bearing can be used in place of high speed double row angular contact thrust ball bearings. 2. These are high precision bearings manufactured at NTN standard Class 5 or higher. B-280
●High Speed Duplex Angular Contact Thrust Ball Bearings
r1a ra
Da
da
Abutment and fillet dimensions
Load center
Mass
mm
mm
kg
2a
(approx.)
da
Da
ras
r1as
min
max
max
max
142 144
172.5 192.5
1.5 2
0.8 1
153 170
3.26 6.66
152 154
182.5 202.5
1.5 2
1 1
161 178
3.46 7.08
164 167
202.5 215
2 2
1 1
178 191
5.4 8.82
174 177
212.5 230
2 2
1 1
186 204
5.7 10.6
184 187
222.5 250
2 2
1 1
195 221
6 14.5
194 197
242.5 270
2 2
1 1
212 238
9.38 20.6
204 207
252.5 280
2 2
1 1
220 246
9.82 21.4
217 217
270 300
2 2
1 1
237 263
13.7 27.4
237 240
290 330
2 2.5
1 1
254 289
14.8 35.8
257 260
310 350
2 2.5
1 1
271 306
16 38.2
277 283
350 388
2 3
1 1.5
305 338
27.8 56.2
297 303
370 408
2 3
1 1.5
322 355
28 59.6
320 323
410 448
2.5 3
1 1.5
356 390
46.6 85.6
340 343
430 468
2.5 3
1 1.5
373 407
49 90
B-281
●Self-Aligning Roller Thrust Bearings
d1 d
A
B1
r T
C r D1 D
d 60∼160mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
static kgf
Coa
1.5
283
805
28,900
82,000
2,600
45
2
330
945
33,500
96,500
150
48
2
365
1,040
37,000
75
160
51
2
415
1,190
80
170
54
2.1
460
85
150 180
39 58
1.5 2.1
90
155 190
39 60
100
170 210
110
Dimensions mm D1
d1
B1
C
A
29412
89
123
15
20
38
2,400
29413
96
133
16
21
42
106,000
2,200
29414
103
142
17
23
44
42,500
122,000
2,100
29415
109
152
18
24
47
1,380
47,000
141,000
1,900
29416
117
162
19
26
50
265 490
820 1,480
27,000 50,000
84,000 151,000
2,300 1,800
29317 29417
114 125
143.5 170
13 21
19 28
50 54
1.5 2.1
285 545
915 1,680
29,100 56,000
93,500 172,000
2,300 1,700
29318 29418
117 132
148.5 180
13 22
19 29
52 56
42 67
1.5 3
345 685
1,160 2130
35,500 69,500
118,000 217,000
2,100 1,500
29320 29420
129 146
163 200
14 24
20.8 32
58 62
190 230
48 73
2 3
445 845
1,500 2,620
45,000 86,500
152,000 267,000
1,800 1,400
29322 29422
143 162
182 220
16 26
23 35
64 69
120
210 250
54 78
2.1 4
535 975
1,770 3,050
54,500 99,000
181,000 310,000
1,600 1,300
29324 29424
159 174
200 236
18 29
26 37
70 74
130
225 270
58 85
2.1 4
615 1,080
2,100 3,550
62,500 110,000
215,000 360,000
1,500 1,200
29326 29426
171 189
215 255
19 31
28 41
76 81
140
240 280
60 85
2.1 4
685 1,110
2,360 3,750
70,000 114,000
241,000 385,000
1,400 1,200
29328 29428
183 199
230 268
20 31
29 41
82 86
150
215 250 300
39 60 90
1.5 2.1 4
340 675 1,280
1,340 2,390 4,350
34,500 68,500 131,000
136,000 243,000 445,000
1,800 1,400 1,100
29230 29330 29430
178 194 214
208 240 285
14 20 32
19 29 44
82 87 92
160
225 270 320
39 67 95
1.5 3 5
360 820 1,500
1,460 2,860 5,150
36,500 84,000 153,000
149,000 292,000 525,000
1,700 1,300 1,000
29232 29332 29432
188 208 229
219 260 306
14 24 34
19 32 45
86 92 99
D
T
rs min
60
130
42
65
140
70
Coa
Bearing numbers
oil
Ca
d
Ca
Limiting speeds rpm
1 Smallest allowable dimension for chamfer dimension r.
B-282
●Self-Aligning Roller Thrust Bearings
da
ra
ra
Equivalent bearing load dynamic Pa＝Fa＋1.2Fr static Poa＝Fa＋2.7Fr Fr when ≦0.55 Fa
Da
Abutment and fillet dimensions
Mass
da
mm Da
ras
kg
min
max
max
(approx.)
90
108
1.5
2.78
100
115
2
3.44
105
125
2
4.19
115
132
2
5.07
120
140
2
6.09
115 130
135 150
1.5 2
2.94 7.2
120 135
140 157
1.5 2
3.08 8.38
130 150
150 175
1.5 2.5
3.94 11.5
145 165
165 190
2 2.5
5.78 15
160 180
180 205
2 3
7.92 18.6
170 195
195 225
2 3
9.76 23.7
185 205
205 235
2 3
11.4 25.2
179 195 220
196 215 250
1.5 2 3
4.56 12 30.5
189 210 230
206 235 265
1.5 2.5 4
4.88 15.9 37
B-283
●Self-Aligning Roller Thrust Bearings
d1 d
A
B1
r T
C r D1 D
d 170∼320mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
static kgf
Limiting speeds rpm
Ca
Coa
Ca
Coa
oil
1.5 3 5
425 855 1,660
1,770 3,050 5,750
43,500 87,000 169,000
180,000 310,000 590,000
1,600 1,200 940
42 73 109
1.5 3 5
450 995 1,840
1,920 3,600 6,200
45,500 102,000 188,000
196,000 365,000 635,000
270 320 380
48 78 115
2 4 5
530 1,150 2,010
2,230 4,250 6,800
54,000 117,000 205,000
200
280 340 400
48 85 122
2 4 5
535 1,280 2,230
2,300 4,600 7,650
220
300 360 420
48 85 122
2 4 6
555 1,390 2,300
240
340 380 440
60 85 122
2.1 4 6
260
360 420 480
60 95 132
280
380 440 520
300
320
Bearing numbers
Dimensions mm D1
d1
B1
C
29234 29334 29434
198 216 243
233 270 324
15 23 37
20 32 50
92 96 104
1,600 1,100 890
29236 29336 29436
208 232 255
243 290 342
15 25 39
20 35 52
97 103 110
227,000 430,000 695,000
1,400 1,100 840
29238 29338 29438
223 246 271
262 308 360
15 27 41
24 38 55
104 110 117
54,500 131,000 228,000
234,000 470,000 780,000
1,400 980 790
29240 29340 29440
236 261 286
271 325 380
15 29 43
24 41 59
108 116 122
2,480 5,200 8,100
56,500 141,000 235,000
253,000 530,000 825,000
1,300 940 760
29244 29344 29444
254 280 308
292 345 400
15 29 43
24 41 58
117 125 132
825 1,380 2,400
3,600 5,250 8,700
84,000 140,000 245,000
365,000 535,000 885,000
1,100 910 740
29248 29348 29448
283 300 326
330 365 420
19 29 43
30 41 59
130 135 142
2.1 5 6
870 1,710 2,740
3,950 6,800 10,000
88,500 400,000 175,000 695,000 279,000 1,020,000
1,100 810 670
29252 29352 29452
302 329 357
350 405 460
19 32 48
30 45 64
139 148 154
60 95 145
2.1 5 6
875 1,800 3,350
4,050 7,250 12,400
89,000 415,000 184,000 740,000 340,000 1,270,000
1,000 790 610
29256 29356 29456
323 348 387
370 423 495
19 32 52
30 46 68
150 158 166
420 480 540
73 109 145
3 5 6
1,190 2,140 3,450
5,350 8,250 13,200
121,000 545,000 218,000 840,000 350,000 1,340,000
870 700 590
29260 29360 29460
353 379 402
405 460 515
21 37 52
38 50 70
162 168 175
440 500 580
73 109 155
3 5 7.5
1,260 2,220 3,700
5,800 8,800 14,200
128,000 595,000 226,000 895,000 375,000 1,440,000
840 680 550
29264 29364 29464
372 399 435
430 482 555
21 37 55
38 53 75
172 180 191
d
D
T
rs min
170
240 280 340
42 67 103
180
250 300 360
190
1 Smallest allowable dimension for chamfer dimension r.
B-284
A
●Self-Aligning Roller Thrust Bearings
da
ra
ra
Equivalent bearing load dynamic Pa＝Fa＋1.2Fr static Poa＝Fa＋2.7Fr Fr when ≦0.55 Fa
Da
Abutment and fillet dimensions
Mass
da
mm Da
ras
kg
min
max
max
(approx.)
201 220 245
218 245 285
1.5 2.5 4
6.02 16.6 45
211 235 260
228 260 300
1.5 2.5 4
6.27 21.2 52.9
225 250 275
245 275 320
2 3 4
8.8 26 62
235 265 290
255 295 335
2 3 4
9.14 31.9 73.3
260 285 310
275 315 355
2 3 5
9.94 34.5 77.8
285 300 330
305 330 375
2 3 5
17.5 36.6 82.6
305 330 360
325 365 405
2 4 5
18.6 52 108
325 350 390
345 390 440
2 4 5
19.8 54.6 140
355 380 410
380 420 460
2.5 4 5
30.9 75.8 147
375 400 435
400 440 495
2.5 4 6
33.5 79.9 181 B-285
●Self-Aligning Roller Thrust Bearings
d1 d
A
B1
r T
C r D1 D
d 340∼500mm Boundary dimensions
Basic load ratings static dynamic
dynamic mm
kN 1
static kgf
Coa
3 5 7.5
1,240 2,650 4,400
5,800 10,700 17,500
126,000 590,000 270,000 1,090,000 445,000 1,790,000
820 610 500
85 122 170
4 5 7.5
1,510 2,710 4,500
7,050 11,100 18,500
154,000 720,000 276,000 1,130,000 460,000 1,890,000
520 600 670
85 132 175
4 6 7.5
1,590 3,200 4,900
7,650 13,300 19,700
400
540 620 710
85 132 185
4 6 7.5
1,620 3,400 5,450
420
580 650 730
95 140 185
5 6 7.5
440
600 680 780
95 145 206
460
620 710 800
Dimensions mm D1
d1
B1
C
29268 29368 29468
395 428 462
445 520 590
21 41 61
37 59 82
183 192 201
720 590 490
29272 29372 29472
423 448 480
485 540 610
25 41 61
44 59 82
194 202 210
162,000 780,000 325,000 1,360,000 500,000 2,010,000
700 550 470
29276 29376 29476
441 477 504
505 580 640
27 44 63
42 63 85
202 216 230
7,950 14,500 22,100
165,000 810,000 345,000 1,480,000 555,000 2,250,000
680 530 440
29280 29380 29480
460 494 534
526 596 680
27 44 67
42 64 89
212 225 236
2,100 3,600 5,500
10,400 15,500 22,800
214,000 1,060,000 365,000 1,580,000 560,000 2,330,000
620 500 430
29284 29384 29484
489 520 556
564 626 700
30 48 67
46 68 89
225 235 244
5 6 9.5
2,150 3,800 6,400
10,900 16,400 26,200
219,000 1,110,000 385,000 1,680,000 650,000 2,670,000
600 480 390
29288 29388 29488
508 548 588
585 655 745
30 49 74
49 70 100
235 245 260
95 150 206
5 6 9.5
2,150 4,200 6,600
11,000 18,500 27,900
219,000 1,120,000 430,000 1,880,000 670,000 2,840,000
590 460 380
29292 29392 29492
530 567 608
605 685 765
30 51 74
46 72 100
245 257 272
480
650 730 850
103 150 224
5 6 9.5
2,400 4,200 7,500
12,000 18,700 31,500
245,000 1,220,000 430,000 1,910,000 765,000 3,200,000
550 450 350
29296 29396 29496
556 590 638
635 705 810
33 51 81
55 72 108
259 270 280
500
670 750 870
103 150 224
5 6 9.5
2,540 4,300 7,850
13,000 19,300 33,000
259,000 1,330,000 435,000 1,970,000 805,000 3,350,000
530 440 340
292/500 293/500 294/500
574 611 661
654 725 830
33 51 81
55 74 107
268 280 290
D
T
rs min
340
460 540 620
73 122 170
360
500 560 640
380
Coa
Bearing numbers
oil
Ca
d
Ca
Limiting speeds rpm
1 Smallest allowable dimension for chamfer dimension r.
B-286
A
●Self-Aligning Roller Thrust Bearings
da
ra
ra
Equivalent bearing load dynamic Pa＝Fa＋1.2Fr static Poa＝Fa＋2.7Fr Fr when ≦0.55 Fa
Da
Abutment and fillet dimensions
Mass
da
mm Da
ras
kg
min
max
max
395 430 465
420 470 530
2.5 4 6
34.4 107 230
420 450 485
455 495 550
3 4 6
50.5 112 240
440 480 510
475 525 575
3 5 6
53.4 143 267
460 500 540
490 550 610
3 5 6
55.8 148 321
490 525 560
525 575 630
4 5 6
76.6 172 333
510 550 595
545 600 670
4 5 8
79.6 195 428
530 575 615
570 630 690
4 5 8
82.8 221 443
555 595 645
595 650 730
4 5 8
98.6 228 552
575 615 670
615 670 750
4 5 8
102 235 569
(approx.)
B-287
Locknuts, Lockwashers & Lockplates Contents
Locknuts …………………………………… C- 2 Nuts ………………………………………… C- 8 Lockwashers ………………………………… C-12 Lockplates …………………………………… C-15
Locknuts, Lockwashers & Lockplates
●Locknuts For adapter sleeve, withdrawal sleeve and shaft Series AN g
B
b
30˚
G
h
r1
d2
d6 d1
Bearing numbers
Mass
Reference
mm
kg
bore no. lockof adapter washer No.
2
thread 1
G
AN00 AN01 AN02 AN03 AN04 AN05 AN06 AN07 AN08 AN09 AN10 AN11 AN12 AN13 AN14 AN15 AN16 AN17 AN18 AN19 AN20 AN21 AN22 AN23 AN24 AN25 AN26 AN27 AN28 AN29 AN30 AN31 AN32 AN33 AN34 AN36 AN38 AN40
Dimensions
M10×0.75 M12×1 M15×1 M17×1 M20×1 M25×1.5 M30×1.5 M35×1.5 M40×1.5 M45×1.5 M50×1.5 M55×2 M60×2 M65×2 M70×2 M75×2 M80×2 M85×2 M90×2 M95×2 M100×2 M105×2 M110×2 M115×2 M120×2 M125×2 M130×2 M135×2 M140×2 M145×2 M150×2 M155×3 M160×3 M165×3 M170×3 M180×3 M190×3 M200×3
3
r1 d2
d1
g
b
h
d6
B
max
(approx.)
18 22 25 28 32 38 45 52 58 65 70 75 80 85 92 98 105 110 120 125 130 140 145 150 155 160 165 175 180 190 195 200 210 210 220 230 240 250
13.5 17 21 24 26 32 38 44 50 56 61 67 73 79 85 90 95 102 108 113 120 126 133 137 138 148 149 160 160 171 171 182 182 193 193 203 214 226
14 18 21 24 28 34 41 48 53 60 65 69 74 79 85 91 98 103 112 117 122 130 135 140 145 150 155 163 168 178 183 186 196 196 206 214 224 234
3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 8 10 10 10 12 12 12 12 12 12 14 14 14 14 16 16 16 16 18 18 18
2 2 2 2 2 2 2 2 2.5 2.5 2.5 3 3 3 3.5 3.5 3.5 3.5 4 4 4 5 5 5 5 5 5 6 6 6 6 7 7 7 7 8 8 8
10.5 12.5 15.5 17.5 20.5 25.8 30.8 35.8 40.8 45.8 50.8 56 61 66 71 76 81 86 91 96 101 106 111 116 121 126 131 136 141 146 151 156.5 161.5 166.5 171.5 181.5 191.5 201.5
4 4 5 5 6 7 7 8 9 10 11 11 11 12 12 13 15 16 16 17 18 18 19 19 20 21 21 22 22 24 24 25 25 26 26 27 28 29
0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7
0.005 0.007 0.01 0.013 0.019 0.025 0.043 0.053 0.085 0.119 0.148 0.158 0.174 0.203 0.242 0.287 0.397 0.451 0.556 0.658 0.698 0.845 0.965 1.01 1.08 1.19 1.25 1.55 1.56 2 2.03 2.21 2.59 2.43 2.8 3.07 3.39 3.69
1 Standard thread shapes and dimensions are as per JIS B0207 (metric thread). 2 Uses adapter series H31, H2, and H23 3 Can also use washers with straight inner tabs (code "X").
C-2
− − − − 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 − 24 − 26 − 28 − 30 − 32 − 34 36 38 40
AW00 AW01 AW02 AW03 AW04 AW05 AW06 AW07 AW08 AW09 AW10 AW11 AW12 AW13 AW14 AW15 AW16 AW17 AW18 AW19 AW20 AW21 AW22 AW23 AW24 AW25 AW26 AW27 AW28 AW29 AW30 AW31 AW32 AW33 AW34 AW36 AW38 AW40
●Locknuts
Reference withdrawal sleeve No.
Shaft mm
AH30
AH240
AH31
AH241
AH2
AH32
AH3
AH23 (for shaft)
− − − − − − − − − − − − − − − − − − − − − − − − − − AHX3024 − AHX3026 − AHX3028 − AHX3030 − AH 3032 AH 3034 AH 3036 −
− − − − − − − − − − − − − − − − − − − − − − − − − AH24024 − AH24026 − AH24028 − AH24030 − − AH24032 AH24034 AH24036 AH24038
− − − − − − − − − − − − − − − − − − − − − − − − AHX3122 − AHX3124 − AHX3126 − AHX3128 − − AHX3130 − AH 3132 AH 3134 AH 3136
− − − − − − − − − − − − − − − − − − − − − − − AH24122 − − AH24124 − AH24126 − AH24128 − AH24130 − AH24132 AH24134 AH24136 AH24138
− − − − − − − − − AH208 AH209 AH210 AH211 AH212 − AH213 AH214 AH215 AH216 AH217 AH218 AH219 AH220 AH221 AH222 − AH224 − AH226 − AH228 − AH230 − AH232 AH234 AH236 −
C-3
− − − − − − − − − − − − − − − − − − − − AHX3218 − AHX3220 − − AHX3222 − AHX3224 − AHX3226 − AHX3228 − AHX3230 − AH 3232 AH 3234 AH 3236
− − − − − − − − − AH 308 AH 309 AHX310 AHX311 AHX312 − AH 313 AH 314 AH 315 AH 316 AHX317 AHX318 AHX319 AHX320 AHX321 AHX322 − AHX324 − AHX326 − AHX328 − − AHX330 − AH 332 AH 334 −
− − − − − − − − − AH 2308 AH 2309 AHX2310 AHX2311 AHX2312 − AH 2313 AHX2314 AHX2315 AHX2316 AHX2317 AHX2318 AHX2319 AHX2320 − − AHX2322 − AHX2324 − AHX2326 − AHX2328 − AHX2330 − AH 2332 AH 2334 AH 2336
10 12 15 17 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 180 190 200
●Locknuts For adapter sleeve and shaft Series AN B
g
r
b
30˚ G h
r1
s
dP
d6 d1
d2
Bearing numbers
Dimensions thread 1
AN 44 AN 48 AN 52 AN 56 AN 60 AN 64 AN 68 AN 72 AN 76 AN 80 AN 84 AN 88 AN 92 AN 96 AN100
Mass
mm
thread r1
2
G
d2
d1
g
b
h
d6
B
max
l
s
Tr220×4 Tr240×4 Tr260×4 Tr280×4 Tr300×4 Tr320×5 Tr340×5 Tr360×5 Tr380×5 Tr400×5 Tr420×5 Tr440×5 Tr460×5 Tr480×5 Tr500×5
280 300 330 350 380 400 440 460 490 520 540 560 580 620 630
250 270 300 320 340 360 400 420 450 470 490 510 540 560 580
260 280 306 326 356 376 410 430 454 484 504 520 540 580 584
20 20 24 24 24 24 28 28 32 32 32 36 36 36 40
10 10 12 12 12 12 15 15 18 18 18 20 20 20 23
222 242 262 282 302 322.5 342.5 362.5 382.5 402.5 422.5 442.5 462.5 482.5 502.5
32 34 36 38 40 42 55 58 60 62 70 70 75 75 80
0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1 1 1 1 1 1
15 15 18 18 18 18 21 21 21 27 27 27 27 27 27
M 8×1.25 M 8×1.25 M10×1.5 M10×1.5 M10×1.5 M10×1.5 M12×1.75 M12×1.75 M12×1.75 M16×2 M16×2 M16×2 M16×2 M16×2 M16×2
1 Standard thread shapes and dimensions are as per JIS B0216 (metric thread). 2 Thread dimensions are as per JIS B0205 (metric coarse screw thread type thread). 3 Applied to adapter series H31, H32, and H23
C-4
kg dP
(approx.)
238 258 281 301 326 345 372 392 414 439 459 477 497 527 539
5.2 5.95 8.05 9.05 11.8 13.1 23.1 25.1 30.9 36.9 43.5 45.3 50.4 62.2 63.3
●Locknuts
Reference 3 bore no. lockof adapter plate No.
Shaft
mm (for shaft)
44 48 52 56 60 64 68 72 76 80 84 88 92 96 /500
AL 44 AL 44 AL 52 AL 52 AL 60 AL 64 AL 68 AL 68 AL 76 AL 80 AL 80 AL 88 AL 88 AL 96 AL100
220 240 260 280 300 320 340 360 380 400 420 440 460 480 500
C-5
●Nuts For withdrawal and shaft Series HN g
B
b
30˚
G
h
r1
d2
d6 d1
Bearing numbers
Dimensions thread 1
HN 42 HN 44 HN 46 HN 48 HN 50 HN 52 HN 54 HN 56 HN 58 HN 60 HN 62 HN 64 HN 66 HN 68 HN 70 HN 72 HN 74 HN 76 HN 80 HN 84 HN 88 HN 92 HN 96 HN100 HN102 HN106 HN110
Mass
mm
Reference
kg AH240
r1
G
d2
d1
g
b
h
d6
B
max
(approx.)
Tr210×4 Tr220×4 Tr230×4 Tr240×4 Tr250×4 Tr260×4 Tr270×4 Tr280×4 Tr290×4 Tr300×4 Tr310×5 Tr320×5 Tr330×5 Tr340×5 Tr350×5 Tr360×5 Tr370×5 Tr380×5 Tr400×5 Tr420×5 Tr440×5 Tr460×5 Tr480×5 Tr500×5 Tr510×6 Tr530×6 Tr550×6
270 280 290 300 320 330 340 350 370 380 390 400 420 440 450 460 470 490 520 540 560 580 620 630 650 670 700
238 250 260 270 290 300 310 320 330 340 350 360 380 400 410 420 430 450 470 490 510 540 560 590 590 610 640
250 260 270 280 300 306 316 326 346 356 366 376 390 410 420 430 440 454 484 504 520 540 580 590 604 624 654
20 20 20 20 20 24 24 24 24 24 24 24 28 28 28 28 28 32 32 32 36 36 36 40 40 40 40
10 10 10 10 10 12 12 12 12 12 12 12 15 15 15 15 15 18 18 18 20 20 20 23 23 23 23
212 222 232 242 252 262 272 282 292 302 312.5 322.5 332.5 342.5 352.5 362.5 372.5 382.5 402.5 422.5 442.5 462.5 482.5 502.5 513 533 553
30 32 34 34 36 36 38 38 40 40 42 42 52 55 55 58 58 60 62 70 70 75 75 80 80 80 80
0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
4.75 5.35 5.8 6.2 7 8.55 9.2 10 11.8 12 13.4 13.5 20.4 24.5 25.2 27.5 28.2 33.5 40 46.9 48.5 55 67 69 75 78 92.5
1 Standard thread shapes and dimensions are as per JIS B0216 (metric block type thread).
C-8
withdrawal sleeve no. AH31 AH241
AH24040 − AH24044H − AH24048H − AH24052H − AH24056H − AH24060H − AH24064H − − − − − − − − − − − − − −
AH 3138 AH 3140 − AH 3144 − AH 3148 − − AH 3152 − AH 3156 − AH 3160 − AH 3164 − AH 3168 − AH 3172 AH 3176 AH 3180 AH 3184 AHX3188 − AHX3192 AHX3196 AHX31/500
AH24140 − AH24144H − − AH24148H − AH24152H − AH24156H − AH24160H − AH24164H − AH24168H − AH24172H AH24176H AH24180H AH24184H AH24188H AH24192H AH24196H − AH241/500H −
●Nuts
Reference
AH22
withdrawal sleeve no. AH32 AH23
AH2238 AH 3238 AH2240 AH 3240 − − AH2244 − − − AH2248 − − − − − AH2252 − − − AH2256 − − − AH2260 AH 3260 − − AH2264 AH 3264 − − AH 3268 − − − AH 3272 − AH 3276 − AH 3280 − AH 3284 − AHX3288 − − − AHX3292 − AHX3296 − AHX32/500 −
AH2338 AH2340 − AH2344 − AH2348 − − AH2352 − AH2356 − − − − − − − − − − − − − − − −
C-9
●Nuts For withdrawal and shaft Series HNL
B
g b
30˚
G
h
r1
d2
d6 d1
Bearing
Dimensions thread G
HNL 41 HNL 43 HNL 47 HNL 52 HNL 56 HNL 60 HNL 64 HNL 69 HNL 72 HNL 73 HNL 76 HNL 77 HNL 80 HNL 82 HNL 84 HNL 86 HNL 88 HNL 90 HNL 92 HNL 94 HNL 96 HNL 98 HNL100 HNL104 HNL106 HNL108
1
Tr205×4 Tr215×4 Tr235×4 Tr260×4 Tr280×4 Tr300×4 Tr320×5 Tr345×5 Tr360×5 Tr365×5 Tr380×5 Tr385×5 Tr400×5 Tr410×5 Tr420×5 Tr430×5 Tr440×5 Tr450×5 Tr460×5 Tr470×5 Tr480×5 Tr490×5 Tr500×5 Tr520×6 Tr530×6 Tr540×6
Mass
mm
Reference
kg AH30
r1 d2
d1
g
b
h
250 260 280 310 330 360 380 410 420 430 450 450 470 480 490 500 520 520 540 540 560 580 580 600 630 630
232 242 262 290 310 336 356 384 394 404 422 422 442 452 462 472 490 490 510 510 530 550 550 570 590 590
234 242 262 290 310 336 356 384 394 404 422 422 442 452 462 472 490 490 510 510 530 550 550 570 590 590
18 20 20 20 24 24 24 28 28 28 28 28 28 32 32 32 32 32 32 32 36 36 36 36 40 40
8 9 9 10 10 12 12 13 13 13 14 14 14 14 14 14 15 15 15 15 15 15 15 15 20 20
d6
207 217 237 262 282 302 322.5 347.5 362.5 367.5 382.5 387.5 402.5 412.5 422.5 432.5 442.5 452.5 462.5 472.5 482.5 492.5 502.5 523 533 543
B
max
(approx.)
30 30 34 34 38 42 42 45 45 48 48 48 52 52 52 52 60 60 60 60 60 60 68 68 68 68
0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
3.43 AH 3038 3.72 AH 3040 4.6 AH 3044 5.8 AH 3048 6.72 AH 3052 9.6 AH 3056 10.3 AH 3060 11.5 AH 3064 12.1 − 14.2 AH 3068 16 − 15 AH 3072 18.5 − 19 AH 3076 19.4 − 19.8 AH 3080 27 − 23.8 AH 3084 28 − 25 AHX3088 29.5 − 34 AHX3092 35 − 37 AHX3096 47 − 43.5 AHX30/500
1 Standard thread shapes and dimensions are as per JIS B0216 (metric block type thread).
C-10
withdrawal sleeve no. AH24D
− − − − − − − − AH24068H − AH24072H − AH24076H − AH24080H − AH24084H − AH24088H − AH24092H − AH24096H − AH240/500H −
AH2
AH238 AH240 AH244 AH248 AH252 AH256 − − − − − − − − − − − − − − − − − − − −
●Lockwashers Series AW
Bent inner tab type
Bearing numbers
Dimensions
Straight inner tab type
No.of tabs
mm bent inner straight inner tab type tab type
AW00 AW01 AW02 AW03 AW04 AW05 AW06 AW07 AW08 AW09 AW10 AW11 AW12 AW13 AW14 AW15 AW16 AW17 AW18 AW19 AW20 AW21 AW22 AW23 AW24 AW25 AW26 AW27 AW28 AW29 AW30 AW31 AW32 AW33 AW34 AW36 AW38 AW40
AW00X AW01X AW02X AW03X AW04X AW05X AW06X AW07X AW08X AW09X AW10X AW11X AW12X AW13X AW14X AW15X AW16X AW17X AW18X AW19X AW20X AW21X AW22X AW23X AW24X AW25X AW26X AW27X AW28X AW29X AW30X AW31X AW32X AW33X AW34X AW36X AW38X AW40X
d3
M
f1
B1
f
d4
d5
10 12 15 17 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 180 190 200
8.5 10.5 13.5 15.5 18.5 23 27.5 32.5 37.5 42.5 47.5 52.5 57.5 62.5 66.5 71.5 76.5 81.5 86.5 91.5 96.5 100.5 105.5 110.5 115 120 125 130 135 140 145 147.5 154 157.5 164 174 184 194
3 3 4 4 4 5 5 6 6 6 6 8 8 8 8 8 10 10 10 10 12 12 12 12 14 14 14 14 16 16 16 16 18 18 18 20 20 20
1 1 1 1 1 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.5 1.5 1.5 1.5 1.8 1.8 1.8 1.8 1.8 1.8 1.8 2 2 2 2 2 2 2 2 2.5 2.5 2.5 2.5 2.5 2.5 2.5
3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 8 10 10 10 12 12 12 12 12 12 14 14 14 14 16 16 16 16 18 18 18
13.5 17 21 24 26 32 38 44 50 56 61 67 73 79 85 90 95 102 108 113 120 126 133 137 138 148 149 160 160 171 171 182 182 193 193 203 214 226
21 25 28 32 36 42 49 57 62 69 74 81 86 92 98 104 112 119 126 133 142 145 154 159 164 170 175 185 192 202 205 212 217 222 232 242 252 262
1 Uses adapter series H31, H2, H32, H3, and H23.
C-12
kg 100 pieces
bent inner tab type r2 B2
0.5 0.5 1 1 1 1 1 1 1 1 1 1 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
2 2 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 4 4 4 4 4 4 4 4 4 6 6 6 6 6 6 6 6 8 8 8 8 8 8 8 8 8 8
Mass
(approx.)
9 11 13 13 13 13 13 15 15 17 17 17 17 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19
0.131 0.192 0.253 0.313 0.35 0.64 0.78 1.04 1.23 1.52 1.6 1.96 2.53 2.9 3.34 3.56 4.64 5.24 6.23 6.7 7.65 8.26 9.4 10.8 10.5 11.8 11.3 14.4 14.2 16.8 15.5 20.9 22.2 24.1 24.7 26.8 27.8 29.3
●Lockwashers
1
bore no. of adapter
Reference locknut no.
Allowable washer dimensions shaft mm (for shaft)
− − − − 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 − 24 − 26 − 28 − 30 − 32 − 34 36 38 40
AN00 AN01 AN02 AN03 AN04 AN05 AN06 AN07 AN08 AN09 AN10 AN11 AN12 AN13 AN14 AN15 AN16 AN17 AN18 AN19 AN20 AN21 AN22 AN23 AN24 AN25 AN26 AN27 AN28 AN29 AN30 AN31 AN32 AN33 AN34 AN36 AN38 AN40
10 12 15 17 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 180 190 200
Units mm
Nominal bore dia. Dimensional tolerance Dimension tolerance for distance from inner for width of inner tab ∆ f1 d3 tab to bore surface ∆M mm High Low Over up to/incl High Low 6 50 80 120
50 80 120 200
＋0.3 ＋0.3 ＋0.5 ＋0.5
0 0 0 0
＋0.2 ＋0.5 ＋0.7 ＋1
−0.2 −0.5 −0.7 −1
Above table is applicable to AWL series.
Note: Narrow slit type adapter sleeves appended with the H2, H3,and H23 series code suffix "X", use straight inner tab washers (marked with "X"); wide slit type adapter sleeves without the suffix "X" can either straight or bent inner tab washers.
C-13
●Lockwashers Series AWL 25°
ƒ
r2 ƒ1 d4
M
B2 B1 d5
d3
Bent inner tab type
Bearing numbers
Dimensions mm
bent inner straight inner tab type tab type
AWL24 AWL26 AWL28 AWL30 AWL32 AWL34 AWL36 AWL38 AWL40
AWL24X AWL26X AWL28X AWL30X AWL32X AWL34X AWL36X AWL38X AWL40X
d3
M
f1
B1
f
d4
d5
120 130 140 150 160 170 180 190 200
115 125 135 145 154 164 174 184 194
14 14 16 16 18 18 20 20 20
2 2 2 2 2.5 2.5 2.5 2.5 2.5
12 12 14 14 16 16 18 18 18
133 143 151 164 174 184 192 202 218
155 165 175 190 200 210 220 230 250
NO.of tabs Mass Reference 1 kg bore no. locknut shaft bent inner tab type of adapter no. 100 pieces mm r2 B2 (approx.) (for shaft)
1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
6 6 8 8 8 8 8 8 8
19 19 19 19 19 19 19 19 19
1 Uses adapter series H31, H2, H32, H3, and H23. Note: Wide slit type adapter sleeves without the suffix "X" can use either straight or bent inner tab washers.
C-14
Straight inner tab type
7.7 8.7 10.9 11.3 16.2 19 18 20.5 21.4
24 26 28 30 32 34 36 38 40
ANL24 ANL26 ANL28 ANL30 ANL32 ANL34 ANL36 ANL38 ANL40
120 130 140 150 160 170 180 190 200
●Lockplates Series AL, ALL
L2
B4
L3 L1
d7
B3 B3
Bearing numbers
Dimensions
Mass
mm
kg 100 pieces
AL 44 AL 52 AL 60 AL 64 AL 68 AL 76 AL 80 AL 88 AL 96 AL100
Reference
locknut no.
B3
B4
L2
d7
L1
L3
(approx.)
4 4 4 5 5 5 5 5 5 5
20 24 24 24 28 32 32 36 36 40
12 12 12 15 15 15 15 15 15 15
9 12 12 12 14 14 18 18 18 18
22.5 25.5 30.5 31 38 40 45 43 53 45
30.5 33.5 38.5 41 48 50 55 53 63 55
2.6 3.39 3.79 5.35 6.65 7.96 8.2 9 10.4 10.5
AN44,AN48 AN52,AN56 AN60 AN64 AN68,AN72 AN76 AN80,AN84 AN88,AN92 AN96 AN100
Dimensions
Mass
Reference
mm
kg
Note: Series AL uses series H31,H32,and H23 adapters.
Bearing numbers
100 pieces
ALL44 ALL48 ALL56 ALL60 ALL64 ALL72 ALL76 ALL84 ALL88 ALL96
B3
B4
L2
d7
L1
L3
4 4 4 4 5 5 5 5 5 5
20 20 24 24 24 28 28 32 32 36
12 12 12 12 15 15 15 15 15 15
7 9 9 9 9 9 12 12 14 14
13.5 17.5 17.5 20.5 21 20 24 24 28 28
21.5 25.5 25.5 28.5 31 30 34 34 38 38
Note: Series ALL uses series H30 adapters.
C-15
locknut no.
(approx.)
2.12 2.29 2.92 3.16 4.56 5.03 5.28 6.11 6.45 7.29
ANL44 ANL48,ANL52 ANL56 ANL60 ANL64,ANL68 ANL72 ANL76,ANL80 ANL84 ANL88,ANL92 ANL96,ANL100
Catalog List & Appendix Table
●Catalog List
CATALOG TITLES
CATALOG No.
●BALL AND ROLLER BEARINGS Ball and Roller Bearings
2202/C/E/F/D/I/K/S/T/TC
Large Bearings
2250/E
Plastic Cages for Rolling Element Bearings
3012/E
Miniature and Extra Small Ball Bearings
3013/E
Miniature Molded Rubber Bearings
3014/E
Vacuum Bearings
3016/E
Care and Maintenance of Bearings
3017/E/S
Ultra-Clean Bearings
3018/E
HL Bearings
3020/E
Bearings with Solid Grease
3022/E/S
Large Size, Long Operating Life Bearing-EA type
3024/E
Tapered Roller Bearings ECO-Top
3026/E/S
Self-Aligning Spherical Roller Bearings LH Series
3027/E/S
Super Slim Ball Bearings
3101/E
Ceramic Ball / Angular-Contact Bearings
3203/E
Insulated Bearings-Resin Coated Type
3204/E
Cross Roller Thrust Bearings
3501/E
Type E Spherical Roller Bearings
3701/E
Sealed Self-Aligning Roller Bearings-WA Type
3702/E
Aerospace Bearings
8102/E
Precision Rolling Bearings for Machine Tools
8401/E
●NEEDLE ROLLER BEARINGS Needle Roller Bearings
2300/E/I
Miniature Cam Followers
3601/E
●CONSTANT VELOCITY JOINTS Constant Velocity Joints for Automobiles
5601/JE
TRI-Ball Joint / Constant Velocity Joints
5602/E
Constant Velocity Joints for Industrial Applications
5603/E
●BEARING UNITS Bearing Units
2400/E/I/S
Bearing Units with Ductile Cast Iron Housing
3901/E
Bearing Units Steel Series
3902/E
Bearing Units Stainless Series
3903/E
Bearing Units Plastic Housing Series
3904/E
Triple-Sealed Bearings for Bearing Units
3905/E
D-2
●Catalog List
CATALOG TITLES
CATALOG No.
●PLUMMER BLOCKS Plummer Blocks
2500E/S
●PRECISION BALL SCREWS Precision Ball Screws
6000/E
Rolled Ball Screws
6206/E
●PARTS FEEDER Parts Feeder
7018/E
NTN Parts Feeder with Standard Attachments (for Bolts or Washer)
7016/E
●CLUTCHES One-way Clutches (Overrunning Clutches)
6402/E
●PLAIN BEARINGS "BEAREE" NTN Engineering Plastics
5100/E
NTN "BEARPHITE" Oil Impregnated Sintered Bearings
5202/E
Spherical Plain Bearings
5301/E
●HANDBOOK Bearing Units Handbook
9011/E/S
Rolling Bearings Handbook
9012/E
Needle Roller Bearings Handbook
9013/E
●GUIDE BOOK Parts Feeder Guide Book
7019/E
Automotive Products Guide Book
8021/E/D/F
New Products Guide
9208/E
Food Machinery Component Guide
9209/E
Product Catalog for Paper Manufacturing Machinery
9210/E
●ELECTRONIC CATALOG NTN Electronic Catalog (CD-ROM for Windows)
7903/E
NTN Autoparts Catalog (CD-ROM for Windows)
7905/E
Reference Kit Program -Bearing Interchange- (CD-ROM for Windows)
7907/E
●OTHERS Adapters Locknuts and Lockwasher-Inch series
2612/E
Steel Balls for Bearing
4202/E
Bearing Handling
9103/E/P/S
C:Chinese K:Korean
E:English S:Spanish
F:French T:Thai
D:Germany I:Italian TC: Taipei Chinese
Note : The above are basic numbers. Renewal of the suffix by a revision.
D-3
●Appendix Table
Inch-millimetre conversion table inch fraction
decimal
1/64 1/32 3/64 1/16 5/64 3/32 7/64 1/ 8 9/64 5/32 11/64 3/16 13/64 7/32 15/64 1/ 4 17/64 9/32 19/64 5/16 21/64 11/32 23/64 3/ 8 25/64 13/32 27/64 7/16 29/64 15/32 31/64 1/ 2 33/64 17/32 35/64 9/16 37/64 19/32 39/64 5/ 8 41/64 21/32 43/64 11/16 45/64 23/32 47/64 3/ 4 49/64 25/32 51/64 13/16 53/64 27/32 55/64 7/ 8 57/64 39/32 59/64 15/16 61/64 31/32 63/64
0.015625 0.031250 0.046875 0.062500 0.078125 0.093750 0.109375 0.125000 0.140625 0.156250 0.171875 0.187500 0.203125 0.218750 0.234375 0.250000 0.265625 0.281250 0.296875 0.312500 0.328125 0.343750 0.359375 0.375000 0.390625 0.406250 0.421875 0.437500 0.453125 0.468750 0.484375 0.500000 0.515625 0.531250 0.546875 0.562500 0.578125 0.593750 0.609375 0.625000 0.640625 0.656250 0.671875 0.687500 0.703125 0.718750 0.734375 0.750000 0.765625 0.781250 0.796875 0.812500 0.828125 0.843750 0.859375 0.875000 0.890625 0.906250 0.921875 0.937500 0.953125 0.968750 0.984375
0″
1″
0.397 0.794 1.191 1.588 1.984 2.381 2.778 3.175 3.572 3.969 4.366 4.762 5.159 5.556 5.953 6.350 6.747 7.144 7.541 7.938 8.334 8.731 9.128 9.525 9.922 10.319 10.716 11.112 11.509 11.906 12.303 12.700 13.097 13.494 13.891 14.288 14.684 15.081 15.478 15.875 16.272 16.669 17.066 17.462 17.859 18.256 18.653 19.050 19.447 19.844 20.241 20.638 21.034 21.431 21.828 22.225 22.622 23.019 23.416 23.812 24.209 24.606 25.003
25.400 25.797 26.194 26.591 26.988 27.384 27.781 28.178 28.575 28.972 29.369 29.766 30.162 30.559 30.956 31.353 31.750 32.147 32.544 32.941 33.338 33.734 34.131 34.528 34.925 35.322 35.719 36.116 36.512 36.909 37.306 37.703 38.100 38.497 38.894 39.291 39.688 40.084 40.481 40.878 41.275 41.672 42.069 42.466 42.862 43.259 43.656 44.053 44.450 44.847 45.244 45.641 46.038 46.434 46.831 47.228 47.625 48.022 48.419 48.816 49.212 49.609 50.006 50.403
2″ 50.800 51.197 51.594 51.991 52.388 52.784 53.181 53.578 53.975 54.372 54.769 55.166 55.562 55.959 56.356 56.753 57.150 57.547 57.944 58.341 58.738 59.134 59.531 59.928 60.325 60.722 61.119 61.516 61.912 62.309 62.706 63.103 63.500 63.897 64.294 64.691 65.088 65.484 65.881 66.278 66.675 67.072 67.469 67.866 68.262 68.659 69.056 69.453 69.850 70.247 70.644 71.041 71.438 71.834 72.231 72.628 73.025 73.422 73.819 74.216 74.612 75.009 75406 75.803
3″ 76.200 76.597 76.994 77.391 77.788 78.184 48.581 78.978 79.375 79.772 80.169 80.566 80.962 81.359 81.756 82.153 82.550 82.947 83.344 83.741 84.138 84.534 84.931 85.328 85.725 86.122 86.519 86.916 87.312 87.709 88.106 88.503 88.900 89.297 89.694 90.091 90.488 90.884 91.281 91.678 92.075 92.472 92.869 93.266 93.662 94.059 94.456 94.853 95.250 95.647 96.044 96.441 96.838 97.234 97.631 98.028 98.425 98.822 99.219 99.616 100.012 100.409 100.806 101.203
4″ 101.600 101.997 102.394 102.791 103.188 103.584 103.981 104.378 104.775 105.172 105.569 105.966 106.362 106.759 107.156 107.553 107.950 108.347 108.744 109.141 109.538 109.934 110.331 110.728 111.125 111.522 111.919 112.316 112.721 113.109 113.506 113.903 114.300 114.697 115.094 115.491 115.888 116.284 116.681 117.078 117.475 117.872 118.269 118.666 119.062 119.459 119.856 120.253 120.650 121.047 121.444 121.841 122.238 122.634 123.031 123.428 123.825 124.222 124.619 125.016 125.412 125.809 126.206 126.603
D-4
5″ 127.000 127.397 127.794 128.191 128.588 128.984 129.381 129.778 130.175 130.572 130.969 131.366 131.762 132.159 132.556 132.953 133.350 133.747 134.144 134.541 134.938 135.334 135.731 136.128 136.525 136.922 137.319 137.716 138.112 138.509 138.906 139.303 139.700 140.097 140.494 140.891 141.283 141.684 142.081 142.478 142.875 143.272 143.669 144.066 144.462 144.859 145.256 145.653 146.050 146.447 146.844 147.241 147.638 148.034 148.431 148.828 149.225 149.622 150.019 150.416 150.812 151.209 151.606 152.003
6″ 152.400 152.797 153.194 153.591 153.988 154.384 154.781 155.178 155.575 155.972 156.369 156.766 157.162 157.559 157.956 158.353 158.750 159.147 159.544 159.941 160.338 160.734 161.131 161.528 161.925 162.322 162.719 163.116 163.512 163.909 164.306 164.703 165.100 165.497 165.894 166.291 166.688 167.084 167.481 167.878 168.275 168.672 169.069 169.466 169.862 170.259 170.656 171.053 171.450 171.847 172.244 172.641 173.038 173.434 173.831 174.228 174.625 175.022 175.419 175.816 176.212 176.609 177.006 177.403
7″ 177.800 178.197 178.594 178.991 179.388 179.784 180.181 180.578 180.975 181.372 181.769 182.166 182.562 182.959 183.356 183.753 184.150 184.547 184.944 185.341 185.738 186.134 186.531 186.928 187.325 187.722 188.119 188.516 188.912 189.309 189.706 190.103 190.500 190.897 191.294 191.691 192.088 192.484 192.881 193.278 193.675 194.072 194.469 194.866 195.262 195.659 196.056 196.453 196.850 197.247 197.644 198.041 198.438 198.834 199.231 199.628 200.025 200.422 200.819 201.216 201.612 202.009 202.406 202.803
8″ 203.200 203.597 203.994 204.391 204.788 205.184 205.581 205.978 206.375 206.772 207.169 207.566 207.962 208.359 208.756 209.153 209.550 209.947 210.344 210.741 211.138 211.534 211.931 212.328 212.725 213.122 213.519 213.916 214.312 214.709 215.106 215.503 215.900 216.297 216.694 217.091 217.488 217.884 218.281 218.678 219.075 219.472 219.869 220.266 220.662 221.056 221.456 221.853 222.250 222.647 223.044 223.441 223.838 224.234 224.631 225.028 225.425 225.822 226.219 226.616 227.012 227.409 227.806 228.203
9″ 228.600 228.997 229.394 229.791 230.188 230.584 230.981 231.378 231.775 232.172 232.569 232.966 233.362 233.759 234.156 234.553 234.950 235.347 235.744 236.141 236.538 236.934 237.331 237.728 238.125 238.522 238.919 239.316 239.712 240.109 240.506 240.903 241.300 241.697 242.094 242.491 242.888 243.284 243.681 244.078 244.475 244.872 245.269 245.666 246.062 246.459 246.856 247.253 247.650 248.047 248.444 248.841 249.238 249.634 250.031 250.428 250.825 251.222 251.619 252.016 252.412 252.809 253.206 253.603
●Appendix Table
SI-customary unit conversion table Length
m
Area
m2
Volume
m3
1m 1in 1ft
=3.281ft=39.370in =2.540-2×10m=25.400mm =0.305mm
1m2
=10.764ft2 =1550.003in2 =9.290×10-2m2 =6.452×10-4m2 =6.452cm2
1ft2 1in2
1m3
Mass
kg
Force
N
Power
Pressure, stress
Torque
Velocity
Kinematic viscosity Temperature
W
Pa
N・m
˚C
1kg 1lb 1oz
=2.205lb =0.454kg =28.350g
1N 1kgf
=0.102kgf =9.807N
1N 1lbf
=0.225lbf =4.448N
1W
=0.102kgf・m/s =1.360×10-3PS =735.499W=75kgf・m/s =9.807W
1W 1ft・lbf/s 1hp(550ft・lbf/s)
=0.738ft・lbf/s =1.356W =745.700W
1Pa 1kgf/mm2 1MPa
=1.020×10-7kgf/mm2 =9.807×106Pa =1×106Pa=1N/mm2 =0.102kgf/mm2
1Pa 1lbf/in2 1lbf/ft2
=1.450×10-4lbf/in2 =6.895×103Pa =47.880Pa
1N・m 1kgf・m
=0.102kgf・m =9.807N・m
1N・m 1lbf・ft 1lbf・in
=0.738lbf・ft =1.356N・m =0.113N・m
1m/s 1mile/h 1ft/s
=2.237mile/h =3.281ft/s =1.609km/h =0.305m/s
1PS 1kgf・m/s
m/s
m2/s
1ft3 1in3
=35.315ft3 =6.102×104in3 =2.832×10-2m3 =16.387cm3
1m2/s 1mm2/s
=1×106cSt =1cSt
1m/s 1ft2/s
=10.764ft2/s =9.290×10-2m2/s
t˚C 1˚C
=(t˚C+273.15)K =1K
t˚C T˚F
=0.56(t˚F-32) =1.8t˚C+32
D-5
