Axial piston variable displacement pump type V60N, Serie 03 mainly for mobile applications, commercial trucks etc. Open circuit

Nominal pressure = 350 bar Maximum pressure pmax = 400 bar Geometric displacement Vmax = 60, 90 and 110 cm3/rev.

1.2 Symbol

1.

General information This variable displacement pump with its rugged construction is designed for direct mounting at the auxiliary drive (P.T.O.) of commercial vehicles and for standard mounting via a SAE-flange. With a max. displacement of 110 cm3/rev. and a peak pressure of 400 bar it is suited for many applications. This is complemented by the high self priming rate and the low noise level. The pump delivery flow is dependent on the present drive speed and geometric displacement. The flow is adjustable in a range between 0 and Qmax. Long service life is ensured due to the pressurized lubrication of the swash plate bearing shell. These features can be best employed when the variable displacement pump is combined with the directional spool valves type PSV according to D 7700 ++ and the corresponding over-center valves type LHT and LHDV according to D 7918 and D 7770. Reversing the rotation direction is very simple and can be done in the field, which helps to adapt the pump to existing applications.

HAWE Hydraulik SE STREITFELDSTR. 25 • 81673 MÜNCHEN © 2001 by HAWE Hydraulik

D 7960 N

Axial piston variable displacement pump July 2011-03

D 7960 N page 2

2.

2.1

Available versions, main data

Basic pump

V60N - 090 R DZN - 2 - 0 - 03/LSNR/ZL - 2/65 - 350 - A00/76 - C 022

Order example: Basic type

Mounting flange design (output side), see table 4, pos. 4.4

Nominal size

Suction connections, see table 3, pos. 4.3 no coding = Ports conforming ISO 228/1 (BSPP) UNF = Ports conforming SAE J 514

Direction of rotation: L = Counter clock wise R = Clock wise always facing the drive shaft (note for changing the rotation direction see position 3)

Pressure specification (bar) no coding = Without stroke limitation (standard) 2 = With stroke limitation (not available for versions with thru-shaft) 2 /... = Factory set stroke limitation, specification Vg (cm2/rev.)

Shaft design: D = Splined shaft conforming DIN ISO 14 (for trucks) M = Spline shaft DIN 5480 only V60N-090 S = Spline shaft SAE-C J 744 H = Spline shaft SAE-B J 744 only V60N-060 T = Spline shaft SAE-B-B J 744 only V60N-060 U = Spline shaft SAE-B J 744 (short) only V60N-060

Pump controllers / Intermediate plates, see table 2 Release Additional functions: 0 = Without

Mounting flange design (input side): Y = Flange ISO 7653-1985 (for trucks) G = Flange ISO 3019-2 only V60N-090 F = Flange SAE-C-4-Hole J 744 ISO 3019-1 Z = Flange SAE-B-4-Hole J 744 ISO 3019-1 only V60N-060 X = Flange SAE-B-2-Hole-45°offset J 744 ISO 3019-1 only V60N-060

Shaft design/Housing design: 1 = Standard, suction port and pressure outlet axial 2 = Thru-shaft, suction port and pressure outlet radial 3 = Standard, suction port and pressure outlet radial Seals:

N = NBR (Nitrile rubber) - Standard V = FKM

Table 1: Nominal size Coding

060

090

110

Geometric displacement Vg (cm3/rev.)

60

90

110

Nom. pressure pnom (bar)

350

350

350

Pressure pmax (bar)

400

400

400

Table 2: Pump controllers / Intermediate plates Coding

Description

LSNR

Load-Sensing controller with integrated pressure limitation LSN-controller (discontinued), see sect. 5.2, page 19

NR

Pressure controller, adjustable directly at the pump. The Pressure controller automatically maintains a constant system pressure independent of the required flow. Therefore it is suited for constant pressure systems, where differing flow is required or as efficient pressure limitation of the hydraulic system. N-controller (discontinued), see sect. 5.2, page 19

Intermediate plates Intermediate plate only in combination with controllers LSNR or NR. /ZL

Intermediate plate with power controller (torque limitation) Product „Pressure x Displacement“ = constant Adjustment range: 25...100% of max. drive torque Controllers LLSN and LN are discontinued, see also sect. 5.2, page 19

/ZW

Angled intermediate plate (45°) mandatory for mounting controllers at pumps with housing design -2, -3

D 7960 N page 3

2.2 Controller Symbols Coding LSNR

Coding .../ZL

Coding NR

D 7960 N page 4

3.

Additional parameter

3.1 General

Calculation of the nom. sizes:

Flow rate Q=

Vg · n · hv

Vg |p n

1000

Torque (lpm)

M=

Power

1,59 · Vg · |p 100 · hmh

= Displacement (cm3/rev.) = Differential pressure (bar) = Speed (rpm)

(Nm)

P=

2p · M · n 60 000

=

M · n 9549

=

Q · |p 600 · ht

(kW)

hv = Volumetric efficiency hmh = Mechanical-hydraulic efficiency ht = Total efficiency (ht = hv x hmh)

Nomenclature

Axial piston pump according to the swash plate principle

Mounting

At the auxiliary drive of commercial vehicles (flange ISO 7653-1985 for trucks) or flange assembly (flange ISO 3019-2 or SAE/ISO 3019-1)

Surface

gas nitrocarburized

Direction of rotation

Clock wise or counter clock wise

Changing the rotation direction Turn the end plate (see dimensions, pos. 4) and change the port plate, see also B 7960 N Installed position

Any (observe the installation notes!)

Hydraulic fluid

Hydraulic oil acc. to DIN 51524 table 2 and 3; ISO VG 10 to 68 acc. to DIN 51519 Viscosity range: min. approx. 10; max. approx. 1000 mm2/sec Optimal operation range: approx. 10...35 mm2/sec Also suitable are biologically degradable pressure fluids type HEES (synth. Ester) at operation temperatures up to approx. +70°C.

Temperature

Ambient: approx. -40...+60°C Fluid: -25...+80°C, pay attention to the viscosity range! Start temperature down to -40°C is allowable (Pay attention to the viscosity range during start!), as long as the operation temperature during subsequent running is at least 20K (Kelvin) higher.

Filtration

Should conform to ISO standard 4406 code 19/16/13

Initial operation

See sect. 5.1 „Installation manual for variable displacement axial piston pump type V 60N“

Max. perm. housing pressure

1 bar

Approved by

DaimlerChrysler AG, auxiliary drive NA 121-2c (only V60N-090)

V60N-060 V60N-090 V60N-110 Angle of the swash plate

21.5°

21.5°

21.5°

Required inlet pressure (absolute) for open circuit

0.85 bar

0.85 bar

0.85 bar

Max. permissible drive torque

430 Nm

530 Nm

600 Nm

Max. permissible torque for the thru-shaft, dep. on flange

100 Nm

530 Nm

600 Nm

Max. rev. rating when self priming and max. angle of the swash plate at 1 bar absolute inlet pressure

2500 rpm

2300 rpm

2200 rpm

Min. rev. rating for permanent running

500 rpm

500 rpm

500 rpm

Required torque at 100 bar

100 Nm

151 Nm

184 Nm

Drive power for 250 bar and 2000 rpm

53 kW

79.5 kW

97.2 kW

Mass (weight) complete with controller

24 kg

27 kg

31 kg

Weight torque

30 Nm

Inertia moment

0.005 kg

Sound level at 250 bar, 1500 rpm and max. swash plate angle (Measured in a sound measuring room DIN ISO 4412, distance 1 m)

75 dB(A)

35.3 Nm m2

0.008 kg 75 dB(A)

40 Nm m2

0.01 kg m2 75 dB(A)

D 7960 N page 5

3.2 Curves Delivery flow and performance The curves illustrate delivery flow/pressure (without controller). Drive power at max. swash plate angle and drive power at zero stroke at 1500 rpm.

P

)

090

er (

Pow

60)

er (0

Pow

V60N -060

Delivery flow (06 0)

V60N -090

)

10

r (1

e ow

Power (kW)

Delivery flow ( lpm)

Delivery flow (09 0)

Inlet pressure (bar)

(110)

V60N110

Delivery flow

Inlet pressure The curve was taken at viscosity 75 mm2/sec and max. swash plate angle

(1 abs.)

Power (zero stroke)

Speed (rpm)

Pressure (bar) Controller curve Coding L

Response time T1 (LSNR-controller)

Delivery flow Q (%)

Response time T1 (ms)

Pressure / Delivery flow

Pressure (bar)

Coding LSNR

Pressure (bar)

Response time T2 (LSNR-controller)

Response timeT2 (ms)

Geometric displacement (%)

approx. 4 bar

Operating pressure poper. (bar)

p

t in ms

Ss = Displacement Tu = Delay < 3 ms T1 = Response time min to max T2 = Response time max to min p = Pressure LS-line min. length 1.5 m, min. internal diameter 12 mm

Pressure (bar)

D 7960 N page 6

4.

4.1

Unit dimensions

All dimensions in mm, subject to change without notice!

Basic pumps Type V60N-060

Rotation direction, clockwise (facing the input shaft) Mounting flange design (input side) coding Y ISO 7653-1985

Stroke limitation

1) 1)

Splined shaft coding D conforming DIN ISO 14

Max. torque 110 Nm (4 x tie rod M12x170 ) Stroke limitation (Vg approx. 4 cm3/rev.)

Rotation direction, counter clockwise (facing the input shaft)

Ports (ISO 228/1 (BSPP)): P = Pressure outlet G 3/4 S = Flange, suction port D = Case drain G 3/4

1)

Coding UNF ports conforming SAE J 514: P = 1 5/16-12 UN-2B S = Flange, suction port D = 1 1/16-12 UN-2B X = G 1/4 (ISO 228/1 (BSPP)) with adaptor for 7/16-20 (SAE-4)

Mounting kit is scope of delivery with the intake acc. to sect. 4.3 (part no. 7993 355.00). It consists of: - 4x skt.-head screw M8x16-8.8 - O-ring 44.2x3 NBR 70 Sh - 2 brackets

D 7960 N page 7 Type V60N-060 Mounting flange design (input side) coding F ISO 3019-1 127-4 (SAE C-4-Hole)

Bleeding G 1/8 (BSPP)

Spline shaft coding S SAE C 14T 12/24DP

Additional input shaft designs Spline shaft Spline shaft coding U coding H SAE B 13T 16/32DP short SAE B 13T 16/32DP

Spline shaft coding T SAE BB 15T 16/32

(with mounting flange design coding Y) (with mounting flange design coding F, Z, X) For missing dimensions, see coding Y Additional mounting flange design Mounting flange design (input side) coding Z ISO 3019-1 101-4 (SAE B-4-Hole)

Mounting flange design (input side) coding X ISO 3019-1 101-2 (SAE B-2-Hole)

Bleeding G 1/8 (BSPP)

D 7960 N page 8 Type V60N-060 version with thru-shaft

Mounting flange design (output side) coding C 011, C 012 (SAE A-2-Hole), (see pos. 4.4, table 4) approx. 96

2xM10, 16 deep

Housing design Coding 2

292.5 (mounting flange design coding Y) 288 (mounting flange design coding F, Z, X) Suction port

Right hand A Suction port B Pressure outlet Pressure outlet

Left hand A Pressure outlet B Suction port

For port sizes, see page 6 Mounting flange design (output side) coding C 014 (SAE B-2-Hole) (see pos. 4.4, table 4)

Housing design Coding 3

For missing dimensions, see coding Y

For available mounting flange designs (output side) and coupling sleeves, see page 16

D 7960 N page 9 Type V60N-090 Rotation direction, clockwise (facing the input shaft) Mounting flange design (input side) coding Y ISO 7653-1985

Stroke limitation

1)

Splined shaft coding D conforming DIN ISO 14 Max. torque 150 Nm (4 x tie rod M14x190) Stroke limitation (Vg approx. 5 cm3/rev.)

Rotation direction, counter clockwise (facing the input shaft) Ports (ISO 228/1 (BSPP)): P = Pressure outlet G 3/4 S = Flange, suction port D = Case drain G 3/4

1)

Coding UNF ports conforming SAE J 514: P = 1 5/16-12 UN-2B S = Flange, suction port D = 1 1/16-12 UN-2B X = G 1/4 (ISO 228/1 (BSPP)) with adaptor for 7/16-20 (SAE-4)

Mounting kit is scope of delivery with the intake acc. to sect. 4.3 (part no. 7993 355.00). It consists of: - 4x skt.-head screw M8x16-8.8 - O-ring 44.2x3 NBR 70 Sh - 2 brackets

Additional input shaft designs

Additional mounting flange design

Spline shaft coding M DIN 5480 W30x2x14x9g

(mounting flange design coding G, F) (mounting flange design coding Y) Mounting flange design (input side) coding G ISO 3019-2-125 B4 HW

D 7960 N page 10 Type V60N-090 Mounting flange design (input side) coding F ISO 3019-1 127-4 (SAE C-4-Hole)

Spline shaft coding S 14T-12/24 DP (SAE C) Bleeding G 1/8 (BSPP)

For missing dimensions, see coding Y

Type V60N-090 version with thru-shaft Mounting flange design (output side) coding C 021, C 022 (SAE A-2-Loch) (see pos. 4.4, table 4)

Housing design Coding 2

Stroke limitation M10, 15 deep

310.5 (mounting flange design coding Y) 307 (mounting flange design coding F)

Suction port

Pressure outlet Right hand A Suction port B Pressure outlet

For port sizes, see page 9

Left hand A Pressure outlet B Suction port

D 7960 N page 11 Mounting flange design (output side) coding C 024 (SAE B-2-Hole) (see pos. 4.4 table 4)

Mounting flange design (output side) coding C 025 (SAE B-4-Hole) (see pos. 4.4 table 4)

M12, 15 deep

M12

Mounting flange design (output side) coding C 027 (SAE C-2-Hole) (see pos. 4.4 table 4)

Mounting flange design (output side) coding C 028 (SAE C-4-Hole) (see pos. 4.4 table 4)

M12, 15 deep M16

Housing design Coding 3

For available mounting flange designs (output side) and coupling sleeves, see page 16

D 7960 N page 12 Type V60N-110

Mounting flange design (input side) coding Y ISO 7653-1985

Rotation direction, clockwise (facing the input shaft)

1)

Stroke limitation

Splined shaft coding D DIN ISO 14

Max. torque 150 Nm (4 x tie rod M14x190 ) Stroke limitation (Vg approx. 6 cm3/rev.)

Rotation direction, counter clockwise (facing the input shaft)

Ports (ISO 228/1 (BSPP)): P = Pressure outlet G 3/4 S = Flange, suction port D = Case drain G 3/4

1)

Coding UNF ports conforming SAE J 514: P = 1 5/16-12 UN-2B S = Flange, suction port D = 1 1/16-12 UN-2B X = G 1/4 (ISO 228/1 (BSPP)) with adaptor for 7/16-20 (SAE-4)

Mounting kit is scope of delivery with the intake acc. to sect. 4.3 (part No. 7993 355.00). It consists of: - 4x skt.-head screw M8x16-8.8 - O-ring 44.2x3 NBR 70 Sh - 2 brackets

Rotation direction, counter clockwise (facing the input shaft)

Mounting flange design (input side) coding F ISO 3019-1 127-4 (SAE C-4-Hole)

Spline shaft coding S 14T-12/24DP (SAE C)

Bleeding G 1/8 (BSPP)

D 7960 N page 13 Type V60N-110 version with thru-shaft Mounting flange design (output side) coding C 021, C 022 (SAE A) (see pos. 4.4 table 4) Coding 2

M10, 15 deep

314 Mounting flange design coding Y 310 Mounting flange design coding F Bleeding G 1/8 (BSPP)

Mounting flange design (input side) coding C 024 (SAE B-2-Hole) (see pos. 4.4 table 4)

Suction port

M12 Right hand A Suction port B Pressure outlet Pressure outlet

Left hand A Pressure outlet B Suction port

For port sizes, see page 12

D 7960 N page 14 Type V60N-110 Mounting flange design (output side) coding C 025 (SAE B-4-Hole) (see pos. 4.4 table 4)

Mounting flange design (output side) coding C 027 (SAE C-2-Hole) (see pos. 4.4 table 4)

M12, 15 deep M16

Mounting flange design (output side) coding C 028 (SAE C-4-Hole) (see pos. 4.4 table 4)

M12, 15 deep

Coding 3

D 7960 N page 15

Controller and intermediate plates Controller type LSNR, NR

20 Nm, a/f 17

approx. 96

20 Nm, a/f 17

approx. 105

Pressure limitation 2)

Differential pressure |p 1) 2) (Stand-by pressure)

Ports ISO 228/1 (BSPP): X = G 1/4 X = LS signal port G 1/4 Order coding for the UNF-adaptor 79.93 245

Dynamic throttle a/f 6

Controller Type /ZL intermediate plates version

approx. 96

Intermediate plate Type /ZW version with thru-shaft

approx. 64

4.2

approx. 62 Power adjustment

Pressure adjustment

Pressure range (bar)

|p (bar) /rev.

Pressure setting, factory set (bar)

Pressure limitation

20 ... 400

approx. 50

300

Differential pressure |p 1)

20 ... 55

approx. 12.5

27

1) Applies 2)

only type LSNR

The adjustment range is limited by a mechanical stop.

Attention: Always use a pressure when changing the pressure setting!

D 7960 N page 16

4.3

Suction intakes Order example:

V60N - 090 R DZ N - 1 - 0 - 01/LSNR - 350 -

A00/76 Nom. size

Table 3: Suction intakes (incl. mounting kit) See also sect. 5.1 „Installation manual for variable displacement axial piston pump type V 60N“ Nom. size (N)

Qmax (lpm)

Straight

45°

90°

Thread

A00/..

A 45/..

A90/..

A.

h

h

k

h

k

h

Geometric shape

38 (1 1/2”) 1)

75

65

-

-

-

-

-

42

90

-

85

40

-

-

-

50 (2”)

125

65

96

40

53

84

-

64 (2 1/2”)

190

90

96

40

109

129

-

76 (3”)

250

106

106

40

-

-

-

6 (G 1 1/4)

90

-

-

-

-

-

21

Mounting kit is scope of delivery with the intake acc. to sect. 4.3 (part No. 7993 355.00). It consists of: - 4x skt.-head screw M8x16-8.8 - O-ring 44.2x3 NBR 70 Sh - 2 brackets

7 (G 1 1/2)

125

-

-

-

-

-

28.5

G = BSPP

A00/...

A45/..

2)

Attention: Should be used for reduced flow only!

A90/...

A6 A7

Dimension b: 6.2 mm

4.4

Mounting flange design (output side) Order example: V60N-110 RDYN-2-0-01/LSNR-350-A00/76- C 022 Table 4: Available mounting flange designs(output side) incl. coupling sleeves Coding V60N 060

Shaft

090/110

C 011 C 021 C 012 C 022 -- -- C 014 C 024 C 015 C 025 -- - -- C 027 -- C 028 -- --

4.5

Flange

SAE A-2-Hole SAE A-2-Hole SAE A-2-Hole SAE B-2-Hole SAE B-4-Hole SAE B-B-2-Hole SAE C-2-Hole SAE C-4-Hole SAE C-C-2-Hole

9T 9T 11T 13T 13T 15T 14T 14T 23T

16/32 DP 16/32 SP 2) 16/32 DP 16/32 DP 16/32 DP 16/32 DP 12/24 DP 12/24 DP 16/32 DP

Attention: Observe the max. drive torque rating! Note:

An additional support has to be provided in case of pup combinations. Additional versions on request!

2)

ANSI B 92.1, FLAT ROOT SIDE FIT The spline width is not conforming the industrial standard s = 2.357-0.03

Coupling flange for universal joint shafts (SAE C) (DIN ISO 014)

Coding

Spline profile

SAE C

14T 12/24 DP

DIN ISO 014

B8x32x36

D 7960 N page 17

5. Appendix 5.1

Installation manual for variable displacement axial piston pump type V 60N

5.1.1 General information

The variable displacement axial piston pump type V 60N is intended for open circuits. It can be directly mounted to the PTO-drive of trucks via flanges conforming ISO 7653 or SAE-C-, SAE-B2-, - SAE-B4. There is also a coupling sleeve available for universal joint drive shafts. The rotation direction can be changed at all pumps type V60N (see operation manual B 7960 N). Below points should be observed during installation: Mounting and removal of the pump and its attached components should be performed only by trained staff. Cleanness and cleanliness is an essential condition for functional safety and long service life of the pump. - Remove all plastic plugs prior to initial operation. - The pump should not be installed higher than the tank (see sect. 5.1.3 Installation position). - The pipe dimensions should be selected conforming the guidelines in table 3 of sect. 4.3. - The pump has to be filled with oil and properly bled as automatic bleeding via opened bleeders in the suction line is not possible. - It should be prevented that the pump / suction line run empty. - It is mandatory that the pump is steadily supplied with oil. Even short interruptions of the oil supply may harm the internals of the pump. Such damages may be not immediately detectable after initial operation. - The tank must feature a baffle as the oil returning from the circuit should not be sucked in directly. - Let the pump run for approx. 10 min. at max. 50 bar after first start-up. - The intended operation pressure should not be used before the complete system is thoroughly bled and flushed. - The perm. operation temperature must not be exceeded. - The fluid cleanliness level stated in this pamphlet has to be maintained. A filtration for the hydraulic fluid has to be provided to ensure that the contamination level stays within the specifications. - A written approval from HAWE Hydraulik is necessary for suction filters. - A main pressure limiting valve limiting the system pressure has to be installed in the P line. 5.1.2 Ports The nom. width of the suction line depends on the operation conditions, the viscosity of the hydraulic fluid, the start- / operation temperature and the pump speed. The suction line close to the pump should be made with a hose or a rubber compensator to ensure oscillation dampening. Pressure port The pressure line is connected via port G 3/4“ (BSPP) with type V60N-060 or G 1“ (BSPP) with type V60N-090/110. Observe the torque specification of the fitting manufacturer. Suction port The suction line is connected via a standardized suction intake matching the max. delivery flow of the pump. The max. delivery flow rating Qmax (see below table) for the respective suction intake must not be exceeded. Nom. size (N)

38 (1 1/2”)

42

50 (2”)

64 (2 1/2”)

74 (3”)

6 (G 1 1/4)

7 (G 1 1/2)

Qmax (lpm)

75

90

125

190

250

90

125

G = BSPP

These suction intakes have to be ordered as an option for the pump. The suction line should be routed in such a way that it is steadily rising to prevent any air locks. Observe the notes regarding the installation position in sect. 5.1.3. The max, pressure in the suction line is limited to 0.8 bar. The suction line should be a hose to ensure oscillation dampening. Leakage ports The pump type V60N features 2 leakage ports G 3/4“ (BSPP). Pumps with mounting flange SAE-B2, SAE-B4 and SAE-C (drive side) feature an additional leakage port G 1/8“ (BSPP) which is employed at vertically installed pumps. The internal diameter of the leakage line must be min. 14 mm. It should be dimensioned in such a way that the max. pressure in the housing never exceeds 1 bar. All leakage ports may be employed simultaneously. There must not be any direct connection between suction and leakage line. There is no need for an additional leakage line from the controller to the tank. Observe the notes regarding the installation position in sect. 5.1.3. LS port (only with controllers LSN/LLSN, LSNR/LSNR-ZL) The LS line is connected to the controller via port G 1/4“ (BSPP). The capacity of this line should be min. 10% of the delivery flow line. The LS-line should be a hose to ensure oscillation dampening. - It is mandatory that the LS-line is completely depressurized while the prop. directional spool valves are in idle position!

D 7960 N page 18 5.1.3

Installation position The variable displacement axial piston pump type V 60N can be installed in any orientation. The specifications from the truck manufacturer have to be observed, when the pump is mounted at the PTO- drive. An additional support has to be provided in case of pump combinations. Below points have to be observed: Level installation orientation: (pump below min. tank fluid level) The uppermost positioned leakage port should be employed at level installation orientation.

Vertical installation orientation: (pump below min. tank fluid level) Only pumps with mounting flange (drive side) type SAE-B2, SAE-B and SAE-C. The drive side has to be facing upwards. The uppermost positioned leakage port should be employed at vertical installation orientation. The bleeder port G 1/4“ (BSPP) at the mounting flange (drive side) has to be connected additionally. Both lines should be steadily rising. For vertical installation orientation with the drive side facing downwards, contact HAWE Hydraulik.

Installation inside the tank (pump below min. tank fluid level) The use of a suction intake inch suction hose is not mandatory but recommended (see table 3 in sect. 4.3.)

Additional notes regarding installation above the min. tank fluid level Special measures are necessary, when the pump is installed above the min. tank fluid level. It must be prevented that air enters the pump via pressure-, suction-, leakage-/bleeding- or control line, especially during prolonged stand-still periods. A check valve (open-up pressure approx. 0.5 – 0.6 bar) has to be installed at the end of the leakage line to prevent running empty of the pump. All connection lines must be provided with individual bleeders. The sequence for bleeding depends on the installation orientation. There is a special form (B 7960 - Check-list for variable displacement axial piston pumps) for more detailed layout information.

D 7960 N page 19

5.2

Controllers - discontinued

Do not use for new applications!

5.2.1 Available versions

Table 5: Pump controllers Coding

Description

LSN

Load-Sensing controller with integrated pressure limitation Pressure controller, adjustable directly at the pump. The Pressure controller automatically maintains a constant system pressure independent of the required flow. Therefore it is suited for constant pressure systems, where differing flow is required or as efficient pressure limitation of the hydraulic system.

N

Power controller (torque limitation) in combination with LSN Product „Pressure x Displacement“ = constant Adjustment range: 25...100% of max. drive torque

LLSN

LN

Power controller (torque limitation) in combination with pressure controller N Adjustment range: 25...100% of max. drive torque

5.2.2 Symbols Coding LSN

Coding LLSN

Inflow orifice

Power setting Differential pressure |p By-pass orifice (option)

Pressure limitation pmax

Outflow orifice

Coding N

Coding LN

Fitted orifices (standard) Controller #d1

#d2

#d3

#d4

#d6

#d8

LSN LLSN

-

0.7

1.2

2x0.4

-

0.9

N LN - 0.7 - - - 0.7

D 7960 N page 20 5.2.3 Unit dimensions Type LSN, LN, N and LLSN Differential pressure |p 1) Power adjustment

approx. 91

Pressure limitation

Ports ISO 228/1 (BSPP): LS = G 1/4 LS = LS signal port G 1/4 Order coding for the UNF-adaptor 79.93 245

Pressure adjustment

Pressure range (bar)

|p (bar) /rev.

Pressure setting, factory set (bar)

Pressure limitation



50 ... 400

100

300

Differential pressure |p 1)



18 ... 45

10

27

1)

Applies only for controller type LSN and LLSN