RA 92703/04.96
Variable Displacement Pump A10VO Series 5, open circuits, SAE-Version Axial piston, swash plate design size 28…60
Nominal pressure
The variable displacement axial piston pump A10VO in swashplate design was designed for hydrostatic drives in open circuits. Flow is proportional to the drive speed and the displacement. By adjusting the position of the swashplate it is possible to vary the flow steplessly.
3600 psi (250 bar)
Peak pressure
4600 psi (315 bar)
RA 92703/10.97 replaces 04.96
– Strong bearings for long life – High permissible drive speed – High power-weight ratio – Small dimensions – Low noise level – Good suction characteristics – Permissible continous pressure 3600 psi (250 bar) – Axial and radial loading of drive shaft possible – Pressure and flow control – Short control times – 2 drain ports
1
RA 92703/10.97 Variable displacement pump A10VO, Series 5
Ordering code
A10V
O
/ 52
–
N00
Fluid Petroleum oil (no code) Axial piston unit Variable, swashplate design SAE nominal pressure 3600 psi (250 bar), peak pressure 4600 psi (315 bar)
A10V
Mode of operation Pump, open circuit
O
Size Displacement Vgmax
28
45
60
(in3)
1.71
2.75
3.66
(cm3)
28
45
60
Control devices Pressure control
DR
●
●
●
DR
Pressure-remote control
DRG
●
●
●
DRG
Pressure and flow control
DFR
●
●
●
DFR
●
●
●
DFR1
DFR
1
without orifice betwen X and tank Series 52 Direction of rotation As viewed from driveshaft
clockwise counter-clockwise
R L
Seals NBR (Nitrile rubber to DIN ISO 1629)
P
FPM (Fluoride rubber to DIN ISO 1629)
V
Shaft end
28
45
60
Splined shaft SAE
7/8"
1"
1 1/4"
S
Splined shaft SAE (higher through drive torque)
7/8"
1"
—
R
—
7/8"
1"
U
—
7/8"
1"
W
28
45
60
Splined shaft SAE (not suitable for through drive) Mounting flange SAE 2-bolt – SAE 101-2 (B)
●
●
●
C
SAE 4-bolt
—
—
●
D
Service ports
28
45
60
SAE-threaded rear
●
●
—
64
SAE-flange rear – UNC threads
●
●
●
61
Pressure port B Inlet port S
SAE-flange rear – metric threads
●
●
●
11
Pressure port B Inlet port S
SAE-flange side ports – UNC threads
●
●
●
62
Pressure port B Inlet port S
SAE-flange side ports – metric threads
●
●
●
12
28
45
60
●
●
●
Pressure port B Inlet port S
Pressure port B Inlet port S
Through drive
2
without through drive Mounting flange shaft-coupler
to mount:
101-2 (SAE B)
22-4 (SAE B)
A10VO 28 (shaft S)
●
●
●
K68
101-2 (SAE B)
25-4 (SAE B-B)
A10VO 45 (shaft S)
—
●
●
K04
127-4 (SAE C)
32-4 (SAE C)
A10VO 60 (shaft S)
—
—
●
K15
only possible without through drive
N00 ● = available ❍ = in preparation — = not available
RA 92703/04.96 Variable displacement pump A10VO, Series 5
Hydraulic fluid Prior to project design, please see our catalog sheets RA 90220 (mineral oils) and RE 90221 (environmentally compatible fluids) for detailed information on the selection of hydraulic fluids and application conditions. When operating with environmentally compatible fluids certain limitations may apply. Please consult us. Operating viscosity range For optimum efficiency and service life, we recommend that the operating viscosity (at operating temperature) be selected in the range νopt = optimum operating viscosity 80...170 SUS (16...36 mm2/s) referred to tank temperature (open circuit). referred to tank temperature (open loop circuit). Limits of viscosity range The following values are valid for extreme operating conditions: νmin = 60 SUS (10 mm2/s) for short periods at max. leakage oil temperature of 90° C. νmax = 4600 SUS (1000 mm2/s) for short periods upon cold start.
Temperature range (see selection diagram) tmin = –13° F (–25° C) tmax = –13° F (+90° C) Notes on the selection of the hydraulic fluid For correct selection of the fluid it is assumed that the operating temperature in the tank is known (open circuits), in relation to the ambient temperature. The hydraulic fluid should be selected so that, within the operating temperature range, the operating viscosity lies within the optimum range νopt, (see shaded section of selection diagram). We recommend that the higher viscosity grade is selected in each case. Example: At an ambient temperature of X°F (°C) the operating temperature in the tank will be 140° C. In the optimum operating viscosity range (νopt; shaded section) this corresponds to viscosity grade VG 46 or VG 68; VG 68 should be selected. Important: The leakage oil temperature is influenced by pressure and speed and is always higher than the tank temperature. At no point in the system, however, may the temperature be higher than 195° F (90° C). If it is not possible to comply with the above conditions because of extreme operating parameters or a high ambient temperature, please consult us.
Selection diagram (7000) (5000) (3000) (2000)
1600 1000
(1000)
200
1600 (7425)
600 400
0 10 G V 68 G V 46 G V 32
G
V
VG
Viscosity v mm2/s (SUS)
22
(500)
100
(300)
60
(200) (150)
40
(100)
20
,,,,,,,,,,,,, ,,,,,,,,,,,,, ,,,,,,,,,,,,, ,,,,,,,,,,,,, ,,,,,,,,,,,,,
(80) (70) (60)
36 (170)
vopt. 16 (80)
10
(50)
(40)
5 -40
-20
0
20
40
(-40) (-30) (-20) (-10) (0)
60
80
5 (42) 100 120 140 160 180 200 220 240
(10) (20) (30) (40) (50) (60) (70) (80) (90)(100) (110)
Temperature t in °F (°C) Fluid temperature range Filtration In order to guarantee reliable function, the operating fluid must be maintained to a cleanliness grade of minimum 9 to NAS 1638 or 6 to SAE 18/15 to ISO/DIS 4406 This may be achieved for example with filter elements, type...D 020...(see RA 50 075). This gives a filtration quotient of β20 ≥ 100.
3
RA 92703/10.97 Variable displacement pump A10VO, Series 5
Technical Data Operating pressure range - Inlet side Absolute pressure at port S (inlet port) pabs min ____________________________________________________ 11.6 psi (0.8 bar) pabs max ______________________________________________________ 435 psi (30 bar)
Determination of inlet pressure pabs at the inlet port, resp. the reduction in displacement for increasing speed.
Operating pressure range - Outlet side pressure at port B Nominal pressure pN ______________________________ 3600 psi (250 bar) Peak pressure pmax ________________________________ 4600 psi (315 bar) (Pressure data to DIN 24312) Direction of flow S to B. Case drain pressure Maximum permissible pressure of leakage fluid (at port L, L1): maximum 7.25 psi (0.5) bar higher than the inlet pressure at port S, but not higher than 29.0 psi (2 bar) absolute.
Table of values (theoretical values, without considering ηmh and ηv; values rounded) Size Displacement
Vg max
in3 (cm3)
28
45/H*
60
1.70 (28)
2.74 (45)
3.66 (60)
Max. speed1)
at Vg max
no max
min–1
3000
2600/3000
2700
Max. flow
at no max
Qo max
GPM (L/min)
22.1 (84)
30/34.5 (113)/(131)
0.13 (162)
at nE = 1450 rpm Max. power (∆p = 3600 psi (250 bar))
at no max
Po max
at nE = 1450 rpm
GPM (L/min) 10.8 (41)
17.1 (65)
22.9 (87)
HP (kW)
65.7 (49)
91.9 (68)
46.9 (35)
HP (kW)
22.7 (17)
36.2 (27)
49.2 (36)
Max. torque (∆p = 3600 psie (250 bar)) at Vg max
M max
lb-ft (Nm)
81.8 (111)
132 (179)
175.5 (238)
Moment of inertia about drive axis
J
lb-ft2 (kgm2)
0.04 (0.0017) 0.07 (0.0033) 0.13 (0.0056)
G (L)
0.07 (0.3)
Fill capacity
0.13 (0.5)
0.21 (0.8)
Approx. weight (without oil fill)
m
lbs. (kg)
33.00 (15)
39.67 (18)
48.48 (22)
Permissible loading on drive shaft: max. perm. axial force
Fax max
lbs. (N)
224 (1000)
337 (1500)
449 (2000)
max. perm. radial force
Fq max
lbs. (N)
269 (1200)
337 (1500)
382 (1700)
1
) The values shown are valid provided there is an absolute pressure of 14.5 psi (1 bar) at suction inlet S.
Direction of force
By increasing the inlet pressure (pabs>14.5 psi (1bar)) or reduction of the diplacement, the speed can be raised up to the maximum speed limit (see diagram).
Fq
H* High speed version
± Fax X/2
X/2
Calculation of size Flow
Q=
X
Vg • n • ηv
[L/min]
1000 Drive torque
M=
Drive power
P=
1.59 • Vg • ∆ p 100 • ηmh 2π • M • n 60000
4
[Nm]
=
M•n 9549
=
Q•∆p 600 • ηt
[kW]
Vg ∆p n ηv ηmh ηt
= geometr. displacement [cm3] per rev. = pressure differential [bar] = speed [rpm] = volumetric efficiency = mech.-hydr. efficiency = overall efficiency (ηt = ηv • ηmh)
RA 92703/04.96 Variable displacement pump A10VO, Series 5
Operating Curves for Pump with Pressure Control DR
77
73
Size 28
Q min
– – – – n = 1500 rpm n = 3000 rpm
Qmax
n = 3000 rpm
71
Qmax
Q min n = 1500 rpm
69 67 65 63 61
Flow Q GPM (L/min) ➛
(90) (80)
303
(60)
227
Q
1450
2175
2900
3625
(50)
(100)
(150)
(200)
(250)
151
26.8
(20)
15.7
13.4
(10)
0
PQmin 0
50
100
150
200
250
0
Operating pressure psi (bar) ➛
Operating pressure psi (bar) ➛
Q max
80 78
Size 45
Q min
76
– – – – n = 1500 rpm n = 2600 rpm
n = 2600 rpm 74 72
Q max
70
Q min n = 1500 rpm
68 66 64 62
(120)
Flow Q GPM (L/min) ➛
Noise level LA (dB(A)) ➛
(30)
(20)
0
Size 45
(40)
(40)
59 725
PQmax
53.6 40.28
(100)
378
(80)
303
(60) (40) (20)
60 725
1450
2175
2900
3625
(50)
(100)
(150)
(200)
(250)
(60)
454
{50)
Q 53.6
(40)
227
40.28
(30)
151
26.8
(20)
13.4
(10)
PQmax
PQmin
15.7 0
0
50
0
100
150
200
250
Drive power HP (kW) ➛
Noise level LA (dB(A)) ➛
75
Drive power HP (kW) ➛
Drive power and output flow (fluid: mineral oil to ISO VG 46 DIN 51519, t = 50° C)
Noise level Measured in an anechoic chamber to DIN 43635 Distance from microphone to pump = 3.28 ft. (1 m) Measuring error to DIN 45635, part 1: ± 2 dB (A) (Fluid: hydraulic oil to ISO VG 46 DIN 51519, t = 50° C) Size 28
0
Operating pressure psi (bar) ➛
Operating pressure psi (bar) ➛ Size 60 Size 60
Q max
80
– – – – n = 1500 rpm n = 2700 rpm
Q min
78
Noise level LA (dB(A)) ➛
Q max
74
Q min
72
n = 1500 min-1
70 68 66 64
(160)
Flow Q GPM (L/min) ➛
n = 2700 min-1
76
(80)
605
(140)
530
(120)
454
(70)
Q
(60)
PQmax
{50)
(100)
378
(80)
303
53.6
(40)
(60)
227
40.28
(30)
26.8
(20)
13.4
(10)
(40)
151
(20)
15.7
PQmin
Drive power HP (kW) ➛
82
62 0
60 725
1450
2175
2900
3625
(50)
(100)
(150)
(200)
(250)
0
Operating pressure psi (bar) ➛
0
50
100
150
200
250
0
Operating pressure psi (bar) ➛
5
RA 92703/10.97 Variable displacement pump A10VO, Series 5
Installation Notes Installation position is optional. The pump housing must be filled with fluid during commissioning and remain full when operating. In order to achieve the lowest noise value, all connections (suction, pressure, case drain ports) must be linked by flexible couplings to tank. Avoid placing a check valve in the case drain line. This may, however, be permissible in individual cases, after consultation with us. 1. Vertical installation (shaft end upwards) The following installation conditions must be taken into account: 1.1. Arrangement in tank Before installation fill pump housing, keeping it in a horizontal position. a) If the minimum fluid level is equal to or above the pump mounting surface leave ports “L”, "L1" and “S” open (see Fig.1). b) If the minimum fluid level is below the pump mounting surface pipe port “L1”, and possibly “S” according to Fig. 2. Close port "L" with respect to conditions in 1.2.1.
2. Horizontal installation The pump must be installed, so that "L" or "L1" is at the top. 2.1. Installation within a tank a) If the minimum fluid level is equal to or above the top of the pump,ports "L", "L1" and “S” should remain open (see fig. 3) b) If the minimum fluid level is below the top of the pump, pipe ports "L", "L1" and possibly "S" as fig. 4. The conditions correspond to item 1.2.1.
2.2. Installation outside a tank Fill the pump housing before commissioning. Pipe ports "S" and the higher port "L" or "L1". a) When mounting above the tank, see fig. 4. Conditions correspond to 1.2.1. 1.2. Installation outside a tank Before installing the pump, fill the pump with housing in the horizontal position.For mounting above a tank see fig. 2. Limiting conditions: 1.2.1. Minimum pump inlet pressure pin min = 0,8 bar both static and dynamic conditions. Note: Avoid mounting above a tank wherever possible in order to achieve a low noise level. The permissible suction height h comes from the overall pressure loss, but may not be bigger than hmax = 800 mm (immersion depth hd min = 200 mm).
b) Mounting below the tank Pipe ports "L" and “S” according to fig.5.
Overall pressure loss ∆ptotal = ∆p1 + ∆p2 + ∆p3 ≤ (1 – pin. min) = 0,2 bar ∆p1: Pressure loss in pipe due to accelerating column of fluid ∆p1 =
ρ • l • dv dt
•
10–5 (bar)
ρ = density (kg/m3) l = pipe lenght (m) dv/dt = change in rate of fluid velocity (m/s2) ∆p2: Pressure loss due to static head h = head (m) ∆p2 = h • ρ • g • 10–5 (bar) ρ = density (kg/m3) g = gravity. = 9,81 m/s2 ∆p3: Line losses (elbows etc.)
6
Vg ∆p n ηv ηmh ηt
= geometr. displacement [cm3] per rev. = pressure differential [bar] = speed [rpm] = volumetric efficiency = mech.-hydr. efficiency = overall efficiency (ηt = ηv • ηmh)
RA 92703/04.96 Prior to finalising your design, please request certified installation drawing. All rights reserved – subject to revision.
Variable displacement pump A10VO, Series 5
Dimensions size 28 Version A10VO 28
DR DFR 61 DFR1 /52 R -X S C 64 N00 DRG
5.70 (145) 3.54 (90) 0.47 (12) 0.37 (9.5) 0.24 (6.3)
3/ 416
4.86 (123.5)
B
1.06 (27)
L1 6.69 (170)
0.31 (7.9) 1.61 (41)
5.74 (146)
8.26 (210)
6.77 (172)
shaft22-4; 22-4;SAE J744OCT OCT shaft SAE J744 8383 30° 1313 teeth, 30° pressure pressureangle; angle; teeth 16/32 16/32DP DP, flat root, side fit. 2.44 (62)
0.39 (10)
View W Portplate 61 shown is clockwise rotation
1 1/16-12UN-2B 20 deep
SAE 1 1/4" 7/16-14UNC-2B 24 deep standard pressure range
1.29 (33)
1.29 (33)
For counter-clockwise rotation, turn port plate 180o Ports B Pressure port 1 1/16-2UN-2B S Inlet port 1 5/8-12UN-2B 3/4-16UNF-2B L/L1 Case drain X Pilot port 7/16-20UNF-2B in model pressure control DR pilot port X is plugged
1.87 (47.6)
ø0.78 ø(20)
1 5/8-12UN-2B 20 deep
2.31 (58.7) ø1.25 (ø32)
4.21 (107)
View W Portplate 64 shown is clockwise rotation
7/16-20UNF-2B 20 deep
0.98 (25.1)
2.87 (73)
0.62 16
2.59 (66)
2.
69
(6
8.
5)
0.56 (14.3)
45°
ø4.00h8 (ø101.6h8) ø7/8" 1/4-20UNC-2B
2 F-
N
U
Flange 101-2 SAE J744 OCT 83
SAE 3/4"
1.29 (30.2)
0.87(22.2) 1.29 (33)
1.29 (33)
3/8-16 UNC-28 19 deep standard pressure range
For counter-clockwise rotation, turn port plate 180o Ports B Pressure port SAE 3/4" (Standard pressure range) S Inlet port SAE 1 1/4" (Standard pressure range) 3/4-16UNF-2B L/L1 Case drain X Pilot port 7/16-20UNF-2B in model pressure control DR pilot port X is plugged
7
RA 92703/10.97 Prior to finalising your design, please request certified installation drawing. All rights reserved – subject to revision.
Variable displacement pump A10VO, Series 5
Dimensions size 45 Pressure control DR Version A10VO 45 DR /52 R-X S C 11 N00 61 3.89 (99)
2.75 (70)
0.62 (16) 1.18 (30) 7.44 (189) 8.50 (216)
0.24 (6.3) 0.31 (7.9) 0.37 (9.5) 1.80 (45.9)
0.47 (12)
Shaft S
View W Portplate 11/61
shaft 25-4; SAE J744 OCT 83 30° pressure angle, 15 teeth, 16/32 DP shaft 25–4; (SAE B–B) SAE J744 OCT 83
30o pressure angle, 15 teeth, 16/32 DP
Ø1" 1/4-2OUNC-2B
0.62 (16)
Ø1.49 (Ø38)
1.80 (45.9)
Shaft U
w. plate 11 N00 M 12; 20 deep w. plate 61 N00 1/2-13UNC-2B
shaft 22–4; (SAE B) SAE J744 OCT 83
Ø7/8"
o
1/4-20OUNC-2B
0.62 (16)
Ø0.98 (Ø25)
usable length of spline
1.08 (27.5)
30 pressure angle, 13 teeth, 16/32 DP
2.0 (52 6 ± 0 . .4 ± 0 007 .2)
Shaft R
5.74 (146) 6.77 (172)
2.7 (69 5 ± 0 . .9 ± 0 007 .2)
Ø4.00 h8 (Ø101.6 h8)
Flange 101-2 Flansch SAE J744 OCT 83
0.56 (14.3) 3.03 (77)
5.17 (131.5)
1.18 (30)
1.4 (35 0 ± 0 .7 . ± 0 008 .2)
1.0 (26 3 ± 0 .2 ± .007 0.2 )
1.49 ± 0.007 1.49 ± 0.007 (38± 0.2) (38± 0.2)
w. plate 11 N00 M 10; 17 deep w. plate 61 N00 3/8-16UNC-2B
Shown for clockwise rotation For counter-clockwise rotation, turn port plate 180o 0.98 (25.1) 1.30 (33.1) 1.61 (41)
Shaft W
Ports B Pressure port S Inlet port L/L1 Case drain
8
SAE 1" (Standard pressure range) SAE 1 1/2" (Standard pressure range) 7/8-14UNF-2B
RA 92703/04.96 Prior to finalising your design, please request certified installation drawing. All rights reserved – subject to revision.
Variable displacement pump A10VO, Series 5
Dimensions size 45 Version A10VO 45
DFR /52 R- X S C 64 N00 DRG
View W Portplate 64
Shaft S shaft 25-4; SAE J744 OCT 83 30° pressure angle, 15 teeth, 16/32 DP shaft 25–4; (SAE B–B) SAE J744 OCT 83
30o pressure angle, 15 teeth, 16/32 DP
Ø1"
Shaft R
1/4-2OUNC-2B
0.62 (16)
1.08 (27.5)
1.80 (45.9)
shaft 22–4; (SAE B) SAE J744 OCT 83
Ø7/8"
Shaft U
usable length of spline
1/4-20OUNC-2B
0.62 (16)
30o pressure angle, 13 teeth, 16/32 DP
Shown is clockwise rotation For ccw - rotation, turn port plate 180o
0.98 (25.1) 1.30 (33.1) 1.61 (41)
Shaft W
Ports B Pressure port S Inlet port L/L1 Case drain X Pilot port
1 5/16-12UN-2B 1 7/8-12UN-2B 7/8-14-UNF-2B 7/16-20UNF-2B
9
RA 92703/10.97 Variable displacement pump A10VO, Series 5
Prior to finalising your design, please request certified installation drawing. All rights reserved – subject to revision.
Dimensions size 45 Version A10VO 45
DFR /52 R- X U C 12 N00 DRG 62
Shaft S shaft 22-4; SAE J744 OCT 83 30° pressure angle, 13 teeth, 16/32 DP shaft 25–4; (SAE B–B) SAE J744 OCT 83
30o pressure angle, 15 teeth, 16/32 DP
Ø1"
Shaft R
1/4-2OUNC-2B
0.62 (16)
1.08 (27.5)
1.80 (45.9)
shaft 22–4; (SAE B) SAE J744 OCT 83
Ø7/8"
Shaft U
usable length of spline
1/4-20OUNC-2B
0.62 (16)
o
30 pressure angle, 13 teeth, 16/32 DP
Shown for clockwise rotation For ccw - rotation, turn port plate 180o
0.98 (25.1) 1.30 (33.1) 1.61 (41)
Shaft W
Ports B Pressure port S Inlet port L/L1 Case drain X Pilot drain
10
SAE 1" (Standard pressure range) SAE 1 1/2" (Standard pressure range) 7/8-14UNF-2B 7/16-20UNF-2B
RA 92703/04.96 Prior to finalising your design, please request certified installation drawing. All rights reserved – subject to revision.
Variable displacement pump A10VO, Series 5
Dimensions size 60 DR DFR /52 R- X S D 61 N00 DRG
Version A10VO 60
8.50 (216) 5.94 (151) 4.60 (117) 3.54 (40) 0.50 (12.7)
°
7/8-14UNF-2B
2B FN U 14 .56 ) 80 4.3 7/ 1
Flange 127-4 SAE J744 OCT
45 0.90 (18)
83
,5 78
2.99 (76)
0.74 19 (19)
1 (14.5) 4.50
3.42 (87)
5.39 (137) 5.82 (148)
5/16-18UNC-2B ø1 1/4"
➝
ø5.00 h8(ø127 h8)
(
W
1.55 (39.5)
0.23 (6)
4.50 1 (14.5)
0.31 (7.9)
2.18 (55.4)
5.74 (146)
8.18 (208)
shaft 32-4; SAE J744 OCT 83 30° pressure angle, 14 teeth; 12/24 DP 2.57 (64)
X
ø0.98 (ø 25)
2.06 (52.4)
ø1.96 (ø50)
3.06 (77.8)
7/16-20UNF-2B 10 deep
0.39 (10)
4.03 (120.5)
View W Port plate 61
B SAE 1" Standard pressure range
S SAE 2" Standard pressure range 1/2-13UNC-2B 22 deep
1.03(26.2) 3/8-16UNC-2B 18 deep
1.68 (42.9) 1.29 (33)
1.81(46)
Shown for clockwise rotation For ccw - rotation, turn port plate 180o
Ports B Pressure port SAE 1" (Standard pressure range) S Inlet port SAE 2" (Standard pressure range) L/L1 Case drain 7/8-14UNF-2B X Pilot port 7/16-20UNF-2B in model pressure control DR pilot port X is plugged
11
RA 92703/10.97 Variable displacement pump A10VO, Series 5
Dimensions size 60 Version A10VO 60
DR DFR /52 R- X S D 62 N00 DRG
For certified drawing, consult factory.
12
RA 92703/04.96 Variable displacement pump A10VO, Series 5
Dimensions size 60 Version A10VO 60
DR DFR /52 R- X S C 61 N00 DRG
For certified drawing, consult factory.
13
RA 92703/10.97 Variable displacement pump A10VO, Series 5
DR
Pressure control
The pressure control serves to maintain a constant pressure in the hydraulic system, within the control range of the pump. The pump therefore supplies only the amount of hydraulic fluid required by the actuators. Pressure may be steplessly set at the pilot valve. Dimensions see page 7,8 and 11.
Static characteristic (at n1 = 1500 rpm; toil = 122° F (50° C))
Dynamic characteristics The curves show average measured values under test conditions, unit in the tank. Conditions: n = 1500 rpm toil = 122° F (50° C) Line relief valve set at 4568.76 (315 bar) Stepped loading by suddenly opening or closing the pressure line using a pressure relief valve at 1m downstream from the axial piston unit. Control oil cosumption max. 0.793 GPM (3 L/min).
14
Size
tSA (ms) against 50 bar
tSA (ms) against 220 bar
tSE (ms) zero stroke 250 bar
28
70
65
20
45
85
75
20
60
100
85
25
RA 92703/04.96 Variable displacement pump A10VO, Series 5
DRG
Pressure control, remote control
Function and design as for DR. A pressure relief valve may be externally piped to port X for remote control purposes. It is not, however, included with the DRG control. The differential pressure at the pilot valve is set as standard to 20 bar and this results in a pilot flow of 1,5 L/min. If another setting is required (in the range 145.04–319.139 (10 – 22 bar)), please state this in clear text. We recommend that one of the following is used as the separate pressure relief valve: DBDH 6 (hydraulic) to RA 25402, DBEC-3X (electrical) to RA 29142 or DBETR-SO 381 with 0.0315in. (0.8 mm) dia. nozzle in P (electrical) to RA 29166. The length of piping must not exceed 2m. Static characteristic (at n1 = 1500 rpm; toil = 122° F (50° C))
Dimensions see pages 7, 9, 10 and 11.
Control data Hysteresis and repetitive accuracy ∆psi...max. 43.512 GPM (3 bar) Max. pressure increase Size 28 ∆psi (bar)
58.061 (4)
45
60
87.024 (6)
116.032 (8)
Control oil consumption .......... approx. 1.06 GPM (4.5 L/min) Flow loss at Qmax see page 5.
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RA 92703/10.97 Variable displacement pump A10VO, Series 5
DFR1/DFR
Pressure/flow control
DFR1
In addition to the pressure control function, the pump flow may be varied by means of a differential pressure at the actuator (e.g. a throttle, not included in supply). The pump flow is equal to the actual required flow by the actuator. The DFR1-valve has no connection between X and tank.
not included in supply
Dimensions see pages 7, 9, 10 and 11. Static characteristic (at n1 = 1500 rpm; toil = 128 °F (50° C))
Static characteristic at variable speed
DFR The function is the same as DFR1 control, however, in addition a bleed down orifice is provided to vent trapped pressure in the loadsense line.
X Max. Flow deviation (hysteresis and increase) measured at drive speed n = 1500 rpm Size GPM (∆Q L/min)
28
45
60
0.26 (1.0)
0.48 (1.8)
0.66 (2.5)
Dynamic characteristic of flow control The curves shown are measured average values under test conditions, with the unit within the tank.
B
Control oil consumption max. 0.8 GPM (3 L/min.) Flow control/differential pressure ∆p: Adjustable between 145–320 bar (10–22 bar) Standard setting: 200 psi (14 bar). If a different setting is required, please state in clear text. When port X is unloaded to tank, a zero stroke pressure of p = 260 ± 30 psi (18 ± 2 bar) ("stand by") results. tSA (ms) Size stand by–3600 psi (250 bar) 28 upon request 45 75 60 upon request
tSE (ms) tSE 3600 psi–stand by 720 psi–stand by (250 bar) (250 bar) 25
50
Optional valves at port B (not included in supply) Mobile valve blocks SP 12 (RA 64145) Mobile valve blocks SP 18 (RA 64148) Mobile valve blocks MP 18 (RA 64594) Mobile valve blocks MP 22 (RA 64598) Proportional directional valves 4WRE (RA 29060)
Mannesmann Rexroth Corporation Rexroth Hydraulics Div., Industrial, 2315 City Line Road, Bethlehem, PA 18017-2131 Tel. (610) 694-8300 Fax: (610) 694-8467 Rexroth Hydraulics Div., Mobile, 1700 Old Mansfield Road, Wooster, OH 44691-0394 Tel. (330) 263-3400 Fax: (330) 263-3333
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