Electric Drives
and Controls
Hydraulics
Linear Motion and
Assembly Technologies
Pneumatics
Service
Control systems
HM, HS, HS4 and EO
RA 92 076/06.05
Replaces: 02.97
1/32
Technical Data Sheet
for variable displacement pumps
(A)A4VSO, A4VSH and (A)A4VSG series 1 and 3
(A)A4CSG series 3
Open, semi closed and closed circuits
Contents
Ordering code /Standard program
HM1 / HM2 – hydraulic control, control vol. dependent
Unit dimensions HM1 / HM2
HS – displacement control system with servo valve
Technical data HS
Schematics and components HS
Unit dimensions HS
HS4(P) – hydraulic control system with prop. valve
Technical data HS4(P)
Schematics and components HS4(P)
Unit dimensions HS4(P)
HS4M – for oil immersed (under oil level) operation
Technical data HS4M
Unit dimensions HS4M
EO1 / EO2 – hydraulic control system with prop. valve
Technical data EO1
Schematics and components EO1
Unit dimensions EO1
Technical data EO2
Schematics and components EO2
Unit dimensions EO2
Version E without valve
K – short circuit valve
Z – sandwich plate filter
Safety information
Features
2
3
5
7
8
9
10
11
12
13
14
17
17
18
19
20
21
22
23
24
25
27
28
31
32
– Basic system to control the displacement of variable piston
pumps (A)A4VSO, A4VSH, (A)A4VSG und (A)A4CSG
– Control with servo or proportional valve
– In conjunction with amplifier and PC-program BODAC
user programmable (HS4)
– High precision control of displacement, pressure and power
(HS4P)
– Mechanical limitation of Vg min and Vg max
– Electrical control system for oil immersed mounting inside
the reservoir (HS4M)
– Special version for mooring, over centre operation and
decompression by means of the pump.
Further information:
Variable pump (A)A4VSO
Size 40...1000
RA 92050
Variable pump A4VSH
Size 40...250
RE 92110
Variable pump (A)A4VSG
Size 40...1000
RA 92100
Variable pump (A)A4CSG Size 250...750
RA 92105
2/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Ordering code /Standard program
size 40...355
size 500...1000
size 40...250
AA4VSO
A4VSO
A4VSH
size 40...355
size 500...1000
Compact unit swash plate design, size 40...355
variable / pump in closed circuit
size 500...1000
AA4VSG
A4VSG
AA4CSG
A4CSG
Swash plate design, variable /
pump in semi closed circuit
Swash plate design, variable/
pump in closed circuit
Filtration
Valves
Through drive
Ports
Mounting flange
Shaft end
Seals
–
Dir. of rotation
Fluid
Axial piston pump / Type of operation
Swash plate design, variable /
pump in open circuit
/
Series
(A)A4 . . .
Detailed information in: RA 92050 – A4VSO
RE 92110 – A4VSH
RA 92100 – A4VSG
RA 92105 – A4CSG
Size
Displacement Vg max
[cm3]
40
in3
71
125 180 250 355 500 750 1000
2.44 4.33 7.62 10.9815.2521.6630.51 45.7661.02
Control device
Hydraulic control, control
volume dependent
HM
1
HM
–
–
–
HM1
min. control pressure 725/1450/1812 psi (50/100/125 bar)
Hydraulic control, with servo valve
HS
for electric control of displacement
with VT-SR7-1X
HS
for electric and electronic control of
displacement as well as
pressure and power control
with VT -VPCD-1X
–
HM2
min. control pressure 290 psi (20 bar)
Hydraulic control,
with proportional valve
–
2
HS*
HSE
E
HS
HSK*
K
HS4*
HS4
HS4
HS4E
E
HS4
HS4K*
K
HS4
P
HS4
K P
HS4
HS4P*
HS4KP*
HS4M*
M
for oil immersed operation
with pressure transducer HM 17
with short circuit valve
supply without valve
Hydraulic control,
with proportional valve
EO
1
EO
1
for electric control of displacement
with VT 5035-1X
EO
1
E
K
EO
2
EO
2
EO
2
–
–
–
–
–
EO1*
–
–
–
–
–
EO1E
–
–
–
–
–
EO1K*
EO2*
EO2E
E
EO2K*
K
min. control pressure 290 psi (20 bar)
min. control press. 725/1450/1812 psi (50/100/125 bar)
with short circuit valve
supply without valve
Filtration (only for HS)
N
Without filter
Sandwich plate filter for HS-control
–
–
–
Z
For AA4VSG and AA4CSG: filter mounted in boost circuit and
–
–
–
U
sandwich plate filter for HS-control
= available
= in preparation
– = not available
* Operation with HF-fluids on request
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
3/32
HM1 / HM2 – hydraulic control, control volume dependent
The HM 1/2-control adjusts the pump displacement, dependent on the control oil volume.
This control is used for 2-point control systems or as a base unit for controls with proportional valves (in addition an electric feedback device is required).
The mechanical swivel angle limiting stop screws can be adjusted on both sides of centre within the range of Vg max down to 50
% Vg max , with the size 500 (HM2) from Vg max to 70% Vg max.
Spring centering of the control cylinder is standard. It is used for settings and adjustments in the unpressurized zero (centre) position, however without a defined reset during high pressure operation.
2 versions are available:
HM1 min. control pressure 290 psi (20 bar) for sizes 40, 71, 125 and 250
HM2 min. control pressure 725/1450/1812 psi (50/100/125 bar) for sizes 40...1000 see page 4
Please note:
The Vgmin-stop for the variable displacement pump (A)A4VSO for open circuits is to be adjusted, so that with blocked pressure
port B a minimum pressure of appox.. 20 bar is reached.
HM1
For pump AA4CSG with HM1 control, the necessary control pressure can be taken out of the boost circuit (Port M E3). Recommended setting of the boost pressure relief valve: 362 psi (25 bar).
The control pressure relief valve is not needed, and is replaced by a plug.
Technical data
Size
40
Control press.(in X1, X2)
71
125
pmin
psi (bar)
290 (20)
pmax
psi (bar)
1450 (100)
250
Control stroke smax
in (mm)
0.56 (14,2)
0.67 (17,1)
0.81 (20,7)
1.02 (25,9)
Control area A
in2 (cm2)
2.56 (16,6)
3.81 (24,6)
5.63 (36,3)
8.79 (56,7)
Control volume VS max
in3
1.44 (23,6) 2.57 (42,1)
4.59 (75,2)
8.97 (147)
84 (38)
202 (92)
427 (194)
(cm3)
Weight approx. (AA4VSO...HM1...N00) lbs (kg)
121 (55)
Schematic size 125 and 250
Schematic size 40 and 71
Example: closed circuit AA4VSG
Example: open circuit AA4VSO
A
B
X2
B1 B MB
X1
MB
MA
E
U S MS
K1 K2 T R(L)
U
X1
K3 K2 T R(L)
X2
X1
Control pressure port
for pressure in B with direction of rotation clockwise, swivel range* left
for pressure in A with direction of rotation ccw., swivel range* left
X2
Control pressure port
for pressure in A with direction of rotation clockwise, swivel range* right
for pressure in B with direction of rotation ccw., swivel range* right
Example schematic with proportional valve see page17
* compare swivel angle indicator
right
rechts
left
links
15° 0° 15°
Ports and direction of flow
4/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
HM2
Pump (A)A4CSG with HM2-control does not need the control pressure relief valve and the cavity is plugged.
In order to minimize the control fluid consumption the control chambers on the sizes 125...1000 are sealed and can be bled
through ports R2-R7
Technical data
Size
40
71
125
180
250
355
500
750
1000
Control pressure pmin psi (bar) 725(50) 725(50) 725(50) 1450(100) 1450(100) 1450(100) 1812(125) 1812(125) 1812(125)
(in X1, X2)
5100 (350)
pmax psi (bar)
Control stroke smax
in
(mm)
0.56
(14,2)
0.67
(17,1)
0.81
(20,7)
0.81
(20,7)
1.02
(25,9)
1.02
(25,9)
1.28
(32,6)
1.46
(37,0)
1.63
(41,4)
Control area A
in2
(cm2)
1.26
(8,1)
1.95
(12,6)
2.81
(18,1)
2.81
(18,1)
4.39
(28,3)
4.39
(28,3)
5.92
(38,2)
8.80
(56,8)
9.86
(63,6)
Control volume VS max
in3
(cm3)
0.70
(11,4)
1.31
(21,5)
2.29
(37,5)
2.29
(37,5)
4.47
(73,2)
4.47
(73,2)
7.60
(124,5)
12.81
(210)
16.07
(263,3)
84
(38)
121
(55)
202
(92)
233
(106)
427
(194)
471
(214)
719
(327)
1034
(470)
1320
(600)
Weight approx.
lbs
((A)A4VSO...HM2...N00) (kg)
Schematic size 500...1000
Schematic size 40 and 71
Example: closed circuit A4VSG
Example: open circuit AA4VSO
X2
B1 B MB
U S MS
X1
B
A
MB
MA
E
X1
MX
MX1
X2
MX2
K1 K2 T R(L)
Schematic size 125...250
Example: semi closed circuit A4VSH
B
SB SA
MB
A
U
MA
U
R5 R6 R7 K3 K2 T R(L) R4 R3 R2
X1 R5 R6 R7 K3 K2 T R(L) R4 R3 R2 X2
Ports and direction of flow
X1
Control pressure port
for pressure in B with direction of rotation clockwise, swivel range* left
for pressure in A with direction of rotation ccw., swivel range * left
X2
Control pressure port
for pressure in A with direction of rotation clockwise, swivel range* right
for pressure in B with direction of rotation ccw., swivel range* right
MX; MX1; MX2 Gauging ports control pressure (NG 500...1000)
Bleeding ports control chamber (Size 125...1000)
Example schematic with proportional valve see page 17
* compare swivel angle indicator
right
rechts
left
links
15° 0° 15°
R2-R7
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
Unit dimensions HM1 / HM2
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for AA4VSO, AA4VSG and AA4CSG
For A4VSH see RE 92076
Size 40 und 71 HM1 and HM2
Size 125 and 250 HM1
A5 to mounting flange surface
R(L)
Mounting flange
acc. to
DIN 24 340 A6
A4
A2
A2
A4
Schl.weite: 36 mm
R(L)
5/32
R 7/R 4
B
B
A 5 to mounting flange surface
R2
R3
X2
A1
A3
LR
Einschraubloch M33
A3
X1
15° 0 15°
A1
Einschraubloch M33
A3
LR
15° 0 15°
X2
R(L)
R(L)
R6
X1
R5
Ports
max. tightening torque 1)
X1; X22) Control pressure ports
ISO11926, 9/16-18UNF-2B;0.51(13) deep (Size 40...125)
3/4-16UNF-2B; 0.59(15) deep (Size 250)
59 lb-ft (80 Nm)
118 lb-ft (160 Nm)
Unit dimensions
Size
A1
A2
A3
A4
A5
40
11.65 (296)
5.35 (136)
0.94 (24)
4.02 (102)
9.49 (241)
71
13.07 (332)
6.18 (157)
1.10 (28)
4.72 (120)
125
15.83 (402)
7.52 (191)
2.64 (67)
7.34 (186,5)
250
19.09 (485)
9.37 (238)
2.80 (71)
9.17 (233)
1)
see safety information
On sizes 40 and 71 these ports are in adapters
Dimensions HM2 size 125...1000 see page 6
2)
For detailed dimensions and technical data
10.59 (269) of the variable pumps see the technical data
sheets AA4VSO RA 92050, A4VSH
9.88 (251)
RE 92110, AA4VSG RA 92100 or
12.24 (311) AA4CSG RA 92105
6/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Unit dimensions HM2
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for A4VSO, A4VSH, A4VSG and A4CSG
Size 125...355
Size 500...1000
Mounting flange
acc. to
to
mounting
flange
surface
A5
DIN 24 340 A10
R(L)
MX
A4
R 7/R 4
A2
MX1
A4
A2
X1, X2
R 7/R 4
B
A 5 to mounting flange surface
B
R2
R3
R2
X2
R3
X2
A3
Einschraubloch M33
R(L)
R(L)
R6
X1
X1
R6
R5
MX1
R5
Ports
X1; X2
max. tightening torque2)
Control pressure ports
ISO11926 9/16-18UNF-2B;0.51(13)deep (Size125a.180) 59 lb-ft (80 Nm)
3/4-16UNF-2B;0.59(15)deep (Size250a.355) 103 lb-ft (140 Nm)
DIN 3852 M27x2; 0.63 (16) deep (Size 500...1000)
243 lb-ft (330 Nm)
MX; MX1; MX2 Gauging ports control press. DIN 3852 M14x1,5; 0.47 (12) deep; 1)
R2-R7
A1
15° 0 15°
LR
A1
Einschraubloch M33
A3
LR
15° 0 15°
A3
MX2
Bleed ports control chamber DIN 3852 M10x1;0.31(8)deep;1) (Size 125...355)
M14x1,5; 0.47(12)deep;1) (Size 500...1000)
59 lb-ft (80 Nm)
22 lb-ft (30 Nm)
59 lb-ft (80 Nm)
Unit dimensions
Size
A1
A2
125/180
15.83 (402) 7.52 (191)
A3
A4
A5
2.64 (67)
8.21 (208.5) 9.88 (251)
500
21.85 (555) 11.14 (283)
750
24.80 (630) 12.60 (320)
For detailed dimensions and technical data of
the variable pumps see technical data sheets
1.97 (50) 10.79 (274) 15.28 (388)
A4VSO RA 92050, A4VSG RA 92100 or
1.97 (50) 11.97 (304) 16.54 (420) A4CSG RA 92105
1000
26.38 (670) 13.66 (347)
1.97 (50) 12.87 (327) 19.13 (486)
250/355 19.09 (485) 9.37 (238)
2.80 (71)
Dimensions HM2 size 40 and 71 see page 5
10.28 (261)
12.24 (311)
1)
plugged
2)
see safety information
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
7/32
HS – displacement control system with servo valve
for electric control of displacement with VT-SR7-1X
The HS- control adjusts the pump displacement with a servo valve proportional to a setpoint value.
The feed back of the actual pump swivel angle (pump displacement) is accomplished with a built on positional transducer. In conjunction with the compatible amplifier VT-SR7-1X we have a very accurate control of pump displacement is accomplished.
This amplifier VT-SR7-1X is not included in the scope of supply for the HS-control. Please order separately acc. to RA 29993.
Spring centering in the control cylinder is standard. It is used for settings and adjustments in the unpressurized zero position,
however without a defined reset during high pressure operation.
Mechanical swivel angle limiting stops on both sides of centre between Vg
standard.
max
and 50 % Vg max (with size 500 to 70 % Vg max) are
In order to minimize the control fluid consumption the control chambers in the sizes 125...1000 are sealed and can be bled
through the ports R2 - R7 .
In order to protect the servo valve the pump is supplied with a sandwich flushing plate (see schematic) .
After the flushing process the flushing plate must be removed and the servo valve must be screwed directly onto the subplate
(using the screws supplied). Please observe the commissioning and flushing instructions in RA 07700 and RE 29583.
Optional:
HSE without servo valve or
HSK with short circuit valve
(A)A4VSO - open circuit
Please note: On the (A)A4VSO pump for open circuit applications (swivel to one side only) the Vgmin-stop is set so that, when
port B is plugged a pressure of approx. 290 psi (20) bar is reached.
Characteristic
Direction of flow S to B
U
Umax
Direction of rotation
Swivel range*
clockwise
left
counter clockwise
right
Vg
Vgmax
A4VSH - semi closed circuit
Direction of flow
Characteristic
+
Direction of rotation
U
Umax
V
+ g
Vgmax
_ Vg
Vgmax
–
Swivel range*
clockwise
counter clockwise
B(S B) to A
A(SA) to B
right
A(SA) to B
B(S B) to A
left
U
Umax
(A)A4VSG and (A)A4CSG - closed circuit
On pump (A)A4CSG with HS-control the control pressure relief valve is not needed and replaced by a plug.
Characteristic
Direction of flow
Direction of rotation
U
Umax
_ Vg
Vgmax
+
–
U
Umax
Vg
Vgmax
Swivel range*
clockwise
counter clockwise
B to A
A to B
right
A to B
B to A
left
*compare swivel angle indicator
right
rechts
left
links
15° 0° 15°
+
8/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Technical data HS
Size
Control press. in P
pmin
psi
(bar)
pmax1)
psi
(bar)
40
71
125
180
250
355
500
750
1000
1450
(100)
1450
(100)
1450
(100)
1812
(125)
1812
(125)
1812
(125)
2175
(150)
2175
(150)
2175
(150)
4570
(315)
Control stroke smax
in
(mm)
0.56
(14,2)
0.67
(17,1)
0.81
(20,7)
0.81
(20,7)
1.02
(25,9)
1.02
(25,9)
1.28
(32,6)
1.46
(37,0)
1.63
(41,4)
Control area A
in2
(cm2)
1.26
(8,1)
1.95
(12,6)
2.81
(18,1)
2.81
(18,1)
4.39
(28,3)
4.39
(28,3)
5.92
(38,2)
8.80
(56,8)
9.85
(63,6)
Control volume VS max
in3
(cm3)
0.70
(11,4)
1.31
(21,5)
2.29
(37,5)
2.29
(37,5)
4.47
(73,2)
4.47
(73,2
7.60
12.81
(124,5) (210)
16.06
(263,3)
Control time tmin2)
s
0,04
0,06
0,09
0,09
0,12
0,12
0,15
0,2
*
Weight approx. (A4VSO...HS...N00)
lbs
(kg)
92
(42)
130
(59)
216
(98)
246
(112)
440
(200)
284
(220)
733
(333)
1047
(476)
1333
(606)
Quality of control loop
1)
hysteresis
≤ 0,2 %
repeating accuracy
≤ 0,2 %
swivel angle linearity
deviation
≤ 1,0 %
conditional upon permissible data of servo valve
at min. control pressure
* on request
2)
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
9/32
Schematics and components HS
Schematic size 40 and 71
Schematic size 500....1000
Example: open circuit AA4VSO
Example: closed circuit A4VSG
B
2
MB1
MA1
6
5
RKV
B1 B MB
S
RKV
MB2
6
B
T
A
P
5
P
MP
MA2
S
U
1.3
3
1.1
K1 K2 T R(L)
S MS
4.2
E
SP
P
2
A
U
U
3
R5 R6 R7 K3 K2 T R(L) R4 R3 R2
Schematic size 125...355
Example: semi closed circuit A4VSH
2
B
SB SA
A
MB
4.1
MA
RKV
6
SP
P
5
Ports
P; SP
S
1.2
U
U
3
M1 R5 R6 R7 K1 K2 T R(L) R4 R3 R2 M2
Control pressure ports
R KV
Return line control fluid
MA2; M B2; M P
Gauging port control pressure (plugged),
size 500...1000
M1; M2
Gauging ports control pressure (plugged),
size 125...355
R2 - R7
Bleed port control chamber (plugged),
size 125...1000
Components
1
Pump with hydraulic control device
1.1
AA4VSO (see RA 92050)
1.2
A4VSH (see RE 92110)
1.3
A4VSG (see RA 92100)
2
4/3-way servovalve (see RE 29583)
Size
Type
40 and 71
4WS2EM10-5X/20B11ET315K31EV
125 and 180
4WS2EM10-5X/30B11ET315K31EV
250 and 355
4WS2EM10-5X/45B11ET315K31EV
500...1000
4WS2EM10-5X/75B11ET315K31EV
3
Inductive positional transducer IW9-03-01
with plug to DIN EN 175 301-803-A / ISO 4400
cable connection M16x1,5 cable diameter 4,5...10mm
4.1
Anti cavitation valve (A4VSH)
4.2
boost inlet check valves (A4VSG)
5
Sandwich plate
6
Flushing plate
with cable box to DIN EN 175.201-804
for cable diameter 8...13,5mm
10/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Unit dimensions HS
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for AA4VSO, AA4VSG and AA4CSG
For A4VSH see RE 92076
Size 40...355
2
3
6
R(L)
RKV
A 11
Schl.weite: 36 mm
1
A5
R 7/R 4
A8
5
A 2 with flushing plate
A 3 without flushing plate
A7 to mounting flange surface
A4 to mounting flange surface
P
B
R2
Part view W
R3
SP
RKV
M2
W
A1
M4 (x0.7)
M4 (x0.7)
Einschraubloch M33
A6
MM66((xx11))
15° 0 15°
LR
MM66 ((x1)
A9
A 10
R KV
P
R(L)
M1
R6
P
R5
Components see page 9
Ports
max. tightening torques2)
deep1)
P; Sp
Control pressure port
ISO 11926 7/8-14UNF-2B;0.67(17)
R KV
Return line control fluid
ISO 11926 7/8-14UNF-2B;0.67(17) deep
154 lb-ft (210 Nm)
154 lb-ft (210 Nm)
M1; M2 Gauging port control pressure DIN 3852 M14x1,5;0.47(12)deep; plugged (Size 125 a. 180) 59 lb-ft (80 Nm)
M18x1,5;0.47(12)deep; plugged (Size 250 a. 355) 103 lb-ft (140 Nm)
R2-R7 Bleed port control chamber
DIN 3852 M10x1; 0.31(8) deep; plugged (Size 125...355) 22 lb-ft (30 Nm)
Unit dimensions
Size
A1
40
11.65(296) 10.59(269) 10.00(254) 8.74(222) 4.25(108) 2.91(74) 12.05(306) 5.04(128) 1.38(35) 3.31(84) 9.69(246)
A2
A3
A4
A5
A6
A7
A8
A9
A10
71
13.07(332) 11.30(287) 10.72(272) 9.80(249) 4.84(123) 3.11(79) 13.11(333) 5.63(143) 1.18(30) 3.11(79) 10.35(263)
125/180
15.85(402) 11.97(304) 11.38(289) 12.17(309) 5.83(148) 2.76(70) 15.08(383) 5.83(148) 0
2.76(70) 11.73(298)
250/355 19.09(485) 13.43(341) 12.83(326) 14.61(371) 7.24(184) 2.76(70) 17.52(445) 7.24(184) 0
1)
SP plugged
A11
2.76(70) 13.58(345)
2)
see safety information
For detailed unit dimensions and technical data on the variable pumps see technical data sheets AA4VSO RA 92050,
A4VSH RE 92110, AA4VSG RA 92100 or AA4CSG RA 92105
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
11/32
HS4(P) – hydraulic control system with proportional valve
for electric and electronic displacement as well as pressure and power control with VT-VPCD-1X
= 100 % Actual power
Swivel angel
actual (αact)
Swivel angle in %
Desired
power
0
Operating pressure
Actual pressure
The HS4-control adjusts the pump displacement with a directly controlled proportional valve proportional to a setpoint value.
Actual pump swivel angle (displacement) feedback is provided by means of a position transducer. Control HS4P features a built
on pressure transducer HM17 which serves to detect and feed back system pressure, pumps A4VSG aund A4CSG have a pressure transducer on each pressure side. In conjunction with the compatible control module VT-VPCD and the operating software
BODAC the user has at his disposal a highly accurate and user programmable control, which offers a comfortable operating and
diagnostics interface.
The digital control amplifier VT-VPCD-1X to drive the HS4-control is not included in the scope of supply. It must be ordered separately to RE 30028 .
Programming the digital control amplifier VT-VPCD is executed via the amplifier‘s serial interface with the PC-program BODAC.
For more information see RE 30028.
Optional:
HS4P with pressure transducer for additional pressure and power control
HS4E without proportional valve
HS4K, HS4KP with short circuit valve
HS4M for operation under oil level
Stop screws to limit the swivel angle between Vg
dard.
max
and 50 % Vg max (for size 500 to 70 % Vg max) for both side of centre are stan-
Spring centering in the control cylinder is standard. It is used for settings and adjustments in the unpressurized zero position,
however without a defined reset during high pressure operation.
In order to minimize the control fluid consumption the control chambers in pump sizes 125...1000 are sealed and can be bled via
ports R2 - R7 .
(A)A4VSO – open circuit
When the valve is de-energized and the control pressure is on the pump swivels towards Vg min.
The Vg min-stop set so that, when port B is plugged, a pressure of approx. 290 psi (20 bar) is reached.
A4VSH, (A)A4VSG, (A)A4CSG – closed and semi closed circuit
For controls of these pumps without short circuit valve it must be noted, that, when the valve is de-energized and the control
pressure is on the pump will stroke towards Vg max (swivel angle range to the right).
On pumps A4CSG with HS4-control the control pressure relief valve is not needed and replaced by a plug.
12/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Technical data HS4(P)
Size
Control press. in P
pmin
psi
(bar)
pmax1)
psi
(bar)
40
71
125
180
250
355
500
750
1000
1450
(100)
1450
(100)
1450
(100)
1812
(125)
1812
(125)
1812
(125)
2175
(150)
2175
(150)
2175
(150)
4570
(315)
Control stroke smax
in
(mm)
0.56
(14,2)
0.67
(17,1)
0.81
(20,7)
0.81
(20,7)
1.02
(25,9)
1.02
(25,9)
1.28
(32,6)
1.46
(37,0)
1.63
(41,4)
Control area A
in2
(cm2)
1.26
(8,1)
1.95
(12,6)
2.81
(18,1)
2.81
(18,1)
4.39
(28,3)
4.39
(28,3)
5.92
(38,2)
8.80
(56,8)
9.85
(63,6)
Control volume VS max
in3
(cm3)
0.70
(11,4)
1.31
(21,5)
2.29
(37,5)
2.29
(37,5)
4.47
(73,2)
4.47
(73,2
7.60
12.81
(124,5) (210)
16.06
(263,3)
Control time tmin2)
s
0,04
0,06
0,09
0,09
0,12
0,12
0,15
0,2
*
Weight approx. (A4VSO...HS...N00)
lbs
(kg)
92
(42)
130
(59)
216
(98)
246
(112)
440
(200)
284
(220)
733
(333)
1047
(476)
1333
(606)
Quality of control loop
hysteresis
≤ 0,2 %
repeating accuracy
≤ 0,2 %
swivel angle linearity
deviation
≤ 1,0 %
pressure linearity
deviation
1)
conditional upon permissible data of servo valve
at min. control pressure
* on request
2)
≤ 1,5 % of pmax3)
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
13/32
Schematics and components HS4(P)
Schematics size 125...355
On sizes 40 and 71 the ports M1, M2 and R2-R7 are deleted
Example: AA4VSO HS4P (with pressure transducer)
Direction of rotation clockwise
Direction of rotation counter clockwise
P
T
P
T
a
b
b
(6)
I
B1 B MB
P
a
A
B
a
b
b
A
a
2
SP
P
5
RKV
B
S
1.1
(6)
I
U
B1 B MB
RKV
2
5
SP
P
1.1
P
3
U S MS M1 R5 R6 R7 K1 K2 T R(L) R4 R3 R2 M2
Schematic size 500...1000
Example: A4VSG HS4 (without pressure transducer)
B
A
P
T
MA1
4
a
bb
b
B
A
RKV
MB2
E
a
2
5
MP
P
MA2
Ports
1.2
S
U
3
U
P; SP
Control pressure port
R KV
Return line control fluid
M1; M2
Gauging ports
control pressure(Size 125...355)
MA2; M B2; M P
Gauging ports
control pressure (Size 500...1000)
R2 - R7
Bleed port control chamber
Size 125...1000
R5 R6 R7 K3 K2 T R(L) R4 R3 R2
Components
1
Pump with hydraulic control device
1.1
AA4VSO (see RA 92050)
1.2
A4VSG (see RA 92100)
2
4/3-proportional valve (see RA 29061) with electric positional feedback (incl. cable connector 4-pin Pg7-G4W1F)
Size
Type
40...180
4WRE6V08-2X/G24K4/V-822
250...1000
4WRE6V16-2X/G24K4/V-822
U
3
U S MS M1 R5R6 R7 K1 K2 T R(L) R4 R3 R2 M2
MB1
S
solenoids with plugs to DIN EN 175.301-803 / ISO 4400
cable screw joint M16x1,5 for cable diameter 4,5...10mm
3
Inductive positional transducer AWXF004D01 with plug in connector 4-pin Pg7-G4W1F
4
Boost inlet check valves ((A)A4VSG)
5
Sandwich plate
6
only on HS4P pressure transducer HM17-1X/450-C/VO/O (see RE 30269) with adaptor flange,
on (A)A4VSG and (A)A4CSG each pressure side has a built on pressure transducer
14/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Unit dimensions HS4(P)
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
On AA4VSO for direction of rotation clockwise and ccw. some dimensions are different.
For AA4VSG and AA4CSG the dimensions under„right“ are valid for both directions of rotation
For A4VSH see RE 92076
Sizes 40 and 71 Example AA4VSO HS4P with a pressure transducer in port B
A 7 to mounting flange surface
A 4 to mounting flange surface
2
3
5
P
(SP)
RKV
--a
40
1
A3
A8
A5
with press. transducer item 6:
Adapter flange with 30 mm through
holes for fixing screws
(For thread of fixing screws see relevant
data sheets of pumps)
--
Transport protection
M12 (x1.75)
Part view W
B
(6)
Schl.weite: 13 mm
Valve position on A4VSH,
AA4VSG, AA4CSG and
AA4VSO direction of rotation
clockwise
Schl.weite: 36 mm
SP
LR
15° 0 15°
A1
A9
A 10
RKV
A2
--
W
Einschraubloch M33
A6
M5 (x0.8)
A2
R(L)
30
P
Valve position on
AA4VSO direction of rotation
counter clockwise
Schl.weite: 36 mm
Components see page 13
Ports
max. tightening torques1)
P
Control pressure port
ISO 11926 7/8-14UNF-2B; 0.67(17) deep
154 lb-ft (210 Nm)
Sp
Control pressure port
DIN 3852 M22x1,5; 0.55(14) deep; plugged
154 lb-ft (210 Nm)
R KV
Return line control fluid
ISO 11926 7/8-14UNF-2B; 0.67(17) deep
154 lb-ft (210 Nm)
Unit dimensions
Size A1
A2 left A2 right A3
A6
A7 right A7 left A8 right A8 left A9 right A9 left A10
40
11.65
(296)
6.54
(166)
6.85
(174)
8.90 9.65 8.74 9.04
4.25
(226) (245) (222) (229,5) (108)
2.91
(74)
12.05 11.26 5.04
(306) (286) (128)
3.70
(94)
1.38
(35)
0.20
(5)
2.13
(54)
71
13.07
(332)
6.73
(171)
6.65
(169)
9.49
(241)
3.11
(79)
13.11 12.32 5.63
(333) (313) (143)
4.29
(109)
1.18
(30)
0
1.93
(49)
left
A3 right A4 right A4 left
A5
10.28 9.80 10.10 4.84
(261) (249) (256,5) (123)
Dimensions size 125...1000 see page 15 and 16
1)
see safety instructions
For detailed unit dimensions and technical data of the variable pumps see technical data sheets of AA4VSO RA 92050, A4VSH
RE 92110, AA4VSG RA 92100 or AA4CSG RA 92105
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
Unit dimensions HS4(P)
15/32
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
With AA4VSO the dimension A4 is different for clockwise and counter clockwise direction of rotation.
With A4VSH, AA4VSG and AA4CSG the dimension A4 right is valid for both directions of rotation
For A4VSH see RE 92076.
Size 125...355 Example AA4VSG HS4P with a pressure transducer in each of the ports A and B
A 7 to mounting flange surface
A 4 to mounting flange surface
3
2
with pressure transducer item 6:
Adapter flange with 30 mm through
holes for fixing screws
(For thread of fixing screws see the
relevant data sheet of the pump)
5
RKV
--a
40
--
1
A3
--
Einschraubloch M22
P
A8
B
R 7/R 4
A5
M10 (x1.5)
Transport protection
M14 (x2)
(6)
Part view W
A
SP
R3
Schl.weite: 13 mm
15° 0 15°
W
f
Einschraubloch M33
Einschraubloch M22
A9
LR
A1
A6
RKV
Valve position on A4VSH,
A4VSG, AA4CSG and
AA4VSO direction of rotation
clockwise
M2
R2
P
30
R(L)
R6
Valve position on
AA4VSO direction of rotation
counter clockwise
M1
R5
Components see page 13
Ports
max. tightening torque 1)
P
Control pressure port
ISO 11926 7/8-14UNF-2B; 0.67(17) deep
154 lb-ft (210 Nm)
Sp
Control pressure port
DIN 3852 M22x1,5; 0.55 (14) deep; plugged
154 lb-ft (210 Nm)
R KV
Return line control fluid
ISO 11926 7/8-14UNF-2B; 0.67(17) deep
154 lb-ft (210 Nm)
M1; M2 Gauging ports control pressure DIN 3852 M14x1,5;0.47(12)deep;plugged (Size 125 a. 180) 59 lb-ft (80 Nm)
M18x1,5;0.47(12)deep;plugged (Size 250 a. 355) 103 lb-ft (140 Nm)
R2-R7
Bleed port control chamber
DIN 3852 M10x1; 0.31 (8) deep; plugged
22 lb-ft (30 Nm)
Unit dimensions
Size
A1
125/180
15.83(402) 11.02(280) 12.20(310) 12.54(318,5) 6.14(156) 1.54(39) 15.09(383) 5.83(148) 2.76(70)
A3
A4 right
A4 left
A5
A6
A7
A8
250/355 19.09(485) 12.44(316) 14.65(372) 14.98(380,5) 7.56(192) 1.54(39) 17.52(445) 7.24(184)
Dimensions sizes 40 and 71 see page 14
1)
A9
2.76(70)
see safety information
For detailed unit dimensions and technical data of the variable pumps see the technical data sheets of the pumps
AA4VSO RA 92050, A4VSH RE 92110, AA4VSG RA 92100 or AA4CSG RA 92105
16/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Unit dimensions HS4(P)
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for A4VSO, A4VSG and A4CSG
Size 500...1000 Example HS4P with a pressure transducer in port B
3
MP MB2
5
with pressure transducer item 6:
Adapter flange with 30 mm through
holes for fixing screws
(For thread of fixing screws see relevant
data sheet of the pump)
A2
02437369
1
A4
2
Transport protection
R7/R 4
M12 (x1.75)
B
(6)
A 5 to mounting flange surface
MA
R3 R2
02437369
Valve position on A4VSG,
A4CSG and A4VSO direction of
rotation clockwise
A6
15° 0 15°
02422845
Einschraubloch M33
02437369
LR
A1
00988104
Rkv
R(L)
30
P
R6
R5
A 3 to mounting flange surface
Valve position on A4VSO
direction of rotation ccw.
Components see page 13
Ports
P
R KV
max. tightening torque 1)
Control pressure port
Return line control fluid
MA2; M B2; M P Gauging ports control pressure
R2 - R7
Bleed port control chamber
DIN 3852
M27x2; 0.63 (16) deep
242 lb-ft (330 Nm)
DIN 3852
M27x2; 0.63 (16) deep
242 lb-ft (330 Nm)
DIN 3852
M14x1,5; 0.47 (12) deep; plugged
59 lb-ft (80 Nm)
DIN 3852
M14x1,5; 0.47 (12) deep; plugged
59 lb-ft (80 Nm)
Unit dimensions
Size
A1
A2
A3
A4
A5
A6
500
21.85
(555)
14.21
(361)
15.34
(392)
10.79
(274)
15.28
(388)
1.97
(50)
750
24.80
(630)
15.75
(400)
16.69
(424)
11.97
(304)
16.54
(420)
1.97
(50
1000
26.38
(670)
16.81
(427)
19.29
(490)
12.87
(327)
19.13
(486)
1.97
(50
Dimensions size 40...355 see page 14 and 15
For detailed unit dimensions and technical data of the variable
pumps see the technical data sheets of
A4VSO RA 92050, A4VSG RA 92100 or A4CSG RA 92105
1)
see safety information
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
17/32
HS4M – for oil immersed (under oil level) operation
Control option HS4M corresponds to the HS4 version however without proportional valve, but with control pressure ports X1 and X2.
The proportional valve can be mounted separately into the system and be connected to the relevant ports X1 and X2 of the pump.
The pump unit together with the attached positional transducer can be mounted inside the reservoir.
Recommended:
Please note:
proportional valve 4WRE6-2X see RA 29061
electronic control VT-VPCD-1X see RE 30028
cable see RE 30028-B
On the (A)A4VSO pumps for open circuit applications (swivel to one side only) the Vgmin-stop is set so that, when port B is
plugged, a pressure of approx. 290 psi (20 bar) is reached.
On (A)A4CSG with HS4M the control pressure relief valve is not needed and replaced by a plug.
Schematic example open circuit
(A)A4VSO size 125...500
Direction of rotation clockwise
Direction of rotation counter clockwise
a
b
b
B1 B MB
is not part of the supply of the
HS4M
P
T
B
X1
b
X2
B
a
A
X1
B1 B MB
S
a
b
a
A
P
T
X2
S
U
U S MS R5 R6 R7 K1 K2 T R(L) R4 R3R2
U
U S MS R5 R6 R7 K1 K2 T R(L) R4 R3R2
Inductiv positional transducer AWXF004D01
with 4-pin plug in connector Pg7-G4W1F
Ports and direction of flow
Control pressure port
for pressure in B with direction of rotation clockwise, swivel range* left
for pressure in A1) with direction of rotation ccw., swivel range left* links
X2
Control pressure port
for pressure in A1) with direction of rotation clockwise, swivel range* right
for pressure in B with direction of rotation ccw., swivel range* right
R2-R7
Bleed port control chamber (Size 125...1000)
1)
on semi closed and closed circuit only
* compare swivel angle indicator
right
rechts
left
links
15° 0° 15°
X1
Technical data HS4M
Size
Control pressure (in X1, X2) pmin
psi
(bar)
pmax
psi
(bar)
40
71
125
180
250
355
500
750
1000
725
(50)
725
(50)
725
(50)
1450
(100)
1450
(100)
1450
(100)
1812
(125)
1812
(125)
1812
(125)
5100
(350)
Control stroke smax
in
(mm)
0.56
(14,2)
0.67
(17,1)
0.81
(20,7)
0.81
(20,7)
1.02
(25,9)
1.02
(25,9)
1.28
(32,6)
1.46
(37,0)
1.63
(41,4)
Control area A
in2
(cm2)
1.26
(8,1)
1.95
(12,6
2.81
(18,1)
2.81
(18,1)
4.39
(28,3)
4.39
(28,3)
5.92
(38,2)
8.80
(56,8)
9.86
(63,6)
Control volume VS max
in3
(cm3)
0.70
(11,4)
1.31
(21,5)
2.29
(37,5)
2.29
(37,5)
4.47
(73,2)
4.47
(73,2)
7.60
12.81
(124,5) (210)
16.07
(263,3)
84
(38)
121
(55)
202
(92)
233
(106)
427
(194)
471
(214)
719
(327)
1320
(600)
Weight approx. (A4VSO...HS4M..N00)lbs
(kg)
1034
(470)
18/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Unit dimensions HS4M
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for A4VSO, A4VSH, A4VSG and A4CSG
For A4VSH see RE 92076
Sizes 125...355
A4
A2
A4
A2
Sizes 40, 71 and 500
B
B
A 5 to mounting flange surface
A 5 to mounting flange surface
Inductive
positional transducer size 40
X2
A1
A3
A3
Einschraubloch M33
A3
X1
15° 0 15°
LR
A1
Schl.weite: 36 mm
Einschraubloch M33
Schl.weite: 36 mm
LR
15° 0 15°
X2
R(L)
R(L)
X1
Ports
X1; X2
max. tightening torque 1)
Control pressure ports ISO 11926 9/16-18UNF-2B; 0.51(13) deep (Size 40...180)
59 lb-ft (80 Nm)
ISO 11926 3/4-16UNF-2B; 0.59 (15) deep (Size 250 a. 355)
103 lb-ft (140 Nm)
DIN 3852
154 lb-ft (210 Nm)
M22x1,5; 0.55 (14) deep
(Size 500)
Unit dimensions
Size
A1
A2
A3
A4
A5
40
11.65(296)
8.72(221,5)
0.94(24)
4.02(102)
9.49(241)
71
13.07(332)
9.57(243)
1.10(28)
4.72(120)
10.59(269)
125/180
15.83(402)
10.75(273)
2.64(67)
8.21(208,5)
9.88(251)
250/355
19.09(485)
12.17(309)
2.80(71)
10.28(261)
12.24(311)
500
21.85(555)
14.21(361)
8.82(224) 8.07(205)
Sizes 750 and 1000 on request
For detailed unit dimensions and technical
data of the variable pumps see the technical data sheets of (A)A4VSO RA 92050,
A4VSH RE 92110, (A)A4VSG RA 92100 or
(A)A4CSG RA 92105
15.71(399)1)
1)
see safety information
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
19/32
EO1 / EO2 – hydraulic control system with proportional valve
for electric control of displacement with VT 5035-1X
The EO1/2 control adjusts the pump displacement proportional to a command input value, by means of a built on directly driven
proportional directional valve.
The feedback signal for the actual pump swivel angle (displacement) is provided by a positional transducer.
The max. swivel angle can be adjusted on both sides of centre with stop screws between Vg
size 500 (EO2) from Vg max to 70 % Vg max.
max
and 50 % Vg max for the pump
Spring centering of the control cylinder is standard. It is used for settings and adjustments in the unpressurized zero position, however without a defined reset during high pressure operation.
The electric amplifier VT 5035-1X to control the pump displacement is not included in the scope of supply for the EO control, it
must be ordered separately acc. to RA 29955.
2 versions are available:
EO1 min. control pressure 290 psi (20 bar) for pump sizes 40...250 see page 20...22
EO2 min. control pressure 725/1450/1812 psi (50/100/125 bar) for pump sizes 40...1000 see page 23...26
(A)A4VSO - open circuit
Please note: On the (A)A4VSO pump for open circuit applications (swivel to one side only) the Vgmin-stop is set so that, when
port B is plugged a pressure of approx. 290 psi (20 bar) is reached.
Direction of flow S to B
Characteristic
U
Umax
Direction of rot.
Swivel range* / or solenoid energized
Clockwise
left / a
Counterclockwise
right / b
Vg
Vgmax
A4VSH - semi closed circuit
Characteristic
Direction of flow
U
+
Umax
V
+ g
Vgmax
_ Vg
Vgmax
–
Swivel range* /
or solenoid energized
Direction of rot.
clockwise
c. clockwise
right / b
B(S B) to A
A(SA) to B
left / a
A(SA) to B
B(S B) to A
Swivel range* /
or solenoid energized
Direction of rot.
clockwise
c. clockwise
right / b
B to A
A to B
left / a
A to B
B to A
U
Umax
(A)A4VSG and (A)A4CSG - closed circuit
U
+
Umax
Vg
+
Vgmax
_ Vg
Vgmax
* compare swivel angle indicator
–
U
Umax
right
rechts
left
links
15° 0° 15°
Direction of flow
Characteristic
20/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Technical data EO1
Size
40
Control pressure in P
71
125
pmin
psi (bar)
290 (20)
pmax
psi (bar)
1450 (100)
250
Control stroke smax
in (mm)
0.56(14,2)
0.67(17,1)
0.81(20,7)
1.02(25,9)
Control area A
in2 (cm2)
2.57(16,6)
3.81(24,6)
5.63(36,3)
8.79(56,7)
Control volume VS max
in3
1.44(23,6)
2.57(42,1)
4.59(75,2)
8.97(147)
s
0,12
0,20
0,22
0,40
lbs (kg)
92(42)
130(59)
216(98)
200
Control time
tmin1)
Weight approx. (A4VSO...EO1..N00)
(cm3)
max. hysteresis ∆ Vg 2)
≤ ±
min. repeating accuracy 2)
≤ ± 1,5 % of Vg max
Linearity deviation
1)
2)
2)
at 725 psi (50 bar) control pressure
Values valid for constant operating temperatue of 122°F (50 °C)
≤
2 % of Vg max
2,5 % of Vg max
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
21/32
Schematics and components EO1
The control fluid, externally supplied through port P leaves the pump through the case drain ports R(L) .
For pump type AA4CSG with EO1- control, the control is fed from the boost circuit (port M E3) , that means port P is piped already
. Recommended setting of boost pressure relief valve: 365 psi (25 bar).
Schematic sizes 40 and 71
Schematic sizes 125 and 250
Example: closed circuit AA4VSG
4
B
Example: open circuit AA4VSO
A
MB
MA
2
B1 B M B
s
K2 K3 T R(L)
SP
P
5
RKV
s
U
1.2
3
1.1
U
2
a
b
E
a
b
P
U S MS M1
3
K1 K2 T R(L)
M2
Ports
P; SP
Control pressure porte (SP only on sizes 125 and 250)
R KV
Return line control fluid (sizes 125 and 250)
M1; M2
Gauging ports control pressure (sizes 125 and 250)
Components
1
Pump with hydraulic control device
1.1
AA4VSG (see RA 92100)
1.2
AA4VSO (see RA 92050)
2
4/3-way proportional valve
Size
Type
40 and 71
4WRA6V15-2X/G24N9Z4/V-589
125 u. 250
with plug in connector to DIN EN 175 301-803 / ISO 4400
4WRA6V30-2X/G24N9Z4/V-589 Cable joint M16x1,5 for cable diameter 4,5..10mm
3
Inductiv positional transducer IW9-03-01
with plug in connector to DIN EN 175 301-803-A / ISO 4400
cable joint M16x1,5 for cable diameter 4,5...10mm
4
Boost inlet check valves (A4VSG)
5
Throttle plate
U
22/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Unit dimensions EO1
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for AA4VSO, AA4VSG and AA4CSG
For A4VSH see RE 92076
Sizes 40 and 71
Sizes 125 and 250
A 4 to mounting flange surface
3
3
P
R KV
1.1
A2
A7
A5
5
A5
2
A2
1.1
2
R(L)
P(SP)
B
R 7/R 4
Part view W
SP
SP
M2
R KV
A6
15° 0 15°
A6
Schl.weite: 36 mm
R(L)
P
R(L)
W
A9
LR
E i n s c hraubloch M33
A9
LR
A1
Einschraubloch M22
15° 0 15°
R2
R3
RKV
P
Einschraubloch M33
B
A1
A3 to mounting flange surface
A4 to mounting flange surface
R6
R5
M1
P
A8 to mounting flange surface
Components see page 21
Ports
max. tightening torques 2)
P
Control pressure port
ISO 11926 9/16-18UNF-2B;0.51(13)deep
ISO 11926 7/8-14UNF-2B;0.67(17)deep
(Size 40 and 71) 59 lb-ft (80 Nm)
(Size 125 and 250) 154 lb-ft (210 Nm)
SP
Control pressure port
DIN 3852 M22x1,5; 0.55(14) deep 1)
(Size 125 and 250) 154 lb-ft (210 Nm)
R KV
Return line control fluid
DIN 3852 M22x1,5; 0.55(14) deep
1)
(Size 125 and 250) 154 lb-ft (210 Nm)
1)
M1; M2 Gauging ports control press. ISO 11926 9/16-18UNF-2B;0.51(13)deep (Size125)
ISO 11926 3/4-16UNF-2B;0.59(15)deep 1) (Size250)
59 lb-ft (80 Nm)
118 lb-ft (160 Nm)
R2-R7 Bleed port control chamber DIN 3852 M10x1; 0.31(8) deep 1)
7.5 lb-ft (10 Nm)
(Size 125...355)
Unit dimensions
Size A1
A2
A3
A4
A5
A6
A7
A8
A9
40
9.69
(246)
10.43
(265)
11.73
(298)
13.58
(345)
10.98
(279)
12.05
(306)
–
7.01
(178)
8.07
(205)
12.28
(312)
14.65
(372)
5.31
(135)
5.98
(152)
6.14
(156)
7.56
(192)
–
–
–
–
–
–
–
–
1.54
(39)
1.54
(39)
5.83
(148)
7.24
(184)
13.86
(352)
16.22
(412)
2.76
(70)
2.76
(70)
71
125
250
1)
11.65
(296)
13.07
(332)
15.83
(402)
19.09
(485)
plugged
–
For detailed unit dimensions and technical
data of the variable pumps see the technical
data sheets for the AA4VSO RA 92050,
A4VSH RE 92110, AA4VSG RA 92100 or
AA4CSG RA 92105
2)
see safety information
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
23/32
Technical data EO2
Size
Control press. in P
pmin
psi
(bar)
pmax1)
psi
(bar)
40
71
125
180
250
355
500
750
1000
725
(50)
725
(50)
725
(50)
1450
(100)
1450
(100)
1450
(100)
1812
(125)
1812
(125)
1812
(125)
4570
(315)
Control stroke smax
in
(mm)
0.56
(14,2)
0.67
(17,1)
0.81
(20,7)
0.81
(20,7)
1.02
(25,9)
1.02
(25,9)
1.28
(32,6)
1.46
(37,0)
1.63
(41,4)
Control area A
in2
(cm2)
1.26
(8,1)
1.95
(12,6)
2.81
(18,1)
2.81
(18,1)
4.39
(28,3)
4.39
(28,3)
5.92
(38,2)
8.80
(56,8)
9.86
(63,6)
Control volume VS max
in3
(cm3)
0.70
(11,4)
1.31
(21,5)
2.29
(37,5)
2.29
(37,5)
4.47
(73,2)
4.47
(73,2)
7.60
(124,5)
12.81
(210)
16.07
(263,3)
Control time tmin2)
s
0,1
0,12
0,2
0,2
0,25
0,25
0,3
*
*
92
(42)
130
(59)
216
(98)
246
(112)
440
(200)
484
(220)
744
(338)
1058
(481)
1344
(611)
Weight approx. (A4VSO..EO2..N00) lbs
(kg)
max. hysteresis ∆ Vg 3)
min. repeating accuracy
Linearity deviation
1)
≤ ±
3)
3)
limited by permissible data of proportional valve
2) at minimum control pressure
3) Values are valid for constant operating temperature of 122°F (50 °C)
* on request
2 % of Vg max
≤ ± 1,5 % of Vg max
≤
2,5 % of Vg max
24/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Schematics and components EO2
The control fluid, externally supplied through port P leaves the housing through the case drain ports R(L) on pumps up to incl.
size 355 . As of the size 500 the port R KV must be connected to tank to drain this control fluid.
On pump type (A)A4CSG with EO2-control the control pressure relief valve is not needed and replaced by a plug.
In order to minimize the control fluid consumption the control chambers on the sizes 125...1000 are sealed and can be bled via
ports R2 - R7 .
Schematic sizes 40 and 71
Schematic sizes 500...1000
Example: open circuit (A)A4VSO
Example: closed circuit A4VSG
b
a
2
2
B
B1 B M B
SP
P
5
RKV
S
MB1
6
MA3
5
U
a
5
R5 R6 R7 K2 K3 T R(L) R4 R3 R2
2
Ports
SP
P
S
U
1.1
3
U S MS M1R5R6R7 K1 K2 T R(L) R4R3R2 M2
P; SP
Control pressure ports
R KV
Return line control fluid
M1; M2
Gauging ports control pressure
(Size 125...355)
MA2; M B2; M P; MA3; M B3
Gauging ports control pressure
(Size 500...1000)
R2-R7
Bleed port control chamber
(Size 125...1000)
Components
Pump with hydraulic control device
1.1
AA4VSO (see RA 92050)
1.2
A4VSG (see RA 92100)
2
4/3-way proportional valve
3
Size
Type
40 and71
4WRA6V15-2X/G24N9Z4/V-589
125...355
4WRA6V30-2X/G24N9Z4/V-589
500...1000
4WRE10E25-2X/24Z4/V-93
with plug in connector to DIN EN 175 301-803 / ISO 4400
cable joint M16x1,5 for cable diameter 4,5..10mm
Inductiv positional transducer IW9-03-01
with plug in connector DIN EN 175 301-803 / ISO 4400
cable joint M16x1,5 for cable diameter 4,5...10mm
4
Boost inlet check valves (A4VSG)
5
Sandwich plate
U
1.2
b
1
MP
P
MA2
S
Example: open circuit (A)A4VSO
RKV
A
3
Schematic sizes 125...355
B1 B M B
a
RKV
MB2
K1 K2 T R(L)
U S MS
b
MA1
MB3
E
U
1.1
4
3
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
Unit dimensions EO2
25/32
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for AA4VSO, A4VSH, AA4VSG and AA4CSG
Sizes 40...355
to mounting flange surface
to mounting flange surface
A7
A4
2
3
1.1
A5
5
A8
A2
A3
R KV
P
B
R 7/R 4
Part view W
R2
R3
M2
SP
A9
W
A6
A6
15° 0 15°
A9
LR
Einschraubloch M 3 3
A1
RKV
A 10
RKV
R(L)
P
R6
M1
R5
Components see page 24
Ports
P
max. tightening torque 2)
P
Control pressure port
ISO 11926 7/8-14UNF-2B; 0.67 (17) deep
154 lb-ft (210 Nm)
SP
Control pressure port
DIN 3852 M22x1,5;0.55(14) deep; plugged
154 lb-ft (210 Nm)
R KV
Return line control fluid
DIN 3852 M22x1,5;0.55(14) deep; plugged
154 lb-ft (210 Nm)
M1; M2 Gauging ports control pressure DIN 3852 M14x1,5;0.47(12) deep; plugged (Size 125 a. 180) 59 lb-ft (80 Nm)
M18x1,5;0.47(12) deep; plugged (Size 250 a. 355) 103 lb-ft (140 Nm)
R2-R7 Bleed port control chamber
DIN 3852 M10x1;0.31(8) deep; plugged
(Size 125...355) 7.5 lb-ft (10 Nm)
Unit dimensions
Size
A1
40
71
A2
A3
A4
A6
A7
A9
A10
11.65 9.76 9.69 8.74 4.25
(296) (248) (246) (222) (108)
2.91
(74)
10.75 5.04
(273) (128)
1.38
(35)
2.09
(53)
13.07 10.39 10.43 9.80 4.84
(332) (264) (265) (249) (123)
3.11
(79)
11.81 5.63
(300) (143)
1.18
(30)
1.89
(48)
125/180 15.83 11.06 11.73 12.20 6.14
(402) (281) (298) (310) (156)
2.76
(70)
13.78 5.83
(350) (148
0
1.54
(39)
250/355 19.09 12.48 13.58 14.65 7.56
(485) (317) (345) (372) (192)
2.76
(70)
16.22 7.24
(412) (184)
0
1.54
(39)
Dimensions size 500...1000 see page 26
A5
A8
For detailed dimensions and
technical data of the variable pumps
see the technical data sheets for
the AA4VSO RA 92050, A4VSH
RE 92110, AA4VSG RA 92100 or
AA4CSG RA 92105
2)
see safety information
26/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Unit dimensions EO2
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
Dimensions valid for A4VSO, A4VSG and A4CSG
Sizes 500...1000
A 2 to mounting flange surface
P, RKV
3
6
5
2
A4
A3
MP
1
R7/R 4
B
A 5 to mounting flange surface
R3 R2
MA2
MA3
Einschraubloch M33
A1
A6
LR
15° 0 15°
RKV
P
R(L)
R6
MB3
MB2
R5
Components see page 24
Ports
max. tightening torques 2)
P
Control pressure ports
DIN 3852
M27x2; 0.63(16) deep
242 lb-ft (330 Nm)
R KV
Return line control fluid
DIN 3852
M27x2; 0.63(16) deep
242 lb-ft (330 Nm)
M P; MA2; M B2 Gauging ports control pressure DIN 3852
M14x1,5; 0.47(12) deep; plugged
59 lb-ft (80 Nm)
MA3; M B3
Gauging ports control pressure DIN 3852
G 1/4; plugged
51 lb-ft (70 Nm)
R2– R7
Bleed port control chamber
M14x1,5; 0.47(12) deep; plugged
59 lb-ft (80 Nm)
DIN 3852
Unit dimensions
Size
A1
A2
A3
A4
A5
A6
500
21.85
(555)
22.01
(559)
15.43
(392)
10.79
(274)
15.28
(388)
1.97
(50)
750
24.80
(630)
23.27
(591)
16.81
(427)
11.97
(304)
16.54
(420)
1.97
(50)
1000
26.38
(670)
25.87
(657)
17.95
(456)
12.87
(327)
19.13
(486)
1.97
(50)
Dimensions size 40...355 see page 25
For detailed unit dimensions and technical data of the
variable pumps see the technical data sheets for the
A4VSO RA 92050, A4VSG RA 92100 or A4CSG RA
92105
2)
see safety information
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
27/32
Version E without valve
This version is being supplied without the control valve.
Apart from that, this version corresponds to the respective basic execution – technical data, respective schematics and unit
dimensions see basic control version.
HSE
HS4E / EO1E / EO2E
Execution witout servo valve
Execution without proportional valve
The mounting pad for the servo valve corresponds to porting
pattern DIN 24340-A10 .
For pump sizes 40 up to incl. 355 the mounting pad on the
EO1E and EO2E corresponds to DIN 24340-A6 and for the
sizes 500...1000 to DIN 24340-A10 .
Schematic
For the HS4E-control the porting pattern corresponds to
Example size 125...355
DIN 24340-A6 on all sizes.
6
B1 B MB
RKV
SP
P
5
S
1
U S MS R4 R3 R2 K1 K2 T R(L) R5 R6 R7
Components
1
Pump with hydraulic control device
3
Induktiv positional transducer
Type IW9-03-01 (EO1/2E, HSE)
Type AWXF (HS4E)
5
Sandwich plate
6
Flushing plate (only HSE)
U
3
28/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
K – short circuit valve
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
HSK
A solenoid actuated 4/2-way shut-off valve is mounted between the servo valve and the control device.
This short circuit arrangement is used for settings and adjustments in the unpressurized zero position, however without a defined
reset during high pressure operation – it is not an emergency shut-down function.
Short circuit valve (4/2-way shut off valve) Type Z4WEH10E68-4X/6EG24N9ETZ4/B10D3 (see RA 24753)
with plug in connector DIN EN 175301-803-A
cable joint M16x1,5 for cable diameter 4,5...10 mm
Schematic
Unit dimensions
Example: AA4VSO size 125...355
on sizes 40 and 71 ports R2–R7 deleted
Sizes 40...355
A 4 to mounting flange surface
B1 B MB
RKV
R KV
SP
P
S
U
P
A 2 with flushing plate
A 3 without flushing plate
R(L)
a
50
b
B
U S MS M1R5R6R7 K1 K2 T R(L) R4R3R2 M2
Unit dimensions
HS4K / EO1K / EO2K size 40...355 see page 29
EO2K size 500...1000 see page 30
Size
40
71
125
180
250
355
A2
12.52
(318)
13.23
(336)
13.98
(355)
13.98
(355)
15.35
(390)
15.35
(390)
A3
11.93
(303)
12.64
(321)
13.39
(340)
13.39
(340)
14.76
(375)
14.76
(375)
A4
15.87
(403)
16.93
(430)
18.86
(479)
18.86
(479)
21.30
(541)
21.30
(541)
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
K – short circuit valve
29/32
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
HS4K / EO1K / EO2K Sizes 40...355
A solenoid actuated 4/2-way shut off valve is mounted between the proportional valve and the control device.
This short circuit arrangement is used for settings and adjustments in the unpressurized zero position, however without a defined
reset during high pressure operation – this is not an emergency shut-down function.
Unit dimensions
Short circuit valve (4/2-way shut off valve)
Type Z4WE6E68-3X/EG24N9Z4/V (see RA 23193)
HS4K Sizes 40...355
with plug in connector DIN EN 175 301-803-A
cable joint M16x1,5
for cable diameter 4,5...10 mm
A3
to mounting flange surface
Please observe performance limits to RE 23193 .
50
--a
40
A2
--a
40
--
Schematic
P
Example AA4VSO EO2K sizes 125...355
M 1 2 ( x 1 .7 5 )
B
a
b
EO1K sizes 40 and 71
A4
B1 B M B
to mounting flange surface
SP
P
RKV
S
P
U
R(L)
U S MS M1R5R6R7 K1 K2 T R(L) R4R3R2 M2
50
A3
A4
A5
A6
A7
40
11.61
(295)
11.65
(296)
12.76
(324)
11.73
(298)
9.69
(246)
11.61
(295)
71
12.24
(311)
12.72
(323)
13.82
(351)
12.36
(314)
10.43
(265)
12.68
(322)
125
12.99
(330)
15.00
(381)
–
13.03
(331)
11.73
(298)
14.92
(379)
180
12.99
(330)
15.00
(381)
–
13.03
(331)
11.73
(298)
14.92
(379)
250
14.39
17.44
(365,5) (443)
–
14.37
(365)
13.58
(345)
17.44
(443)
355
14.39
17.44
(365,5) (443)
–
14.37
(365)
13.58
(345)
17.44
(443)
EO2K sizes 500...1000 see page 30
A7
to mounting flange surface
50
A2
A5
Size
EO1K sizes 125 und 250
EO2K sizes 40...355
A6
Unit dimensions
P
B
30/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
K – short circuit valve
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
EO2K sizes 500...1000
A solenoid actuated 4/2-way shut off valve is mounted between the proportional valve and the control device.
This short circuit arrangement is used for settings and adjustments in the unpressurized zero position, however without a defined
reset during high pressure operation – this is not an emergency shut-down function.
Schematic
Unit dimensions
Example: A4VSG
50
b
b
P
a
A
MA1
MB3
RKV
MB2
E
A2
MB1
A3
B
a
MA3
MP
P
MA2
S
U
B
A 4 to mounting flange surface
U
R5 R6 R7 K2 K3 T R(L) R4 R3 R2
Short circuit valve (4/2-way shut off valve)
Type Z4WEH10E68-4X/6EG24N9ETZ4/B10D3
(see RA 24753)
with plug in connector DIN EN 175301-803-A
cable joint M16x1,5
for cable diameter 4,5...10 mm
EO2K sizes 40...355 see page 29
Unit dimensions
Size
500
750
1000
A2
15.20(386)
16.42(417)
17.28(439)
A3
15.43(392)
16.81(427)
17.95(456)
A4
23.98(609)
25.24(641)
27.83(707)
RA 92 076/06.05 | HM, HS, HS4 and EO
Bosch Rexroth Corporation
Z – sandwich plate filter
31/32
Before finalizing your design please
request certified installation drawing
Dimensions in inches and millimeters ()
the digit for the filtration option in the model code
This sandwich plate filter is used to filter the control fluid before entering the servo valve in the HS-control.
It is denoted with the letter Z in the pump model code.
Sandwich plate filter
Unit dimensions HS...Z
Contamination indicator is optical and electrical–
indicator lamp voltage 24V
Sizes 40...355
Size
Type
40 and 71
DFBH/HC60Z10D2.0/V-L24
125...355
DFBH/HC110Z10D2.0/V-L24
Schematic
A 2 with flushing plate
A 3 without flushing plate
HS4 with sandwich plate filter on request.
RKV
P
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B1 B MB
�
�
�
�
B
��
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RKV
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A1
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U S �� ��R5R6 R7 K1 K2 T R(L) R4 R3R2 ��
Unit dimensions
Size
A1
A2
A3
A4
40
8.50
(216)
13.46
(342)
12.87
(327)
11.81
(300)
71
8.35
(212)
13.78
(350)
13.19
(335)
12.28
(312)
125/180
10.71
(272)
14.72
(374)
14.13
(359)
14.80
(376)
250/355
10.71
(272)
16.18
(411)
15.59
(396)
17.24
(438)
R(L)
A 4 to mounting flange surface
32/32
Bosch Rexroth Corporation
HM, HS, HS4 and EO | RA 92 076/06.05
Safety information
– The control and regulating devices HM, HS, HS4 and EO were designed for the respective pumps as follows: open circuit
((A)A4VSO), semi closed circuit (A4VSH) or closed circuit ((A)A4VSG, (A)A4CSG).
– Systems design, installation and commissioning require trained technicians or tradesmen.
– All hydraulic ports can only be used for the fastening of hydraulic service lines.
– Tightening torques:
The tightening torques mentioned in this data sheet are maximum values and must not be exceeded (max. values for thread).
Manufacturers information concerning the maximum permitted tightening torques of the various fittings is to be observed!
For DIN 13/ISO 68 mounting bolts, we recommend that tightening torques be checked on a case by case basis in accordance
with VDI 2230, published 2003.
– During and shortly after operation of a pump the housing and especially a solenoid can be extremely hot, avoid being burned!
Bosch Rexroth Corporation
Axial & Radial Piston Units
8 Southchase Court
Fountain Inn, SC 29644-9018
USA
Telephone (864) 967-2777
Facsimile (864) 967-8900
www.boschrexroth-us.com
Bosch Rexroth Corporation
2315 City Line Road
Bethlehem, PA 18017-2131
USA
Telephone (610) 694-8300
Facsimile (610) 694-8467
www.boschrexroth-us.com
© 2005 Bosch Rexroth Corporation
All rights reserved. Neither this document, nor any part of it, may be reproduced,
duplicated, circulated or disseminated, whether by copy, electronic format or
any other means, without the prior consent and authorization of Bosch Rexroth
Corporation.
The data and illustrations in this brochure/data sheet are intended only to describe or depict the products. No representation or warranty, either express or implied, relating to merchantability or fitness for intended use, is given or intended by
virtue of the information contained in this brochure/data sheet. The information
contained in this brochure/data sheet in no way relieves the user of its obligation
to insure the proper use of the products for a specific use or application. All
products contained in this brochure/data sheet are subject to normal wear and
tear from usage.
Subject to change.