Hydraulic Variable Displacement Rexroth A6VM Motor
Open and closed circuits 
Hydraulic Variable motor A6VM55, A6VM80, A6VM107, A6VM140, A6VM160, A6VM200, A6VM250
Series 63, Size Nominal pressure, 28 to 200 (400 bar/450 bar), 250 to 1000 (350 bar/400 bar)

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– Variable A6VM motor with axial tapered piston rotary group of bent axial design, for hydrostatic drives in open and closed circuits
– For use in mobile and stationary applications
– The wide control range enables the variable motor to satisfy the requirement for high speed and high torque.
– The displacement can be infinitely changed from Vg max to Vg min = 0.
– The output speed is dependent on the flow of the pump and the displacement of the motor.
– The output torque increases with the pressure differential between the high-pressure and low-pressure side and with increasing displacement.
– Wide control range with hydrostatic transmissions
– Wide selection of control devices
– Cost savings through elimination of gear shifts and possibility of using smaller pumps
– Compact, robust motor with long service life  
– High power density
– Good starting characteristics
– Small swing torque
    
Technical Data of Brueninghaus Hydromatik Rexroth A6VM Motor 
Table of values (theoretical values, without efficiency and tolerances; values rounded)   

Rexroth A6VM motor				A6VM55	A6VM80	A6VM107	A6VM140	A6VM160	A6VM200	A6VM250
Nominal pressure		p N	bar	400	400	400	400	400	400	350
Maximum pressure		pmax	bar	450	450	450	450	450	450	400
Displacement		Vg max	cm³	54.8	80	107	140	160	200	250
Speed	at V g max	n max	rpm	4450	3900	3550	3250	3100	2900	2700
Speed	at V g<V g max	n max	rpm	7000	6150	5600	5150	4900	4600	3600
Inlet flow	at nmax	q V max	l/min	244	312	380	455	496	580	675
Torque	Δ p = 400 bar	T	Nm	349	509	681	891	1019	1273	1391
Weight (approx.)		m	kg	26	34	47	60	64	80	90

Hydraulic fluid
Before starting project planning, please refer to our data sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable hydraulic fluids), RE 90222 (HFD hydraulic fluids) and RE 90223 (HFA, HFB, HFC hydraulic fluids) for detailed information regarding the choice of hydraulic fluid and application conditions. The variable motor A6VM is not suitable for operation with HFA hydraulic fluid. If HFB, HFC, or HFD or environmentally acceptable hydraulic fluids are used, the limitations regarding technical data or other seals must be observed.
Details regarding the choice of hydraulic fluid
The correct choice of hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature: in a closed circuit, the circuit temperature, in an open circuit, the reservoir temperature. The hydraulic fluid should be chosen so that the operating viscosity in the operating temperature range is within the optimum range. We recommended that the higher viscosity class be selected in each case.
Example: At an ambient temperature of X °C, an operating temperature of 60 °C is set in the circuit. In the optimum viscosity range, this corresponds to the viscosity classes VG 46 or VG 68; to be selected: VG 68.
Note: The case drain temperature, which is affected by pressure and speed, can be higher than the circuit temperature or reservoir temperature. At no point of the component may the temperature be higher than 115 °C. The temperature difference specified is to be taken into account when determining the viscosity in the bearing.
Filtration of the hydraulic fluid
Finer filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit. To ensure the functional reliability of the axial piston unit, a gravimetric analysis of the hydraulic fluid is necessary to determine the amount of solid contaminant and to determine the cleanliness level according to ISO 4406. A cleanliness level of at least 20/18/15 is to be maintained. At very high hydraulic fluid temperatures (90 °C to maximum 115 °C), a cleanliness level of at least 19/17/14 according to ISO 4406 is necessary.
Temperature range
The FKM shaft seal may be used for case drain temperatures from -25 °C to +115 °C. 
Note: For application cases below -25 °C, an NBR shaft seal is required (permissible temperature range: -40 °C to +90 °C). State NBR shaft seal in plain text when ordering.
Shaft seal
The service life of the shaft seal is influenced by the speed of the axial piston unit and the case drain pressure (case pressure). The mean differential pressure of 2 bar between the case and the ambient pressure may not be enduringly exceeded at normal operating temperature. For a higher differential pressure at reduced speed, see diagram. Momentary pressure spikes (t < 0.1 s) of up to 10 bar are permitted. The service life of the shaft seal decreases with an increase in the frequency of pressure spikes. The case pressure must be equal to or higher than the ambient pressure.
HD – Proportional control hydraulic
The proportional hydraulic control provides infinite setting of the displacement, proportional to the pilot pressure applied to port X. – Beginning of control at Vg max (maximum torque, minimum speed at minimum pilot pressure) – End of control at Vg min (minimum torque, maximum permissible speed at maximum pilot pressure)
Note
– Maximum permissible pilot pressure: pSt = 100 bar
– The control oil is internally taken out of the high-pressure side of the motor (A or B). For reliable control, an operating pressure of at least 30 bar is required in A (B). If a control operation is performed at an operating pressure < 30 bar, an auxiliary pressure of at least 30 bar must be applied at port G via an external check valve. For lower pressures,Please note that pressures up to 450 bar can occur at port G.
– Please state the desired beginning of control in plain text when ordering, e. g.: beginning of control at 10 bar.
– The beginning of control and the HD characteristic are influenced by the case pressure. An increase in case pressure causes an increase in the beginning of control and thus a parallel shift of the characteristic.
– A leakage flow of maximum 0.3 L/min can escape at port X due to internal leakage (operating pressure > pilot pressure). The control is to be suitably configured to avoid an independent build-up of pilot pressure.
EP – Proportional control electric
The proportional electric control provides infinite setting of the displacement, proportional to the control current applied to the solenoid (sizes 28 to 200) or proportional valve (sizes 250 to 1000). For sizes 250 to 1000, the pilot oil supply at port P requires an external pressure of pmin = 30 bar (pmax = 100 bar). – Beginning of control at Vg max (maximum torque, minimum speed at minimum control current) – End of control at Vg min (minimum torque, maximum permissible speed at maximum control current)
Note
The control oil is internally taken out of the high-pressure side of the motor (A or B). For reliable control, an operating pressure of at least 30 bar is required in A (B). If a control operation is performed at an operating pressure < 30 bar, an auxiliary pressure of at least 30 bar must be applied at port G via an external check valve. For lower pressures, Please note that pressures up to 450 bar can occur at port G. The following only needs to be noted for sizes 250 to 1000:
– The beginning of control and the EP characteristic are influenced by the case pressure. An increase in case pressure causes an increase in the beginning of control and thus a parallel shift of the characteristic.
HZ – Two-point control hydraulic
The two-point hydraulic control allows the displacement to be set to either Vg min or Vg max by switching the pilot pressure at port X on or off. – Position at Vg max (without pilot pressure, maximum torque, minimum speed)  – Position at Vg min (with pilot pressure > 10 bar activated, minimum torque, maximum permissible speed)
Note
– Maximum permissible pilot pressure: 100 bar
– The control oil is internally taken out of the high-pressure side of the motor (A or B). For reliable control, an operating pressure of at least 30 bar is required in A (B). If a control operation is performed at an operating pressure < 30 bar, an auxiliary pressure of at least 30 bar must be applied at port G via an external check valve. For lower pressures, Please note that pressures up to 450 bar can occur at port G.
– A leakage flow of maximum 0.3 L/min is present at port X (operating pressure > pilot pressure). To avoid a build-up of pilot pressure, pressure is to be relieved from port X to the reservoir.
EZ – Two-point control electric
The two-point electric control with switching solenoid (sizes 28 to 200) or control valve (sizes 250 to 1000) allows the displacement to be set to either Vg min or Vg max by switching the electric current at the switching solenoid or control valve on or off. Note: The control oil is internally taken out of the high-pressure side of the motor (A or B). For reliable control, an operating pressure of at least 30 bar is required in A (B). If a control operation is performed at an operating pressure < 30 bar, an auxiliary pressure of at least 30 bar must be applied at port G via an external check valve.
Note
– Maximum permissible pilot pressure: 100 bar
– The control oil is internally taken out of the high-pressure side of the motor (A or B). For reliable control, an operating pressure of at least 30 bar is required in A (B). If a control operation is performed at an operating pressure < 30 bar, an auxiliary pressure of at least 30 bar must be applied at port G via an external check valve. For lower pressures Please note that pressures up to 450 bar can occur at port G.
– A leakage flow of maximum 0.3 L/min is present at port X (operating pressure > pilot pressure). To avoid a build-up of pilot pressure, pressure is to be relieved from port X to the reservoir.
HA – Automatic control high-pressure related
The automatic high-pressure related control adjusts the displacement automatically depending on the operating pressure.
The displacement of the A6VM motor with HA control is Vg min (maximum speed and minimum torque). The control unit measures internally the operating pressure at A or B (no control line required) and upon reaching the beginning of control, the controller swivels the motor from Vg min to Vg max with increase of pressure. The displacement is modulated between Vg min and Vg max, thereby depending on load conditions. – Beginning of control at Vg min (minimum torque, maximum speed) – End of control at Vg max (maximum torque, minimum speed)
Note:
– For safety reasons, winch drives are not permissible with beginning of control at Vg min (standard for HA).
– The control oil is internally taken out of the high-pressure side of the motor (A or B). For reliable control, an operating pressure of at least 30 bar is required in A (B). If a control operation is performed at an operating pressure < 30 bar, an auxiliary pressure of at least 30 bar must be applied at port G via an external check valve. For lower pressures, please contact us. Please note that pressures up to 450 bar can occur at port G.
– The beginning of control and the HA characteristic are influenced by the case pressure. An increase in case pressure causes an increase in the beginning of control and thus a parallel shift of the characteristic. Only for HA1T (sizes 28 to 200) and HA1, HA2, HA.T, (sizes 250 to 1000).
– A leakage flow of maximum 0.3 L/min is present at port X (operating pressure > pilot pressure). To avoid a build-up of pilot pressure, pressure is to be relieved from port X to the reservoir.

Details model of Rexroth A6VM motor
R902050639 A6VM200DA1/63W-VAB017DB	R902121728 A6VM160HA2/63W-VZB017FA K	R902092142 AA6VM160HA1T/63W-VSD527A E
R902050953 A6VM140DA1/63W-VZB020DB	R902121734 A6VM80EP1/63W-VXB017FXB S	R902092143 A6VM28HD6/63W-VAB020B E
R902052390 A6VM140HD1D/63W-VZB010B	R902121735 A6VM107EPX/63W-VXB017FPB S	R902092147 AA6VM55HA1/63W-VSD520A E
R902054692 A6VM107HD1E/63W-VZB020B	R902121750 A6VM80HA1R2/63W-VXB017CA S	R902092167 AA6VM107HD1/63W-VSD52000B
R902054886 A6VM200EP2/63W-VAB010WB	R902121756 A6VM107HA1R2/63W-VXB0170CA S	R902092169 AA6VM107HD1/63W-VSD52000B
R902060117 AA6VM200HD1/63W-VSD510B	R902121762 A6VM140HA1R2/63W-VXB017CA S	R902092214 AA6VM160HA2X/63W-VSD520A ES
R902060120 A6VM160HZ1/63W-VZB027B	R902121768 AA6VM160HD1/63W-VSD510B E	R902092253 A6VM160HA1TX/63W-VPB020A ES
R902060180 A6VM140HD2D/63W-VZB010B	R902121897 A6VM160HD1D/63W-VZB380B SK	R902092353 AA6VM160HA2T/63W-VSD527DA E
R902060418 A6VM200EP2D/63W-VAB020WB	R902121918 AA6VM160EP1/63W-VSDXXXFPB SK	R902092367 AA6VM107HA1T/63W-VSD517A E
R902060460 A6VM160HA1A/63W-VZB380A S	R902124047 A6VM140HA2R2/63W-VZB017PA	R902092502 AA6VM107HZ3/63W-VSD51700B
R902063606 A6VM160HD1/63W-XPB010B S	R902124083 AA6VM160HA1TX/63W-VSD527A ES	R902092584 AA6VM200HD1D/63W-VSD527B E
R902063758 A6VM140HA1T/63W-VZB380DA	R902124171 AA6VM107HD2/63W-VSD52000B	R902092589 AA6VM160HD1D/63W-VSD527B E
R902063883 A6VM107HA1TA/63W-VAB370A SK	R902124172 AA6VM80HA1/63W-VSC520A E	R902092591 AA6VM160HZ1/63W-VSD510B E
R902065743 A6VM160EP2D/63W-VZB017HB	R902124256 AA6VM160HD1/63W-VSD510B E	R902092630 AA6VM80HD1/63W-VSC520A E
R902065805 A6VM160HD2D/63W-VZB010B	R902124278 AA6VM200HD1/63W-VSD510B E	R902092646 AA6VM160DA1/63W-VSD527B ES
R902065844 A6VM200HD1/63W-VAB027A	R902124371 AA6VM80EP1/63W-VSC520PB E	R902092716 AA6VM160HA1TX/63W-VSD527A ES
R902067535 A6VM200HA2/63W-VAB027DA	R902124388 A6VM160HZ1/63W-VZB027A	R902092729 AA6VM80HA1T/63W-VSC517A E
R902067704 A6VM107HA1T/63W-VZB027A	R902124465 AA6VM80HA1/63W-VSC510A E	R902092750 A6VM140EP2/63W-VZB027FPB ESK
R902067846 A6VM107DA4/63W-VAB027B	R902126534 A6VM140EZ2/63W-VZB380PB SK	R902092777 AA6VM80HA1/63W-VSC52700A
R902068589 AA6VM80HD1/63W-VSC510B	R902126607 A6VM80EP2/63W-VAB027FPA K	R902092785 AA6VM200HA1/63W-VSD527A E
R902072518 A6VM80HD1/63W-VAB020A	R902126734 AA6VM80HA1T/63W-VSC520A E	R902092798 AA6VM107HA1/63W-VSD510A E
R902072575 A6VM160EP2D/63W-VAB020WB	R902126819 A6VM160EP2/63W-VZB027FPB K	R902092801 AA6VM160HA1T/63W-VSD520A E
R902073885 A6VM160HD2D/63W-VZB38800B Y	R902126838 AA6VM107HA1/63W-VSD527A E	R902092809 AA6VM160HD2/63W-VSD520B E
R902073988 A6VM107EP2D/63W-VAB027FHB	R902126886 A6VM160HD2/63W-VAB010B	R902092877 AA6VM107HA1/63W-VSD527A E
R902075014 AA6VM160EP2D/63W-VSD520WB S	R902130532 AA6VM160HD1D/63W-VSD520B E	R902092896 AA6VM160HA1 63L VSD51XA ES
R902075126 A6VM160HD2D/63W-VAB020B	R902130728 AA6VM107HA1/63W-VSD51000A	R902092898 AA6VM80HD2/63W-VSC520B E
R902075273 A6VM200EP2D/63W-VAB010XB S	R902130791 A6VM28HA1/63W-VZB027A E	R902092918 AA6VM80HZ3/63W-VXC51XFB ESK
R902075377 A6VM107HA1/63W-VZB370A SK	R902130931 AA6VM160HD2/63W-VSD527B E	R902094513 A6VM80EP1/63W-VXB027FXB S
R902077265 A6VM200HA2/63W-XPB010A	R902132059 AA6VM160HD1/63W-VSD520B E	R902094595 AA6VM160HD1D/63W-VSD510B
R902078502 A6VM55HD2/63W-VZB027B	R902132119 AA6VM160HA1 63R VSD51XA ES	R902094638 A6VM107HA1T/63W-VAB380A
R902078686 A6VM200DA1/63W-VAB017FB	R902132152 A6VM107EP6/63W-VAB0170PB	R902094709 A6VM160EP1/63W-VZB017FPA
R902078775 A6VM160HA1T/63W-VAB027D0A S	R902132159 AA6VM80HA1T/63W-VSC520A E	R902096931 A6VM160HD1/63W-VPB017B
R902078785 A6VM107HD1/63W-VPB017B	R902132188 A6VM160EP6/63W-VZB017PB	R902099104 A6VM80HA2/63W-VAB027A
R902080884 A6VM140HA1T/63W-VZB027A	R902132239 AA6VM80HA1T/63W-VSC520A E	R902101130 A6VM107HA2R1/63W-VAB027FXA S
R902080993 A6VM107HA1/63W-VZB370A SK	R902134625 AA6VM200HA1/63W-VSD527A E	R902101240 A6VM160HD2D/63W-VAB017B
R902084198 AA6VM55HA2T/63W-VSD520A	R902134645 A6VM200HZ1/63W-VAB027A	R902101242 A6VM160HD2D/63W-VAB017DB
R902086504 A6VM200HA2T/63W-VSB020A S	R902134745 AA6VM107HD1/63W-VSD510B E	R902101380 A6VM160EP2/63W-VZB017FPB
R902086703 A6VM80EP2/63W-XZB027FPA S	R902134749 A6VM80EP1/63W-VZB017PA	R902101409 A6VM200HA1TX/63W-VAB027A ESK
R902086880 A6VM80DA2/63W-VZB027PB	R902134751 A6VM107EP1/63W-VZB017PB	R902101500 AA6VM80EP2D/63W-VSC520WB
R902088590 A6VM140EP2D/63W-VZB027PB	R902134893 AA6VM107EP1/63W-VSD510FPB EK	R902101565 A6VM107EP2/63W-VAB017FPB K
R902088952 A6VM160HD2D/63W-VAB027B	R902134911 AA6VM80HZ3/63W-VXC51XFB ESK	R902101611 A6VM140EZ2/63W-VZB027PB
R902090303 A6VM80EP2/63W-VAB020PB	R902134969 AA6VM107HD1/63W-VSD52000B	R902101614 A6VM140EP2/63W-VZB027PB
R902090312 A6VM107HD1/63W-VAB020A	R902139507 AA6VM140EP1/63W-VXDX1XFPB ESK	R902101615 A6VM107EP2/63W-VAB027PB
R902092047 AA6VM80HD1/63W-VSC527B E	R902139526 AA6VM80HD1/63W-VSC520B ES	R902102670 AA6VM200HD1D/63W-VSD510B
R902092048 AA6VM107HD1/63W-VSD527B E	R902139773 A6VM200HD2/63W-VAB010A	R902102783 A6VM107HA1T/63W-VZB027FA
R902092050 AA6VM55HZ3/63W-VSD520B E	R902139851 AA6VM160EP1/63W-VSDXXXFPB SK	R902102823 AA6VM160EP2DX/63W-VSD517FPB SK
R902092054 AA6VM55HA2/63W-VSD527A E	R902139931 AA6VM55HA1U2/63W-VSD510PA E	R902102969 A6VM160EP2/63W-VAB027FPA
R902092064 AA6VM55HZ1/63W-VSD52000B	R902149045 A6VM200EP2D/63W-VAB017PB	R902107570 A6VM80EP1/63W-VZB020FPA
R902092065 AA6VM55HZ1/63W-VSD520B E	R902151821 AA6VM160HA1/63W-VSD510A E	R902107581 A6VM55EP1/63W-VZB020FPA
R902092070 AA6VM80HD1/63W-VSC52000B	R902151898 AA6VM200HD1D/63W-VSD510FB K	R902107693 A6VM200EP2/63W-VAB027FPB
R902092071 AA6VM80HD1/63W-VSC520B E	R902153606 AA6VM160HA2/63W-VSD517FA K	R902107737 AA6VM140EP1/63W-VSDXXXFPB ESK
R902092083 AA6VM200HA2/63W-VSD520A E	R902153631 A6VM200HZ1/63W-VAB017B	R902110252 AA6VM200EP2/63W-VSD517FPB K
R902092085 AA6VM160HD1/63W-VSD52000B	R902153720 AA6VM55HA1/63W-VSD510A E	R902110254 AA6VM200EP2/63W-VSD517FPB
R902092087 AA6VM80HA1T/63W-VSC520A E	R902153833 AA6VM107HZ3/63W-VSD520B E	R902110275 AA6VM160EP2/63W-VSD51XFPB SK
R902092088 AA6VM80HD1D/63W-VSC52000B	R902155524 A6VM160EP2D/63W-VAB010FPB K	R902110289 AA6VM200EP2/63W-VSD527FPB K
R902092090 AA6VM160HA2T/63W-VSD527A E	R902155736 A6VM200EP2/63W-VAB027HPB	R902110398 A6VM200EP2/63W-VAB017FPB
R902092093 AA6VM160HA2/63W-VSD520A E	R902155790 A6VM200HA2T/63W-VAB020H0A	R902115594 AA6VM80EP2/63W-VSC527FPA K
R902092095 AA6VM160HA1/63W-VSD520A E	R902155794 A6VM200EP2D/63W-VAB020HPB	R902115595 AA6VM80EP2/63W-VSC527FPA
R902092098 AA6VM107HA1/63W-VSD52000A	R902155818 A6VM200EP2D/63W-VAB020FPB K	R902115636 A6VM200HD2D/63W-VAB020FB
R902092100 AA6VM107HA1/63W-VSD52000A	R902155820 A6VM200EP2D/63W-VAB020FPB K	R902115823 A6VM160DA1/63W-VAB027FB
R902092101 AA6VM107HA1/63W-VSD527A E	R902155862 A6VM160HA1U2/63W-VAB027FPA K	R902117568 A6VM140HA2/63W-VZB010A
R902092102 AA6VM107HA1/63W-VSD52700A	R902155885 A6VM200EP2D/63W-VAB0200PB	R902117907 A6VM107HA2R1/63W-VAB027XA
R902092106 AA6VM200HD1/63W-VSD520B E	R902155908 A6VM200HA1U2/63W-VAB027HPA	R902117923 A6VM160EP2D/63W-VZB017FPB
R902092107 AA6VM160HA1/63W-VSD52700A	R902155909 A6VM200HA1U2/63W-VAB0270PA	R902119542 A6VM160EP2/63W-VZB027FPA
R902092108 A6VM80DA1/63W-VZB52000B S	R902155911 A6VM200HA2/63W-VAB02000A	R902119545 A6VM80EP2/63W-VZB027FPB K
R902092115 A6VM107HZ3/63W-VAB02700B	R902155949 A6VM200EP2/63W-VAB027HPB	R902119547 A6VM80EP2/63W-VZB027FPB
R902092116 AA6VM107HD1/63W-VSD51000B	R902155985 A6VM200HD1E/63W-VAB02700B	R902119613 A6VM80EP2/63W-VZB027FPA
R902092117 AA6VM107HD1/63W-VSD51000B	R902156035 AA6VM55HA2U2/63W-VSD510PA E	R902119680 A6VM200EP2/63W-VAB017FPA
R902092126 A6VM28HA1/63W-VAB020A E	R902156152 A6VM80HA1R1/63W-VZB027PA	R902119823 AA6VM107EP1/63W-VXDX2XFPB SK
R902092127 AA6VM80DA1/63W-VSC520B E	R902156286 AA6VM80HD2/63W-VSC520B E	R902119828 AA6VM107EP1/63W-VXDX1XFPB SK
R902092134 AA6VM107HZ3/63W-VSD52000B	R902156354 AA6VM55HD2/63W-VSD510A E	R902119875 A6VM160HD1/63W-VZB017FB
R902092136 AA6VM80HZ3/63W-VSC52000B	R902156386 AA6VM80HD2/63W-VSC520B E	R902119893 AA6VM80HZ3/63W-VSC510B
R902092138 AA6VM80HZ3/63W-VSC52000B	R902158688 AA6VM107HA1X/63W-VSD51000A S	R902119912 AA6VM55EP2D/63W-VSD520WB S
R902092140 AA6VM55HD6/63W-VSD520B E	R902158737 AA6VM80EP1/63W-VSC527PB	R902121502 A6VM140EP2/63W-VZB017FPA
R902092141 AA6VM160HD2/63W-VSD520B E	R902158816 AA6VM160EP2D/63W-VSD520XB S	A6VM250HD2D/63W1-VZB020B