Bosch Rexroth | AA10VSO140DR31R-PKD62K38
AA10VSO140DR/31R-PKD62K38
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The AA10VSO140DR/31R-PKD62K38 variable displacement pump is part of the A10VSO Variable Pumps series from Bosch Rexroth and supplies regulated hydraulic flow for automated machinery. Its displacement is 140 cm³ per revolution, equal to 8.54 in³ per revolution, so a large volume is transferred each shaft turn. At 1800 rpm with maximum displacement the unit delivers 66.6 gpm (252 L/min) to downstream components. Continuous duty is supported at 4000 psi (280 bar) and occasional peaks may reach 5100 psi (350 bar). Drive sizing can reference the required torque of 164 lb-ft (223 Nm) at 100 bar and 453 lb-ft (623 Nm) at 280 bar. Fluid enters through a 2 1/2 in SAE J518 suction port and exits the pressure side through a 1 1/4 in SAE J518 port. Pilot oil consumption for the DR compensator is 0.8 gpm (3 L/min), maintaining control stability without excessive heat generation.
An SAE J744 152-4 (D) mounting flange positions the pump accurately on standard prime movers. When the displacement is reduced, the allowable speed rises to 2100 rpm, whereas operation at full displacement is limited to 1800 rpm to protect bearings and maintain inlet conditions. Output power can reach 158 HP (118 kW) at 4000 psi and 1800 rpm, defining the maximum mechanical load on the drive. The DR control shows 45 psi (3 bar) hysteresis, giving a narrow pressure band that prevents hunting while ensuring prompt response. Case drain oil returns via a 1 1/16-12 UN-2B threaded port, keeping housing pressure low. Together these parameters let the pump match system demand through variable displacement while holding efficiency and reliability in high-pressure hydraulic automation.
Technical Specifications
Displacement
140 cm³/rev
Displacement (in³/rev)
8.54 in³/rev
Dr Hysteresis
45 psi (3 bar)
Drain Port Thread
1 1/16-12 UN-2B
Flow At 1800 Rpm (vg Max)
66.6 gpm (252 L/min)
Max Power At 4000 Psi (1800 Rpm)
158 HP (118 kW)
Max Speed (at Vg < Vg Max)
2100 rpm
Max Speed (at Vg Max)
1800 rpm
Maximum Pressure
5100 psi (350 bar)
Mounting Flange
SAE J744 152-4 (D)
Nominal Pressure
4000 psi (280 bar)
Pilot Oil Consumption (dr)
0.8 gpm (3 L/min)
Pressure Port Size
1 1/4 in (SAE J518)
Suction Port Size
2 1/2 in (SAE J518)
Torque At 100 Bar (vg Max)
164 lb-ft (223 Nm)
Torque At 280 Bar (vg Max)
453 lb-ft (623 Nm)
1620 Old Apex Road
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