Bosch Rexroth | AA10VSO140DFR131R-VKD62K01
AA10VSO140DFR1/31R-VKD62K01
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The AA10VSO140DFR1/31R-VKD62K01 pump is built by Bosch Rexroth in the A10VSO Variable Pumps series for hydraulic automation that requires variable flow and pressure control. Its geometric displacement is 140 cm³ per revolution, providing a fixed volume reference for each shaft turn. Rotation is clockwise, allowing straightforward coupling to right-hand prime movers, and flow is directed from port S to port B to simplify external line routing. The pump operates at a nominal working pressure of 4000 psi to meet typical hydrostatic circuit demands, while the DFR1 control regulates a 200 psi differential to keep actuator speed stable under varying loads. At full displacement the shaft may run up to 1800 rpm, and trimming displacement permits a higher 2100 rpm ceiling for improved power density. When driven at 1800 rpm it delivers 66.6 gpm, matching the requirements of medium-size mobile and industrial machines.
Additional operating limits support reliability during transient events. Peak pressure tolerance rises to 5100 psi so the housing can absorb short-term shocks without damage. Shaft torque reaches 453 lb-ft at 280 bar, aligning with common diesel or electric drives. A minimum inlet absolute pressure of 12 psi is needed to prevent cavitation, and case drain pressure must stay below 29 psi absolute to protect shaft seals. Mechanical power draw is 158 horsepower at 1800 rpm, a figure used for prime mover sizing. The mounting flange follows the SAE J744 pattern for direct fitment to standard bell housings, while working ports use the SAE J518 flange to match common hose assemblies. The unit weighs 132 lb without a through drive, which influences bracket and support design during installation.
Technical Specifications
Dfr1 Differential Pressure
200 psi (14 bar)
Direction Of Flow
S To B
Geometric Displacement
140 cm³/rev (8.54 in³)
Max Case Drain Pressure (abs)
29 psi (2 bar)
Max Flow At 1800 Rpm
66.6 gpm (252 L/min)
Max Speed At Reduced Displacement
2100 rpm
Max Speed At Vg Max
1800 rpm
Max Torque At 280 Bar
453 lb-ft (623 Nm)
Min Inlet Absolute Pressure
12 psi (0.8 bar)
Mounting Flange Standard
SAE J744
Nominal Pressure
4000 psi (280 bar)
Peak Pressure
5100 psi (350 bar)
Power At 1800 Rpm
158 HP (118 kW)
Rotation Direction
Clockwise (R)
Weight Without Through Drive
132 lb (60 kg)
Working Port Flange Standard
SAE J518
1620 Old Apex Road
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