Bosch Rexroth | AA10VSO45DFR131R-PPA12K01
AA10VSO45DFR1/31R-PPA12K01
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The AA10VSO45DFR1/31R-PPA12K01 variable displacement axial piston pump is part of the A10VSO Variable Pumps series from Bosch Rexroth and is designed to supply controlled hydraulic energy in automated machinery. Its geometric displacement of 45 cm³ per revolution lets the controller vary volume flow to match system demand. The integrated DFR1 control device operates with a differential pressure setting of 200 psi, so displacement decreases as load pressure rises. When driven at 1800 rpm the pump outputs 21.4 gpm, and the nominal operating speed is 2600 rpm. Continuous duty is maintained at a nominal pressure of 4100 psi, while a case volume of 0.264 gal holds return oil for lubrication and cooling. The unit rotates clockwise to interface with standard right-hand prime movers.
For short periods the pump can accelerate to a maximum permissible speed of 3100 rpm, which raises delivery up to 30.9 gpm at rated displacement. Intermittent operation is supported to a maximum pressure of 5100 psi, requiring drive torque levels of 53 lb-ft at 100 bar and 148 lb-ft at 280 bar. The suction port tolerates inlet pressures as high as 145 psi, but the drain port must remain below 30 psi to protect shaft seals. A working port size of 1 in provides sufficient flow area to pass the specified volumes without excessive velocity. These limits together define safe operating boundaries for hydraulic circuits that rely on precise pressure and flow regulation.
Technical Specifications
Case Volume
0.264 gal (1.0 l)
Control Device
DFR1
Dfr1 Δp Standard
200 psi (14 bar)
Drain Port Max Pressure
30 psi (2 bar)
Flow At 1800 Rpm
21.4 gpm (81 l/min)
Geometric Displacement
45 cm3/rev (2.75 in3)
Max Flow At Nnom
30.9 gpm (117 l/min)
Max Permissible Speed
3100 rpm
Maximum Pressure
5100 psi (350 bar)
Nominal Pressure
4100 psi (280 bar)
Nominal Speed
2600 rpm
Rotation Direction
Clockwise
Suction Port Max Pressure
145 psi (10 bar)
Torque At 100 Bar
53 lb-ft (72 Nm)
Torque At 280 Bar
148 lb-ft (200 Nm)
Working Port Size
1 in
1620 Old Apex Road
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