Bosch Rexroth | A10VO45DR31R-PPC12N00-SO97
A10VO45DR/31R-PPC12N00-SO97
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The A10VO45DR/31R-PPC12N00-SO97 variable displacement pump is manufactured by Bosch Rexroth for the A10VSO Variable Pumps series and supplies regulated hydraulic flow to automated machinery. It displaces 45 cm³ per revolution, so output volume adjusts linearly with drive speed. At 1800 rpm the pump delivers 81 L/min, and it can supply up to 117 L/min when commanded by the control valve. The shaft may run at a maximum permissible speed of 3100 rpm. Nominal operating pressure is 280 bar, while 350 bar is permitted for short-term peaks. Torque demand reaches 72 Nm at 100 bar and climbs to 200 Nm at 280 bar, information needed for motor sizing. Dry mass is 23.5 kg without a through drive, supporting compact power-unit layouts.
Internal case volume is 1.0 L, providing space for leakage oil buffering and thermal equalization. The housing tolerates a case pressure of 2 bar absolute, and the inlet port requires at least 0.8 bar absolute to avoid cavitation during high-speed operation. When set to maximum displacement the speed limit is 2600 rpm, maintaining inlet conditions within safe margins. The rotating assembly has a moment of inertia of 0.0033 kg·m², enabling rapid acceleration in servo-controlled drives. Pilot port X accepts pressures up to 350 bar to match control logic demands, and the unit withstands pressure change rates as high as 16000 bar/s for quick load transitions. These capabilities suit hydraulic automation systems needing fast response with stable performance.
Technical Specifications
Case Volume
1.0 L
Displacement Per Rev
45 cm³
Flow At 1800 Rpm
81 L/min
Max Case Pressure
2 bar abs
Max Flow
117 L/min
Max Permissible Speed
3100 rpm
Max Pressure
350 bar
Max Speed (vg Max)
2600 rpm
Max Torque @ 280 Bar
200 Nm
Min Inlet Pressure (s)
0.8 bar abs
Moment Of Inertia
0.0033 kg·m²
Nominal Pressure
280 bar
Pilot Port X Max Pressure
350 bar
Rate Of Pressure Change Max
16000 bar/s
Torque @ 100 Bar
72 Nm
Weight (no Through Drive)
23.5 kg
1620 Old Apex Road
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