Bosch Rexroth | AA10VO45DFR31R-VSC62N00-SO97
AA10VO45DFR/31R-VSC62N00-SO97
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The AA10VO45DFR/31R-VSC62N00-SO97 variable displacement pump is produced by Bosch Rexroth within the A10VSO Variable Pumps series for hydraulic automation that demands adjustable flow and pressure. Its geometric displacement of 45 cm³ per revolution establishes the volume delivered each shaft turn. When driven at 1800 rpm and at maximum displacement, the pump supplies 81 L/min, matching medium flow circuits. At the same operating point of 280 bar it transmits 38 kW to downstream actuators. The nominal pressure rating of 280 bar defines continuous system limits, and 200 Nm of shaft torque is required at that pressure for proper motor selection. Continuous duty at full displacement is permitted up to 2600 rpm, setting a clear speed ceiling. The DFR control’s differential-pressure preset of 14 bar regulates the swashplate to keep a stable pressure drop across control valves. A dry mass of 21 kg eases installation in compact power units.
The pump can reach 117 L/min at maximum displacement when higher flow is needed, supporting rapid actuator movement. At the nominal speed limit its output power rises to 55 kW, allowing heavier duty cycles. A peak pressure capability of 350 bar offers short-term overload tolerance during load spikes. Suction conditions may range from 0.8 bar absolute to 30 bar absolute, so the unit works with either flooded tanks or boosted feeds. When displacement is reduced the shaft may run up to 3100 rpm, letting the prime mover stay in an efficient band while minimizing internal losses. The housing tolerates 2 bar absolute case drain pressure, protecting seals when return lines carry backpressure. An internal oil volume of 1.0 L must be filled before startup to lubricate bearings and sliding shoes.
Technical Specifications
Dfr Δp Standard Setting
14 bar
Displacement (geometric)
45 cm³/rev
Filling Capacity
1.0 L
Flow At 1800 Rpm (vg Max)
81 L/min
Max Case Drain Pressure (abs)
2 bar
Max Flow (vg Max)
117 L/min
Max Inlet Pressure (abs)
30 bar
Max Speed (reduced Displacement)
3100 rpm
Max Speed At Vg Max
2600 rpm
Min Inlet Pressure (abs)
0.8 bar
Nominal Pressure
280 bar
Output Power At 1800 Rpm (280 Bar)
38 kW
Output Power At Nnom (vg Max)
55 kW
Peak Pressure
350 bar
Torque At 280 Bar (vg Max)
200 Nm
Weight (without Fluid)
21 kg
1620 Old Apex Road
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