Bosch Rexroth | AA10VO140DFR31L-VSD62N00
AA10VO140DFR/31L-VSD62N00
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The AA10VO140DFR/31L-VSD62N00 axial piston unit belongs to the A10VSO Variable Pumps series and is manufactured by Bosch Rexroth for adjustable-flow hydraulic drives. It displaces 140 cm³ per revolution to modulate circuit volume as system demand changes. Nominal operating pressure is 280 bar, and the housing tolerates peak events up to 350 bar. Internal lubricating capacity is set by a 3.0 L case volume. Pressure flow is routed through a SAE J518 1 1/4 in outlet, while suction enters through a larger SAE J518 2 1/2 in inlet. Suction conditions must stay above 0.8 bar absolute and may be boosted to 30 bar absolute when a charge pump is used. At 280 bar the shaft must deliver 623 Nm of torque, confirming drivetrain sizing requirements.
The pump’s maximum permissible speed is 2100 rpm, but operation at full displacement is limited to 1800 rpm. At that 1800 rpm point it provides up to 252 L/min of flow and draws as much as 118 kW from the prime mover. A rotor moment of inertia of 0.0242 kg·m² affects acceleration response during start-up and rapid speed changes. Case drain pressure may not exceed 2 bar absolute to protect seals and bearings. The assembly weighs 60 kg without fluid, an important consideration for mounting and service handling. These limits define safe integration of the variable pump into mobile or stationary hydraulic automation.
Technical Specifications
Case Volume
3.0 L
Displacement
140 cm³/rev
Inlet Port Size
SAE J518 2 1/2 in
Max Case Drain Pressure (abs)
2 bar
Max Flow At 1800 Rpm
252 L/min
Max Inlet Pressure (abs)
30 bar
Max Permissible Speed
2100 rpm
Max Power At 1800 Rpm
118 kW
Max Speed At Vgmax
1800 rpm
Min Inlet Pressure (abs)
0.8 bar
Moment Of Inertia
0.0242 kg·m²
Nominal Pressure
280 bar
Peak Pressure
350 bar
Pressure Port Size
SAE J518 1 1/4 in
Torque At 280 Bar
623 Nm
Weight (without Fluid)
60 kg
1620 Old Apex Road
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