Bosch Rexroth | AA10VO140DFR31R-VSD62N00
AA10VO140DFR/31R-VSD62N00
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The AA10VO140DFR/31R-VSD62N00 variable pump is part of the A10VSO Variable Pumps series from Bosch Rexroth and supplies hydraulic actuators with adjustable flow in automated machinery. A displacement of 140 cm3 per revolution lets the pump deliver substantial volume per shaft turn, producing 252 L/min at 1800 rpm when set to maximum displacement. Continuous operation is supported at 280 bar, while peak loads can reach 350 bar without exceeding design limits. Rated speed at full displacement is capped at 1800 rpm to control cavitation, and rotation must remain clockwise to match the internal porting. Power is transmitted through an S-profile splined shaft that mates with standard couplings, and the pressure and suction ports sit on the side of the Version 62 housing for compact manifold mounting. FKM seals withstand high-temperature mineral oils and maintain leakage integrity under the stated pressures, while an unfilled weight of 60 kg requires mechanical assistance during installation.
The integrated DFR compensator carries a factory differential setting of 14 bar, causing the swash plate to retract once outlet pressure exceeds this margin so the pump automatically controls system pressure. Case drain pressure must stay below 2 bar absolute to protect the shaft seals, and the inlet side needs at least 0.8 bar absolute to prevent vapor formation during high-speed operation. When displacement is reduced below maximum, allowable speed rises to 2100 rpm, providing additional output flexibility for variable-torque cycles. A housing volume of 3.0 L must be filled during commissioning to immerse internal parts before start-up. The model has no through-drive section, so it cannot pass mechanical power to a secondary unit. Together, these parameters allow the pump to maintain stable flow, quick pressure response, and long service life in automated hydraulic systems.
Technical Specifications
Case Drain Pressure Max
2 bar (abs)
Dfr Δp Standard Setting
14 bar
Direction Of Rotation
Clockwise (R)
Displacement
140 cm3/rev
Drive Shaft Type
S Splined Shaft
Filling Capacity
3.0 L
Flow At 1800 Rpm (vgmax)
252 L/min
Inlet Abs. Pressure Min
0.8 bar
Max Speed At Vg<vgmax
2100 rpm
Max Speed At Vgmax
1800 rpm
Maximum Pressure
350 bar
Nominal Pressure
280 bar
Port Orientation
Side (Version 62)
Sealing Material
FKM (V)
Through Drive
None (N00)
Weight (without Fluid)
60 kg
1620 Old Apex Road
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