Bosch Rexroth | AA10VO45DFR52L-VUC64N00
AA10VO45DFR/52L-VUC64N00
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The AA10VO45DFR/52L-VUC64N00 pump is part of the A10VSO Variable Pumps series from Bosch Rexroth and supplies adjustable hydraulic power in automated machinery. Its geometric displacement of 45 cm³ per revolution sets the theoretical volume transferred each shaft turn. A DFR pressure-flow control adjusts the swashplate angle to match circuit demand, and the Δp setting of 14 bar defines the compensator differential that triggers this adjustment. When driven at 1800 rpm, the pump delivers 81 L/min, while a higher operating point can raise output to 117 L/min for short peak periods. Flow stability is supported because the DFR system keeps deviation to 1.8 L/min on this size 45 unit. Continuous service is allowed at 280 bar, and momentary peaks up to 350 bar are accepted without compromising integrity.
The housing accommodates a case drain pressure up to 2 bar so dynamic leakage does not overload shaft seals. On the suction side, absolute inlet pressure must stay below 30 bar to prevent cavitation, and fluid is supplied through a 1 1/2-inch SAE J518 port consistent with standard manifold blocks. Discharge leaves the unit through a 1-inch SAE J518 pressure port, facilitating compact line routing. Pilot control oil connects at port X using a 7/16-20 UNF-2B thread that fits common hydraulic fittings. Shaft speeds may reach 3100 rpm when displacement is reduced, but full-stroke operation is limited to 2600 rpm to manage bearing loads. Installation to the prime mover is completed with an SAE J744 101-2 (B) mounting flange, ensuring alignment with compatible engines or gearboxes.
Technical Specifications
Case Drain Pressure (abs Max)
2 bar
Control Type
DFR (Pressure-Flow)
Dfr Δp Standard Setting
14 bar
Flow At 1800 Rpm
81 L/min
Geometric Displacement
45 cm³/rev
Inlet Port Standard
SAE J518 1 1/2 in
Inlet Pressure (abs Max)
30 bar
Max Flow
117 L/min
Max Flow Deviation (dfr, Size 45)
1.8 L/min
Max Permitted Speed (vg < Vg Max)
3100 rpm
Max Speed At Vg Max
2600 rpm
Mounting Flange
SAE J744 101-2 (B)
Nominal Pressure
280 bar
Peak Pressure
350 bar
Pilot Port X Thread
7/16-20 UNF-2B
Pressure Port Standard
SAE J518 1 in
1620 Old Apex Road
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