Bosch Rexroth | AA10VO60DFR52R-VSC62K04
AA10VO60DFR/52R-VSC62K04
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The AA10VO60DFR/52R-VSC62K04 variable pump belongs to the A10VSO Variable Pumps series and is manufactured by Bosch Rexroth. In hydraulic automation it delivers adjustable flow to actuators in open-circuit circuits. The unit employs DFR pressure/flow control so outlet pressure and displacement are balanced automatically. A differential setting of 14 bar (200 psi) causes the compensator to hold a constant pressure drop across orifices. Nominal operating pressure is 280 bar (4000 psi) and the pump can withstand peak events up to 350 bar (5100 psi). The suction port accepts absolute pressures from 0.8 bar (12 psi) to 30 bar (435 psi), accommodating both flooded and boosted reservoirs. Flow is directed from port S to port B, simplifying circuit line identification. To limit abrasive wear, hydraulic fluid cleanliness must reach at least ISO 4406 class 20/18/15.
Continuous operation is permitted with fluid temperatures up to 115 °C (239 °F), defining the cooling requirements of the reservoir. Case drain pressure must stay below 2 bar (29 psi) absolute to avoid overloading the shaft seal. A through-drive flange machined to SAE J744 101-2 (B) lets the unit power an additional pump in a tandem stack. The torque path uses a 1 in 15-tooth 16/32 DP spline formed in the through-drive hub. This spline is held to a Class 5 fit tolerance, ensuring precise alignment with the mating shaft. Pilot port X is threaded 7/16-20 UNF-2B, which matches standard hydraulic test plugs. The same port provides a 10 mm (0.39 in) depth to secure fittings without restricting flow. The defined mechanical interfaces enable mounting without custom adapters, reducing installation time.
Technical Specifications
Cleanliness Class Minimum
ISO 4406 20/18/15
Control Type
DFR (Pressure/Flow)
Dfr Differential Pressure Setting
14 bar (200 psi)
Direction Of Flow
S To B
Max Case Drain Pressure (abs)
2 bar (29 psi)
Max Fluid Temperature
115 °C (239 °F)
Maximum Inlet Pressure (abs)
30 bar (435 psi)
Minimum Inlet Pressure (abs)
0.8 bar (12 psi)
Nominal Pressure
280 bar (4000 psi)
Operating Mode
Open Circuit
Peak Pressure
350 bar (5100 psi)
Pilot Port X Depth
10 mm (0.39 in)
Pilot Port X Thread
7/16-20 UNF-2B
Spline Fit Tolerance
Class 5
Through-drive Flange
SAE J744 101-2 (B)
Through-drive Hub Spline
1 in 15T 16/32 DP
1620 Old Apex Road
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