Bosch Rexroth | AA10VO28DR52R-VSC64N00
AA10VO28DR/52R-VSC64N00
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The AA10VO28DR/52R-VSC64N00 pump belongs to the A10VSO Variable Pumps series and is built by Bosch Rexroth for closed-loop hydraulic automation where precise flow adjustment is required. Its displacement is 28 cm³ per revolution, allowing predictable volumetric output over the operating speed range. The unit employs DR pressure control so system pressure is regulated without external valves. Clockwise shaft rotation defines the correct mounting orientation relative to the prime mover. Continuous duty is supported at 280 bar nominal pressure, while short pressure peaks up to 350 bar are tolerated during load spikes. When set to maximum displacement the pump can turn at 3000 rpm, and a mass of 33 lb simplifies installation in compact powerpacks. A case drain port threaded 3/4-16 UNF-2B routes leakage oil back to tank to maintain internal cooling and lubrication.
At reduced displacement the speed limit rises to 3600 rpm, letting the pump deliver a maximum flow of 22.2 gpm without cavitation. Under these conditions it can transmit up to 52 HP and generate 91 lb-ft of torque at 280 bar, making it suitable for medium-power actuator circuits. The inlet is a SAE J518 1-1/4 in flange which accepts standard suction hoses, while pressure output leaves through a SAE J518 3/4 in port for straightforward manifold connection. The shaft uses a 7/8 in, 13-tooth, 16/32 DP spline that mates with common hydraulic drive couplings. A filling capacity of 0.18 gal ensures the housing can be charged with enough fluid to prime internal passages before start-up and to damp pressure pulsations during operation.
Technical Specifications
Case Drain Port
3/4-16 UNF-2B
Control Type
DR Pressure Control
Direction Of Rotation
Clockwise
Displacement
28 cm³/rev
Filling Capacity
0.18 gal
Inlet Port Size
SAE J518 1 1/4 in
Max Flow (nmax, Vgmax)
22.2 gpm
Max Power (280 Bar)
52 HP
Max Speed (vg < Vg Max)
3600 rpm
Max Speed (vg Max)
3000 rpm
Max Torque (280 Bar)
91 lb-ft
Nominal Pressure
280 bar
Peak Pressure
350 bar
Pressure Port Size
SAE J518 3/4 in
Shaft Spline
7/8 in 13T 16/32 DP
Weight (without Fluid)
33 lb
1620 Old Apex Road
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