Bosch Rexroth | AA10VO28DR52R-VRC64N00
AA10VO28DR/52R-VRC64N00
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The AA10VO28DR/52R-VRC64N00 pump belongs to the A10VSO Variable Pumps series from Bosch Rexroth and supplies adjustable flow for hydraulic automation loops. A displacement of 28 cm³ per revolution sets the theoretical volume moved each shaft turn. When the shaft runs at the rated speed of 3000 rpm and full displacement, the unit delivers 84 L/min of oil, while the design still permits a maximum speed of 3600 rpm at reduced volume to prevent cavitation. Continuous operation is allowed up to 280 bar; brief transients may rise to 350 bar without harming the rotating group. Suction requirements call for at least 0.8 bar absolute at port S, yet the inlet can accept as much as 30 bar when a pressurized feed is present. The internal case cavity holds 0.7 L of fluid for bearing lubrication and heat removal.
The shaft end tolerates up to 1000 N of axial thrust and 1200 N of radial load, and an overhang moment of 880 Nm accommodates pulleys or gear wheels mounted outside the bearing span. A low rotating inertia of 0.0017 kg·m² enables quick speed changes and reduces motor startup demand. At 280 bar and full volume the torque draw reaches 125 Nm, translating to 39 kW of mechanical power when the shaft turns at 3000 rpm. Case drain pressure must stay below 2 bar absolute so seals remain intact and leakage flow is not impeded. These mechanical and hydraulic limits ensure reliable service when the pump is installed in variable-speed, load-responsive circuits.
Technical Specifications
Axial Force Max
1000 N
Case Volume
0.7 L
Displacement
28 cm3/rev
Flow At 3000 Rpm (vg Max)
84 L/min
Max Case Drain Abs Pressure
2 bar
Max Inlet Abs Pressure (port S)
30 bar
Max Permissible Speed
3600 rpm
Max Speed At Vg Max
3000 rpm
Min Inlet Abs Pressure (port S)
0.8 bar
Moment Of Inertia
0.0017 kg m2
Nominal Pressure
280 bar
Peak Pressure
350 bar
Permissible Overhang Moment
880 Nm
Power At 3000 Rpm (280 Bar)
39 kW
Radial Force Max
1200 N
Torque At 280 Bar (vg Max)
125 Nm
1620 Old Apex Road
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