Bosch Rexroth | AA10VO45DR52R-VSC64N00
AA10VO45DR/52R-VSC64N00
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The AA10VO45DR/52R-VSC64N00 variable pump belongs to the A10VSO Variable Pumps series from Bosch Rexroth and serves closed-circuit hydraulic drives that require adjustable flow. Its displacement of 45 cm³ per revolution defines the volume of oil moved with each shaft turn, allowing precise modulation of actuator speed. A maximum operating speed of 2600 rpm sets the upper mechanical limit for continuous duty. When the pump runs at 1800 rpm with the swashplate at full angle, it delivers 81 L/min, while the same swashplate position at 2600 rpm raises flow to 117 L/min; these figures guide sizing of downstream valves and coolers. The rotating group has a moment of inertia of 0.0033 kg·m², which influences the acceleration torque demanded from the prime mover. An inlet absolute pressure window from 0.8 bar to 30 bar prevents cavitation at low values and protects seals at high values. A case volume of 1.0 L holds internal leakage oil for bearing lubrication and heat dissipation.
The hydraulic circuit can be designed around a nominal pressure of 280 bar for continuous work, while a peak pressure rating of 350 bar allows brief overload events without damage. At 1800 rpm and 280 bar the pump requires 38 kW from the drive motor, and this demand increases to 55 kW when the speed rises to 2600 rpm under the same pressure, data that helps in motor and starter selection. Output torque reaches 72 Nm at 100 bar and 200 Nm at 280 bar, figures used to verify coupling strength and shaft alignment. The case drain line must limit absolute pressure to 2 bar so that internal leakage can exit without loading shaft seals. Control hysteresis of 3 bar indicates the pressure span within which the displacement control stabilizes, affecting system responsiveness and energy efficiency.
Technical Specifications
Case Drain Absolute Pressure Max
2 bar
Case Volume
1.0 L
Control Hysteresis (dr)
3 bar
Displacement
45 cm³/rev
Flow At 1800 Rpm (vg Max)
81 L/min
Flow At 2600 Rpm (vg Max)
117 L/min
Inlet Absolute Pressure Max
30 bar
Inlet Absolute Pressure Min
0.8 bar
Max Speed (at Vg Max)
2600 rpm
Moment Of Inertia
0.0033 kg·m²
Nominal Pressure
280 bar
Peak Pressure
350 bar
Power At 280 Bar, 1800 Rpm
38 kW
Power At 280 Bar, 2600 Rpm
55 kW
Torque At 100 Bar
72 Nm
Torque At 280 Bar
200 Nm
1620 Old Apex Road
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