Bosch Rexroth | AA10VO45DFR52R-VSC64N00
AA10VO45DFR/52R-VSC64N00
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The AA10VO45DFR/52R-VSC64N00 pump belongs to the A10VSO Variable Pumps series and is produced by Bosch Rexroth. It is a variable-displacement axial piston unit used to supply pressurized fluid to hydraulic actuators in automated machinery. The fixed displacement of 45 cm³ per revolution defines the volume of oil moved each shaft turn. A permitted maximum speed of 2600 rpm allows the pump to operate on high-speed prime movers common in industrial power units. At a standard 1800 rpm the pump delivers 81 L/min, providing steady flow for medium-sized circuits, while the maximum flow of 117 L/min at the rated speed limit ensures reserve capacity for transient demand. Continuous service is supported by a nominal pressure rating of 280 bar, and short overloads can be carried up to a peak pressure of 350 bar to handle shock loads. A power requirement of 38 kW at 1800 rpm and 280 bar indicates the drive motor size needed for typical duty.
For control and installation details, the pump develops 200 Nm of torque at 280 bar, a figure relevant when selecting shaft couplings. The shaft turns clockwise, so mounting orientation must match engine rotation. The inlet absolute pressure may fall to 0.8 bar without cavitation, yet should not exceed 30 bar to avoid bearing over-loading. Drain fluid is limited to 2 bar absolute pressure, protecting the case seals from excess backpressure. The DFR differential-pressure control is factory set to 14 bar, enabling automatic displacement reduction as system pressure rises to maintain constant power. A moment of inertia of 0.0033 kg·m² defines the acceleration load seen by the prime mover during starts and speed changes. Dry weight is 21 kg, allowing manual handling during maintenance. When the pump runs at its speed limit and nominal pressure, the drive must supply up to 55 kW, identifying the upper boundary for power transmission components.
Technical Specifications
Case Drain Abs Pressure Max
2 bar
Dfr Δp Standard Setting
14 bar
Displacement
45 cm3/rev
Flow At 1800 Rpm
81 L/min
Inlet Abs Pressure Max
30 bar
Inlet Abs Pressure Min
0.8 bar
Max Flow At Nmax
117 L/min
Max Speed At Vg Max
2600 rpm
Moment Of Inertia
0.0033 kgm2
Nominal Pressure
280 bar
Peak Pressure
350 bar
Power At 1800 Rpm (280 Bar)
38 kW
Power At Nmax (280 Bar)
55 kW
Rotation Direction
Clockwise (R)
Torque At 280 Bar
200 Nm
Weight (dry)
21 kg
1620 Old Apex Road
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