AA10VO45DFR/31R-PUC61N00

The AA10VO45DFR/31R-PUC61N00 variable pump is part of the A10VSO Variable Pumps series produced by Bosch Rexroth for hydraulic automation tasks that require adjustable flow and pressure. Its geometric displacement is 45 cm³ per revolution, establishing the base volume moved each shaft rotation. With a nominal pressure rating of 280 bar the pump can maintain working force suitable for medium-pressure circuits, while a maximum pressure limit of 350 bar defines the upper safety boundary. At 1800 rpm the pump delivers 81 L/min, supplying consistent fluid volume for typical industrial drive speeds. When operated at its rated displacement the flow can rise to 117 L/min, providing extra capacity for transient peak demand. A maximum speed of 2600 rpm safeguards rotating elements under full displacement, whereas an elevated limit of 3100 rpm applies when the displacement is reduced to protect the rotating group from excessive stress. Torque demand is 72 Nm at 100 bar, enabling designers to select an appropriate prime mover for moderate load conditions.

A case volume of 1.0 L houses the internal leakage fluid, supporting thermal stability and lubricant retention. The case can tolerate up to 2 bar, so drain plumbing must keep back pressure below this value to avoid seal damage. The standard differential pressure of 14 bar guides setup of the load-sensing control to ensure prompt swashplate response. Inlet conditions are bounded by a minimum absolute pressure of 0.8 bar to prevent cavitation and a maximum inlet pressure of 10 bar to protect the charge circuit. During nominal operation at 280 bar the unit can transmit 55 kW, giving planners a clear power ceiling for drive sizing. Under the same pressure a maximum torque of 200 Nm is required at the shaft, defining coupling and gear selection. Flow deviation is limited to 1.8 L/min, which keeps control accuracy tight during variable dispensing. These limits help the pump sustain reliable service across diverse mobile and industrial hydraulic systems.