AA10VSO100DFR1/31R-PSA12N00 SO32

The AA10VSO100DFR1/31R-PSA12N00 SO32 axial piston pump is manufactured by Bosch Rexroth as part of the A10VSO Variable Pumps series. Designed for closed-loop hydraulic automation circuits, the unit varies displacement to regulate actuator speed while maintaining system pressure. A fixed clockwise rotation matches drive layouts commonly used in mobile machinery, and the displacement is 100 cm³ per revolution so flow can be adjusted proportionally with shaft speed. At 1800 rpm with the swashplate set to maximum volume, the pump delivers 180 l/min, supporting medium-size cylinder groups. The integrated DFR1 control adjusts swashplate angle to keep output stable under varying load. Operation with HLP mineral oil according to DIN 51524-2 ensures compatibility with standard power units. A nominal shaft speed of 2000 rpm suits diesel or electric prime movers, and the case holds 2.2 L of fluid to lubricate rotating groups while reducing temperature rise. The assembly weighs 49.5 kg without a through drive, which simplifies mounting on engine bell housings.

For high demand cycles the pump can reach a maximum flow of 200 l/min at rated speed, giving additional margin for transient loads. When the displacement is reduced the shaft can turn up to 2400 rpm, extending the usable speed range without exceeding internal velocity limits. At the nominal pressure of 280 bar the shaft can transmit up to 93 kW, matching the maximum power specification. The rotating group withstands a peak pressure of 350 bar and develops 445 Nm of torque at that limit, so transmission components must be sized accordingly. During light duty the shaft torque drops to 159 Nm at 100 bar, improving efficiency in partial load conditions. A moment of inertia of 0.0167 kg·m² minimizes start-up load on the prime mover and aids rapid speed changes commanded by the variable control. These parameters give the pump flexibility to supply stable flow and pressure across a broad spectrum of industrial and mobile equipment.