PSV-PNSF-20HRD-56

The PSV-PNSF-20HRD-56 pump is part of the PSV Variable Vane Pumps series from Bosch Rexroth and delivers adjustable flow for hydraulic automation circuits. As a variable volume vane pump, it modulates displacement to match actuator demand and reduce wasted energy. A subplate mounted interface positions the unit directly on a standardized manifold to simplify installation and service. The pump supplies 15.2 GPM when driven at 1800 rpm, providing consistent oil delivery for medium power machinery. Its 2000 psi pressure rating allows operation in systems requiring moderate working pressures without overstressing internal components. Right-hand rotation aligns with drive arrangements that turn clockwise when viewed from the shaft end, preventing coupling errors. Viton seals withstand elevated temperatures and aggressive fluids, promoting long service life in industrial environments.

Design series 56 identifies the internal build revision used on this model, ensuring component interchangeability with other series 56 pumps during maintenance. A two-stage compensator limits outlet pressure in two discrete steps so the pump can respond smoothly as load changes and maintain stability at the setpoint. Pressure compensator control automatically trims the swashplate angle once system pressure reaches the desired level, preventing unnecessary flow and lowering heat generation. Because the model is supplied with no volume control, displacement is governed solely by the compensator rather than a separate manual adjustment, simplifying circuit design. These control features, combined with the series architecture, enable dependable pressure regulation in automated hydraulic presses, machine tools, and material handling stations.