PVH74QPCRF1S10C134V1931091

The PVH74QPCRF1S10C134V1931091 pump is produced by Vickers for the PVH and PVE Open-Circuit Piston Pumps series. It supplies pressurized hydraulic fluid to mobile or industrial actuators when integrated into open-circuit systems. A nominal displacement of 73.7 cm³ per revolution moves a fixed volume of oil each cycle, supporting medium flow rates at typical working speeds. The rated speed of 1800 rpm defines maximum shaft rotation for continuous duty while preventing excess wear. Right-hand (clockwise) rotation matches common engine or motor outputs, simplifying drivetrain alignment. The SAE C straight-key shaft specified by J744-32-1 transfers torque without splines, permitting straightforward coupling to electric or diesel prime movers. A single one-way shaft seal prevents external leakage during forward operation and limits air ingress on the suction side.

Control design number 31 defines the internal logic used by the compensator to modulate swashplate angle in response to circuit pressure. Within that arrangement, the compensator is preset to 130 bar so outlet flow is reduced when system pressure reaches this value. A load-sense differential of 19 bar maintains a constant margin between pump outlet pressure and sensed downstream pressure, allowing valves to function without starvation as load changes. The pump withstands a maximum working pressure of 140 bar, offering a 10 bar buffer above the compensator setting for transient spikes. An SAE C four-bolt mounting flange per J744-127-4 secures the housing to standard engine pads, and matching SAE four-bolt main ports simplify connection to high-pressure and suction lines. The internal geometry follows pump design number 10, ensuring component interchangeability with other units built to the same revision.