PSV-PNRF-40HRM-66

The PSV-PNRF-40HRM-66 pump is manufactured by Bosch Rexroth as part of the PSV Variable Vane Pumps series. It serves hydraulic automation systems by supplying modulated flow and maintaining circuit stability. The unit uses a variable volume vane design, allowing displacement to change in response to load conditions. A pressure compensator is integrated so outlet pressure stays near the set point while excess flow is automatically trimmed. At 1750 rpm the pump delivers 30 GPM, which covers medium-duty actuator or motor requirements. The assembly sustains operation up to 2000 psi, providing a margin for machines that cycle between low and high pressure phases. Rotation is specified as right-hand, aligning the drive shaft direction with standard clockwise prime movers.

Installation is simplified by a flange mounted housing that bolts directly to common power unit pads. Fluid entry and discharge use flange connections to support high flow without threaded joint fatigue, and both ports are located at the rear of the body to streamline manifold plumbing. Viton seal material resists mineral oil and elevated temperature, reducing maintenance linked to seal degradation. The pump is supplied without a separate volume control mechanism, so displacement changes are governed solely by the compensator and internal geometry. These features together define a compact supply element that integrates into fixed or mobile hydraulic assemblies requiring stable pressure control and moderate flow delivery.