PVV4-1X/122RB15DMC

The PVV4-1X/122RB15DMC pump belongs to the PV Fixed Displacement Pumps series and is produced by Bosch Rexroth. Designed to deliver a constant volume of oil for hydraulic automation, it features a displacement of 121.6 cm³ per revolution so each shaft turn supplies a predictable amount of fluid. When driven at 1500 rpm the pump moves up to 177 l/min, providing adequate flow for medium-size actuators and manifolds. A continuous pressure limit of 175 bar allows the unit to service circuits that run at typical industrial working levels without overstressing housings or bearings. Maximum speed reaches 1800 rpm at a 1 bar inlet, supporting variable-speed electric or diesel prime movers, while a minimum permitted speed of 600 rpm guards against internal leakage. Clockwise rotation matches common right-hand drive transmissions, and operation with HLP hydraulic oil according to DIN 51524-2 maintains suitable viscosity and anti-wear performance. A dedicated SAE 2 in suction port lowers inlet velocity and reduces the risk of cavitation during high flow demand.

SAE J744 flange mounting is used on the PVV4-1X/122RB15DMC, so installers can bolt the housing directly to standardized motor adapters without custom brackets. The specified SAE-C (127-2) mounting flange locates the shaft accurately and passes drive torque to the gear set. Pressure is taken from a port on the top of the body at 0° from the inlet, simplifying tube runs and allowing air to rise clear of the circuit. The pressure outlet size is SAE 1 1/4 in, providing sufficient cross-section to limit velocity losses at service flow rates. NBR seals are fitted to contain mineral oil under working conditions and to withstand normal temperature ranges. The pump is supplied without a through drive, meaning additional pumps cannot be piggy-backed on the rear shaft. A mass of 23 kg should be considered when selecting support hardware and when planning manual handling during installation or maintenance.