PVQ4-1X/122R

The PVQ4-1X/122R fixed displacement pump belongs to the PV Fixed Displacement Pumps series and is produced by Bosch Rexroth for hydraulic automation circuits that require consistent volumetric delivery. Its displacement is 121.6 cm³ per revolution, so each shaft turn moves a defined volume for predictable actuator motion. With a maximum flow of 177 l/min at 1500 rpm, it supports medium-size systems such as presses or injection molding machines. A continuous pressure rating of 210 bar enables operation in circuits where steady high pressure is necessary without shortening service life. The pump starts reliably at a minimum speed of 600 rpm, allowing low-speed drives on electric or diesel prime movers. It accepts pressure fluid HLP mineral oil that meets DIN 51524-2, ensuring compatibility with common industrial hydraulic oils. A clockwise rotation direction matches power units that drive right-handed gear trains.

The unit is supplied in build size 4, giving it dimensions compatible with medium power packs while holding the assembled weight to 23 kg for straightforward handling during installation. Hydraulic cleanliness requirements are ISO 4406 20/18/15 or better, so the circuit filtration must limit particulate contamination to that level to protect internal surfaces. A minimum absolute inlet pressure of 0.9 bar prevents cavitation during cold starts or elevated suction line losses. The housing mounts on an SAE-C flange, and the interface meets SAE J744, allowing direct coupling to standardized engine bell housings or electric motor adapters. The suction port is sized for SAE 2 in fittings to keep inlet velocity low and support the required oil column. Discharge is via an SAE 1 1/4 in pressure port, matching common high-pressure tubing for the stated flow capacity.