PVV4-1X/082RD

The PVV4-1X/082RD pump belongs to the PV Fixed Displacement Pumps series and is manufactured by Bosch Rexroth for hydraulic automation circuits that need a steady delivery of oil. It displaces 81.6 cm³ per revolution, so each shaft turn moves a fixed volume of fluid for repeatable flow calculations. Shaft rotation is clockwise, allowing direct coupling to prime movers that share this direction. A continuous pressure rating of 210 bar defines the maximum working load the housing and bearings can withstand without accelerated wear. When driven at 1500 rpm, the pump passes 120 l/min, giving designers a clear figure for sizing return lines and heat exchangers. The highest permitted speed is 1800 rpm with a 1 bar inlet condition, which prevents cavitation at elevated rotational rates. Either port can serve as the inlet or outlet because the direction of flow is inlet/outlet independent, simplifying circuit layout when space is restricted.

The minimum operating speed is 600 rpm, establishing the lowest drive speed that still primes the pumping elements and maintains lubrication. A standardized SAE-C mounting flange lets the unit bolt directly to common bell housings without adapters. Pipe work connects by SAE flanges secured with UNC screws, so assembly uses readily available hardware. The pressure port sits on the top face at 0° from the inlet, which keeps the discharge line vertical and reduces air pockets. Discharge piping attaches to a SAE 1 1/4 inch port that suits medium-size system lines, while the suction side uses a larger SAE 2 inch port to maintain low inlet velocities and minimize pressure drop.