PSV-SNCF-80GRMC-65-110/115

The PSV-SNCF-80GRMC-65-110/115 pump belongs to the PSV Variable Vane Pumps series and is manufactured by Bosch Rexroth for hydraulic automation where load-dependent flow is required. The internal pumping mechanism is a variable volume vane arrangement that adjusts eccentricity to regulate displacement without wasting energy. A solenoid two-pressure control lets the machine controller switch between two system pressures, and its coil is rated for 110/115 VAC at 50 or 60 Hz so no separate power supply is needed. The pump moves 8 in³ of oil each revolution, and when driven at 1800 rpm it can deliver up to 60 gpm to actuators. Working pressure is limited to 1500 psi, safeguarding the vanes and cam ring against excess radial load. Right-hand clockwise rotation matches standard electric motor drives, while an SAE D two-bolt flange aligns the mounting face with common C-frame adapters. A weight of 175 lb means the housing must be supported during installation to avoid strain on the flange.

Suction quality is controlled by limiting inlet vacuum to 6 in Hg, a value chosen to prevent cavitation when the pump is drawing its maximum rated flow. The case drain port must stay below 10 psi so that internal seals are not forced outward under back pressure. Both inlet and outlet are side ported using 4-bolt flanges, allowing rigid tubing to run parallel to the motor without sharp bends. A 10 µm return-line filter is specified to keep abrasive particles from scoring the vane tips and pressure plates. Viton seals provide chemical compatibility and maintain elasticity at oil temperatures up to the 160 °F limit, reducing the likelihood of external leakage. Because the unit produces variable displacement, maintaining the specified suction and drain conditions across the entire flow range avoids unstable volume control during rapid pressure changes. These fluid, pressure, and porting limits give designers clear boundaries for reservoir sizing, cooler selection, and piping layout, ensuring the pump operates within its intended envelope without premature wear.