PSV-6915409-66-110/115

The PSV-6915409-66-110/115 variable vane pump belongs to the PSV Variable Vane Pumps series and is manufactured by Bosch Rexroth for hydraulic automation circuits where flow must change with demand. Its design digit 66 identifies a flange-mounted configuration that fits standard pump pads for straightforward installation. A drive speed range of 750 to 1800 rpm gives the unit compatibility with slow electric motors and faster engine drives. The flange, side-ported four-bolt mounting style positions suction and pressure ports laterally, reducing pipe runs in compact manifolds. A solenoid coil rated for 110/115 VAC at 50/60 Hz actuates the compensator so the pump can be shifted electrically using common factory power.

The pump tolerates case pressure to 10 psi (0.7 bar), protecting internal seals from excessive backflow. It handles fluid temperatures up to 160 °F (71 °C), allowing operation near typical reservoir limits without degradation. A maximum start-up viscosity of 4000 SUS (864 cSt) permits cold starts with high-viscosity oils while avoiding cavitation. Cleanliness is maintained by specifying a 10 µm return-line filter, which traps abrasive particles before they enter the housing and wear the vane set. These limits guide designers in selecting filtration, heating, and return plumbing so the pump delivers stable service life in automated hydraulic machinery.