F3 V20 1P8S 1B11

The F3 V20 1P8S 1B11 vane pump is produced by Vickers within the Square Vane Pumps series. It supplies hydraulic power to mobile and industrial automation circuits by converting shaft torque into a steady oil flow. The fixed displacement is 26.5 cm³ per revolution, establishing a predictable volume for each shaft turn. At a nominal shaft speed it delivers a flow of 31 l/min, supporting medium-capacity actuators. The pump withstands system demands up to 172 bar, allowing it to serve machinery that runs at 2500 psi working pressure. Operation remains stable up to 2800 rpm, giving designers flexibility when matching electric or combustion prime movers. A right-hand rotation shaft arrangement aligns with standard clockwise drive layouts found on most power units. The housing is cast iron, providing the rigidity and wear resistance needed for continuous duty. A two-bolt flange mounting pattern lets the unit attach quickly to common pump pads without adapter plates.

Fluid enters through a 1.25 in NPT inlet, which minimizes suction losses when the reservoir is located nearby. Discharge oil exits a .750-16 UNF-2B port positioned 90° counter-clockwise from the inlet to simplify hose routing in compact power packs. The selected port threads align with standard hydraulic adapters, so assembly can proceed without special fittings. An internal ring size 8 cartridge defines the vane geometry and keeps volumetric efficiency consistent over the service life. Viton seals resist high temperature and petroleum-based fluids, maintaining leakage control during extended operation. The pump stands 4.79 in tall and 5.12 in wide, dimensions that help it fit under motor overhangs and inside tight engine bays. Service technicians can lift and position the unit because it weighs 19 lb, avoiding the need for lifting equipment during routine swap-outs. Its small footprint leaves space on the mounting pad for filters and manifold blocks when building integrated power units. Taken together, these physical attributes and port orientations let the pump integrate into new or retrofit hydraulic automation systems without major layout changes.