25VQ12A 1C 20

The 25VQ12A 1C 20 model is produced by Vickers as part of the VQ Thru-Drive Vane Pumps series. It serves as a hydraulic power source that converts shaft torque into fluid flow for automation circuits. Its displacement is 40.2 cm³ per revolution, so each rotor turn moves a fixed fluid volume and keeps actuator speed predictable. When driven at 1200 rpm under a 7 bar inlet condition it supplies 12 US gpm, giving designers a clear basis for sizing downstream valves and cylinders. Shaft rotation is right-hand clockwise to match standard prime mover direction. The unit mounts on a flange with a single shaft seal, which simplifies alignment and limits external leakage, and it uses an SAE four-bolt flange on both inlet and outlet ports for secure pipe connections.

During operation the pump tolerates pressures up to 210 bar (3000 psi), making it suitable for circuits that demand high force without compromising service life. A maximum input power requirement of 41.0 kW allows pairing with motors or engines rated around 55 hp while still delivering full output. The outlet is positioned in line with the inlet to streamline hose routing and reduce installation space. Torque is transferred through a 3/16-inch shaft key that locks the drive to the rotor and resists slip during load changes. The complete assembly weighs 14.5 kg, permitting a single technician to handle installation or replacement without specialized lifting equipment.