PVQ20-B2R-SS1S-21-C21-12

The PVQ20-B2R-SS1S-21-C21-12 pump is manufactured by Vickers and belongs to the PVQ Piston Pumps series, where it supplies regulated hydraulic flow for automated machinery. A displacement of 21.1 cc per revolution sets the fluid volume delivered each shaft turn, which defines actuator speed in closed-loop systems. At its rated speed of 1800 rpm, the pump suits medium-duty motion tasks without oversizing the prime mover. It withstands a maximum working pressure of 210 bar so it can power circuits that demand elevated force. When run at that speed, it can transmit up to 14.9 kW, matching many 20 hp electric motors used in factory equipment. Flow is governed by a pressure compensator, keeping line pressure stable as system demand varies. Right-hand clockwise rotation aligns with standard motor output directions in industrial installations. Torque is applied through a straight keyed SAE B shaft 2.31 inches long, providing a secure mechanical interface to couplings and belt drives.

The inlet can accept up to 2 bar of positive pressure to prevent cavitation, while an allowable inlet vacuum of 5 in Hg enables mounting the reservoir above the pump when space is limited. Internal case pressure must stay below 0.35 bar, so the drain line needs a free return to tank to protect the bearing seals. Fluid enters and leaves through 1.625-inch SAE O-ring side ports that support leak-free hose attachments in compact manifolds. Buna-N seal material is selected for compatibility with common petroleum-based hydraulic fluids at the stated operating limits. The housing weighs 14 kg (31 lb), light enough for single-technician installation. An SAE J744 101-2 flange positions the pump accurately against bell housings or gearboxes during assembly. Because no thru-drive is fitted, the unit cannot be piggy-backed with additional pumps, simplifying alignment and minimizing shaft overhang.