252QV21A5 1AA22L 294

The 252QV21A5 1AA22L 294 vane pump is manufactured by Vickers for the Vane Pumps series and is installed in hydraulic automation circuits to convert mechanical input into regulated fluid flow. It supports systems up to 210 bar (3000 psi) of operating pressure to accommodate medium-pressure industrial machinery. The pump rotates left in a counter-clockwise direction to match drive shafts configured for CCW torque transmission. At the cover end, the displacement is 18.0 cm³ per revolution, establishing the basic volumetric output for that section. When driven at its cover-end maximum speed of 2700 r/min, the pump can deliver 42.3 L/min to downstream components. Input power at that same top speed reaches 17.9 kW (24 hp), so motor sizing must allow for that demand. During lower speed operation of 1200 r/min at the cover end, the rated flow is 5 US gpm, providing a steady supply for modest actuators. Fluid ports are arranged on SAE four-bolt flanges for both inlet and outlets, simplifying mounting to standard manifolds. The outlet is oriented according to code AA, positioned 135° counter-clockwise from the inlet, which helps align hoses inside compact frames.

The shaft end section provides a larger displacement of 67.5 cm³ per revolution, making it suitable for circuits that need higher volume flow. At the shaft-end maximum speed of 2500 r/min, fluid delivery climbs to 146.2 L/min to drive multiple cylinders simultaneously. Mechanical input required for that condition reaches 61.9 kW (83 hp), so coupling components must withstand this load. When the shaft end turns at 1200 r/min, its rated flow is 21 US gpm, offering balanced performance at standard motor speeds. The pump mass is 20.5 kg (45 lb), allowing installation by one technician with basic lifting aids. By combining the high-volume shaft end with the lower-volume cover end inside a single housing, the unit can supply two separate circuits without external flow dividers. This dual-section layout simplifies hydraulic automation of machine tools, presses, and assembly lines where simultaneous high and low flows are required. The configuration keeps both ends within a common housing, which conserves space in crowded power units. The compact envelope also reduces plumbing runs because both circuits originate from a single shaft.