Vickers | 4520V50A8-1AA22R
4520V50A8 1AA22R
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The 4520V50A8 1AA22R pump is manufactured by Vickers in the V Series Vane Pumps series and serves as a fixed-displacement source of hydraulic flow for automated machinery. Clockwise rotation defines how drive couplings and system plumbing must be arranged for correct operation. A flange mount interface simplifies rigid installation on power units or engine bell housings, while an SAE 4-bolt flange inlet accommodates standard suction fittings used in industrial circuits. The outlet side also employs an SAE 4-bolt flange, with the first discharge port positioned opposite the inlet to favor straightforward manifold layouts. A second outlet port sits 135° counterclockwise from the inlet, allowing the dual-section pump to feed an additional circuit without extra adapters. Minimum operating speed is limited to 600 rpm so adequate oil film forms in the vanes, and the assembly weighs 43.0 kg (95 lb), a factor considered when selecting support brackets and hoisting equipment.
Hydraulic output is divided between two sections to run separate actuators at different flow rates. The shaft-end section delivers 162 cm³ per revolution, resulting in a rated capacity of 50 gpm for high-demand functions such as rapid cylinder extension. The cover-end section displaces 27 cm³ per revolution and supplies 8 gpm, which suits auxiliary tasks that require lower flow. Continuous service limits are 172 bar (2500 psi) on the shaft end and 207 bar (3000 psi) on the cover end, so circuit relief valves must be set below these figures to avoid premature wear. Together these parameters let designers assign one compact pump to operate both high-volume and precision branches of a hydraulic system while staying within safe pressure margins.
Technical Specifications
Cover-end Displacement
27 cm3/rev
Cover-end Rated Capacity
8 gpm
Inlet Port Type
SAE 4-Bolt Flange
Max Continuous Pressure (cover)
207 bar (3000 psi)
Max Continuous Pressure (shaft)
172 bar (2500 psi)
Minimum Speed
600 rpm
Mounting
Flange Mount
Outlet 1 Position
Opposite Inlet
Outlet 2 Position
135° CCW From Inlet
Outlet Port Type
SAE 4-Bolt Flange
Rotation
Clockwise
Shaft-end Displacement
162 cm3/rev
Shaft-end Rated Capacity
50 gpm
Weight
43.0 kg (95 lb)
1620 Old Apex Road
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