Vickers | 20V12A-1A22R
20V12A 1A22R
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The 20V12A 1A22R vane pump is part of the V Series Vane Pumps manufactured by Vickers for hydraulic automation circuits, where it supplies steady volume flow to actuators. It delivers a displacement of 40 cm³ per revolution, allowing designers to predict output per shaft turn. At 1200 rpm and 100 psi the unit provides a rated flow of 12 gpm, a value useful for sizing return and pressure lines. Viewed from the shaft end the rotation is clockwise, so drive arrangements must match that direction. The shaft diameter measures 22.23 mm, and the 9.53 mm key width secures the coupling so torque is transmitted without slip. A flange mounting interface simplifies alignment on standard pump pads, while SAE four-bolt flanges on the inlet and outlet ports provide leak-resistant pipe connections. The outlet is positioned opposite the inlet, which streamlines hose routing in compact power units.
In continuous duty the pump withstands 159 bar, giving a pressure ceiling for valves and hoses downstream. Maximum inlet pressure is limited to 1.4 bar to protect shaft seals, whereas a minimum inlet pressure of −0.17 bar indicates the allowable suction level before cavitation risk. The pump runs safely up to 1800 rpm, enabling higher flow when required, and must not drop below 600 rpm so internal lubrication remains effective. Fluid temperature may reach 99 °C (210 °F), which guides the choice of hydraulic oil and seal compounds. During operation at 1200 rpm the sound level is 62 dB(A), aiding compliance with workplace noise targets. A weight of 12.0 kg permits manual handling during installation without lifting equipment. Vickers has produced vane pumps since the mid-20th century, and widespread service networks reduce downtime when this model needs routine seal or bearing replacement. This industry support complements the operating limits listed above and helps integrators keep automated presses, injection machines, and material-handling equipment running.
Technical Specifications
Displacement
40 cm3/rev (2.47 in3/rev)
Key Width
9.53 mm (0.375 in)
Max Continuous Pressure (aw Oil)
159 bar (2300 psi)
Max Fluid Temperature
99°C (210°F)
Max Inlet Pressure
1.4 bar (20 psi)
Max Speed
1800 rpm
Min Inlet Pressure
-0.17 bar (5 inHg)
Minimum Speed
600 rpm
Mounting
Flange
Outlet Position
Opposite Inlet
Port Type
SAE 4-Bolt Flanges (Inlet/Outlet)
Rated Flow (1200 Rpm, 100 Psi)
12 gpm
Rotation (shaft End View)
Clockwise
Shaft Diameter
22.23 mm (0.875 in)
Sound Level (1200 Rpm)
62 dB(A)
Weight
12.0 kg (26 lb)
1620 Old Apex Road
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