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The V10 1S7S1 1C20 vane pump belongs to the Square Vane Pumps series and is produced by Vickers for fixed-displacement hydraulic automation. Design number 20 identifies the internal arrangement adopted for this model. A displacement of 22.8 cm³ per revolution (1.39 in³/rev) defines the volume moved each shaft turn, while an SAE rated capacity of 7 US gpm states the expected flow at reference speed. Right-hand clockwise rotation aligns the pump with engines or motors that turn in the same direction. A maximum operating speed of 2800 rpm permits direct coupling to many prime movers, and a pressure limit of 138 bar (2000 psi) allows the pump to drive medium-pressure actuators without supplementary boosting.
The housing mounts by a 2-bolt flange so installation is straightforward on standard pads, and the SAE A mounting flange format maintains interchangeability across similar equipment. A mounting pilot diameter of 3.250 in centers the unit accurately to reduce coupling stress. Fluid enters through a 1-5/16-12 UN-2B inlet port, and an allowable inlet vacuum of 5 in Hg guards against cavitation when the reservoir is below pump level. Discharge exits a 3/4-16 UN-2B outlet located in line with the inlet at the C position, which simplifies manifold plumbing. A shaft major diameter of 0.750 in matches common drive couplings and supports reliable torque transfer in compact installations.
Design Number
20
Displacement
22.8 cm3/r (1.39 in3/rev)
Inlet Port Thread
1-5/16-12 UN-2B
Max Inlet Vacuum
5 inHg
Max Operating Pressure
138 bar (2000 psi)
Max Operating Speed
2800 rpm
Mounting
2-Bolt Flange
Mounting Flange
SAE A
Mounting Pilot Diameter
3.250 in
Outlet Port Position
C (In Line With Inlet)
Outlet Port Thread
3/4-16 UN-2B
Rotation
Right-Hand (Clockwise)
Sae Rated Capacity
7 USgpm
Shaft Major Diameter
0.750 in
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