Vickers | 25V21A-1C22R
25V21A 1C22R
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The 25V21A 1C22R pump belongs to the V Series Vane Pumps manufactured by Vickers for controlled oil delivery in hydraulic automation circuits. It displaces 67 cm³ of fluid per revolution, establishing the volume moved each shaft rotation. The unit is rated to supply 21 US gpm at 1200 rpm and 100 psi, giving a clear reference point for system sizing. A minimum speed of 600 rpm prevents internal starvation, while the maximum speed of 1800 rpm sets the upper rotational limit for safe operation. Clockwise rotation when viewed from the shaft end aligns with standard drive arrangements, and a moment of inertia of 0.000757 N·m·s² defines its resistance to acceleration. The flange-mount design fixes the body rigidly to a motor or bracket, maintaining alignment under load.
The pump weighs 14.8 kg, a consideration for support structures and handling. It tolerates outlet pressures up to 172 bar, enabling use in medium-pressure hydraulic lines. Inlet pressure may reach 1.4 bar or drop to −0.17 bar, so both positive head and limited vacuum are acceptable on the suction side. Inlet and outlet ports share an inline orientation, simplifying tube routing in compact manifolds. Each port uses an SAE four-bolt flange, and the internal passages terminate in inch-thread ports to match common North American fittings.
Technical Specifications
Approximate Weight
14.8 kg (33 lb)
Geometric Displacement
67 cm³/rev (4.13 in³/rev)
Max Inlet Pressure
1.4 bar (20 psi)
Max Pressure
172 bar (2500 psi)
Max Speed
1800 rpm
Min Inlet Pressure
-0.17 bar (5 inHg)
Min Speed
600 rpm
Moment Of Inertia
0.000757 N·m·s²
Mounting
Flange Mount
Outlet Position
Inline With Inlet
Port Connection
SAE 4-Bolt Flange (In/Out)
Port Thread Type
Inch Thread Ports
Rated Capacity
21 US gpm @ 1200 rpm (100 psi)
Rotation
Clockwise (From Shaft End)
1620 Old Apex Road
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