Vickers | 25V21A-1D22R
25V21A 1D22R
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The 25V21A 1D22R pump belongs to the V Series Vane Pumps produced by Vickers for hydraulic automation. Its internal pumping element uses a vane configuration that supplies a fixed displacement of 67 cm³ per revolution, or 4.13 in³ per revolution, to maintain consistent flow. When driven at 1200 rpm against 100 psi, the unit delivers a rated capacity of 21 US gpm, matching typical power-pack demands. Operating speed can be reduced to 600 rpm without loss of volumetric accuracy, allowing low-noise slow-running circuits. The upper speed limit is 1800 rpm when anti-wear oil is used, which prevents vane tip abrasion at high surface velocities. Drive trains must turn the shaft clockwise when viewed from the shaft end to align with the pump’s engineered rotation.
A flange-mount housing lets the 25V21A 1D22R bolt directly to motor adapters, simplifying alignment. The inlet port uses an FL-12 flange size to accommodate large suction lines that reduce cavitation risk. Discharge fluid exits through an FL-8 outlet flange, sized to sustain rated flow while limiting velocity. The outlet is positioned 90° clockwise from the inlet when viewed from the cover end, easing pipe runs in right-hand layouts. Both ports employ inch threads, allowing use of standard North American fittings during installation. The pump withstands a continuous pressure of 172 bar, or 2500 psi, so circuit relief valves can be set for demanding work cycles. Up to 250 Nm of input torque can be applied to shaft 1, ensuring the pump reaches full load pressure without overloading the drive coupling.
Technical Specifications
Geometric Displacement
67 cm3/rev
Geometric Displacement (in3/rev)
4.13 in3/rev
Inlet Flange Size
FL-12
Max Continuous Pressure
172 bar (2500 psi)
Max Input Torque (shaft 1)
250 Nm
Maximum Speed (anti-wear Oil)
1800 rpm
Minimum Speed
600 rpm
Mounting
Flange Mount
Outlet Flange Size
FL-8
Outlet Position From Inlet
90° CW (From Cover End)
Port Thread Type
Inch Thread
Pump Type
Vane Pump
Rated Capacity @1200 Rpm (100 Psi)
21 US gpm
Rotation (from Shaft End)
Clockwise
1620 Old Apex Road
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