Vickers | 25VS21AM-297D22R
25VS21AM 297D22R
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The 25VS21AM 297D22R vane pump is produced by Vickers within the Vane Pumps series for fixed-displacement hydraulic circuits. It supplies oil to actuators and valves where consistent flow is required for machine automation. With a displacement of 67.5 cm³ per revolution (4.12 in³/rev), the pump moves a known volume each shaft turn to simplify flow calculations. A rated flow of 21 US gpm at 1200 r/min and 7 bar supports moderate duty cycles in industrial presses and tooling equipment. When driven up to its maximum speed of 2500 r/min, the delivery rises to 146.2 L/min (38 US gpm), providing higher throughput for rapid motion. The unit tolerates system pressures to 210 bar (3000 psi), so it can power cylinders that require substantial force. Input power peaks at 61.9 kW (83 hp) under these conditions, indicating the motor size needed for full-output operation. Right-hand clockwise rotation matches standard drive arrangements on many hydraulic power packs.
For mechanical integration, the pump uses an SAE J744 (ISO 3019/1) mounting pilot that aligns the housing with common industrial motor flanges. The drive shaft carries 13 teeth cut to a 16/32 DP form; major, form, and minor diameters of 21.8 mm, 19.03 mm, and 18.16 mm respectively establish fit with corresponding splined couplings. Oil enters through a 1.50-inch four-bolt flange inlet that minimizes restriction at high flow, and exits through a 1.00-inch four-bolt flange sized for downstream lines. The outlet is set 90° clockwise from the inlet (code D) to simplify hose routing on side-mounted reservoirs. These connection details allow straightforward installation and consistent alignment with existing hydraulic layouts.
Technical Specifications
Delivery @max Speed
146.2 L/min (38 USgpm)
Displacement
67.5 cm3/rev (4.12 in3/rev)
Inlet Port Connection
1.50 in 4-bolt flange
Input Power @max
61.9 kW (83 hp)
Max Pressure
210 bar (3000 psi)
Max Speed
2500 r/min
Mounting Pilot
SAE J744 (ISO 3019/1)
Outlet Port Connection
1.00 in 4-bolt flange
Outlet Position
90° CW From Inlet (Code D)
Rated Flow @1200 R/min (7 Bar)
21 USgpm
Rotation
Right-Hand (Clockwise)
Spline Form Dia
19.03 mm
Spline Major Dia
21.8 mm
Spline Minor Dia
18.16 mm
Spline Teeth
13 (16/32 DP)
1620 Old Apex Road
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