Vickers | PVQ25-B2R-SE1S-20-C21-12
PVQ25-B2R-SE1S-20-C21-12
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The PVQ25-B2R-SE1S-20-C21-12 axial piston unit belongs to the PVQ Piston Pumps series manufactured by Vickers and supplies controlled hydraulic flow for automation circuits. It displaces 25.2 cm³ per revolution, so when driven at the rated 1800 rpm it provides 45.4 L/min to downstream components. Flow is limited by a C21 pressure compensator that reduces swashplate stroke as discharge approaches the 210 bar maximum system pressure, keeping power usage within the 16 kW input limit. Clockwise rotation is specified as right-hand, and the drive end uses a straight keyed SAE B shaft measuring 2.31 in to transmit torque without slip. Installation aligns to an SAE J744 101-2 flange, allowing direct coupling to standard electric motors and diesel engines.
The pump weighs 14 kg (31 lb), light enough for one-person handling but heavy enough to stay stable on the mounting face. Internal case pressure must not exceed 0.35 bar, while the inlet side can be boosted to 2 bar to prevent cavitation during high-speed duty. Rear SAE O-ring ports simplify rigid plumbing; the pressure outlet is threaded 1.0625-12 UN-2B, and the suction inlet uses a 1.625-12 UN-2B thread to match common hose fittings. A Buna-N shaft seal retains fluid around the drive journal and resists petroleum-based oil. These connection, pressure, and sealing limits define the operating envelope for reliable service in mobile and industrial hydraulic systems.
Technical Specifications
Approximate Weight
14 kg (31 lb)
Case Pressure Max
0.35 bar (5 psig)
Control Type
Pressure Compensator (C21)
Geometric Displacement
25.2 cm³/rev (1.54 in³/rev)
Inlet Pressure Max
2 bar (30 psig)
Input Shaft
Straight Keyed SAE B, 2.31 in
Max Input Power
16 kW (24 hp)
Max System Pressure
210 bar (3000 psi)
Mounting Flange
SAE J744 101-2 (SAE B)
Output Flow @1800 Rpm
45.4 L/min (12.0 gpm)
Ports
SAE O-Ring Rear Ports (SE)
Pressure Port Size
1.0625-12 UN-2B (SAE)
Rated Speed
1800 rpm
Rotation
Right-Hand (CW)
Shaft Seal
Buna-N (Nitrile)
Suction Port Size
1.625-12 UN-2B (SAE)
1620 Old Apex Road
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