25VQH17A-11C30 L

The 25VQH17A-11C30 L pump belongs to the VQ Thru-Drive Vane Pumps series and is produced by Vickers. It serves as a hydraulic power source in automation circuits where a thru-drive unit supplies flow to downstream sections. Design code 30 identifies the specific internal configuration used for parts compatibility within the series. The pump displaces 55.2 cm³ per revolution, so every shaft turn moves a fixed volume for repeatable flow control. A maximum speed of 2500 rpm allows the unit to meet demanding cycle rates without mechanical overstress. Its high-pressure classification and 210 bar operating limit enable the pump to support actuators that require elevated system pressure. When driven at 1200 rpm it delivers a rated flow of 17 US gpm, providing predictable oil volume for moderate power circuits. At peak speed and pressure the input power requirement is 51.8 kW, data that aids motor sizing. Left-hand (counter-clockwise) rotation matches installations where shaft direction is predetermined by the prime mover, and an overall weight of 14.5 kg permits single-person handling during maintenance.

Inlet and outlet connections are both SAE four-bolt flanges, simplifying hose selection and ensuring identical bolt patterns on the suction and discharge sides. The outlets are positioned in line with the inlet at location C, a layout that streamlines manifold design and reduces hose bends. Suction conditions permit up to 5 in Hg vacuum, so the reservoir elevation and line losses must keep absolute pressure above this threshold to avoid cavitation. The pump also tolerates a positive inlet pressure of 1.4 bar (20 psi), which is helpful when a booster charge system is present. Mounting is via a flange with a single shaft seal, providing straightforward alignment while restricting external leakage at the drive end. These interface details allow the pump to integrate cleanly into hydraulic automation skids that depend on stable inlet supply and reliable high-pressure output.