35VQS35A 297C20L

The 35VQS35A 297C20L vane pump is manufactured by Vickers and is part of the VQ Thru-Drive Vane Pumps series, providing hydraulic power for automated machinery that needs steady flow at variable pressures. A displacement of 112.8 cm³/rev determines the volume transferred each shaft revolution and establishes baseline flow potential. Its rated flow of 35 gpm at 1200 rpm supplies medium-capacity circuits at common motor speeds. The unit sustains a maximum pressure of 210 bar (3000 psi), allowing cylinders or motors to generate substantial force without cavitation or leakage. A maximum operating speed of 2400 rpm supports direct coupling to high-speed prime movers. Counter-clockwise rotation when viewed from the shaft end matches left-hand drive trains in presses or machine tools. The SAE J744 mounting flange standardizes the housing interface for quick interchange with compatible frames, and a weight of 22.7 kg (50 lb) keeps handling requirements within a single-technician lift.

The inlet port uses an SAE four-bolt flange that maintains a rigid, leak-free suction connection under low absolute pressure, while the outlet port repeats the same four-bolt pattern to simplify hose routing and spare-parts stocking. Because the outlet is in line with the inlet, the pump can be plumbed with straight fittings, reducing bends and pressure loss. The shaft employs a side-fit spline so installers can slide the coupling on without heavy pressing tools while still transmitting full torque. A spline major diameter of 31.2 mm (1.229 in) defines the mating bore size for drive hubs. The 12/24 DP pitch and 14 teeth set the tooth geometry that locks rotational motion without backlash. Together these interface details ensure predictable alignment, repeatable assembly, and reliable torque transfer in automated hydraulic systems.