F3 V20 1S7S 1C11

The F3 V20 1S7S 1C11 vane pump belongs to the Square Vane Pumps series produced by Vickers for fixed-displacement hydraulic circuits in automated machinery. With a rated capacity of 7 USgpm at 1200 rpm and 100 psi, the unit delivers a predictable base flow for modest power needs while maintaining stable line pressure. A controlled flow setting of 11 L/min (3 USgpm) allows designers to match actuator speed when the pump is driven at constant speed. The internal displacement of 22.8 cm³ per revolution defines the volume transferred during each shaft rotation, giving engineers a direct way to calculate system flow from motor speed. Flow is metered through a No. 3 flow-control orifice that moderates pressure spikes during rapid load changes. A ring size of 7 establishes the cam track geometry that positions the vanes for efficient sealing. Maximum operating pressure is limited to 172 bar (2500 psi) so that housing and shaft seals remain within their fatigue limits.

The pump mounts on a 2-bolt flange so machine builders can secure it quickly to a motor adapter or bracket. A 1-5/8-12 straight-thread inlet port provides a high-integrity suction connection, and inlet side conditions must not exceed 0.7 bar (10 psi) positive pressure to prevent bearing overload. Suction lift is also restricted to 5 inHg of vacuum, guarding against cavitation when reservoirs are located below the pump centerline. Discharge is carried through a 3/4-16 straight-thread outlet that matches common hydraulic tubing sizes, and the outlet is positioned in line with the inlet at position C to simplify rigid pipe routing. These port arrangements reduce assembly time and minimize line stress during thermal expansion. Together, the mounting and connection details support fast replacement in automated cells while ensuring the pump receives clean oil and returns it to the circuit without leakage.