Kinsler KIN-TP050071 500 Tough Pump Ii

Kinsler Tough Pump

One Piece Gear Shaft
High alloy steel, case hardend, predision grounded, the proprietary coated. Does not alloy any radial movement of the gear on the shaft, thus maintaining correct clearance between the gear teeth tips and the housing. A two piece gear and shaft introduces more tolerance, which can allow the tips to scrape the gear cavity walls. Can ingest dirt and spit it out that would fail any other pump.

Rock Solid Housing
Evolved through housing deflection vs pressure test. This final design is the strongest in the industry, combined with twelve 10-32 studs to super secure the extra rigid cover. MIL-spec hard coated to +/- .0001" tolerance for consistent flow over a very long life. Good to 400 PSI; higher available.

Steady Flow at EXTREME RPM
The inlet ports come straight into the gears rather than making a 90° turn like most pumps. This combined with special internal design features to feed the fuel to the gears gives EXCELLENT top-end performance up to 7,000 RPM (14,000 engine RPM) without cavitation. Our larger roller bearings are rated at higher load (output pessure) and 2,000 more pump RPM than of thise other pumps.

Pressure Balance Plate System
Our gear side plates are high alloy steel, heat treated very hard, ground to a 6 micro-inch finish, with end-to-end flatness of .0001". These are coated with a harder-than-carbide composite, then lapped to a 2 micro-inch mirror finish. This coating is so smooth that the torque required to drive the pump is significantly reduced. One plate is moveable. It has pump outlet pressure fed under it to kepp it in constant contact with the gear faces, which gives minimum pump output flow drop vs pressure, and compensates for housing expansion due to temperature, and wear. For excellent priming during engine cranking, two coil springs keep the plate in contact with the gear faces.