Browning JS6U Jaw Coupling Spider

The Browning 1303296 JS6U Jaw Coupling Spider is a polyurethane insert designed for Browning JS6 and JS6P straight‑jaw couplings, delivering a replaceable, non‑lubricated option within the JS6/JS6P family. This spider fits Browning’s straight‑jaw hubs and provides the torsional flexibility typical of jaw‑coupling systems while requiring no lubrication, simplifying maintenance in demanding industrial environments. The part features an outside diameter of 3.487 inches and a thickness of 0.875 inches (7/8 inch), enabling precise mating with compatible hubs and ensuring torque transmission at speeds up to 3600 RPM. Operating temperature range is specified from -60°F to 180°F, supporting use in environments with wide temperature swings without degradation of the polyurethane insert. As an official Browning insert for the JS6/JS6P series, 1303296 is intended to be used specifically with non‑lubricated jaw‑coupling configurations, ensuring compatibility with straight jaw designs and consistent performance with Browning drive‑system components. Replacing worn or damaged spider inserts with this JS6U model helps maintain continued compatibility with Browning JS6/JS6P couplings and supports reliable operation of equipment that relies on non‑lubricated polyurethane inserts.