The Timken Company QF1890BINSERT Quick Flex Coupling Insert

The Timken QF1890BINSERT QUICK FLEX® coupling insert is a high-torque urethane elastomer insert designed for Timken QUICK FLEX® size 1890 couplings, transmitting torque while absorbing shock, damping vibration, and compensating for minor shaft misalignment in heavy-duty power transmission systems. This blue insert delivers a nominal continuous torque of 38,937 in-lb (4,399 N·m) and has an inner diameter of 7.60 in (193 mm); it is compatible with Timken QUICK FLEX® Size 1890 couplings and is commonly installed between electric motors, gearboxes, pumps, conveyors, and crushers in industries such as mining, aggregate processing, steel mills, manufacturing plants, and water treatment facilities. Common replacements include Timken QF1890INSERT (Red), QF1890HINSERT (White), and QF1890TINSERT (Black).