The Timken Company QF1890BINSERT Quick Flex Coupling Insert

Description:

The Timken QF1890BINSERT QUICK FLEX® coupling insert is used in flexible shaft coupling systems to transmit torque while absorbing shock, vibration, and minor shaft misalignment in heavy-duty industrial power transmission applications. Commonly installed between electric motors, gearboxes, pumps, compressors, conveyors, crushers, and other rotating equipment utilizing Timken QUICK FLEX® couplings. Maintenance teams, OEMs, and system integrators use this coupling insert for replacement, repair, retrofit, and equipment overhaul to restore reliable torque transmission and minimize equipment downtime.

Applications:

The Timken QF1890BINSERT is a high-torque blue urethane elastomer insert designed for QUICK FLEX® size 1890 couplings, providing excellent vibration damping and accommodating shaft misalignment without requiring hub removal during replacement. It is widely used in mining, aggregate processing, steel mills, manufacturing plants, water treatment facilities, and material handling systems where dependable power transmission, simplified maintenance, and extended coupling life are essential.

Technical Specifications:

• Manufacturer: Timken
• Manufacturer Part Number (MPN): QF1890BINSERT
• Product Type: Elastomer coupling insert
• Series: QUICK FLEX®
• Coupling Size: 1890
• Insert Type: High-torque elastomer insert
• Material: Urethane
• Insert Color: Blue
• Nominal Continuous Torque: 38,937 in-lb (4,399 N·m)
• Inner Diameter (L): 7.60 in (193 mm)
• Function: Shock absorption, vibration damping, and shaft misalignment compensation
• Compatible Couplings: Timken QUICK FLEX® Size 1890
• Application: Heavy-duty industrial power transmission

Common Replacements:

• Timken QF1890INSERT (Red)
• Timken QF1890HINSERT (White)
• Timken QF1890TINSERT (Black)