Timken QF50X1-1/4 Flexible Shaft Coupling Hub

Description:

The Timken QF50X1-1/4 QUICK FLEX® coupling hub is used in flexible shaft coupling systems to transmit torque while accommodating vibration, shock loads, and minor shaft misalignment in industrial power transmission applications. Commonly installed on electric motors, gearboxes, pumps, compressors, conveyors, fans, and other rotating equipment utilizing Timken QUICK FLEX® couplings. Maintenance teams, OEMs, and system integrators use this coupling hub for replacement, repair, retrofit, and equipment overhaul to restore reliable torque transmission and minimize equipment downtime.

Applications:

The Timken QF50X1-1/4 is a QUICK FLEX® standard coupling hub with a finished 1-1/4 in bore and keyway for secure shaft mounting in elastomeric coupling assemblies. It is widely used in manufacturing plants, mining operations, water treatment facilities, HVAC systems, material handling equipment, and industrial processing applications where dependable power transmission, vibration damping, and simplified maintenance are required.

Technical Specifications:

• Manufacturer: Timken
• Manufacturer Part Number (MPN): QF50X1-1/4
• Product Type: QUICK FLEX® coupling hub
• Series: QUICK FLEX®
• Coupling Size: 50
• Hub Style: Standard hub with finished bore and keyway
• Bore Size: 1-1/4 in
• Keyway Size: 1/4 × 1/8 in
• Length Through Bore: 2.16 in (54.9 mm)
• Material: Steel
• Mounting Style: Keyed bore
• Compatible Components: Timken QUICK FLEX® insert and cover
• Function: Torque transmission with vibration damping and shaft misalignment compensation
• Application: Industrial power transmission systems

Common Replacements:

• Timken QF50X1-1/4E
• Timken QF50X1-1/4U
• Timken QF50S303X1-1/4