Lovejoy 68514441321 Flexible Coupling Hub 14mm Bore

Product Description

The LOVEJOY 68514441321 is a flexible coupling hub designed for use in power transmission assemblies where vibration damping and minor shaft misalignment tolerance are required. This hub accepts a maximum bore of 14mm and includes a 5mm wide by 2.3mm deep keyway for positive shaft engagement. The outer diameter measures 1-3/4 inches with an overall length of 2.12 inches. Constructed from sintered iron, the hub offers good wear resistance and dimensional stability in industrial drive applications. A licensed mechanic or industrial technician typically installs this component as part of a complete jaw-style flexible coupling assembly.

This coupling hub is suited for use in light to medium-duty industrial and mechanical drive systems including pumps, compressors, conveyors, and HVAC equipment drives. It is rated for shaft speeds up to 10,000 RPM, making it appropriate for motor-to-load connections where rotational speed and torque transfer are central requirements. Two hubs and one spider insert are required to complete a functional coupling assembly. The L075 coupling size code identifies compatible mating hubs and spider elements within the same series.

Key Features

• 14mm maximum bore with 5mm x 2.3mm keyway for secure shaft keying
• 1-3/4 inch outer diameter and 2.12 inch overall length for compact installation
• Rated to 10,000 RPM for high-speed drive applications
• Sintered iron construction provides durable wear resistance
• L075 coupling size code for straightforward series matching
• Sold individually — two hubs plus one spider required for a complete coupling

Compatibility

This hub carries the L075 coupling size code. Two hubs and one spider insert of the same size code are required to complete the coupling assembly. Verify bore, keyway, and size code against mating components before ordering.

Installation Notes

Installation is typically performed by a qualified mechanical or industrial technician. Disconnect and lock out all power to the drive system before beginning shaft work in accordance with OSHA lockout/tagout procedures. Ensure the shaft diameter does not exceed the 14mm maximum bore and that the keyway dimensions match the shaft key before pressing or sliding the hub into position. Do not force a mismatched hub onto a shaft, as this can damage the bore or keyway.