Lovejoy 68514436056 Flexible Coupling Hub 1 in Bore

Product Description

The LOVEJOY 68514436056 is a flexible coupling hub designed for use in mechanical power transmission systems. It features a maximum bore diameter of 1 inch and a keyway measuring 1/4 inch wide by 1/8 inch deep, allowing secure shaft engagement with standard keyed shafts. The hub has an outer diameter of 2.046 inches and an overall length of 2.38 inches. Constructed from cast iron, it offers the durability and dimensional stability required in industrial and commercial drive train applications. This hub is one half of a two-piece flexible coupling assembly and is installed by licensed mechanical technicians and millwrights in pump, compressor, and motor-to-drive setups.

This flexible coupling hub suits industrial and commercial mechanical systems where shaft misalignment compensation and vibration damping are needed between a driver and driven component. Typical applications include HVAC fan and blower assemblies, pump drives, compressors, and general industrial machinery. The 1/4 inch by 1/8 inch keyway configuration is standard across a wide range of motor and pump shafts up to 1 inch in diameter, making this hub applicable in both new installations and replacement service work. The coupling size code 4J identifies its spider and jaw element compatibility within the Lovejoy jaw coupling family.

Key Features

• Maximum bore diameter of 1 inch with standard 1/4 inch by 1/8 inch keyway
• 2.046 inch outer diameter and 2.38 inch overall length for compact installation footprint
• Cast iron construction provides strength and dimensional stability under load
• Maximum rated speed of 7,600 RPM suits high-speed motor and pump drive applications
• Coupling size code 4J for compatibility with corresponding jaw coupling elements and spider inserts
• Single-hub packaging allows individual replacement without purchasing a full coupling set

Compatibility

This hub carries coupling size code 4J and is designed to mate with corresponding LOVEJOY 4J series jaw coupling hubs, spider elements, and insert materials within the standard jaw flexible coupling system.

Installation Notes

Installation should be performed by a qualified mechanical technician or millwright. Disconnect and lock out all power to the motor or driver before mounting or removing coupling hubs. The hub should be pressed or tapped onto the shaft to the proper engagement depth, with the key seated fully in the keyway before securing any set screws. Verify shaft alignment to within the coupling's rated angular and parallel tolerance before placing the system back in service.