Lovejoy 68514436118 Flexible Coupling Hub 7/8 in Bore

Product Description

The LOVEJOY 68514436118 is a flexible coupling hub designed for shaft-to-shaft power transmission in mechanical drive systems. Built from cast iron, this hub accepts a maximum bore diameter of 7/8 inches and features a 3/16 inches wide by 3/32 inches deep keyway for positive rotational engagement. With an overall outside diameter of 4-5/8 inches and an overall length of 3.94 inches, it is sized for mid-range industrial and commercial drive applications. It is rated to a maximum of 5,850 RPM, making it suitable for motor and pump coupling assemblies where moderate-to-high shaft speeds are present. Installation is handled by mechanical and industrial maintenance technicians.

This flexible coupling hub is used in commercial and industrial settings where vibration dampening and minor shaft misalignment compensation are required. Typical applications include pump drives, compressor drives, and fan assemblies. The cast iron construction provides durability under load in environments where abrasion resistance and dimensional stability are priorities. This hub is the coupling size code 7S component and must be paired with a compatible mating hub and flexible insert element to form a complete coupling assembly.

Key Features

• Maximum bore diameter of 7/8 inches for positive shaft fit
• Keyway dimensions of 3/16 inches wide by 3/32 inches deep for secure keyed shaft engagement
• Outside diameter of 4-5/8 inches with an overall length of 3.94 inches
• Cast iron construction for durability and dimensional stability under load
• Rated to 5,850 RPM maximum for moderate-to-high speed drive applications
• Coupling size code 7S for cross-reference and mating component selection

Compatibility

This hub is sized as a coupling size code 7S component and is designed to mate with compatible 7S-series flexible coupling hubs and spider insert elements. No additional specific model compatibility data was provided by the manufacturer for this listing.

Installation Notes

Installation is typically performed by qualified mechanical or industrial maintenance technicians. De-energize and lock out the drive motor before removing or installing any coupling component. Ensure the bore and keyway are clean and free of burrs before pressing or sliding the hub onto the shaft. This hub alone does not form a complete coupling — a mating hub and a flexible spider insert element are required to complete the assembly before commissioning.