Lovejoy 68514436080 Flexible Coupling Hub 7/8 in Bore

Product Description

The LOVEJOY 68514436080 is a flexible coupling hub designed for power transmission applications in industrial and mechanical drive systems. This hub accepts a maximum bore diameter of 7/8 inches and includes a 3/16-inch by 3/32-inch keyway width and depth for positive shaft engagement. The outer diameter measures 4 inches with an overall length of 3-1/2 inches. Constructed from cast iron, the hub is rated to 6000 RPM and provides reliable torque transfer between shafts while accommodating minor misalignment. Coupling Size Code 6J. Licensed HVAC, plumbing, and mechanical technicians working on pump, fan, and compressor drive trains are the typical installers.

This flexible coupling hub is suited for use in residential and commercial mechanical systems wherever a keyed-shaft flexible jaw-style or disc-style coupling connection is required. Common applications include pump drives, fan assemblies, compressor shafts, and general industrial rotating equipment. The cast iron construction supports demanding duty cycles where moderate shock loads and vibration are present. When replacing a worn or damaged coupling hub, verify bore diameter, keyway dimensions, OD, and coupling size code against the existing hardware before installation.

Key Features

• 7/8-inch maximum bore diameter with 3/16-inch by 3/32-inch keyway for positive shaft lockup
• 4-inch outer diameter and 3-1/2-inch overall length — Coupling Size Code 6J
• Cast iron construction for durability in demanding drive applications
• Rated to 6000 RPM for high-speed shaft coupling requirements
• Flexible coupling design accommodates minor shaft misalignment and reduces vibration transmission

Compatibility

Designed as an OEM-style replacement flexible coupling hub for mechanical drive systems requiring a 6J-size hub with a 7/8-inch maximum bore and 3/16-inch by 3/32-inch keyway. Confirm coupling size code, bore, and keyway dimensions match the mating coupling half before installation.

Installation Notes

Installation should be performed by a qualified mechanical or industrial technician. De-energize and lock out the drive system fully before removing the existing coupling hub. Inspect the shaft for wear, scoring, or fretting before pressing or sliding the new hub into position. Consult applicable ANSI and OSHA lockout/tagout procedures and verify that key and setscrew engagement meet the drive manufacturer requirements before returning the system to service.