Lovejoy 68514436060 Flexible Coupling Hub 7/8 in Cast Iron

Product Description

The LOVEJOY 68514436060 is a flexible coupling hub designed for mechanical power transmission applications in industrial and commercial equipment. This cast iron 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 shaft engagement. With an outer diameter of 3-1/4 inches and an overall length of 2.88 inches, it is sized for mid-range coupling assemblies. The hub is rated to a maximum of 7,600 RPM, making it suitable for motor-to-load connections in pumps, compressors, fans, and similar rotating equipment. Mechanical contractors and industrial maintenance technicians are the primary installers.

This flexible coupling hub is used in commercial and industrial mechanical systems where two shafts require a flexible, misalignment-tolerant connection. Typical applications include HVAC equipment drives, pump sets, and light industrial machinery where rotational loads must be transmitted between a motor shaft and a driven component. The keyway configuration allows secure torque transfer while the flexible coupling design accommodates minor angular or parallel shaft misalignment.

Key Features

• Maximum bore diameter of 7/8 inches for compatible shaft sizing
• 3/16 inches x 3/32 inches keyway width and depth for positive shaft lock
• 3-1/4 inches outer diameter with 2.88 inches overall length
• Cast iron construction for durability in rotating mechanical applications
• Rated to 7,600 RPM maximum speed
• Coupling size code 5J for matching with compatible spider and hub sets

Compatibility

This hub carries coupling size code 5J and is designed to mate with compatible LOVEJOY flexible coupling spiders and opposing hubs of the same size designation. No additional specific compatible model numbers were provided in the product data.

Installation Notes

Installation is performed by qualified mechanical or industrial maintenance technicians. De-energize and lock out all power to the drive equipment before beginning shaft or coupling work, following LOTO procedures per OSHA and applicable electrical codes. Ensure the shaft and bore are clean and free of burrs before pressing the hub onto the shaft, and verify keyway alignment before final seating. Do not exceed the rated maximum RPM for this hub in the assembled drive system.