Lovejoy 68514436086 Flexible Coupling Hub 1-1/4 Inch Bore

Product Description

The LOVEJOY 68514436086 is a flexible coupling hub designed for power transmission applications requiring torsional flexibility and misalignment tolerance. Built from cast iron, this hub features a maximum bore diameter of 1-1/4 inches and a keyway sized at 1/4 inch wide by 1/8 inch deep. The outer diameter measures 4 inches with an overall length of 3-1/2 inches. It carries a maximum speed rating of 6000 RPM, making it suitable for a range of industrial drive and mechanical power transmission setups. Installation is typically handled by mechanical contractors, millwrights, or HVAC technicians working on motor-driven equipment.

This flexible coupling hub fits into applications where rotational power must be transferred between shafts while accommodating minor angular, parallel, or axial misalignment. The cast iron construction supports use in commercial and light industrial equipment such as pumps, compressors, fans, and blowers. The coupling size code is 6J, which corresponds to a specific spider or insert element within the Lovejoy jaw coupling product family. It is suitable for use in both new installations and replacement scenarios on existing mechanical drive systems.

Key Features

• Maximum bore diameter of 1-1/4 inches for shaft fitment flexibility
• Keyway dimensions of 1/4 inch wide by 1/8 inch deep for positive torque transfer
• Cast iron construction for durability in industrial environments
• 4 inch outer diameter and 3-1/2 inch overall length for compact installation
• Rated to 6000 RPM for medium- to high-speed drive applications
• Coupling size code 6J for compatibility with matching jaw coupling components

Compatibility

Designed as an OEM-style flexible jaw coupling hub for use with size 6J spider inserts and mating hubs in standard jaw-type flexible coupling assemblies.

Installation Notes

Installation should be performed by a qualified millwright, mechanical contractor, or licensed HVAC technician. De-energize and lock out all power to the driven equipment before beginning work, following OSHA lockout/tagout procedures. Ensure the bore and keyway are clean and free of burrs before pressing or sliding the hub onto the shaft. Verify shaft and hub alignment within the coupling manufacturer's specified tolerances before returning the system to service.