Lovejoy 68514436082 Flexible Coupling Hub 1 in Bore Cast Iron

Product Description

The LOVEJOY 68514436082 is a flexible coupling hub designed for mechanical power transmission applications. It accepts a maximum bore diameter of 1 inch and includes a keyway measuring 1/4 inch wide by 1/8 inch deep for positive shaft engagement. Built from cast iron, this hub offers the rigidity and wear resistance required in industrial and commercial mechanical drive systems. With a 4-inch outer diameter and a 3-1/2-inch overall length, it suits a range of shaft coupling configurations. Rated to 6000 RPM, it handles moderate- to high-speed drive line demands. HVAC equipment technicians, millwrights, and mechanical contractors install this component as part of a complete flexible coupling assembly.

This coupling hub fits applications where controlled misalignment compensation and vibration dampening are needed between coupled shafts. It is appropriate for use in fan drives, pump assemblies, compressors, and similar rotating equipment in commercial and light industrial settings. The cast iron construction makes it well suited to environments where durability and dimensional stability under load are priorities. It is sold as a single hub and requires a mating hub and spider insert to complete the coupling assembly.

Key Features

• 1 inch maximum bore diameter accommodates standard shaft sizes
• 1/4 inch x 1/8 inch keyway provides positive rotational drive engagement
• 4 inch outer diameter and 3-1/2 inch overall length for compact installation
• Cast iron construction delivers strength and dimensional stability under load
• Rated to 6000 RPM for moderate- to high-speed drive applications
• Coupling size code 6J for cross-reference and replacement sourcing

Compatibility

Designed as an OEM-style replacement or upgrade hub for flexible jaw-type coupling assemblies using the 6J coupling size designation. Compatible with matching 6J-series hubs and spider inserts in standard flexible coupling configurations.

Installation Notes

A licensed millwright or qualified mechanical technician should install this coupling hub following applicable ANSI and OSHA lockout/tagout procedures before shaft access. De-energize and isolate the drive system completely before removing any existing coupling components. Verify bore and keyway dimensions against the shaft before pressing or fitting the hub. Do not exceed the rated 6000 RPM maximum speed, and ensure the mating hub and spider insert are in good condition before returning the assembly to service.