Lovejoy 68514436054 Flexible Coupling Hub 7/8 in Bore

Product Description

The LOVEJOY 68514436054 is a cast iron flexible coupling hub designed to transmit torque between shafts while accommodating minor misalignment in mechanical drive systems. With a maximum bore diameter of 7/8 inches and a keyway measuring 3/16 inches wide by 3/32 inches deep, this hub provides a secure keyed shaft connection. The outer diameter is 2.046 inches and the overall length is 2.38 inches. Rated to 7600 RPM, it suits moderate- to high-speed drive applications. Maintenance technicians, millwrights, and mechanical contractors install this type of component as part of a complete flexible coupling assembly.

This coupling hub is used in industrial and commercial mechanical drive systems where shaft-to-shaft power transmission is required. Typical applications include pump drives, compressor drives, fan drives, and conveyor systems. The keyed bore design ensures positive torque transfer without slip. The cast iron construction provides durability in environments with moderate vibration and load cycling. This hub is one element of a multi-piece flexible coupling assembly and must be paired with a compatible mating hub and spider insert for complete function.

Key Features

• Maximum bore diameter of 7/8 inches accommodates common shaft sizes in light industrial drive trains
• Keyway dimensions of 3/16 inches wide by 3/32 inches deep for positive keyed shaft engagement
• Rated to 7600 RPM for use in moderate- to high-speed rotating equipment
• Cast iron construction for strength and durability under cyclic mechanical loads
• 2.046 inch outer diameter and 2.38 inch overall length for compact installation envelopes
• Coupling size code 4J for cross-reference and assembly matching

Compatibility

Designed as an OEM-style flexible coupling hub for mechanical drive assemblies using coupling size code 4J. This hub must be matched to a compatible mating hub and spider element rated for the same coupling series. No specific equipment model compatibility was provided in the product data.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. De-energize and lock out all power to the driven equipment before removing or installing any coupling components, following OSHA lockout/tagout procedures. Ensure the shaft and bore are clean and free of burrs before pressing or sliding the hub onto the shaft, and confirm the key is fully seated in the keyway before securing. Do not exceed the rated maximum bore diameter or RPM for this hub.