Lovejoy 68514436167 Flexible Coupling Hub 2.25 in Bore

Product Description

The LOVEJOY 68514436167 is a flexible coupling hub designed for power transmission applications in industrial and mechanical drive systems. Machined from cast iron, this hub accepts a maximum bore diameter of 2.25 inches and a keyway measuring 0.5 inches wide by 0.25 inches deep. It measures 6.35 inches in outer diameter and 5.06 inches in overall length. Flexible coupling hubs are installed in pairs with an elastomeric spider element between them to transmit torque while accommodating minor shaft misalignment and dampening vibration. This component is sized to the 9S coupling size code and is rated to a maximum of 3,750 RPM.

This hub is used in industrial pump drives, compressor drives, conveyor systems, and other rotating equipment where shaft-to-shaft connection with vibration isolation is required. The cast iron construction makes it suitable for general industrial environments. Installation is performed by mechanics and millwrights as part of new drive assembly or coupling replacement during scheduled maintenance. This is a single hub; a complete flexible coupling assembly requires a matching hub and a spider insert of the appropriate durometer.

Key Features

• 2.25-inch maximum bore diameter with 0.5-inch x 0.25-inch keyway for secure shaft engagement
• Cast iron construction for durability in industrial drive applications
• 6.35-inch outer diameter and 5.06-inch overall length — coupling size code 9S
• Rated to 3,750 RPM maximum for moderate- to high-speed drive service
• Flexible coupling design accommodates minor shaft misalignment and reduces vibration transmission

Compatibility

Designed as an OEM-style flexible coupling hub for industrial drive assemblies using the 9S coupling size class. Requires a matching LOVEJOY 9S-series hub and a compatible spider insert to complete the coupling assembly.

Installation Notes

Installation is typically performed by a qualified millwright or mechanical technician. Isolate and lock out all power to the drive system before beginning work, following applicable OSHA lockout/tagout procedures. Bore and keyway should be verified against shaft dimensions before pressing or setting the hub. Do not operate the coupling assembly without the spider element seated properly between both hubs.