Lovejoy 68514411745 Flexible Coupling Hub 1-3/8 in Bore

Product Description

The LOVEJOY 68514411745 is a flexible coupling hub designed for use in mechanical power transmission systems where shaft misalignment absorption and torque transfer are required. This hub features a 1-3/8 inch maximum bore diameter with a 5/16 inch wide by 5/32 inch deep keyway for a keyed shaft connection. The outer diameter measures 3.31 inches and the overall length is 4-1/4 inches. Constructed from sintered iron, the hub offers solid load-bearing performance in industrial and commercial drive applications. Note that a complete flexible coupling assembly requires two hubs and one spider element, sold separately.

This hub is suited for light-to-medium industrial drive applications including pump drives, compressor drives, conveyor systems, and general power transmission equipment. It carries a coupling size code of L110 and is rated to 5000 RPM maximum, making it appropriate for moderate-speed rotating equipment installations in commercial HVAC, industrial, and mechanical service environments. A licensed or experienced mechanic or millwright typically handles installation in production and mechanical equipment settings.

Key Features

• 1-3/8 inch maximum bore diameter with keyed shaft connection
• Keyway dimensions: 5/16 inch width by 5/32 inch depth
• 3.31 inch outer diameter and 4-1/4 inch overall length
• Sintered iron construction for durable load-bearing service
• Rated to 5000 RPM maximum operating speed
• Coupling size code L110 — order two hubs plus one spider for a complete assembly

Compatibility

Compatible with L110 series flexible coupling spiders and mating hubs. A complete coupling assembly requires two hubs and one spider element. Consult the L110 series coupling spider for the correct elastomer element to complete this assembly.

Installation Notes

Installation is typically performed by a millwright, mechanical technician, or qualified maintenance professional. Always de-energize and lock out the drive system before installing or removing coupling components. Ensure shaft and bore tolerances are within acceptable fit specifications before pressing or sliding the hub onto the shaft. Align connected shafts within the coupling manufacturer's specified angular and parallel misalignment limits before tightening the coupling assembly.