Lovejoy 68514441323 Flexible Coupling Hub 19mm Bore

Product Description

The LOVEJOY 68514441323 is a flexible coupling hub designed for use in mechanical power transmission applications. With a 19mm maximum bore and a 6mm x 2.8mm keyway width and depth, this hub accommodates a range of shaft sizes and keyed configurations. The outer diameter measures 1.75 inches and the overall assembled length is 2.12 inches. Constructed from sintered iron, the hub delivers solid, consistent performance in industrial and HVAC mechanical drive setups. A complete flexible coupling requires two hubs and one spider element — this listing covers a single hub only. Licensed mechanics and industrial technicians are the primary installers of this component.

This coupling hub is suited for light-to-medium duty power transmission applications such as pump drives, fan assemblies, blower shafts, and compressor couplings. The sintered iron construction makes it appropriate for dry or lightly lubricated environments. It is commonly found in commercial HVAC mechanical rooms, industrial equipment rooms, and pump station installations where shaft-to-shaft alignment and vibration dampening are required. The L075 coupling size code identifies the appropriate spider element to pair with these hubs for a complete assembly.

Key Features

• 19mm maximum bore accommodates a range of shaft diameters
• 6mm x 2.8mm keyway width and depth for keyed shaft connections
• 1.75 inch outer diameter and 2.12 inch overall length for compact installations
• Sintered iron construction provides durability in mechanical drive environments
• Coupling size code L075 — order two hubs and one spider for a complete coupling assembly
• Rated up to 10000 RPM maximum

Compatibility

This hub corresponds to coupling size code L075. A complete flexible coupling assembly requires two hubs (68514441323) and one compatible L075 spider element. Designed as an OEM-style replacement or new-installation hub for L075-class flexible coupling applications.

Installation Notes

Installation is typically performed by a licensed millwright, industrial mechanic, or HVAC technician. Shut down and lock out all connected machinery before removing or installing coupling components. Ensure the shaft bore and keyway are clean and free of burrs before pressing the hub into position. Verify shaft alignment after assembly to prevent premature spider wear and vibration.