Lovejoy 68514436143 Flexible Coupling Hub 1-5/8 in Bore

Product Description

The LOVEJOY 68514436143 is a flexible coupling hub designed for use in power transmission applications where misalignment compensation and vibration damping are required. Manufactured from cast iron, this hub accepts a maximum bore diameter of 1-5/8 inches and features a 3/8 inch wide by 3/16 inch deep keyway for secure shaft engagement. With an outer diameter of 5.45 inches and an overall length of 4.44 inches, it is sized for medium-duty drive train assemblies. Rated to a maximum of 4500 RPM, the hub is well suited for industrial and mechanical service work performed by millwrights, maintenance mechanics, and power transmission technicians.

This coupling hub is used in rotating shaft applications across industrial, commercial, and light mechanical equipment. Typical installation scenarios include pump drives, compressor drives, conveyor systems, and similar belt or direct-coupled equipment where a flexible jaw-style or disc-style coupling is needed to accommodate angular, parallel, or axial shaft misalignment. The coupling size code is 8S, which identifies the mating spider or element required for a complete coupling assembly. This part represents one hub only and must be paired with a compatible mating hub and coupling element.

Key Features

• Cast iron construction provides durability in demanding mechanical environments
• 1-5/8 inches maximum bore diameter accommodates a range of shaft sizes up to that dimension
• 3/8 inches x 3/16 inches keyway secures the hub to the shaft and prevents rotational slippage
• 5.45 inches outer diameter suits medium-duty coupling applications
• 4500 RPM maximum speed rating suitable for a wide range of industrial drive applications
• Coupling size code 8S for straightforward mating component identification

Compatibility

Designed as an OEM-style flexible coupling hub for size 8S coupling assemblies. Verify bore diameter, keyway dimensions, and coupling size code against the existing installation before ordering. This listing is for a single hub only.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. Always de-energize and lock out the drive equipment before beginning coupling service, following LOTO procedures per OSHA and applicable local standards. Do not press or hammer the hub onto the shaft in a way that transmits impact loads through the coupling element. Verify shaft and bore alignment after assembly to prevent premature wear on the coupling spider or element.