Lovejoy 68514436129 Flexible Coupling Hub 1-5/8 in Bore

Product Description

The LOVEJOY 68514436129 is a flexible coupling hub designed for use in mechanical power transmission applications where shaft misalignment tolerance and vibration damping are required. This cast iron 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 a 4-5/8 inch outer diameter and an overall length of 3.94 inches, this hub is sized for mid-range industrial and HVAC equipment drives. It is rated to a maximum of 5,850 RPM, making it suitable for moderate-speed rotating equipment in commercial and light industrial settings.

This flexible coupling hub is typically installed in HVAC fan drive assemblies, pump systems, compressors, and general mechanical drive trains where shaft-to-shaft connection requires rotational flexibility. The coupling size code 7S designates the spider element series it is compatible with. Installation is performed by millwrights, HVAC mechanics, or pipefitters during new equipment commissioning or drive train maintenance.

Key Features

• Maximum bore diameter of 1-5/8 inches accommodates a range of shaft sizes
• Keyway dimensions of 3/8 inch width by 3/16 inch depth for positive shaft drive engagement
• 4-5/8 inch outer diameter and 3.94 inch overall length for compact, mid-range installations
• Cast iron construction provides durability in demanding drive applications
• Rated to 5,850 RPM for moderate-speed equipment compatibility
• Coupling size code 7S for pairing with the appropriate spider insert

Compatibility

This hub is part of the size code 7S flexible coupling series. Specific compatible spider elements and mating hubs should be selected based on the 7S coupling designation. Refer to LOVEJOY coupling selection documentation for torque ratings and spider durometer options appropriate to the application.

Installation Notes

Installation should be performed by a qualified mechanic or HVAC technician. Disconnect and lock out all power to the drive system before removing or installing coupling components. Ensure shaft and bore surfaces are clean and free of burrs before pressing or fitting the hub. Do not exceed the rated maximum RPM of 5,850 during operation.