Lovejoy 68514436159 Flexible Coupling Hub 1-5/8 in Bore

Product Description

The LOVEJOY 68514436159 is a flexible coupling hub designed for use in power transmission applications where shaft-to-shaft misalignment must be accommodated without rigid mechanical stress. This cast iron hub accepts a maximum bore diameter of 1-5/8 inches and a keyway measuring 3/8 inches wide by 3/16 inches deep, providing a secure, positive-drive connection to the shaft. With an outer diameter of 6.35 inches and an overall length of 5.06 inches, it is sized for medium-duty industrial drive systems. Licensed mechanics and millwrights install this component as part of a complete flexible coupling assembly on pumps, compressors, fans, and similar rotating equipment.

This hub is suited for industrial and commercial drive train installations where rotational power must be transferred between two shafts with some degree of angular, parallel, or axial misalignment. The coupling size code is 9S, and the hub is rated for operation up to 3750 RPM. Typical applications include HVAC mechanical rooms, pump stations, and light industrial machinery where cast iron construction provides adequate strength and wear resistance under continuous-duty cycling.

Key Features

• Maximum bore diameter of 1-5/8 inches for compatibility with standard shaft sizes
• Keyway dimensions of 3/8 inches wide by 3/16 inches deep for positive-drive shaft engagement
• 6.35 inch outer diameter and 5.06 inch overall length for medium-duty drive applications
• Cast iron construction provides durability under continuous rotational load
• Rated to 3750 RPM for use in standard industrial and commercial equipment
• Coupling size code 9S for matching with corresponding flexible coupling components

Compatibility

Designed as an OEM-style replacement flexible coupling hub for industrial and commercial rotating equipment using size code 9S flexible coupling assemblies.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. De-energize and lock out the drive motor before removing or installing any coupling component, following LOTO procedures per OSHA 29 CFR 1910.147. Ensure the shaft and bore are clean and free of burrs before pressing the hub into position, and verify keyway alignment before applying load. Do not exceed the rated maximum RPM of 3750 during operation.