Lovejoy 68514436155 Flexible Coupling Hub 1.375in Bore

Product Description

The LOVEJOY 68514436155 is a flexible coupling hub designed for mechanical power transmission applications. It accepts a maximum bore diameter of 1.375 inches and features a keyway measuring 0.3125 inches wide by 0.15625 inches deep for positive shaft engagement. Constructed from cast iron, this hub offers solid resistance to wear and deformation under load. With an outer diameter of 6.35 inches and an overall length of 5.06 inches, it is sized for mid-range industrial and commercial drive train installations. The hub is rated to a maximum of 3750 RPM. Installation is handled by qualified mechanical technicians or millwrights.

This flexible coupling hub is used in commercial and industrial mechanical drive applications where shaft misalignment compensation is required. Flexible coupling hubs are commonly installed on pump drives, fan shafts, compressor inputs, and similar rotating equipment in HVAC mechanical rooms and light industrial settings. The coupling size code 9S indicates its classification within the Lovejoy jaw coupling series. It is suitable for installations where controlled torsional flexibility between driver and driven shafts is part of the design requirement.

Key Features

• Maximum bore diameter of 1.375 inches for shaft fitment
• Keyway dimensions of 0.3125 inches wide by 0.15625 inches deep for positive keyed shaft connection
• Cast iron construction for durability and wear resistance under load
• 6.35 inches outer diameter with 5.06 inches overall length
• Rated to 3750 RPM maximum operating speed
• Coupling size code 9S for cross-reference and spider element matching

Compatibility

Designed as an OEM-style replacement flexible coupling hub for jaw-type flexible coupling assemblies requiring a size 9S hub with a maximum bore of 1.375 inches and cast iron construction.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. Disconnect and lock out all power to the drive system before beginning any coupling work. Confirm shaft diameter and keyway dimensions match the hub bore and keyway specifications before pressing or fitting the hub. Do not exceed the rated maximum speed of 3750 RPM during operation.