Lovejoy 68514436146 Flexible Coupling Hub 1-7/8 in Bore

Product Description

The LOVEJOY 68514436146 is a flexible coupling hub designed for power transmission applications in industrial and mechanical drive systems. With a maximum bore diameter of 1-7/8 inches and a keyway measuring 1/2 inch wide by 1/4 inch deep, this hub accepts standard keyed shafts and transmits torque while accommodating minor shaft misalignment. The hub has an outer diameter of 5.45 inches and an overall length of 4.44 inches. Constructed from cast iron, it delivers the rigidity and wear resistance required in demanding rotating equipment environments. Coupling Size Code 8S indicates the spider or insert element size this hub is rated to accept. Installation is handled by maintenance technicians and mechanical tradespeople working on pumps, compressors, fans, and similar driven equipment.

This flexible coupling hub is suited for industrial drive train assemblies where a keyed shaft connection is required. It is used in applications such as pump-to-motor couplings, fan drives, and compressor shaft connections in both commercial and light industrial settings. The cast iron construction makes it appropriate for dry, controlled environments where corrosion exposure is limited. At a maximum rated speed of 4500 RPM, it covers most general-purpose motor and pump drive applications. The Coupling Size Code 8S designation is used to match this hub with a compatible mating hub and spider insert of the same series.

Key Features

• 1-7/8 inch maximum bore diameter accepts a wide range of keyed shaft sizes
• 1/2 inch x 1/4 inch keyway width and depth for standard keyed shaft fitment
• 5.45 inch outer diameter and 4.44 inch overall length for defined envelope sizing
• Cast iron construction provides rigidity and durability in industrial drive applications
• Rated to 4500 RPM maximum for general-purpose motor and pump coupling use
• Coupling Size Code 8S for matching with compatible mating hub and spider insert

Compatibility

Designed for use with Coupling Size Code 8S mating hubs and spider insert elements. Confirm bore diameter, keyway dimensions, and coupling size code against the shaft and driven equipment specifications before installation.

Installation Notes

Installation should be performed by a qualified mechanic or millwright. De-energize and lock out the motor and driven equipment before handling any coupling components, following applicable LOTO procedures. Ensure the shaft and hub bore are clean and free of burrs before pressing or sliding the hub onto the shaft. Do not exceed the maximum rated speed of 4500 RPM, and verify that the mating hub and spider insert are of the matching coupling size series before final assembly.