Lovejoy 68514441313 Flexible Coupling Hub 9mm Bore

Product Description

The LOVEJOY 68514441313 is a flexible coupling hub designed for use in power transmission assemblies where controlled misalignment absorption and vibration damping are required. Machined to accept a 9mm maximum bore with a 3mm x 1.4mm keyway (width x depth), this hub pairs with a mating hub and a spider insert to form a complete jaw-style flexible coupling. The hub measures 1.08 inches in outer diameter and 1.72 inches in overall length. Constructed from sintered iron, it offers consistent dimensional accuracy and moderate load-bearing capacity. Two hubs and one spider insert are required to assemble a complete coupling unit. Licensed HVAC, mechanical, and industrial service technicians working on motor-to-shaft connections will find this hub a direct fit for light-to-medium duty drive applications.

This coupling hub is suited for residential and light commercial mechanical drive systems, including small pump drives, blower assemblies, and motor shaft connections where rotational speeds reach up to 18,000 RPM. Its L050 coupling size code identifies it within the standard jaw coupling series, allowing straightforward cross-reference when sourcing replacement hubs or spider inserts. The keyway configuration accommodates keyed shaft connections, securing the hub against rotational slip under load. Order two hubs and one spider insert to complete a functional coupling assembly.

Key Features

• 9mm maximum bore accommodates standard small-diameter motor and pump shafts
• 3mm x 1.4mm keyway (width x depth) for keyed shaft retention
• 1.08 inch OD and 1.72 inch overall length for compact drive applications
• Sintered iron construction provides dimensional consistency and durability
• Rated to 18,000 RPM maximum for high-speed drive compatibility
• L050 coupling size code for easy series identification and spider matching

Compatibility

Designed as an OEM-style replacement hub within the L050 jaw coupling series. Two hubs and one spider insert are required to complete the coupling assembly. Compatible spider and mating hub must share the L050 size designation.

Installation Notes

Installation should be performed by a qualified mechanical or HVAC technician. De-energize and lock out the drive motor before removing or installing any coupling components in accordance with OSHA lockout/tagout procedures. Ensure shaft and bore are clean and free of burrs before pressing or sliding the hub into position. Do not operate the coupling without the spider insert seated fully between both hubs.