Lovejoy 68514458119 Oldham Coupling Hub 1.26in Od 3/8in Bore

Product Description

The LOVEJOY 68514458119 is an aluminum Oldham coupling hub with a polyacetal insert, designed for flexible shaft-to-shaft power transmission in motion control and light industrial drive applications. The hub measures 1.26 inches in outside diameter and 1.772 inches in overall length, with a 3/8 inch minimum bore diameter. The clamp-style design allows secure shaft engagement without set screws bearing directly on the shaft. Torque capacity is rated at 40 inch-pounds. Installed by mechanical technicians and machine builders, this hub is a component part of a complete Oldham coupling assembly.

This coupling hub is used in applications where misalignment compensation is required between two rotating shafts, such as in conveyor drives, pump-to-motor connections, encoder mounts, and general-purpose power transmission setups. The polyacetal insert transmits torque between the two hubs while absorbing minor angular and parallel misalignment. The aluminum hub construction keeps rotating mass low, making this hub suitable for servo and stepper motor drive trains as well as light-duty industrial machinery where shaft sizes are in the 3/8 inch range.

Key Features

• Clamp-style hub design for positive shaft retention without direct set-screw contact
• Aluminum hub construction reduces rotating inertia
• Polyacetal insert accommodates angular and parallel shaft misalignment
• 40 inch-pound torque rating suitable for light-duty drive applications
• 1.26 inch OD and 1.772 inch overall length in a compact envelope
• Sold as a single hub component — order 2 hubs of matching OD plus 1 insert for a complete coupling assembly

Compatibility

This hub is one component of a complete Oldham coupling. To assemble a functional coupling, order 2 hubs of the same outside diameter (bores may differ) and 1 compatible polyacetal insert. Designed for shafts with a minimum bore diameter of 3/8 inch.

Installation Notes

Installation is performed by mechanical technicians or machine builders during drivetrain assembly or maintenance. Disconnect and lock out all power to the drive system before installing or removing coupling components. Verify shaft and bore dimensions before assembly, and ensure both hubs are fully seated and clamping fasteners are tightened to equipment manufacturer specifications. Do not operate the coupling beyond its rated torque capacity.