Lovejoy 68514458121 Oldham Coupling Hub Aluminum 1.26 Od

Product Description

The LOVEJOY 68514458121 is a flexible Oldham coupling hub designed for shaft-to-shaft power transmission in precision mechanical drive applications. Constructed from aluminum with a polyacetal insert, this hub delivers flexibility and misalignment compensation between connected shafts. It has an outside diameter of 1.26 inches, an overall length of 1.772 inches, and accommodates a minimum bore diameter of 0.5 inches. The clamp-style design provides secure shaft engagement without the need for keyways in all configurations. Rated at 40 inch-pounds of torque, this hub suits light-duty industrial, HVAC, and mechanical drive installations where controlled flexibility and low backlash are required.

This coupling hub is used in mechanical drive systems where two rotating shafts require a flexible connection that can tolerate angular, parallel, or axial misalignment. Typical applications include small motor-to-shaft couplings in HVAC equipment, pump drives, and light industrial machinery. Note that a complete Oldham coupling assembly requires two hubs of the same outside diameter and one insert. Bores between the two hubs may differ, making this hub suitable for connecting shafts of different diameters within the same drive train.

Key Features

• Clamp-style hub design for secure, positive shaft retention
• Aluminum hub construction for lightweight strength and corrosion resistance
• Polyacetal insert provides flexible, low-backlash torque transmission
• Rated at 40 inch-pounds torque capacity
• Accommodates misalignment between connected shafts
• Two hubs plus one insert required for a complete coupling assembly — bores may differ between hubs

Compatibility

Designed as an OEM-style replacement or new-installation Oldham coupling hub for mechanical drive systems requiring a 1.26 inch outside diameter clamp-style hub with a 0.5 inch minimum bore. Complete assembly requires two hubs of matching outside diameter and one compatible polyacetal insert ordered separately.

Installation Notes

Installation is typically performed by a qualified millwright, mechanical technician, or HVAC service technician. Disconnect and lock out all power to the drive system before beginning hub installation or removal. Ensure shaft surfaces are clean and free of burrs before seating the hub bore, and verify that both hubs share the same outside diameter before ordering the mating insert. Do not exceed the rated torque of 40 inch-pounds for this hub size.