Lovejoy 68514410684 Flexible Coupling Hub L075 1/2 in Bore

Product Description

The LOVEJOY 68514410684 is a flexible coupling hub designed for use in mechanical power transmission applications. Manufactured from sintered iron, this L075-series hub accepts a 1/2 inch bore with no keyway. It measures 1.75 inches in outside diameter and 2.12 inches in overall length. The hub is rated for up to 90 in-lb of torque and a maximum speed of 10,000 RPM. Two hubs and one spider element are required to assemble a complete flexible coupling. Licensed trades and maintenance technicians install this component when connecting rotating shafts in HVAC, pump, and light industrial drive systems.

This hub fits L075-series flexible coupling assemblies and is suited for residential and light commercial mechanical systems where shaft alignment flexibility is needed. Typical applications include small pump drives, blower assemblies, and motor-to-load connections. The no-keyway bore configuration is used in installations where set-screw retention or a press fit is the intended fastening method. A complete coupling requires ordering two of these hubs along with one compatible L075 spider insert.

Key Features

• Sintered iron construction for durability in mechanical drive applications
• 1/2 inch bore with no keyway for set-screw or press-fit retention
• L075 series designation for straightforward spider and hub matching
• Rated to 90 in-lb torque and 10,000 RPM maximum speed
• 1.75 inch outside diameter and 2.12 inch overall length for compact installations
• Sold individually — two hubs plus one spider required for a complete coupling assembly

Compatibility

Designed for use in L075-series flexible jaw coupling assemblies. Two hubs of this type and one L075 spider element are required to build a complete coupling. Verify bore size and series match before ordering.

Installation Notes

Installation is typically performed by a licensed millwright, HVAC technician, or mechanical maintenance professional. Disconnect and lock out all power to the drive system before handling any coupling components. Ensure shaft and bore tolerances are within acceptable fit range before pressing or securing the hub. Do not operate the coupling assembly without the spider element properly seated between both hubs.