Lovejoy 68514411739 Flexible Coupling Hub 1 Inch Bore

Product Description

The LOVEJOY 68514411739 is a flexible coupling hub designed for mechanical power transmission applications in industrial and commercial equipment. This hub accepts a maximum bore diameter of 1 inch and features a 1/4-inch by 1/8-inch keyway for positive shaft engagement. The hub measures 3.31 inches in outer diameter and 4.25 inches in overall length. Constructed from sintered iron, it delivers reliable torque transfer while accommodating minor shaft misalignment. Rated to 5,000 RPM, it is suitable for a wide range of rotating equipment installations. Note that a complete coupling assembly requires two hubs and one spider element, ordered separately.

This flexible coupling hub is used in industrial machinery, pump drives, compressor connections, conveyor systems, and similar power transmission setups where flexible shaft coupling is needed. It is sized under coupling code L110. Licensed mechanics and industrial service technicians typically install this component in both new equipment builds and field replacements. The sintered iron construction makes it appropriate for moderate-load, high-cycle applications common in commercial HVAC and industrial process equipment.

Key Features

• 1 inch maximum bore diameter for standard shaft sizes
• 1/4-inch by 1/8-inch keyway provides positive rotational shaft lock
• 3.31-inch outer diameter and 4.25-inch overall length for L110 coupling footprint
• Sintered iron construction for durability in moderate-load applications
• Rated to 5,000 RPM for use in higher-speed rotating equipment
• Sold individually — two hubs and one spider required for a complete flexible coupling assembly

Compatibility

Designed as an OEM-style replacement or new-build component for flexible jaw-type coupling assemblies using the L110 coupling size code. Requires a matching hub and a spider insert to complete the assembly.

Installation Notes

Installation is typically performed by a licensed millwright, industrial mechanic, or mechanical service technician. De-energize and lock out all power to the connected equipment before removing or installing coupling components. Ensure shaft and bore dimensions are verified before pressing or setting the hub, and confirm keyway alignment before securing the set fastener. Do not operate the coupling without a properly rated spider element in place between the two hubs.