Lovejoy 68514412119 Flexible Hub Coupling 1.75 in Bore

Product Description

The LOVEJOY 68514412119 is a flexible hub coupling designed for power transmission applications in mechanical drive systems. It accepts a maximum bore diameter of 1.75 inches, features an outer diameter of 3.75 inches, and has an overall length of 4.5 inches. Constructed from sintered iron, the hub provides durable, repeatable performance under moderate to high rotational loads. Rated to 5000 RPM, this coupling suits a range of industrial and mechanical service environments. HVAC, mechanical, and millwright trades commonly install flexible hub couplings when connecting motor shafts to driven equipment while accommodating minor shaft misalignment and reducing vibration transmission between components.

This flexible hub coupling is suited for use in fan and blower drive assemblies, pump drive systems, and general mechanical power transmission setups. It is appropriate for both commercial and light industrial installations where a compact, sintered iron hub is specified. The L150 coupling size code identifies the series, allowing technicians to cross-reference replacement spiders, inserts, and mating hubs within the same series family. It ships as a single hub component; a complete coupling assembly typically requires a mating hub and a flexible spider insert.

Key Features

• 1.75 inch maximum bore diameter accommodates a range of common shaft sizes
• Sintered iron construction provides strength and dimensional consistency
• 5000 RPM maximum speed rating suits most fan, blower, and pump drive applications
• 3.75 inch outer diameter and 4.5 inch overall length in a compact hub form factor
• L150 series size code allows straightforward matching with compatible spider inserts and mating hubs

Compatibility

Designed as an OEM-style replacement flexible hub coupling for mechanical power transmission drive systems requiring the L150 series coupling size. Verify bore diameter, OD, and series designation against the existing installation before ordering.

Installation Notes

Installation is typically performed by licensed millwrights, mechanical contractors, or experienced HVAC technicians. Disconnect and lock out all electrical power to the drive motor before beginning coupling installation or replacement. Ensure shaft and bore dimensions are confirmed prior to pressing or keying the hub onto the shaft. Do not force the hub onto an oversized shaft, as this can damage the sintered iron bore and compromise coupling integrity.