Lovejoy 68514412109 Flexible Hub Coupling 1-1/8 in Bore

Product Description

The LOVEJOY 68514412109 is a flexible hub coupling designed to transmit torque between shafts while accommodating minor misalignment in mechanical drive systems. With a maximum bore diameter of 1-1/8 inches, an outer diameter of 3-3/4 inches, and an overall length of 4-1/2 inches, this hub is sized for mid-range drive applications. Constructed from sintered iron, it offers consistent dimensional accuracy and adequate wear resistance for industrial and mechanical service environments. The coupling is rated to a maximum of 5000 RPM, making it suitable for moderate- to high-speed shaft connections. HVAC equipment technicians, mechanical contractors, and industrial maintenance personnel are the typical installers of this type of hub coupling.

This flexible hub coupling is used in mechanical power transmission applications where shaft-to-shaft torque transfer is required with some capacity for angular, parallel, or axial misalignment. Typical installations include HVAC fan assemblies, pump drives, compressor drive trains, and general industrial machinery. The L150 coupling size code identifies this hub within the standard jaw-style flexible coupling series, allowing pairing with the appropriate spider insert for the application load requirements.

Key Features

• Maximum bore diameter of 1-1/8 inches accommodates a range of shaft sizes up to that dimension
• 3-3/4 inch outer diameter and 4-1/2 inch overall length suit mid-range drive assemblies
• Sintered iron construction provides dimensional consistency and durability in drive service
• Rated to 5000 RPM maximum for moderate- to high-speed applications
• Coupling size code L150 for standard spider insert compatibility
• Sold as a single hub unit; spider element selected separately based on load class

Compatibility

This hub coupling carries the L150 coupling size code and is designed for use within the standard jaw-type flexible coupling system, requiring a matching L150-series spider insert. Verify bore diameter and keyway requirements against the driven shaft before installation.

Installation Notes

Installation should be performed by a qualified mechanical contractor or maintenance technician. Disconnect and lock out all power to the drive system before mounting or removing any coupling component in accordance with OSHA lockout/tagout procedures. Ensure shaft surfaces are clean and free of burrs before pressing or sliding the hub into position, and confirm hub set screws or keyways are properly engaged before returning the drive to service. Do not exceed the rated 5000 RPM maximum speed for this coupling.