Lovejoy 68514436514 Flexible Sleeve Coupling Hytrel

Product Description

The LOVEJOY 68514436514 is a one-piece solid sleeve coupling insert made from Hytrel, a flexible thermoplastic elastomer designed for use in jaw-type flexible couplings. This sleeve sits between two coupling hubs and absorbs shock, vibration, and misalignment loads in power transmission applications. It measures 2.5 inches overall length with a 5.06 inches outside diameter and accepts a minimum bore diameter of 0.75 inches (3/4 inch). The Series JE designation identifies the hub and sleeve family this insert is compatible with. It carries a rated torque capacity of 4,530 inch-pounds (511.82 N/m). Maintenance technicians and mechanical contractors install this part during scheduled coupling service or after sleeve wear in pump, compressor, and motor drive assemblies.

This sleeve insert is used in industrial and commercial mechanical drive systems where flexible jaw couplings connect a motor or engine shaft to a driven component such as a pump, blower, or compressor. Hytrel material provides good resistance to oil, hydraulic fluid, and moderate chemical exposure while maintaining flexibility across a range of operating temperatures. It is suited for light to heavy-duty torque loads in both continuous and intermittent drive applications. The one-piece design simplifies installation and reduces the risk of element loss during assembly.

Key Features

• One-piece solid sleeve design — no split or segmented elements to misalign during installation
• Hytrel construction provides flexibility, oil resistance, and durability under cyclic loading
• Rated torque of 4,530 inch-pounds (511.82 N/m) for demanding drive applications
• 5.06 inches outside diameter fits Series JE jaw coupling hubs
• 2.5 inches overall length with 0.75 inch minimum bore diameter
• Coupling Size Code 8 for straightforward hub and sleeve matching

Compatibility

Designed as an OEM-style sleeve insert for Series JE jaw-type flexible couplings requiring a Coupling Size Code 8 element with a 0.75 inch minimum bore diameter and 5.06 inch outside diameter.

Installation Notes

Installation is performed by maintenance technicians or mechanical contractors working on power transmission equipment. Always de-energize and lock out the drive motor before servicing any coupling component. Confirm hub alignment and shaft runout are within acceptable limits before seating the new sleeve to prevent premature wear. Do not use sharp tools or excessive force to seat the sleeve, as this can damage the Hytrel element.