Lovejoy 68514440738 Flexible Sleeve Hytrel 5/8 in Bore

Product Description

The LOVEJOY 68514440738 is a flexible one piece solid sleeve coupling insert made from Hytrel, a thermoplastic elastomer known for its flexibility, durability, and resistance to oils and fatigue. This sleeve fits into jaw-style coupling assemblies to transmit torque between shafts while absorbing shock, dampening vibration, and accommodating minor misalignment. It carries a rated torque of 1800 inch-pounds and is sized for a 5/8 inch minimum bore diameter. The sleeve measures 1.88 inches overall length and 3.75 inches outside diameter, placing it in the Series JE product line. Mechanical maintenance technicians and millwrights install this component during coupling assembly or scheduled replacement intervals on rotating equipment.

This sleeve insert is used in industrial and commercial drive train applications where a jaw-type flexible coupling connects two shafts on pumps, compressors, fans, conveyors, and similar rotating equipment. The Hytrel material suits environments where moderate chemical exposure, temperature cycling, or dynamic loading would degrade softer elastomers more quickly. It is a direct-fit Series JE sleeve for coupling size code 6 assemblies and is sold as a single piece.

Key Features

• Hytrel thermoplastic elastomer construction provides flexibility, fatigue resistance, and oil resistance
• Rated torque of 1800 inch-pounds for demanding drive applications
• 5/8 inch minimum bore diameter, compatible with Series JE coupling size code 6
• 3.75 inch outside diameter and 1.88 inch overall length for precise fitment
• One piece solid sleeve design simplifies installation and replacement
• Absorbs shock loads and dampens torsional vibration to protect connected equipment

Compatibility

Designed as a Series JE replacement sleeve insert for jaw-style flexible couplings with coupling size code 6 and a 5/8 inch minimum bore diameter. Specific hub compatibility should be verified against LOVEJOY Series JE coupling documentation before installation.

Installation Notes

Millwrights or mechanical technicians typically install jaw coupling sleeve inserts during shaft alignment procedures or preventive maintenance. De-energize and lock out all power to the drive system before disassembling the coupling. Ensure both coupling hubs are clean and free of debris before seating the sleeve. Do not exceed the rated torque specification for this sleeve during operation, as overloading will accelerate wear or cause premature failure.