Lovejoy 68514436136 Flexible Coupling Hub 1-1/8 in Bore

Product Description

The LOVEJOY 68514436136 is a flexible coupling hub designed for mechanical power transmission applications. It accepts a maximum bore diameter of 1-1/8 inches and features a keyway measuring 1/4 inches wide by 1/8 inches deep for positive shaft engagement. Constructed from cast iron, this hub provides durable torque transfer between shafts while accommodating minor misalignment. With a 5.45-inch outer diameter and an overall length of 4.44 inches, it fits size 8S coupling configurations. Installation is performed by licensed millwrights, mechanical contractors, or maintenance technicians working on rotating equipment in industrial and commercial settings.

This flexible coupling hub is suited for use in pumps, compressors, fans, and general mechanical drive systems where a jaw-style or element-type flexible coupling is required. The cast iron construction makes it appropriate for moderate-load, moderate-speed applications up to 4,500 RPM. It is packaged individually and ordered in single-unit quantities, making it a practical direct replacement or new-installation component for size 8S coupling assemblies.

Key Features

• Maximum bore diameter of 1-1/8 inches for shaft fitment
• Keyway slot of 1/4 inches wide by 1/8 inches deep for positive keyed drive
• Cast iron construction for durability in industrial environments
• 5.45-inch outer diameter with 4.44-inch overall length
• Rated to 4,500 RPM maximum for moderate-speed drive applications
• Size 8S coupling designation for straightforward replacement matching

Compatibility

Designed as an OEM-style replacement or new-installation hub for size 8S flexible coupling assemblies in standard mechanical power transmission systems.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. De-energize and lock out all power sources before removing or installing coupling components, following LOTO procedures per OSHA 29 CFR 1910.147. Ensure shaft and bore dimensions are confirmed before pressing or sliding the hub onto the shaft, and verify keyway alignment before securing. Do not operate the coupling assembly without the mating hub and flexible element properly seated and balanced.