Lovejoy 68514410775 Flexible Coupling Hub 7/8 in Bore

Product Description

The LOVEJOY 68514410775 is a flexible coupling hub designed for use in power transmission applications where vibration dampening and slight shaft misalignment tolerance are required. This hub features a maximum bore diameter of 7/8 inches and a keyway measuring 3/16 inches wide by 3/32 inches deep, allowing for a secure keyed shaft connection. The outer diameter measures 2.11 inches with an overall length of 2.12 inches. Constructed from sintered iron, this hub offers consistent dimensional accuracy and adequate strength for general mechanical drive applications. Two hubs and one spider element are required to complete a full flexible coupling assembly.

This coupling hub is suited for light to medium-duty industrial and mechanical drive installations, including pump drives, compressor connections, and general shaft-to-shaft power transmission setups. With a maximum rated speed of 9000 RPM and a coupling size code of L090, it fits within a well-established series of jaw-style flexible couplings. It is installed by licensed millwrights, mechanical contractors, and experienced maintenance technicians working on rotating equipment.

Key Features

• Maximum bore diameter of 7/8 inches with a 3/16 inches x 3/32 inches keyway for secure shaft engagement
• 2.11 inches outer diameter and 2.12 inches overall length for compact installation
• Sintered iron construction provides dimensional consistency and mechanical durability
• Rated to 9000 RPM for a wide range of drive applications
• Coupling size code L090 for straightforward series identification and spider selection
• Two hubs plus one spider required to complete the coupling assembly

Compatibility

Designed as an OEM-style replacement or new-installation hub within the L090 jaw-style flexible coupling series. A matching hub and a separate spider element must be ordered to complete the coupling assembly.

Installation Notes

Shut down and lock out all rotating equipment before beginning installation per applicable LOTO procedures. Ensure the shaft diameter and keyway dimensions match the hub bore before pressing or fitting the hub onto the shaft. Proper shaft alignment should be verified after hub installation and before the spider element is seated, as misalignment beyond the coupling's rated tolerance can reduce spider service life. This work is typically performed by a millwright or qualified mechanical technician.