Lovejoy 68514456626 Flexible Screw Hub Coupling

Product Description

The LOVEJOY 68514456626 is an anodized aluminum flexible screw hub designed for use in flexible shaft coupling assemblies. Part of the EC050 series with size code ES075, this hub accepts a minimum bore diameter of 0.25 inches and measures 0.75 inches in both outside diameter and overall length. It uses a set screw retention style and is rated for up to 5 in-lb of torque. Technicians in HVAC, mechanical, and industrial applications install this hub as one half of a two-piece flexible coupling system to transmit rotational motion between shafts while accommodating minor misalignment.

This hub is suited for light-duty coupling applications in residential and commercial mechanical systems where compact size and corrosion resistance are priorities. Its anodized aluminum construction keeps weight low at 0.03 pounds while providing a durable, oxide-hardened surface. The set screw style allows for straightforward shaft retention without specialized tooling. It is commonly paired with a matching flexible coupling insert and opposing hub to complete the drive assembly in small motor or pump configurations.

Key Features

• Anodized aluminum construction for corrosion resistance and reduced weight
• Set screw retention style for secure, tool-accessible shaft locking
• 0.75 inches OD and 0.75 inches overall length for compact installation envelopes
• Minimum bore diameter of 0.25 inches fits common small-shaft applications
• Rated to 5 in-lb torque for light-duty drive applications
• Part of the EC050 series, size code ES075

Compatibility

Designed as an OEM-style replacement or new-installation screw hub for EC050 series flexible coupling assemblies requiring the ES075 size code with a 0.25 inches minimum bore diameter.

Installation Notes

Installation is typically performed by a licensed HVAC technician, plumber, or mechanical contractor. De-energize and lock out all power to the drive system before handling any coupling components. Ensure shaft and bore surfaces are clean and free of burrs before seating the hub. Tighten the set screw to the fastener manufacturer's specification using the appropriate hex key and verify coupling alignment before returning the system to service.