Lovejoy 69790400033 Rigid Coupling Hub 1 in Bore Carbon Steel

Product Description

The LOVEJOY 69790400033 is a rigid coupling hub designed to connect shafts in mechanical drive systems where zero backlash and precise shaft alignment are required. Machined from carbon steel, this hub features a 1-inch bore and a 3.31-inch outside diameter. A 1/4-inch wide by 1/8-inch deep keyway is machined into the bore, allowing positive torque transfer via a standard key. Rigid coupling hubs are installed by licensed millwrights, industrial mechanics, and pump or HVAC drive-train technicians wherever shaft-to-shaft connections must be fixed and non-flexible.

This hub is suited for use in pump drives, blower assemblies, compressor couplings, and other rotating equipment where shafts run in true alignment. It is appropriate for both light industrial and commercial mechanical systems. The carbon steel construction makes it a dependable choice in dry, indoor drive applications. The hub pairs with a matching rigid coupling hub and a center element or sleeve to complete the coupling assembly.

Key Features

• 1-inch bore accommodates standard shaft sizes in pump and blower drive applications
• 3.31-inch outside diameter provides a robust hub body for torque transmission
• 1/4-inch wide by 1/8-inch deep keyway ensures positive key engagement and eliminates slippage
• Carbon steel construction offers high strength and resistance to mechanical stress
• Rigid design delivers zero backlash for precise shaft synchronization

Compatibility

Designed as an OEM-style replacement or new-installation rigid coupling hub for mechanical drive assemblies requiring a 1-inch bore with a 1/4-inch by 1/8-inch keyway configuration.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. Disconnect and lock out all power to the drive system before handling any coupling components. Ensure both shafts are in true axial and angular alignment before torquing the hub into its final position. Follow applicable ANSI or OSHA lockout/tagout procedures throughout the service process.