Lovejoy 69790400029 Rigid Coupling Hub 3.31 in Carbon Steel

Product Description

The LOVEJOY 69790400029 is a rigid coupling hub designed to create a fixed, non-flexible mechanical connection between shafts in power transmission applications. Manufactured from carbon steel, it offers the structural strength needed to handle torque transfer without deflection or angular misalignment compensation. With a 3.31-inch outside diameter, this hub is sized for mid-range drive assemblies found in industrial and commercial mechanical systems. Installation is typically performed by millwrights, maintenance technicians, or mechanical contractors working on pumps, compressors, conveyors, and similar rotating equipment.

This rigid coupling hub is suited for applications where precise shaft alignment is maintained and no flexibility is required in the coupling assembly. Typical install scenarios include pump-to-motor connections, fan drive assemblies, and gearbox input shafts in commercial and light industrial settings. Because rigid couplings transmit both torque and any misalignment forces directly to connected shafts and bearings, they are best applied where shafts are carefully aligned during installation.

Key Features

• 3.31-inch outside diameter for mid-range shaft coupling applications
• Carbon steel construction provides high strength and torque capacity
• Rigid design ensures zero flex for precise, direct torque transmission
• Single-piece hub configuration for straightforward installation
• Package quantity of 1 hub per unit

Compatibility

Designed as an OEM-style rigid coupling hub for mechanical power transmission assemblies requiring a 3.31-inch outside diameter carbon steel hub.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician familiar with shaft alignment procedures. Disconnect and lock out all power to the drive system before handling any coupling components. Rigid couplings require precise shaft-to-shaft alignment prior to final assembly, as any misalignment will be transmitted directly to bearings and connected components. Refer to applicable ANSI and machinery manufacturer guidelines for shaft fit tolerances and fastener requirements.