Lennox 20A79 Bearing

The Lennox 20A79 is a heavy-duty 1 7/16" bore replacement bearing specifically engineered for high-static HVAC blower assemblies and industrial air handlers. Designed for precision alignment within Lennox commercial units, this pillow block bearing or flange-mounted insert ensures smooth rotation and minimizes vibration across the drive shaft. The 1 7/16-inch interior diameter is critical for maintaining the structural integrity of the blower shaft assembly under high RPM conditions. Whether you are performing a preventative maintenance overhaul or responding to a catastrophic failure, using a direct OEM Lennox 20A79 equivalent ensures the correct tolerances are met for the housing and locking collar. This component is built to handle the radial and axial loads common in large-scale air distribution systems, reducing friction and preventing premature motor wear. Proper lubrication and securing of the setscrews are essential for maximizing the service life of this mechanical power transmission component in demanding environments.

• Precision Machined Bore: The 1 7/16" bore provides an exact fit for HVAC blower shafts, preventing shaft scoring and slip.
• Load Management: Engineered to stabilize fan belt drive systems, reducing torsional stress on the motor and pulleys.
• Direct Compatibility: Built to the exact specifications of the Lennox 20A79, ensuring seamless integration into existing commercial HVAC equipment.
• Vibration Dampening: High-grade internal races and ball bearings minimize harmonic noise and mechanical fatigue within the cabinet.

What is the exact shaft size for this bearing?
The Lennox 20A79 is designed for a 1 7/16-inch diameter shaft. Always use a micrometer to verify the shaft condition, as any wear or pitting can lead to premature failure of the new bearing.

Can this bearing be used in high-temperature air streams?
Yes, this component is rated for standard commercial HVAC operating temperatures. If the application involves extreme heat, ensure you are utilizing a high-temperature grease that meets Lennox technical specifications.

Does this include the housing or just the insert?
The 20A79 typically refers to the bearing insert with the 1 7/16" bore. Verify your existing housing dimensions to ensure the outer race diameter matches your current hardware for a proper press-fit or slip-fit installation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.