The Lennox 20A79 Pillow Block Bearing is a cast iron mounted bearing designed to support and align rotating shafts in HVAC equipment. It houses a lubricated bearing that reduces friction while allowing smooth shaft rotation under load. Commonly used in blower assemblies, fan shafts, and air handling units, this bearing ensures stable mechanical operation. Its heavy-duty cast iron hous... https://www.partshnc.com/20a79-lennox-bearing-1-716-bore