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Bard 1912-009 is an OEM replacement shaft used in Bard wall mounted HVAC equipment to transmit rotation between drive components and keep blower or fan assemblies running true. This shaft is sized at 19-3/8 inches long with a 3/4 inch diameter and is typically matched to specific bearings, hubs, and set screw locations used in Bard assemblies, so confirming the exact unit model and serial number before ordering is recommended. Replacing a worn, bent, or damaged shaft with the correct Bard factory part helps reduce vibration, protects bearings and wheels, and restores proper airflow and overall system reliability.