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Shaft Machining and Pillow Block Bearing Replacement

Commissioned: Suffolk County School District
Location: Long Island, New York
Date: 3/28/2011-3/31-2011
Services Provided: Machine a replacement shaft for an Air Handler, pillow block bearing replacement and blower balancing.
Background: KMZ-Motor was contacted by a Suffolk County School District to troubleshoot a Commercial Air Handler in one of their buildings. The Air Handler was very noisy and vibrated excessively. After reviewing the symptoms and troubleshooting the Air Handler, KMZ-Motor noted that the shaft was extremely worn and the pillow block bearings failed, causing excessive vibration and noise. Prolonged exposure to this would eventually cause the blower wheel to distort and become out of balance.
Worn Air Handler Shaft
Failed Bearing and neglect wore a groove in the drive shaft.                
Solution: To correct the problem, KMZ-Motor pulled the worn shaft from the Air Handler and began machining a new shaft in K&G's Long Island Repair Shop.
Custom Shaft Replacement:
Using a Milling Machine to cut a new 1/2" Center Key Way for the Blower Wheel and a 1/2" Key Way for the Coupling Connection.

KMZ-Motor reinstalled the shaft and replaced the pillow block bearings. The Field Technician used a Portable Balancer to ensure the Blower Wheel was in perfect balance.
KMZ-Motor was able to save the customer significant money and time by repairing the Air Handler rather than replacing it.