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Home » Minimum Design Speed Considerations for Sleevoil Bearings for Industrial Fan Applications

Minimum Design Speed Considerations for Sleevoil Bearings for Industrial Fan Applications

September 1, 2016
Slow speed operation of fan systems within the air handling industry is generally performed due to two reasons: a coast down operation is required for hot (induced draft) fans to cool down before shutdown (often by using a turning gear), and operational efficiency improvements can be achieved during non-peak periods by slow speed operation using a VFD. In either case, when these fans are supported by hydrodynamic bearings, it is the oil film thickness developed from the bearing-shaft interaction that limits the minimum speed that can be maintained without causing premature wear and bearing failure. This paper will present a brief overview of lubrication theory and critical design parameters to achieve slow speed operation.
Design Applications Components Lubrication Fans Bearings Oil Technical Articles
KEYWORDS Baldor Electric bearings design fans hydrodynamic bearings hydrodynamic lubrication low-speed lubrication sleevoil
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