Archive > 2016 > September 2016 > Minimum Design Speed Considerations for Sleevoil Bearings for Industrial Fan Applications

Minimum Design Speed Considerations for Sleevoil Bearings for Industrial Fan Applications - September 2016

Will Cannon, Application Engineer, Baldor Electric Company

The article "Minimum Design Speed Considerations for Sleevoil Bearings for Industrial Fan Applications" appeared in the September 2016 issue of Power Transmission Engineering.

Summary
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.

Keywords
bearings, sleevoil, hydrodynamic bearings, design, fans, low-speed, lubrication, hydrodynamic lubrication, Baldor Electric

The article "Minimum Design Speed Considerations for Sleevoil Bearings for Industrial Fan Applications" should appear in the box below, but if you do not see it, you can download it here.

It appears you don't have a PDF plugin for this browser. No biggie... you can click here to download the PDF file.