Keeping their cool

Document Type

Article

Publication Date

5-6-2004

Abstract

Methods to avoid problems related with high operating temperature for journal bearings are discussed. Elevated operating temperature damage bearings, seals and shafting, which may lead to severe vibration and even failure of equipment. Bearings made from certain plastics and carbon composites can tolerate higher temperatures than babbitt types. Of the mineral-based oils, recent hydrocracked turbine oils arethe most stable with temperature, while inexpensive 'once through' oils like those used in mist and drip feeds are the least. Minimum film thickness is an important metric in oil fed bearings because an insufficient amount promotes elevated temperatures and wear.

Publication Source (Journal or Book title)

Machine Design

First Page

93

Last Page

96

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