Abstract
AbstractIn agreement with isothermal EHD theory, increases in speed and lubricant viscosity determine the increase in film thickness. Beyond certain limits, both speed and viscosity lead to a decrease in film thickness, as a result of thermal effects and starvation. To estimate starvation limits and film thickness in high‐speed, mist‐lubricated ball bearings, a new analytical methodology has been developed. This methodology is based both on the oil flow rate in ball‐race contacts and Hamrock and Dowson's starvation theory. This new methodology has been used to estimate minimum film thickness in a 7206C angular contact ball bearing, axially‐loaded, and rotated between 0 and 35,000 r/min−1. Good correlation between computed and experimental values of the minimum film thickness have been obtained.
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