Abstract
The prevailing cumulative failure curves of Rolling Contact Bearings (RCB) have two main drawbacks: they begin at the origin and have a large dispersion. The purpose of this study is to develop an ideal failure curve and overcome the present drawbacks. The ideal failure curve of RC bearings is obtained by applying a water-free lubricant to the tested bearings. This eliminates the cavitation erosion from the Bimodal failure mechanism and the synergistic effect with the mechanical failure mode. This new concept considers the fatigue process involved in the failure mechanism and suggests decreasing the dispersion of bearing life.
Highlights
In the book “Fundamentals of Mechanical Design” [1] R
The prevailing cumulative failure curves of Rolling Contact Bearings (RCB) have two main drawbacks: they begin at the origin and have a large dispersion
The purpose of this study is to develop an ideal failure curve and overcome the present drawbacks
Summary
In the book “Fundamentals of Mechanical Design” [1] R. H. Phelan presents a cumulative failure curve (Figure 1) for rolling contact, RC, bearings. High local and frequent loadings are typical of both Hertzian and cavitation loads that prevail in RC bearings. These types of loads cause fatigue stresses, requiring some time to develop damage. These observations call for a new type of failure curve for RC bearings
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