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Life Model Enhancement for Hybrid Ball Bearings
Tribology Transactions ( IF 1.759 ) Pub Date : 2019-09-11 , DOI: 10.1080/10402004.2019.1654052
Pradeep K. Gupta; Erwin V. Zaretsky

Based on experimental life data on silicon nitride balls, the stress-life exponent and life constant in the generalized ball life equation, developed earlier, are modified to better simulate the fatigue life of silicon nitride balls in hybrid ball bearings. The modified ball life equation is then integrated with generalized life equations for the outer and inner races to model the life of a complete hybrid ball bearing. It is found that in view of the relatively high stress-life exponent for silicon nitride balls, computation of hybrid bearing life with infinite ball life may not be unreasonable. Model predictions are in good agreement with limited available experimental life data on hybrid ball bearings.
更新日期:2020-01-04

 

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