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Reliability model of slide bearings with particular attention given to libricating oil

Bzura P.

Journal of Polish CIMAC

2011

Vol. 6, no 2

41-48

The paper presents the slide bearing with circulating lubrication as a system of series three-element structure, where lubricating oil is the weakest link. In accordance with the Pierce statement that "strength of chain is the strength of its weakest link", a bearing reliability model has been developed. It allows to use the lubricating oil to evaluate the probability of correct working of the whole slide bearing, i.e. the reliability. The lubricating oil was taken from the dynamically loaded radial slide bearing fatigue strength testing stand "Smok" ("Dragon"). Lubricity tests were carried out in the friction node of the "T-02" four-ball extreme pressure tester, with balls dipped in the oil samples. Then, from the analysis and evaluation of test results, probabilities of correct bearing operation were determined.