| 摘要 |
PROBLEM TO BE SOLVED: To provide a degradation evaluation method of roller bearing which can fully anticipate the expectancy life of roller bearing. SOLUTION: The degradation evaluation method is composed of: a process for creating a degradation evaluation curve C from an Is value obtained by applying the quantitative ferrographic method to the roller bearing for testing; a process for obtaining the Is value by applying the quantitative ferrographic method at the optional time after generation of abnormality of an actual roller bearing; and a process for obtaining an expectancy life T<SB>J</SB>of the actual roller bearing by developing the Is value on the degradation evaluation curve C. COPYRIGHT: (C)2006,JPO&NCIPI
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