| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent short life separation and roller cracks caused by internal defects in strict usage conditions of a high load and high surface pressure. SOLUTION: In a roller bearing where a plurality of rollers are arranged between inner and outer wheels so that they can be rolled in a peripheral direction, it is assured that there are no defects where square root length exceeds 0.2 mm within a range where an average diameter Da is 2% deep from the surface of the rolling surface in the rollers, and there are no defects where the maximum length exceeds 0.5 mm within the total sectional range of the rollers. COPYRIGHT: (C)2004,JPO
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