| 摘要 |
The sectional shape of a rolling surface of at least one of bearing component parts has the following relation between the order n (n being an arbitrarily chosen natural number) and the amplitude r of waviness relative to the circularity of the sectional shape. The order n and the amplitude r are logarithmically transformed to define X=Log(n) from the order n and Y=Log (rn) from the amplitude r of n-order. When a regression line Y=aX+b is determined, the ratio δ/&sgr; of the deviation δ at each X from the regression line of Y to the standard deviation &sgr; is chosen to be smaller than 4. |
