| 摘要 |
Provided are a roller bearing capable of testing a crowning easily, and a crowning designing method capable of saving time and effort for the design drastically. The optimum value (z<SUB>m</SUB> (µm)) of the drop quantity of the crowning at the end of the effective length of a roller (13) is determined by the following Formula (1) from the diameter (d (mm)) of the roller (13) and the effective length (L (mm)) of the roller (13): [Formula 1] 0.40(d + L) + 0.66 = z <SUB>m</SUB> |
