| 摘要 |
PROBLEM TO BE SOLVED: To prevent degradation of the service life of a bearing by preventing depressurization caused by the use of a conical roller bearing. SOLUTION: An oil film is formed between a large end face 9 and a large flange surface 4 by setting the radius R of curvature of the large end face 9 of a conical roller 7 to be 75-85% of the reference distance Rb from a point of the conical angle to the large flange surface 4 of an inner ring, and wear caused by metal contact is prevented. |
