| 摘要 |
PROBLEM TO BE SOLVED: To prevent the increase of temperature by improving lubricity of a rolling bearing device. SOLUTION: Feed ports A, A, and A for lubrication oil are formed in the vicinity of the small diameter parts D1 of the outer rings 26, 26, and 27 of a conical rolling bearing 20. Further, discharge ports B and B are formed in the vicinity of a large diameter part D2. This constitution causes a smooth flow of lubrication oil, fed through the feed ports A, A, along the taper surfaces 26a, 26a, and 27a of the outer rings 26, 26, and 27 from the feed ports A, A, and A toward the discharge ports B and B. After the outer rings 26, 26, and 27, a roller 30, and the inner rings 28 and 28 are sufficiently lubricated, the lubrication oil is discharged from the discharge ports B and B, and the feed and discharged of lubrication oil are smoothly performed. |
