| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device which performs more efficient cooling by using airflow from a fan.SOLUTION: A housing 11 includes: multiple outer peripheral fins 23 extending in an axial direction at a cylindrical outer peripheral part 22; and multiple upper surface fins 24 radially extending in a radial direction at an upper surface part. A rotation shaft 12 includes a fan 14 facing the upper surface part of the housing 11. Air generated by the fan 14 and passing an area between the adjacent upper surface fins 24 is guided to an area between the adjacent outer peripheral fins 23. The structure allows heat to be efficiently radiated from the upper surface fins 24 and the outer peripheral fins 23 and efficiently cools a bearing 13. |
