| 摘要 |
PROBLEM TO BE SOLVED: To easily grasp a state of the inside of a bearing from outside by paying attention to the fact that information on the state of the inside of the bearing is contained in grease in use. SOLUTION: A slinger 2 is provided in contact with the end face of an inner ring 4 of a bearing 1, and a ring-like seal cover 10 for covering between an outer ring 5 of the bearing and the outer periphery of the slinger 2 is provided to be applied to the bearing unit. With the seal cover 10, a sealing member 9 such as an oil seal, is mounted on its inside. In this configuration, a small hole 16 for collecting grease serving as an inspection sample is provided in the seal cover 10. A plug 17 is provided in the small hole 16 removably or so that it can be freely opened or closed. |
