| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing capable of taking a countermeasure against fragility-separation so as not to carry an electric current to rolling travel surfaces of inner-outer rings, by preventing reduction in electric conductivity between the inner-outer rings and a seal member, by preventing the formation of an oil film in a seal sliding part, by preventing the movement of grease to the seal sliding part.SOLUTION: In the rolling bearing, a plurality of rolling elements 3 are interposed between the rolling travel surfaces 1a and 2a of the inner-outer rings 1 and 2, and the seal member 5 is arranged in the outer ring 2, for blocking up a bearing space between the inner-outer rings 1 and 2 when a lip part 5c slidingly contacts with the inner ring 1. The seal member 5 is formed of a conductive construction material, and a grease leakage checking part is arranged in a cage 4 for holding the rolling elements 3, for checking flowing of the grease in the bearing space to a sliding contact part between the seal member 5 and the inner ring 1. |
