| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing system capable of certainly releasing air in the inside of a bearing at the time when internal pressure of the bearing rises even when another member larger than a diameter of a closed seal is provided adjacent to the bearing concerning the bearing system using the closed seal considered to release air inside it at the time when the bearing rises by using elastic deformation of a lip. SOLUTION: It is devised to release air inside of the bearing from a clearance G by forming the clearance G between a side surface of a lip 152b and a member 4 as each of protruded parts 152c only makes contact with the member 4 when internal pressure of the bearing rises and the lip 152b is elastically deformed by forming a plural number of the protruded parts 152c to make contact with the member 4 arranged adjacent to the bearing at the time of elastic deformation of the lip 152b due to internal pressure rise of the bearing on a side surface of the bearing outside of the lip 152b of the closed seal 15.
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