| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device capable of maintaining a sealing performance for a long period of time without excessively increasing a rotational torque of a rolling bearing.SOLUTION: A sealing device 10 has a core metal 11, which includes a cylindrical part 13 to be fitted and fixed to an inner circumferential surface of an outer ring 2, and an annular ring part 14 in contact with an end face 2b of the outer ring 2 and extending radially outward from one end of the cylindrical part 13. A counter face 14a of the annular ring part 14 is provided with an annular projection 20 protruding from the counter face 14a toward a flange part 6. The annular projection 20 includes an annular outer circumferential part 21 axially extending from an annular ring part 14 side toward a flange 6 side and an inner circumferential part 23 having a diameter that gradually decreases from the top end 22 of the outer circumferential part 21 toward the annular ring part 14 side. A labyrinth seal for sealing a gap S is constituted between the top end 22 of the outer circumferential part 21 of the annular projection 20 and the flange part 6. |
