| 摘要 |
PROBLEM TO BE SOLVED: To reduce the wear of a seal member or a member which is brought into slidable contact therewith without damaging the sealing performance, prolong the service life of grease to be sealed, and reduce the cost. SOLUTION: A metallic ring 13 as a core is fitted to an inner circumference of an end part of an outer ring 3, a seal member 14 is integrated with a bent part toward the inner diameter side, and s slinger 15 of a almost U-shape is fitted to a member 6 on an inner ring 2 side inwardly on the outer side in the axial direction of the seal member. The seal member is provided with a main lip 113a which is brought into light contact with an inner cylinder 15i of the slinger 15 and a non-contact auxiliary lip 13b, a slinger outer cylinder 15o is provided with a non-contact outer diameter lip 14c and an eaves-shaped projected part 14d, and a labyrinth is formed on the projected part 14d and the outer diameter lip 14c between these parts and the end part of the slinger outer cylinder 15o. |
