| 摘要 |
PROBLEM TO BE SOLVED: To obtain a clutch release bearing device which can suppress rise of starting torque and rotating torque, and can improve sealing performance without increasing bearing dimensions, weight, the number of part items and cost.SOLUTION: A clutch release bearing 2a comprises a pair of seal rings 23, 9b. The seal ring 23 on a flange part 18a side of a bearing cage 3a is provided, on an internal peripheral face, with a contact lip 32, a tip edge of which slidably contacts with an external peripheral face of the corresponding end part of an inner ring 7 in an axial direction. The seal ring 23 is also provided, on an internal peripheral face, with a non-contact lip 31, a tip edge of which adjacently faces an external peripheral face of the corresponding end part of an inner ring 7 in the axial direction, on the other side of the contact lip 32 in the axial direction to form a labyrinth seal 33. A drainage recessed groove 40 for making an axial clearance space 20 and an outside space 37 communicate with each other is formed at a portion located at a lower end in a use state out of a single side face of the flange part 18a in the axial direction and an internal peripheral face of a cover part 39. |
