| 摘要 |
PROBLEM TO BE SOLVED: To prevent the intrusion of foreign matter from the outside while preventing bearing torque, and to stably exhibit favorable seal performance.SOLUTION: A rolling bearing comprises a sealing device 17 which is constituted of a slinger 18 fixed to an inner ring 2, and a seal member 25 fixed to an outer ring 9. The seal member 25 comprises a first lip 39 which slide-contacts with the inner ring 2, and a second lip 46 which slide-contacts with the slinger 18. In the second lip 46, a wall thickness W2 of a lip tip 47 portion which slide-contacts with the slinger 18 is formed thicker than a wall thickness W1 of the other lip portion, one end part of the lip tip 47 in a thickness direction forms a protruded part 48 which protrudes to the thickness direction to an annular shape, the protruded part constitutes a slide-contact part 49 which is formed narrow in width as progressing toward a tip side in the thickness direction, and slide-contacts with the slinger on a line, and the slinger forms a disc plate part into an inclined shape toward a seal member direction in an axial direction, and integrally forms an annular flange part 22 which covers an upper part of the lip tip portion in the axial direction. |
