| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing having excellent creep performance while preventing breakage of an O-ring.SOLUTION: A roller bearing 10 includes an outer ring 11, an inner ring 12, a plurality of rolling elements 13 incorporated rollably between the outer ring 11 and the inner ring 12, and an O-ring 30 made of an elastic material and housed in a recessed groove 20 formed on an outer diameter surface of the outer ring 11 so as to be continuous in a circumferential direction. A clearance groove 40 is communicated with the recessed groove 20. The clearance groove 40 is continuous from a groove bottom 21 and capable of housing a part of the O-ring 30 in one or both in the axial direction of the groove bottom 21. |
