| 摘要 |
PROBLEM TO BE SOLVED: To suppress action of unnecessary force to a rolling element of a cylindrical roller bearing.SOLUTION: A bearing device 1 includes a cylindrical roller bearing 10 and a ball bearing 20 arranged in an axial direction. A first outer ring 12 includes flange portions 12a, 12b for restricting axial relative movement of a first rolling element 16, on both end portions in the axial direction of the first outer ring 12. A first inner ring 14 includes a flange portion for restricting the axial relative movement of the first rolling element 16, on an end portion at an inner race 40 side of both end portions in the axial direction of the first inner ring 14. In a case when the first inner ring 14 and a second inner ring 24 are kept into contact with each other, a predetermined clearance gap is formed between the first outer ring 12 and a second outer ring 22. The predetermined clearance gap is larger than a relative movable amount of the second inner ring 24 to the second outer ring 22 in a direction to separate the second inner ring 24 from the first inner ring 14. |
