| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing device capable of reducing its size and reducing a positioning work burden for a pair of lubrication grooves.SOLUTION: A rolling bearing device includes two rolling bearings 10 arranged side by side in the axial direction, the rolling bearings 10 each including an inner ring 1 having an inner ring side raceway surface 1a on the outer periphery, an outer ring 3 having an outer ring side raceway surface 3a on the inner periphery, and rolling elements 5 for rolling on the inner ring side raceway surface 1a and the outer ring side raceway surface 3a, the outer rings having end faces matching each other in use. A first lubrication groove 3c is formed in the end face 3b of one of the two outer rings 3, and a second lubrication groove 4c is formed in the other end face 4b. The first lubrication groove 3c and the second lubrication groove 4c are formed in the circumferential direction while being inclined in mutually opposite directions, so that the first lubrication groove 3c and the second lubrication groove 4c cross each other when the end faces match each other. |
