| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing in which, even when the plurality of roller bearings are arranged in adjacent to each other, seizure in a rolling face of a roller and an outer peripheral face of a cage of each roller bearing attributable to oil film shortage can be suppressed by supplying a sufficient amount of lubricating oil to the rolling face of the roller and the outer peripheral face of the cage.SOLUTION: A cage 60 includes projecting portions 77 formed on axial end faces 71A of a first annular portion 61 and a second annular portion 62 which are inside a pocket 71, and a first through hole 72 and a second through hole 74 axially penetrating through the projecting portions 77, respectively. A roller 50 includes recessed portions 51 formed on both axial end faces 50A, and a through hole 52 axially penetrating through the recessed portions 51. The roller 50 is retained by engagement of the recessed portions 51 with the projecting portions 77 of the cage 60, and communicates an axial-direction end face at one side of the fist annular portion 61 with an axial-direction end face at the other side of the second annular portion 62 through the first through hole 72, the second through hole 74 and the roller through hole 52. |
