| 摘要 |
PROBLEM TO BE SOLVED: To prevent uneven abrasion in a cam surface of one member of an inner ring or an outer ring of a one-way clutch for achieving a long service life of it. SOLUTION: A cam surface 10a is provided in the inner ring 10 to gradually enlarge a space to the outer ring 11 in one circumferential direction to form a wedge-like space, and a roller 13 is provided between the cam surface 10a and an inner circumferential surface of the outer ring 11, so the inner ring 10 and the outer ring 11 are changed between a lock state where they are synchronously rotated and a free state where they are relatively rotated based on a circumferential position of the roller 13 to the wedge-like space in this one-way clutch, where a lubricating oil holding part 30 is formed in the cam surface 10a. |
