| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller device and a roller shell capable of preventing the roller shell from rotating relatively to a bush while the roller shell is replaceable.SOLUTION: A roller shell 23 comprises a first cylindrical part 231 and a second cylindrical part 232. An outer diameter of the first cylindrical part 231 is larger than an outer diameter of the second cylindrical part 232, and an inner diameter of the first cylindrical part 231 is smaller than an inner diameter of the second cylindrical part 232. The first cylindrical part 231 is engaged with a bush small diameter part 22C, and the second cylindrical part 232 is engaged with a bush large diameter part 22D. The second cylindrical part 232 has a slit 23E which penetrates across an outer peripheral surface and an inner peripheral surface, and opens on an end face 23F. The roller shell 23 is engaged with a step part 22E. An engaging member 33 is fitted to a groove 22F and engaged with the slit 23E. A retainer 24 is formed in an annular shape, is detachably attached to a bush 22, and presses an end face of the roller shell 23. |
