| 摘要 |
PROBLEM TO BE SOLVED: To provide an OA roller in which inconvenience in using a stepped shaft is resolved and a swell phenomenon of an end is suppressed even when an elastic body is contracted in manufacturing.SOLUTION: An OA roller 1 includes a rod-like shaft 2 as a shank, and an elastic body 3 covering a predetermined area at a center portion side in an axial direction of the shaft 2. At an end of the elastic body, there is provided an annular hollow part 3GR in which the elastic body 3 is notched into a recessed shape from an end border side around the shaft, and a shaft diameter SD at a boundary BL between the hollow part 3GR and a solid part 3SH at the center portion side with respect to the hollow part is at least identical. |
