| 摘要 |
PURPOSE:To prevent the center deflection of a revolution transmission member in the axial direction of a rotary shaft, even if a fastening bolt is tightened. CONSTITUTION:A contracted diameter ring part 17 whose outer surface is formed in a tapered form is formed at least on one side surface of a revolution transmission member so as to be continuous to a shaft hole. A tightening ring 14 whose inner surface is formed to a tapered form is fitted on the outer surface of the contracted diameter ring part 17, and the tightening ring 14 and the revolution transmission member are tightened by a tightening bolt 19. |
