| 摘要 |
PURPOSE:To enable finish work to be easily performed sufficiently smoothly and highly accurately even by driving torque of a motor after completion of assembly by forming a disk fixing clamp of a material the same as a hub body and making a removable external flange ring unit the same as an external flange part in material and sectional shape. CONSTITUTION:A hub 6 is constituted of a hub body 10 consisting of steel material of stainless steel and the other steel or the like and a fixed external flange part 11 of good cutting material of a aluminum and copper system metal or the like secured by shrink fit and press fir or the like integrally with the one end peripheral edge of this hub body 10. A disk fixing clamp 16 is formed with a material equal to the hub body 10, while this clamp 16 additionally provides in its peripheral edge of a removable external flange ring unit 18 formed with a material further with a sectional shape equal to those of the external flange part 11. Thus even by rotational torque of a motor itself after completion of assembly, finish work can be easily further high accurately performed when the hub 6 is constituted of the fixed external flange part 11 of good cutting material. |
