| 摘要 |
PURPOSE:To have a bush or a bearing pressed in a hole of a housing accurately and concentrically, by fitting a centering nut in one end of the hole of the housing, screwing a bolt therein, setting up the bush or the like in the other end, and fitting a core bar therein, while screwing a pressing nut in the other end of the bolt, thereby pressing it to the core bar. CONSTITUTION:A bolt 4, where a centering nut 3 is screwed in, is inserted into a hole of a housing 2, while a core bar 6, where a bush or a bearing 5 to be pressed in is attached, is passed through the bolt 4, and the bush or the bearing 5 is mounted on the end of a hole 1. And, a pressing nut 7 is screwed in the bolt 4, and the pressing nut 7 is further screwed therein till a stepped part 6a of the core bar 6 comes into contact with a surface of the housing 2, then the bush or the bearing 5 is pressed in the hole 1 of the housing 5. In this case, a thrust waster or a thrust bearing is installed between the core bar 6 and the pressing nut 7, and relative rotation is made so as to given to an interval between the pressing nut 7 and the core bar 6. |
