| 摘要 |
PURPOSE:To prevent generation of oscillation by using an angular contact ball bearing in place of a thrust ball bearing, combining the same with a radial bearing and pressing the angular contact ball bearing to a step part provided on the inside circumference of a cartridge by means of an elastic body. CONSTITUTION:A step part 9a of a prescribed height is provided on the inside circumference of a cartridge 9 supporting a work roll and a intermedite roll. A thrust receiving shaft 10 formed with a collar 10a at the intermediate part is inserted into the aperture 9b formed on the side face of the cartridge 9. An angular contact ball bearing 13 is disposed by bringing part thereof into contact with the collar 10a and step 9a of the shaft 10. Non-contacting seals 14 are disposed on both sides of the bearing 13 and a non-contacting seal type radial bearing 15 is disposed on the other side of the collar 10a and the bearing 13 is pressed to the step 9a by an elastic body 12. |
