| 摘要 |
PURPOSE:To prevent damage due to contact of rotary section against static section by arranging a roller such that its axis will be in parallel with the axis of rotary shaft while face through predetermined gap against the rotary shaft. CONSTITUTION:A rotary shaft 1 is supporting the white metals 9, 10 of upper and lower bearings 2, 3 rotatably. A roller 4 is arranged such that its axis will be in parallel with the axis of rotary shaft 1 while face through predetermined gap (c) against the rotary shaft 1 and supported rotatably through a ball bearing 11 on a bearing table 6. Consequently, in case of burning of white metals 9, 10, lowering of the height of rotary shaft 1 can be prevented resulting in prevension of damage due to contact between the rotary section and static section. |
