| 摘要 |
PURPOSE:To prevent a peripheral part of a rotary unit, particularly increased with a rotational speed, from coming into contact with a thrust bearing, even in the case of setting the rotary unit tilted or setting it up horizontally. CONSTITUTION:A device has a radial bearing 4, thrust bearing 2, 3 provided in both ends of the radial bearing 4 and a rotary unit 5 rotatably provided in the radial bearing 4 and the thrust bearings 2, 3. At the time of rotating the rotary unit 5 received by the radial bearing and the thrust bearings, a minimum value of clearance width, generated between the rotary unit and the thrust bearing, is increased larger than a minimum value of clearance width generated between the radial bearing and the rotary unit. |
