| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary body having durability, by preventing the problem such as a split loss and vibration in a high temperature environment. <P>SOLUTION: This rotary body includes a hollow body part made of ceramics, and a solid shaft part made of ceramics fitted to both end part inner surfaces of the body part. The rotary body is characterized in that the body part and the shaft part have respectively a fitting surface to be fitted in a close contact state, and an air hole extending along the rotary axis direction of the rotary body, is formed on a fitting interface between the body part and the shaft part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
