| 摘要 |
PROBLEM TO BE SOLVED: To provide an assembling structure for preventing looseness between a shaft and a bearing coming from thermal expansion without setting a wider initial interference between a shaft and a bearing. SOLUTION: A hollow 5a is formed inside a drive shaft 5. A press fit member 6 with larger linear expansion coefficient than that of the material of the shaft 5 is pressed fit into the hollow 5a.
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