| 摘要 |
PROBLEM TO BE SOLVED: To provide stable bearing performance and to improve working accuracy and assembling accuracy of a housing. SOLUTION: A radial bearing clearance is formed between the inner periphery of a bearing sleeve 8 made of sintered metal and the outer periphery of a shaft member 2. During rotation of the shaft member 2, the shaft member 2 is supported radially non-contactly by dynamic pressure of oil formed in the radial bearing clearance. The housing is molded with resin using the bearing sleeve as an insert component. Resin composition at this time is a crystalline material having crystallinity of 20% or more. COPYRIGHT: (C)2004,JPO
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