| 摘要 |
A bearing structure includes a cylindrical first member ( 10 ), and a second member ( 20 ) received in the first member. The first member is made of ceramic sintered material. The first member defines a first axle hole ( 11 ), and the first axle hole has a first radius. A chamber ( 12 ) is transversely defined through a middle portion of the first member, the chamber receiving the second member therein. The second member is made of metallic sintered material. The second member defines a second axle hole ( 21 ), and the second axle hole has a second radius. The first radius of the first axle hole is less than the second radius of the second axle hole. A shaft ( 30 ) is rotatably received in the first and second axle holes. When the shaft deviates from a central axis of rotation, the shaft only contacts the first member at the first axle hole.
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