| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical bearing bush which keeps butted end faces in an intimate contact with each other and has an extremely high roundness on the inner peripheral surface without applying machining such as cutting and grinding onto the inner peripheral surface, and which is ideal for applications requiring a high dimensional precision, in particular, such as a motor bearing, a linear solenoid valve and a compressor, and also to provide its manufacturing method. SOLUTION: In a cylindrical bearing bush 1, a multiple-layer material 4 consisting of a plate-like back metal 2 made of nonferrous metals and a lubrication-coated layer 3 made of a synthetic resin composition which is coated and formed integrally on the surface of the back metal 2 is cylindrically wound with the lubrication-coated layer 3 faced inward, keeps butted end faces 5 in an intimate contact with each other, and is formed with a roundness of the inner peripheral surface between 3 and 15μm. COPYRIGHT: (C)2007,JPO&INPIT
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