| 摘要 |
A sintered bronze bushing 10 with a cylindrical outer surface 12 and two axial end faces 14 has a central through passage 16 forming the bearing surface of the bushing. The internal diameter of the passage varies along the length of the passage, with sections of the passage having either a constant diameter 20 or a variable diameter 22,24. The through passage is joined to the end faces by chamfered sections 18. In a miniature motor the use of the bushing permits use of a rotor shaft which is slightly bent.
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