| 摘要 |
A pair of relief portions have been provided in a metal foil bearing so as to prevent the metal foil from contacting with the surface of the rotary shaft of the bearing during its high speed rotation. A relief portion is provided either at (1) both the axial ends of the metal foil, (2) on the outer surface of the rotary shaft at the position corresponding to the axial end of the metal foil, or (3) on the outer surface of the rotary shaft at a position further in than the portion corresponding to the axial end of the metal foil and axially extending therefrom up to the axial end of the rotary shaft.
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