Fluid dynamic pressure bearing and production method for the same
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United States of America Patent
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app pub date -
Jul 16, 2009
filing date -
Oct 21, 2004
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Abstract
A fluid dynamic pressure bearing composed of a cylindrical sintered compact includes: a thrust region which is formed on an end surface of the bearing and receives at least a thrust load; a roughed portion having small peaks and valleys formed on the thrust region; and thrust recesses for generating thrust fluid dynamic pressure, which are formed on the thrust region.
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