| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid dynamic pressure bearing system design enabling a manufacturer to observe the height of the liquid level of a lubricating oil in a system to prevent the lubricating oil from becoming short or overflowing. SOLUTION: This fluid dynamic pressure bearing system related to one embodiment comprises a bearing sleeve, and a shaft inserted into the inner cylindrical inner cavity of the bearing sleeve. A bearing clearance is formed between the shaft and the bearing sleeve, and the lubricating oil is filled in the bearing clearance. A shield surrounds the bearing sleeve. The shield is fixed to a recessed part formed on the upper surface of the bearing sleeve at a position apart from the bearing clearance. The shield is pressed against the sharp edge of the recessed part by a metal ring disposed in the recessed part. COPYRIGHT: (C)2005,JPO&NCIPI
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