| 摘要 |
The invention relates to a fluid dynamic bearing having at least one first bearing part as well as a second bearing part that are rotatably supported with respect to one another about a rotational axis and separated from one another by a bearing gap filled with bearing fluid. Associated bearing surfaces of the bearing parts form a first and a second radial bearing that are marked by grooved bearing patterns disposed on at least one bearing surface. Between the radial bearings, there is a separator gap having an enlarged gap distance compared to the bearing gap. According to the invention, the ends of the grooved bearing patterns of the radial bearings adjoining the separator gap penetrate into the separator gap. This measure goes to prevent the creation of negative pressure at the ends of the grooved bearing patterns, as a result of which the formation of air bubbles is also reduced. The larger gap distance of the separator gap and the direct connection to the grooved bearing patterns result in an improved flow rate of the bearing fluid through the grooved bearing patterns.
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