Spindle motor having a fluid dynamic bearing system and a stationary shaft
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United States of America Patent
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Feb 7, 2017
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N/A
app pub date -
Jul 19, 2013
filing date -
Nov 30, 2007
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Abstract
The invention relates to a spindle motor having a fluid dynamic bearing system comprising axial and radial bearings that contains a rotor component (14) which encloses a stationary shaft (12), which in turn is connected at both its ends to axially aligned bearing parts (16; 18) that are fashioned such that they form capillary sealing gaps (32; 34), a recirculation channel (28) filled with bearing fluid that connects the remote regions of the bearing to each other, and an electromagnetic drive system (42, 44) for driving the rotor component.
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