| 摘要 |
Disclosed herein is a spindle motor including a journal bearing and a thrust bearing, thus preventing the lack of fluid occurring as a result of the evaporation or scattering of fluid, and making it easy to control the injected amount of fluid. The spindle motor includes a rotating shaft having a thrust plate inserted perpendicularly into the upper portion thereof. A sleeve accommodates and rotatably supports the rotating shaft. A plate is provided such that the sleeve is secured to the plate. An inner cap is secured to the sleeve in such a way as to face the upper surface of the thrust plate, and a first fluid sealing part is defined between the thrust plate and the inner cap. An outer cap is secured to the upper portion of the inner cap, and a second fluid sealing part is defined between the inner and outer caps.
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