| 摘要 |
The present invention relates to a spindle motor which comprises: a shaft in which a stepped portion is formed on the outer circumferential surface; a sleeve with a hollow cylindrical shape to support the shaft to be rotatable; a cap fixed at the upper portion of the sleeve contains a flat portion and a penetration hole in its center; and a base which includes a cylindrical support unit and Is fixed by inserting the sleeve into a hole formed in the center of the support unit. Damages to the shaft can be prevented by using the cap fixed to the sleeve. |
