| 摘要 |
Provided is a spindle motor which includes a base, a sleeve fixed on the base and having a hollow portion, and a shaft rotatably installed in the hollow portion of the sleeve. In the spindle motor, a plurality of journal grooves are formed in an outer circumferential surface of the shaft to form a journal bearing which supports the shaft in a radial direction when the shaft rotates, and the journal grooves are arranged at an uneven interval. |
