| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor for HDD, which excels in high vibration accuracy, power saving, low noise, and resistivity against mechanical impact. SOLUTION: A gas-dynamic-pressure bearing is constituted by using two bearings of a radial bearing and a thrust bearing for supporting a shaft 2 which supports a hub 6, and the hub 6; a space region of a gas-dynamic-pressure bearing part is constituted inside the hub by disposing magneto-hydro seals on both ends or one at least on either end of the part constituting the gas- dynamic-pressure bearing; and a communicating hole 1 from the outside to the space region is provided on the shaft 2. |
