| 摘要 |
A rotating device includes a base having a peripheral wall with a fastened top cover, an axial body with one end fixed to the base and another end joined with the top cover, a freely rotatable bearing body with the axial body thereinside, a radial dynamic pressure generating groove in either one of surfaces of the axial body, the axial and bearing bodies facing each other in a radial direction, a lubricating medium in a space between the axial and bearing bodies, a radially outward extending lower flange on the one-end side face of the axial body, and a radially outward extending upper flange on the another-end side face of the axial body, a bearing unit in a space between the upper and lower flanges in an axial direction, a lower rod fastened to the lower flange, and an upper rod encircling the lower rod fastened to the upper flange. |
