| 摘要 |
Air bearing spindles designed to alleviate the problem of instability associated with high speed wobble of the spindle shaft are disclosed. In one example of such an air bearing spindle there is provided a shaft 4 mounted for rotation in two bearings 2,3. Each bearing comprises two series of eight radial jets 6 for the issuance of air. A pair of grooves 22 are provided between the respective pairs of jets. The grooves are flat bottomed and have mutually parallel sides. The pair of grooves have an angular separation of 135 degrees. <IMAGE> |
