| 摘要 |
PURPOSE:To generate a large supporting force by providing a land section having a gap between the guiding face and the guided face smaller than other portions at one portion of a static pressure generating unit and forming many recesses having slant faces on the surface of the land section. CONSTITUTION:The return flow of the pressure fluid fed to a static pressure generating unit is controlled by a static pressure squeezing land section A2. The static pressure is generated in the static pressure generating band width L, and this static pressure is applied to the guiding face 21 of a rail member 2 and the guided face 31 of a moving member 3 to keep them at a fixed distance. In this case, a land section B1 holds a fixed small gap E not to bring the guided face 31 and the guiding face 21 into contact by the action of the static pressure. Accordingly, when the moving member 3 is moved in the straight line direction against the rail member 2, a fluid between many recesses 6 having slant faces 60 and opposing faces to them is compressed, and the dynamic pressure is generated. |
