| 摘要 |
<p>PURPOSE:To reduce the sliding friction in the axial direction to a great extent and enable easy movement of a turning shaft in the axial direction by using fluid as a lubricant between the turning shaft and the supporting part of this turning shaft, and using magnetic force as the moving power in the axial direction of the turning shaft. CONSTITUTION:An air inflow pipe 10 communicating to two cylindrical porous parts 8 is formed in a supporting part 6. And around a disk part 12 a movable part 14 consisting of a magnetic body which is brought into contact with the both faces of the disk part 12 is arranged. By turning on electricity in a coil 29, a circular part 27 becomes an electric magnet and attracts the movable part 14 upward. Further, lubricating support both in the radial direction and in the axial direction of a turning shaft 2 can be enabled by feeding compressed air into the cylindrical porous parts 8 and disklike porous pads 16b through air inflow pipes 10 and 20.</p> |
