| 摘要 |
<p>PROBLEM TO BE SOLVED: To keep stable rotation supporting by restraining the occurrence of sputtering in the clearance of a static pressure gas bearing. SOLUTION: In a spindle for an electrostatic coating device in which a rotor 8 of a rotational force generator connected to a rotating shaft 7 and the rear end part of the rotating shaft is incorporated inside a housing 1 connected to a high voltage generator 2, and the rotating shaft 7 and the rotor 8 are freely rotatably supported though a beating clearance 6 of a static pressure gas being, and a coating material spray head is fitted to the front end part of the rotating shaft 7, a conducting layer projecting to the bearing clearance is formed on at least one surface of the rotating shaft 7, of the rotor 8, or the rotating shaft 7 of the housing 1 or the surface opposite to the rotor 8.</p> |
