| 摘要 |
<p>Provided is a compact, gas-static bearing unit for more stably supporting a rotating body without contact using a simple structure, the rotating body rotating at high speed. The opposite ends (113, 12) of an air shaft unit (1) for supporting a pulley (2) without contact are affixed to two shaft holders (3A, 3B). Gas (f) is supplied from the radial bearing surface (1121) of the air shaft unit (1) to the radial bearing gap (60) between the radial bearing surface (1121) and the inner peripheral surface (221) of the pulley (2) to form a gas film within the radial bearing gap (60), and the gas (f) is discharged from the radial bearing gap (60) to the thrust bearing gaps (61a, 61b) between the thrust bearing surfaces (1132, 121) of the air shaft unit (1) and the boss end surfaces (241A, 241B) of the pulley (2), the thrust bearing gaps (61a, 61b) connecting to the radial bearing gap (60). A gas film is also formed within the thrust bearing gaps (61a, 61b) utilizing the discharge gas (f1).</p> |
