| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a dynamic pressure bearing device capable of removing foreign materials from a lubricating liquid without use of a filter and continuously supplying the clean lubricating liquid having no foreign materials into the clearance of the bearing. SOLUTION: A fixing member, a rotary member, and a bearing clearance in which a lubricant is introduced in between the fixing member and the rotary member, are formed. A high pressure fluid lubricating film is formed in the bearing clearance in correspondence with the rotation of the rotary member. The bearing device is constituted of the dynamic pressure bearing rotatably supporting the rotary member on the fixing member, a centrifugal separation chamber installed in the rotary member at a displaced position from the rotary center of the rotary member, an introduction flowing path introducing the lubricant with respect to the centrifugal separation chamber, a discharge passage extending from the centrifugal separation chamber to the radial outside of the rotary member, and the supplying passage supplying the lubricant from the centrifugal separation chamber to the bearing clearance of the dynamic pressure bearing.</p> |
