| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dynamic pressure bearing device having high bearing performance and a durable life. <P>SOLUTION: The dynamic pressure bearing device 1 comprises, as major components, a shaft member 2 and a bearing member 7 having a cylindrical radial bearing face A facing the outer peripheral surface 2a of the shaft member 2. The bearing member 7 is injection-molded with an electrocast part 10 inserted therein, and the radial bearing face A is formed on the electrocast part 10. A thrust bearing face B is formed on the upper end surface 7b of the bearing member 7, and the shaft member 2 is supported in a thrust direction by the dynamic pressure action of a lubricating fluid produced in a clearance of a thrust bearing facing the thrust bearing face B. <P>COPYRIGHT: (C)2007,JPO&INPIT |
