| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dynamic pressure type sintered oil retaining bearing unit having reduced manufacturing cost. <P>SOLUTION: A shaft 2 has a flat shaft end face 2c, and a thrust washer 12a opposed to the shaft end face 2c has a spiral dynamic pressure groove 12c formed in a surface 12a1. The thrust washer 12a is formed of a soft metal material, and the dynamic pressure groove 12c is formed by press-forming the thrust washer 12a. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
