| 摘要 |
The present invention provides a fluid dynamic bearing capable of reducing the abrasion caused by the friction between a fixed member and a rotator because it comprises: the fixed member installed at the side of a stator; the rotator installed to face the fixed member through the fluid to generate dynamic pressure action to the rotator; and clad which is a composite welding metal in which the hardness is greater than a base material on the base material in order for the fixed member or the rotator to have the structure in which a high hardness metal layer is coated on the facing surface. |
