| 摘要 |
PURPOSE:To increase thrust rigidity and floating power, and reduce a torque loss by using gases as a lubricant for a radial bearing and oils of high viscosity as a lubricant for a thrust bearing. CONSTITUTION:A thrust pad 3 is fixed to the end of a hollow cylindrical housing 2 and a rotary shaft 1 is so provided in a cylindrical hole formed by the housing 2 and the thrust pad 3 that it can rotate. Spiral grooves 4a are formed on a carrier 4 as related to the rotary shaft 1 of the thrust pad 3. Herring ball grooves 5 are formed on the rotary shaft 1. And space between the rotary shaft 1 and the housing 2 is filled with air as a radial dynamic pressure fluid 6 and space between the thrust pad 3 and the rotary shaft 1 is filled with grease as a thrust dynamic pressure fluid 7. |
