| 摘要 |
PURPOSE:To prolong the life of bearings by using a full type roller bearing as one which supports the part near a crank part, of bearings fixed to a frame. CONSTITUTION:A turning scroll 3 has a slide bearing 8 placed under the lower face of the scroll 3. A crank part 9b displaced from the center line of the axial part 9a of a crank shaft 9 is engaged with said slide bearing 8. The upper part of the axial part 9a of the crank shaft 9 is supported by a full-type roller bearing consisting of an external race, an internal race and rollers which are mounted on a frame 10 fit to a housing 1, and the lower part of the axial part 9a of the crank shaft 9 is supported by a slide bearing 12 fit to the frame 10. Since the number of rollers are increased, the load applied to each roller is reduced so that the rating life may be prolonged. |
