滚轮

In this paper,a new small-sized bit is introduced.The bit is mainly composed of a biassed polyconic cutter,a cylindric roller and two bit legs.

文章介绍了种新型小尺寸钻头，它主要由个偏置的多锥形牙个圆柱形滚及两个牙掌组成。

With greater axial and radial load rating capacity, good replaceability of components. The shaft can be adjusted through external hexogan then to adjust the axial part dimension.

轴承径向轴向的承载能都比较大，各配件可替换性强。轴承通过节偏心外六角来轴位置进而达到侧滚轴向尺寸的目的。