偏心钻头是钻头轴心线周围的钢体或胎体呈不对称分布，使钻头中心偏离轴心线的钻头。当钻头回转时,产生侧向力(离心力)切削孔壁，使孔径扩大。偏心钻头使用于延深套管下入深度或易缩径孔段的扩大。

    The eccentric drill bit is a drill bit which is asymmetrically distributed around the axis line of the drill bit, so that the drill bit center deviates from the center line. When the drill bit rotates, the lateral force (centrifugal force) is produced to cut the hole wall, and the aperture is enlarged. Eccentric bit used in Yanshen casing depth or expand the reducing diameter hole section.

    其他的尺寸和规格，我厂可以根据客户的需要订做。

    Our factory can be customized according to the needs of other sizes and specifications.