The boring power comes from the head-stock of a universal lathe, so the spindle speed could be adjusted in a wide range and satisfactory end face scraping quality is obtained.

镗削动力头采用了普通车床的床头箱，主轴转速调节范围大，刮削端面性能良好。

A longitudinal hole extends through the spindle so that long bar stock can be fed through it.

主轴中有一个贯穿全长的通孔，长棒料可以通过该孔送料。