Average type beam drill is composed of base, inside and outside column, rocker arm, main spindle box and job.

普通型摇臂钻床由底座、内外立柱、摇臂、主轴箱及工作组成。

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Step Type Side Arranged Box Column;

阶梯式侧挂箱式立柱；

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Step Type Side Arranged Box Column;

阶梯式侧挂箱式立柱；

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