ZT 13E(EL)数控(大通孔)立卧回转工作台是各类铣床、数控镗床和加工中心的重要附件。可分另以立式和水平式两种方式安装于主机工作台上。工作时，利用主机的控制系统或专门的控制系统，完成与主机相协调和各种必须的分度回转运动。工作台上除了可安装板、盘或其他形状较复杂的被加工零部件外，也可以利用主轴内大直径贯穿通孔安装气(液)动弹簧夹头或动力卡盘，对长轴类零部件进行加工，实现不等分、等分的连续的孔槽、曲直的加工，且达到较高的精度。
能够自锁 当蜗杆的导程角小于齿轮间的当量摩擦角时，若蜗杆为主动件，机构将自锁。这种蜗杆传动常用于起重安装中。
数控转台的传动平稳 蜗杆齿是连续的螺旋齿，与蜗轮的啮合是连续的，因而，传动平稳，噪声低。

ZT 13E( EL) NC rotary table with through hole in the spindle center is suitable for either horizontal or vertical position,it is a perfect accessory for NC miller and machine center.Used in combination with the control of NC
machine tool or an independent control for non-NC machine tool,continuous cutting work for board type,disk type,hole plate as well as other parts fixed between table and tailstock can be carried out precisely,especally with thethrough hole in the spindle center,hgdraulic(pneumatic )actuating coolect and chuck can be used to proceed long shaftype parts,