We build a variety of specialized lathes. The AV interior unscrewing device is part of the TDIA 2000 / 10500 processing plant for drying cylinders. This plant was specifically developed for processing large cylinders with thin walls, for a workpiece length of 15.000 mm and a cylinder diameter of 2,000 mm. Seven turning tools simultaneously work on the cylinder's inner and outer surfaces. For this, we have installed a drive power of 150 kW.