The VTC 100-4 Vertical Turning Machine is a 4-axis machine. The overhead mainspindle is located in the centre of its upper section. Below it is a tailstock. The workpieces (shafts) are clamped between mainspindle and tailstock and supported by a steady. The machining operations are carried out by two turrets with 12 tool stations each. One of the stations accommodates a workpiece gripper that conveys the workpiece into and out of the vertical turning machine. This leaves 11 tools for the machining of the workpiece. These can be turning tools or driven tools. To the left and right of the machining area are close-looped conveyor belts that store raw-parts and finish-machined components.