The heart of the machine is the spindle drum with six spindles for simultaneous machining of several workpieces. The main spindles in the drum have a travel of up to 180 millimeters. The drum moves the workpieces very precisely and quickly to the tools. A trip for one of the six spindles to the next position takes only 0.65 seconds. In order to return to the starting position after processing in the six stations, the drum must be turned back by 300 degrees. The unit, which weighs over three tons, only needs a second to do this. The biggest challenge: safe energy supply for all six spindles.