At their location in Linz, the steel specialist voestalpine weld drive axle casings for industrial vehicles with a chained CLOOS robot system. The complex system consists of four welding stations and seven robots in total. The axle casings are fully-automated moved from station to station by means of a shuttle system. At the first station two QIROX QRC 350 robots weld the root passes to both sides of the axle casings. At the second station two robots weld the cover passes to both sides of the axle casings. At the third station a welding robot welds the hood to the axle casing. At the fourth station the robot welds the mounting ring to the axle casing. After these steps the shuttle system moves the completely welded axle case fully-automated to the next production station.