Our Friction Stir Welding Head with retractable pin has all the functions of our standard FSW head: force control & recording, cooling, protection of the spindle against loads and vibrations. Its difference: the retractable pin fills the FSW exit hole, beneficial for aerospace applications. With its HMI, our FSW head with retractable pin results in 100% quality control of welds: FSW force control, pin length control, head temperature & usage, warning pop-up and data recording.