The gantry mounted rack-style tool changer mounts high above the cutting deck and allows for extra long tools to be loaded automatically.
Many machines struggle to process thick materials because they simply cannot lift tools high enough to clear thr material. To make matters worse, some imported machines carry a rack of tools underneath the gantry which further reduces the maximum material thickness possible.
In conjunction with the super high Z travel on ART machines, this allows material of 200mm thickness or more to be processed easily.