The upper Gantry GTF line is characterized by great versatility. Thanks to its modular structure, and taking advantage of a combination of components conveniently selected according to weight, stiffness and cost requirements, the GTF range becomes an ideal solution to fulfill all Customers’ demands. The sizing of its structures in accordance with the thermo-symmetry concept,perfectly matches with the extreme dynamic linear axes. Rack & pinions driven by double motors and variable preload grant for total absence of backlash. The FIDIA integrated technology system, including both drives, and numerical control, offers the most complete and performing equipment, granting the customer with both quality and reliability of one-single-source supplier. With any of FIDIA’s heads, the A and C axes performs high dynamic continuous interpolation as well as the 3+2 positioning mode. When using 5 axes machining, the rotative axes (A,C or both) can be stiffly clamped by means of powerful hydraulic brakes, exploiting the maximum torque of the spindle. The axes cinematic chain is provided with lifetime automatic backlash recovery and is able to perform 0.001° resolution positioning.