The advantage of machining large, heavy and unwieldy components on a gantry type machine is that the component mass has no effect on the machining process. Droop+Rein created the G/GF series for just such difficult tasks. The gantry machines reliably prevent dynamic loss when supporting and accelerating these high loads. To cope with its demanding machining tasks, the G/GF series boasts many technical highlights, for example, hydrostatic guides on all the linear axes, the thermo-symmetrical construction of the ram-type milling unit and the integral C-axis. Automatic milling head, spindle and tool changing are available by the integration of standard, well proven, expansion modules.