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Pure technology in the smallest spaces

The G350, G550 and G750 5-axis universal machining centers offer all customers in the machining sector practically limitless possibilities for milling parts made of the most diverse materials. Being a further development, the general structure is basically the same as in case of our G-modules: The axes X and Z are tool axes, the Y-axis and other axes (A-/B-axis) are part axes. This ensures optimized dynamics and rigidity while guaranteeing optimum flexibility and high efficiency at the same time.

Horizontal spindle location for maximum stability

Maximum stability is achieved through the horizontal spindle position. The machine bed, the Y-column and the cross slide have an intrinsically stiff welded design. The Y-column and the tilting rotary table housing have a cast iron design.


Increased precision output bearing and flexible connectivity

The CPU Series Units are available in nine sizes with gear ratios of 30, 50, 80, 100, 120 and 160:1 offering repeatable peak torques of from 9 to 1840 Nm.

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Maximum flexibility concerning part alignment

Three linear and two rotary axes permit 5-sided machining, as well as 5-axis simultaneous machining. The universal machining center offers an extremely large swivel range of 230° in the A'-axis and 360° in the B'-axis to ensure maximum flexibility when positioning the part.

Extensive basic equipment with expansion options

The basic equipment includes, among others, a motorized spindle, a tool magazine, a tool holder, internal cutting fluid supply, work area flushing, chip disposal and an integrated machine cooling unit. In case of the machine control system, you can choose between the market leaders Siemens (840D sl), Heidenhain (TNC 640) or Fanuc (30i-B). For tool loading and unloading, Harmonic Drive® Units of the CPU Series are used. By means of a system expansion with a compact additional tool magazine, the tool capacity of the basic machine is increased to up to 505 tools in case of HSK-A63 or 305 tools in case of HSK-A100. An optional pallet changer system furthermore allows for retooling or loading and unloading of the parts to the machine setup station during the machining operation. For even greater productivity, GROB offers individual automation solutions such as the GROB rotary pallet storage system PSS-R for up to 15 pallet storage positions with small footprint.