GF Mikron MILL S 600 U

The GF Mikron MILL S 600 U is the largest machine in GF Machining Solutions' speed-class 5-axis lineup, combining the S series' signature high-speed finishing capability with an 800 x 600 x 500 mm (31.5 x 23.6 x 19.7 in) work envelope that handles significantly larger parts than the S 200 U and S 400 U siblings. This is the machine for mold shops finishing larger 5-axis mold components, complex aerospace surfaces, and multi-feature parts that need both generous travel and exceptional surface quality.

Spindle options include 36,000 and 42,000 RPM Step-Tec units in HSK-E50. The 42,000 RPM variant at 13.5 kW and 8.8 Nm is pure finishing, while the 36,000 RPM with 33 kW and 21 Nm opens the door to semi-finishing and light roughing. The HSK-E50 taper provides better rigidity than the HSK-E40 of the S 400 U, supporting slightly larger tools and heavier cuts.

Rapid traverse hits 61 m/min (2,402 ipm), consistent across the S series. The trunnion table handles workpieces up to 120 kg (264 lb) with full 5-axis simultaneous capability. The 68-pocket standard tool magazine expands to 168 or even 220 pockets with HSK-A63 tooling options, providing extensive tool capacity for complex multi-operation 5-axis programs.

The Heidenhain TNC 7 or Siemens SINUMERIK ONE control delivers the 5-axis processing power needed for complex surface programs across the large work envelope. The polymer granite base and active thermal management maintain accuracy through extended 5-axis machining cycles, and System 3R automation integration supports pallet-based production.

New MILL S 600 U machines price between $420,000 and $580,000. The S 600 U competes with the Hermle C 400, DMG Mori DMU 80P, and Makino D500 in the larger precision 5-axis milling segment.