GF Machining MIKRON MILL P 500

The GF Machining MIKRON MILL P 500 is a high-performance 3-axis machining center engineered for precision mold, die, and electrode production where surface finish quality and long-term dimensional stability are non-negotiable. The P designation signals Precision — this machine sits above the MILL E series on the accuracy axis and is purpose-built for shops whose revenue depends on sub-micron finish quality and repeatable geometric accuracy across production shifts.

The machine provides X/Y/Z travels of 500 x 450 x 350 mm (19.7 x 17.7 x 13.8 in) on a T-slot table measuring 600 x 500 mm (23.6 x 19.7 in) with a 300 kg (661 lb) load capacity. While the work envelope is compact by general machining standards, it covers the sweet spot for injection mold inserts, EDM electrodes, and precision die components.

The defining feature of the MILL P 500 is its 42,000 RPM Step-Tec spindle with HSK-E40 taper — one of the highest standard spindle speeds available in this machine class. At 42,000 RPM with micro-grain carbide ball-end mills in the 0.2–3 mm diameter range, the machine achieves surface finishes finer than Ra 0.1 µm on hardened tool steel, approaching optical quality without secondary polishing.

GF Intelligent Thermal Control (ITC) system continuously monitors temperature at multiple points throughout the machine structure and applies real-time compensation to maintain positioning accuracy within ±4 µm across extended machining cycles. This thermal stability holds through 8-hour finishing programs on hardened steel mold cavities where thermal drift would otherwise ruin part geometry.

The 30-pocket tool magazine (expandable to 60) supports automated job sequencing, and the machine is compatible with System 3R Delphin pallet systems for unattended electrode and insert production. The Fanuc 31iB control provides the look-ahead and jerk management required for smooth high-speed finishing tool paths. Pricing typically runs from $250,000 to $400,000 depending on configuration.