INDEX G250

The INDEX G250 is a high-precision mill-turn machine designed for the complete machining of complex, medium-sized rotational components. Combining powerful turning with full 5-axis milling capability, the G250 addresses demanding applications in aerospace, energy, and medical device manufacturing where multiple setups traditionally inflate cycle times and introduce cumulative positional error.

At the heart of the G250 is a B-axis milling spindle capable of full continuous interpolation, allowing angled holes, compound contours, and off-center features to be cut without re-fixturing. The main spindle delivers high torque at low RPM for heavy turning passes, while a synchronous sub-spindle enables backside operations to be completed in the same cycle. This combination reduces part handling, shortens overall lead time, and virtually eliminates the tolerance stack-up associated with multi-machine routings.

INDEX engineers the G250 around a thermally stable cast iron base with integrated linear guideways and precision ballscrews. The machine's tool magazine holds up to 80 tools as standard, supporting complex programs with extensive tool variety. A high-pressure coolant system (optional up to 120 bar) assists chip evacuation and extends tool life in difficult-to-machine alloys such as titanium and Inconel.

The G250 runs on INDEX's iXpanel touchscreen interface atop a FANUC or Siemens platform, and integrates with INDEX's Virtual Machine simulation software for offline program validation before cutting the first chip. For manufacturers seeking to consolidate turning, milling, drilling, and thread whirling into a single process, the G250 represents a highly capable platform.