Starrag Starrag STC 1000 MT

The Starrag STC 1000 MT is a high-performance simultaneous 5/6-axis mill-turn machining center from Starrag’s STC series, engineered for the most demanding aerospace and power generation applications. The MT designation indicates integrated mill-turn capability, allowing the machine to perform both milling and turning operations on a single platform — eliminating the need for separate turning setups on turbine casings, blisks, and other rotation-symmetric aerospace components.

The STC 1000 MT is built around a 1,000 mm pallet size and delivers spindle power up to 120 kW (161 HP) through motor spindle options with HSK-A100 or HSK-A63 interfaces, reaching speeds up to 18,000 RPM. The machine achieves material removal rates exceeding 800 cm³/min in titanium — a benchmark figure that places it among the most productive 5-axis platforms available for aerospace structural and engine component machining. Axis travels are approximately 1,200 mm (47.2 in) in X, 1,100 mm (43.3 in) in Y, and 900 mm (35.4 in) in Z, with full simultaneous 5-axis interpolation through a combination of nodding head (1D) or A/C-axis fork head (2D) configurations.

The modular head concept is a distinguishing feature of the STC series: compact, stiff milling heads enable shorter tool lengths, which directly improves cutting stability and surface finish in deep-cavity aerospace work. Tool magazines range from 60 to 510 tools, supporting the extensive tooling requirements of complex aerospace programs. High-pressure coolant delivery up to 150 bar ensures effective chip evacuation and thermal management in titanium and Inconel roughing.

The Siemens SINUMERIK 840D sl control manages the complex interpolation and mill-turn transitions. Starrag’s application engineering team provides validated postprocessors and process packages for aerospace OEMs. New machines price between $1,800,000 and $3,000,000 depending on configuration and automation.