STARRAG NB 251 HORIZONTAL MACHINING CENTER

Technical Description

The Starrag NB 251 Horizontal Machining Center is a high-performance, five-axis CNC machine engineered for the precision machining of complex aerospace and turbine components, particularly blisks and integrally bladed rotors. Featuring an X-axis travel of 27.559 inches (700 mm), Y-axis travel of 15.748 inches (400 mm), and Z-axis travel of 15.748 inches (400 mm), the NB 251 delivers robust work envelope capabilities for medium-sized workpieces. The machine is powered by a 37.5 horsepower (28 kW) spindle, capable of reaching up to 18,000 RPM, enabling high-speed cutting and efficient material removal rates. Its tool changer provides a capacity of 62 tools, supporting rapid tool changes and minimizing downtime during complex operations. The spindle utilizes an HSK-A63 (A80) taper, ensuring high rigidity and accuracy for demanding machining tasks. Controlled by a SIEMENS 840D CNC system, the NB 251 offers advanced programming flexibility, dynamic axis control, and seamless integration with modern manufacturing environments. Designed for single-setup machining, the NB 251 excels in roughing and finishing operations on titanium, nickel alloys, and other high-strength materials, delivering exceptional surface finishes and tight tolerances. Its inclined B-axis configuration allows for optimal tool positioning and dynamic five-axis movement, making it ideal for intricate geometries and complex contours. The NB 251 is a reliable solution for manufacturers seeking high productivity, precision, and versatility in the machining of critical components.