The combination of these heads with CNC machine tools allows for automatic diameter change using servo motors with an accuracy of ±0.002mm. These also support live and high speed machining (spindle speeds of up to 8000rpm) as well as active tool wear compensation with ergonomically placed sensor tools. The five-axis machining centers which heavily depend on these components enable greatly reduced supervision when drilling complex geometries such as angled holes in turbine casings lower.