According to the company, the angle measuring modules from Heidenhain are an alternative to air-bearing axes in terms of reproducible guidance accuracy. According to the supplier, the devices have a high measuring accuracy as well as a bearing with very high guiding accuracy and rigidity. The low and uniform friction torque enables uniform rotary movements. The combination with a special torque motor allows for uniform motion control. Neither interfering cogging torques nor lateral forces affect the guide accuracy of the bearing. The integration of the angle measuring module and motor components also results in a compact system with a low overall height and high rigidity. The devices are optimized in particular for the requirements of metrology applications - with high resolution and repeat accuracy even at varying operating temperatures. The angle measurement modules with integrated drive reduce assembly and adjustment work. Simple mechanical interfaces eliminate all critical assembly processes.