在使用小型CBN砂轮的ID磨削中，为了充分利用CBN技术，需要高主轴转速。如今，配备有主动磁力轴承的高频主轴已经面世。主轴内部的传感器通过磁力连续检测和控制转子在径向和轴向的位置。本文介绍了这种新主轴技术在静态和动态性能以及机械跳动方面的初步结果。此外，还将指出一种控制ID的策略- 利用磁力使转子位移的磨削过程。根据转子位移的方法，可以执行砂轮的定义进给运动。通过以相反的方向倾斜转子，可以在线补偿套筒的偏转。此外，轴向短冲程振荡也是可能的。

IN ID-GRINDING WITH SMALL CBN-WHEELS HIGH SPINDLE SPEEDS ARE NECESSARY TO TAKE FULL ADVANTAGE OF THE CBN TECHNOLOGY. TODAY HIGH-FREQUENCY SPINDLES EQUIPPED WITH ACTIVE MAGNETIC BEARINGS ARE AVAILABLE. SENSORS INSIDE THE SPINDLE CONTINUOUSLY DETECT AND CONTROL THE ROTOR POSITION IN RADIAL AND AXIAL DIRECTION BY MAGNETIC FORCES. THE PAPER PRESENTS FIRST RESULTS WITH THIS NEW SPINDLE TECHNOLOGY CONCERNING THE STATIC AND DYNAMIC BEHAVIOR AND THE MECHANICAL RUN-OUT. FURTHER, A STRATEGY WILL BE POINTED OUT TO CONTROL THE ID-GRINDING PROCESS USING THE DISPLACEMENT OF THE ROTOR BY MAGNETIC FORCES. DEPENDING ON THE METHOD OF ROTOR DISPLACEMENT, A DEFINED INFEED MOTION OF THE GRINDING WHEEL CAN BE PERFORMED. DEFLECTION OF THE QUILL CAN BE COMPENSATED ON-LINE BY INCLINING THE ROTOR IN THE CONTRARY SENSE. IN ADDITION, A SHORT-STROKE OSCILLATION IN AXIAL DIRECTION IS POSSIBLE.