[Main features] : The processing does not require power supply, so there is no thermal deformation phenomenon, which can effectively ensure the processing accuracy. It also avoids the danger of workpiece falling off due to the sudden power failure of the electromagnetic system and the loss of magnetic force caused by line damage. [Processing applicable] : Used for processing magnetic permeability workpieces; It is twice the suction force of the ordinary disk, which can ensure that the workpiece is firmly installed and will not be scratched or strained.