SP-MH permanent magnetic clamping blocks have 2 or 3 magnetic clamping sides, which are not switchable. They are used for clamping of finest pieces or badly magnetisable material, like high-alloyed chrome steels or carbid metal.
After processing, the block with the streched work piece can be taken compleatly from the machine for checking purposes. There are MH clamping blocks in the design standard and reinforced (with SEmagnets).
Main applications are grinding, measuring and wire-erosing.