The Natec PreGrinder is designed to grind cheese and butter blocks / barrels into fist-sized pieces. The PreGrinder is able to grind blocks and barrel goods with a temperature up to -20°C. As a result of this shredding process the grinder beneath is able to continuously grind all these products. There is a signal exchange between PreGrinder and grinder to make sure that the grinder always has the correct filling level. The lifting device is controlled by this system, too.