The BCM classifier mill is a mill for the dry powder milling of different products. It has long life bearing housings and drives with power reserves. In its construction, the classifyer mill, is an impact crusher mill with integrated classifier. The milling disc is equipped with milling stones made out of wear resistant material. The product is being crushed by the milling stones and an impact ring. The integrated dynamical sifter, or classifier, is placed before the product output. The sifter separates the coarse particles from the product flow and return these to the milling process. The particle size depend on sifter speed and sifter design.