A machine used in flour milling that cleans wheat and sorts the resulting particles by size. After initial cleaning removes chaff, stones, and foreign seeds, the millerator refines the separation, directing different particle sizes to appropriate grinding or sifting stages. Efficient cleaning and sizing are essential: contaminants affect food safety, while uniform particle size ensures consistent milling, even flour quality, and optimal extraction rates. Modern mills integrate such equipment into automated lines with aspiration and magnetic separation. Though the term is not universal, it describes the vital preparatory stage that determines much of a mill’s final flour quality.