It is used to separate heavy foreign materials such as stones, glass and metal pieces or soil pieces in the grain with the help of screening method and air. The machine consists of a fixed chassis and vibrating body. The stone separator, designed considering the difference in density of stone and grain, separates the stone by directing the grain in the direction of gravity, in the opposite direction of gravity, with the help of vibration. Wheat is separated from the stones with the help of a vibrating sieve. In addition, dust is absorbed by the air aspiration provided from the ventilation line. Apart from flour and semolina factories, it is also used in all grain factories, vegetable oil factories, cocoa and coffee processing plants.