Osaw agro industries pvt. Ltd manufactures high performance cleaning and grading machine, sigma. This is particularly manufactured for pre-cleaning, malting barley grading, intervention standard cleaning, and industrial cleaning of cereals and hard seeds. It can also clean cereal seeds. As this machine is based on centrifugal principle, this is suitable for cleaning humid and oleaginous seeds. This machine is easy to use and install. It acquires small space form installation and suitable for any plant. The rotary screen action around the central axis resists vibration. The machines comes with following features: