Compact Designed Air Classifier is used to separate dry materials into different particle size fractions by their size, mass or shape. The Air Classifier is designed to modify a particle size distribution, remove the fines fraction of a material or the over size or coarse particles of a material or create two grades of material. The Air Classifier is offered in a compact design that facilitates ease of installation. Compact Designed Air Classifier has a rotor mounted on heavy duty antifriction bearings which are located outside the machine and protect them against ingress of dust.