A sprocket is a profiled wheel with teeth that meshes with a chain, track or other perforated or indented material. Sprockets are used in bicycles, motorcycles, cars, tracked vehicles,etc either to transmit rotary motion between two shafts where gears are unsuitable or to impart linear motion to a track, tape etc. Sprockets typically do not have a flange. Some sprockets used with timing belts to keep the timing belt centered. These have wide varied applications in cement plants, sugar mills, sponge iron plants, fertilizer plants, thermal power station, mineral plants and other manufacturing industries.