Vibro separators are circular gyrator screens used to separate solids from solids and liquid from solids. Vibro sifter consists of specially designed motor mounted vertically at the centre of the base plate of the screen. The screen is between feeding hopper and bowl. The material is fed on the centre of top screen. The undersize material passes rapidly through the screen during its travel to the periphery. The oversized material get continuously discharged through a tangential outlet. this is achieved by specially designed vibratory motor with eccentric top and bottom weights.