Tumbler sieve is a kind of evolving from artificial screen. The movement of circular motion and toss (upward parabolic movement) are fully embodied.By adjusting the Radial angle and Tangential angle to change the amplitude of circular motion and toss. Advanced technology and design for better performance in round screener! The motion of tumbler sieve is double pendulum movement that generated by ordinary vertical motor drives eccentric wheel. Basically the movement of a Tumbler Screening Machine can be compared to natural hand screening. For the control screening, fractionating and de-dusting of dry, powdered and granular products. Particularly suitable for high feed rates and multi-deck separations of fine, lightweight products which are difficult to screen.