This series of circular-motion vibrating screen is specially designed to sieve some different sizes of stones. It also applies to coal dressing, ore dressing, building-material, chemical industry, etc as products gradation. YZ and YK series are the latest mode at home. It adopts block eccentric vibration exciter and tyre couple. And it makes a feature of advanced construction, strong vibrating force, low vibrating noise, easy maintenance, and it is sturdy and durable.