Structure Feature: 1. High precision- balls with 0.005mm defect can be sorted out in proper operation 2. Totally enclosed design- prevent dust effecting precision of rollers 3. Moistureproof design- with fan in the equipment 4. Big loaded container- can load 300-350KGS steel ball 5. High efficiency- 4 group of rollers work together 6. With display- can operation at anytime 7. With sensors- warning when without materials Main Technical Parameter Ball size φ3.0mm--φ10mm Precision ≤0.001mm Roller effective classification length 460mm Diameter of roller φ35mm Velocity modulation range of the roller 0-260turn/minute material input capacity 300-350kg Motor total power 120W Pulling force of vibration electromagnet ≥2.7KN Source of electricity 220V/50Hz Overall size (L × W × H) 1200x705x1560mm Net weight 380kg