Grinder small in size, low power waste,high efficiency, smooth runninglow noise, reliable seal, no powder dust pollution. structural principle:rolling-contact bearings are assembled on the two end of the boby to support the main spindle,the main spindle and the turbine fastened on it,driven by the motor though the belt,rotate in a high speed.driven by the strong rotating airflow,the materials fed into the chamber are rubbed,impacted and regrinded fiercely between the vanes of the impeller and the grinding blocks. during this process,the turbine draws in volumes of air to cool the grinding blocks and convey fine power.the fineness of the powder also lies on the materials,the shape and size of the screen,the flux of material and airflow.this series of products have the advantages such as compact in structure,small in size,low power waste,high efficency,smooth running,low noise,reliable seal,no powder dust pollution,the grinder is small in size, low power waste,high efficienModel WDJ150 WDJ220 WDJ250 WDJ350 WDJ500 WDJ550 WDJ750 Handing capacity(kg/h) 5 70 15 150 20 200 25 500 30 1200 50 1500 60 2000 Power suply (kw) 2.2 3 4 5.5 5.5 7.5 11 15 18.5 22 22 30 37 45 Rotation speed(r/min) 7300 6000 6000 4500 3250 2930 2250 Weight(kg) 40 70 85 250 430 480 850 Fineness(um) 20 325