PFW Impact Crusher Features,Technical,Appli ion, Crusher . 280-350. 250. 3120& 215;2650& 215;2660. PFW series Impact crusher are mostly used as secondary crusher and it well fits for crushing numerous medium and soft mineral and rock materials, such as limestone, feldspar, calcite, talc, barite, clay, tombar thite, kaolin, gypsum, and graphite, etc.