... .4. Low investment cost, easy management.Structure and working principle:Efficient crushing mill consists mainly of frame, rotor, hammers and grizzly ... be crushed not more than 5%..The performance parameters of efficient crushing-type mills:ModelPC4008-75PC4012-90PC4015-132Diameter of the rotor ... , any changes are subject to the products.More pictures: SBM Efficient crushing-type mill