... looks,easy installation 3.low cost,high quality Huade double roll crusherOperating principle1.this series machine mainly composed by roller, compaction ... device, driving device and other parts.2.driving device, by two electric motor, drag the roller through v-belt transmit to ... ≤402--2015-4037122502PG-900×500≤403--4020-504414000 Huade double roll crusher