MZLH 42 used wood pellet production line: 1,for biomass fuel 2,ring die pellet mill 3, ... drive motor 4,6mm,8mm,10mm,etc used wood pellet production line: Main structure and working principle: 1,High efficient gear drive ... adjusting control by frequency conversion8, Motor and gear shaft: new type falk flexible coupling, assemble and unassembled conveniently , reliable drive, high ...