MZLH 42 wood forming machine: 1,for biomass fuel 2,ring die pellet mill 3, ... motor 4,6mm,8mm,10mm,etc pellets MZLH 42 wood forming machine: Main structure and working principle: 1,High efficient gear drive, insure ... conveniently and quickly.7, feeder: variable pitch anti coking arch structure . Speed adjusting control by frequency conversion8, Motor and gear shaft ...