... hammer mill, grass/straw cutter , straw bale crusher ,pellet machine and briquette machine, dryer and cooler, screener, mixer , biomass pellet boiler , ... heart part is best rotor ,which is consist of “ group gears” ,and the gears uses the high alloy anti-friction ... reasonable structure, low consumption and high working efficiency. 4.sawdust machine is very hot selling more than 1000 sets per year ...