... Mill Suspension fork structure Automatic protection function GDM Series Sample Grinding MillThe GDM series grinding mill uses a suspension fork ... structure (GDM-1: 6 press springs, 8 pullsprings; GDM-4: 8 press springs,8 ... )×4Vessel materialTungsten carbide, Chrome-steel, Manganese-steelPower supplyAC380V±10%/50Hz/3-phase+earthRotate speed1400r/min960r/min910/1400r/min750- ...