The high efficient hammermill for the coarse- and normal-grinding in feed mills, alcohol plants, food factories, edible oil mills and etc. Features: High capacity Water-drop shaped chamber with W-shaped secondary grinding structure and optimal hammer arrangement with adjustable screen-tip gap, high grinding efficiency. Stable performance Dynamically balanced high-precision rotor and reinforced wear-proof hammers, stable running; reversible rotor, long service life. Friendly operation Patented screen carriage with one-step screen hold-down device and fully-open sliding door, ease of labor and maintenance; CE standard design for human & machine safety.