1. Higher crushing efficiency, has the function of fine crushing and rough grinding; 2. Increased rotor speed and higher crushing ratio, deep cavity rotor for larger capacity; 3. Simple structure and convenient installation and maintenance, low operation cost; 4. Optimized structure and energy-saving, more environmental protection; 5. Thin oil lubrication, various of protection measures to decrease fault, high degree of automation and long service life; 6. Good shape of final product,cubic shape, small fraction of elongated flake, suitable for aggregate shaping, manufactured sand.