1. Advanced double pump oil lubrication system minimize the maintenance frequency 2. High precision roller bearing, smooth main unit running, and long service time 3. Hydraulic lift cap, easy and convenient replacement and maintenance 4. Over vibration alarm system 5. Special dustproof seal system, outside powder is prevented from entering oil mouth 6. Unique feeding method (change between central feeding and central feeding with cascade feeding make “rock on rock” and ‘rock on iron” possible, both crushing and shaping are achieved. 7. Particular material throw head design and reasonable material selection prolong the service time.