It imitates animal two jaw movement, it press, twist and grind the material in chamber through the fixed jaw plate and 1. Moveable jaw assembly adopts high quality casting steel, heavy eccentric shaft adopts forging steel processing, the machine with transcendental stability. 2. Comparing with the same size jaw crusher, we adopt more durable eccentric shaft bearing, so the bearing capacity is big. 3. While guarantee the performance improvement, we simplify the machine structure. Easy operation and maintenance, the downtime is greatly reduced.