Profile: Jiangsu Zhongbo Heavy Machinery Co. Ltd. is a manufacturer of crushing and powder making equipments. We are ISO 9001:2000 certified. Our products include jaw crusher, impact crusher, cone crusher, sand making machine, impact fine crusher, ball mill, ultra fine mill, ultra superfine mill and spiral separator. Jaw crusher is drived by motor through belt and belt wheels, which makes the movable jaw plate up and down through eccentric shaft. When the movable jaw comes down, the angle between the fixed jaw plate and the movable jaw plate gets smaller, then the materials can be crushed. When the movable jaw plate rises, the angle becomes larger and the movable jaw plate leaves the fixed jaw plate with the function of tie bar and spring. At the same time the final products are discharged from the lower outlet of the crushing chamber.