Designed on layered crushing theory, with overload hydraulic cavity cleaning system and lubrication system with refrigerants fully ensure the safety and stability during operation. With hydraulic push cylinder and lock cylinder to adjust the discharge opening width by hydraulic system. Invent and adopt the techniques of with concave holder & concave and crushing cone body & mantle after machining process to connect with cone surface to instead the anciently complicated techniques. Cone crusher is applicable to break various ores and rocks with medium or above hardness and widely used in metallurgical, architectural, road & railway building. It's ideal for secondary crusher.