The series crusher is QunYing company new product that has been developed through many years of technical development and absorbed foreign advanced crusher advantage widely used in the industries of metallurgy, building material, stone and chemical industries, it is suitable for crushing all kinds of ores and rocks with hardness of medium or above, the most widely used in many mine and macadam curt around the world which is operation reliable and good performance. The user may choose different type of chamber upon different partical size requirement. This machine adopts dry oil seal so as to prevent the drainage system from being blocked and avoid the defect of easy mix of water and oil.