The Longzhong cone crusher has been developed to crush high or medium hardness material, such as iron ore, copper ore, limestone, quartz, granite, and sand stones, ect. And The crusher is used in metallurgical, construction, road building, chemical, silicate Industries. The cone crusher has the advantage of reliable construction, high prod activity, easy adjustment and less cost in operation. The spring release system of crusher acts an overload protection system that allows tramp to pass through the crushing chamber without damage to the crusher, use dry oil, water, two kinds of sealed formation. Cone crusher made plaster stone and engine oil separated, assured reliable performance. The type of crushing chamber depend upon the size of feed and fineness of the crushed product. The standard type is applied to medium crushing, the medium type is applied to medium or fine crushing and the short head is applied to fine crushing.