This type of crusher is used in areas of cement, building materials and mining industries for the materials with breaking strength no greater than 200 Mpa. The size of the feeding material may be up to 450-1000 mm and the average size at the discharge/=5-8mm, which is controlled effectively by multi-mode elastic adjusting mechanism. Unique design of opening the rear cover hydraulically-operated (hand operated) make quick replacing of the parts for easy maintenance. This feature has created the history of production of cement raw material in China by reducing 1/3 investment on the equipment and saving half of the power consumption as well as less maintenance cost. (Output from 40 tons to 500 tons).