Jaw crusher has the advantages of large crushing ratio, uniform product size, simple structure, convenient maintenance, etc. Currently,it is the most widely used Crusher in the world. The Jaw Crusher can be divided into coarse crush and fine crush. The equipment can crush the material whose maximum compressive strength is 320Mpa. The structure of Jaw Crusher includes main frame, eccentric shaft, big sheave, flywheel, movable jaw, side guard plate, elbow plate, back plate of the elbow plate, adjusting screw, reset spring, fixed jaw plate and the movable jaw plate, etc. The cavity is formed by movable jaw plate and fixed jaw plate. Jaw crusher is widely used in mining, smelting, building material, roads, railways, water conservancy and chemical industry.