The crawler mobile jaw crusher has the advantages of the structure is compact and simple, transmission parts such as eccentric shaft force small, due to the less vertical displacement of the dynamic jaw, has less phenomenon of over broken in processing materials, the wear of dynamic jaw’s jaw plate is small.The materials to be crushed can be hard, medium-hard and soft minerals whose compressive strength should be not more than 320 MPa. Our jaw crushers adopt V-shape inlet, resulting in higher crushing efficiency. Currently, these products become the preferred primary crushing equipment in the production of stone. They are widely used in many industries, such as mining, metallurgy, building material, railway, primary jaw crusher, water conservancy, chemicals, and so on. The belt and belt pulley are driven by a motor, and the movable jaw moves up and down via eccentric shaft. The angle between fixed jaw and movable jaw becomes smaller when the moving jaw runs down, then the materials are crushed into pieces. It becomes bigger when the movable jaw runs up. The movable jaw plate leaves the fixed jaw plate under the action of tension rod and spring , vsi sand maker, then the end products come out from the crushing cavity. It is machine which cylindrical drum with a wooden box which issued a patent in 1830, revolving at 350 revolutions per minute, cement mill price, on which hammers were attached. The machine was designed shatter any rock fed into the box. This machine never went into commercial production, but is considered as the forerunner to the hammer mill. The material for sampling Due to the composition of the material, hardness, moisture, clay content and other factors play a greater impact on the performance of jaw plate,we should check whether there is the other materials or the high hardness of the material before the material into the crushing chamber. If it is,foreign objects should be removed, and for high hardness materials,we should adjust crusher...