jaw crusher is mainly applicable to various ores and big block's primary and second crushing and the largest compression resistance of the material is 320MPa. Moreover, the cone crusher is also widely used in stone mining, metallurgy industry, building material, highway, railway, and chemical industry and so on. Nowadays, the jaw crusher has been the necessary equipment in a variety of production lines. Working principle of jaw crusher: The motor transmits power through belt, drives the moving jaw to do periodic motion towards the fixed jaw by the eccentric shaft. The angle between toggle plate and moving jaw plate increases when moving jaw moves. So the moving jaw moves towards the fixed jaw. The stuff will be crushed in this process. The angle between toggle plate and moving jaw decreases when moving jaw moves down, the moving jaw moves leaves fixed jaw by pulling rod and spring, the final crushed stuff will be discharged from the outlet. Advantages of jaw crusher: 1. High productivity; 2. Low build in height; 3. Short toggle; 4. Sharp nip angle; 5. Long life; 6. Cost effective; 7. Easy operation; 8. Simply maintenance;