Jaw crusher are generally pendulum and Jane put two, mainly for the coarse, broken. In recent years, the pendulum again for fine jaw crusher and breakage of high strength, high hardness micro carbon ferrochrome China strong crusher. As is known to all, jaw crusher main problem is lower jaw plate life. Therefore, the company developed a special materials, to improve the start-up process, to avoid overloading damage, but also mainframes adopts hydraulic coupling, improve equipment performance.