Since the hammer hammer crusher is hinged on the rotor suspension pin, if the pin hole hammer position is incorrect, although the rotor has reached the static and dynamic balance, but the impact hammer and materials, will On the hammer pin, rotor disc reaction force is generated on the main shaft and main bearing material when the hammer blow, at the point of impact hammer will effect the impact P. If the hammer without collision balance calculation, the resulting reaction Py the hammer pin. Based on action and reaction are equal and opposite principles crusher specifications on the pin hole rotor disc also acts Py 'force. This force will be transmitted to the main shaft crusher classification, the force acting on the spindle by P 'indicates, P' reaction force P "will act on the central axis of the bore of the rotor .Py 'and P" on the rotor disc forming a disk rotation direction reverse couple, thus additionally consume energy. Acting on the main shaft P 'will also be transmitted to the bearing forces, so bearing loads increase, reduce bearing life. Hammer crusher shortcomings are: hammer wear faster and grate sieve crusher types, maintenance and a long time to find a balance, when crushing hard material materials, wear faster; when broken sticky material, easy to plug the sieve grate seam, To do this easy downtime (the moisture content of the material should not exceed 10%). Crushing hard objects, the hammer and liner wear and consume more metal material crusher wear parts need frequent replacement point with more maintenance time, crushing sticky material, the grate is easy to plug and lead to reduced production capacity. Crusher types, Taihang mine (certified), Liaoning crusher by Hui City Taihang Mining Machinery Factory. Weihui Taihang Mine Machinery Factory (www.thksjxc.com) is an industry leader in Henan Xinxiang, transportation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Taihang mine in leadership with the staff warmly welcome all inquiries negotiations to create the Taihang mine better future.