China Stone Crusher Machinery manufacturers Description Hammer Crusher is a machine that uses a hammer to strike the material to be crushed, it crushes the material through the impact between the hammer head and the crushing plate during use, and it has good toughness and wear resistance. The compressive strength of the crushed material should not exceed 100MPa, and the moisture content should be less than 15%. Common crushed materials include hard materials such as coal, gypsum, and ceramic tiles, as well as wood and paper with fibrous structures.http://www.xintumachines.com/s....tone-crusher-machine