how a jaw crusher works and what it is used forjaw crushers, thier operation and uses. . Jaw Crushers, How Do They Work? . A Jaw Crusher is one of the main types of primary crushers in a mine or ore.how to operate jaw crusher,The Working Principle of Jaw CrusherApr 1, 2008 . ina This jaw crusher machine uses motor as its power. Through the motor's wheels, the eccentric shaft is driven by the.