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A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism. The jaws are farther apart at the top than at the bottom, forming a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until[http://www.break-day.com/en/jaw-crusher.html Jaw Crusher] small enough to escape from the bottom opening. The movement of the jaw can be quite small, since complete crushing is not performed in one stroke.
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