What's the main structure of a jaw crusher ?

The frame of jaw crusher is heavily loaded during work: thus it's of high strength and rigidity. The frame is welded ( cast-steel for the small jaw crusher ). The fixed jaw is installed at the front of the frame by a high-strength bolt. The up and down side-plates are installed at the left and right side of the frame.

The main structure of jaw crusher contains: fixed jaw plate, side plate (up), movable jaw plate, jaw, toggle plate, tension device (spring and tension rod), side plate (down), pulley, bearing, eccentric shaft, fly wheel and so on.