A compact eccentric crusher includes a crusher jaw adjustment assembly for adjusting the size of the crushing gap between a crushing roller and a crusher jaw. The adjustment assembly includes a connection arm having a first end connected to a second end of the crusher jaw. A second end of the connection arm is connected to a slider that is mounted for movement along a slide rail. The adjustment assembly includes a drive unit operable to move the slider along the slide rail, resulting in corresponding movement of the connection arm and the second end of the crusher jaw. In one embodiment, the drive unit is a hydraulic cylinder having a cylinder rod connected to the slider. Upon an overload condition, the adjustment assembly allows the connection arm to move against the drive unit and the crusher jaw to move away from the crushing roller to adjust the crushing gap.

A compact eccentric crusher includes a system and method for moving a crusher jaw from a crushing position to a maintenance position. When the crusher jaw is in the crushing position, the first end of the crusher jaw is mounted to the crusher frame and the second end is movable to adjusting the size of the crushing gap between a crushing roller and the crusher jaw. When the crusher jaw is to be moved to the maintenance position, the second end of the crusher jaw is secured to the crusher frame and the first end of the crusher jaw pivots away from the crusher frame. To allow the pivoting movement of the first end of the crusher jaw, the connection between upper bearing assemblies and the crusher frame are removed and the upper bearing assemblies are movable with the first end of the crusher jaw.