Primary SUPERIOR Gyratory Crusher

The SUPERIOR Gyratory Crusher is a compressive style crusher for primary-stage applications. 

Its steep crushing chamber and long crushing surfaces provide exceptionally high capacity and long liner life. 

A gyratory crusher consists of a concave surface and a conical head; both surfaces are typically lined with manganese steel. The top of the shaft attached to the crushing cone is supported centrally in the bushings, and the bottom of the shaft is positioned in an eccentric bushing. The feed material is crushed between the fixed concave surface and a movable mantle. The bigger rock material is crushed against the mantle and the concave. The crushing action is caused by the closing of the gap between the moving mantle liner mounted on the central vertical shaft and the fixed concave liners mounted in the top shell of the crusher. The gap is opened and closed by an eccentric assembly in the bottom shell, which causes the central vertical shaft to gyrate. The vertical shaft is free to rotate about its own axis. 

Gyratory crushers are one of the main primary crusher types used in mines and quarries. The size designation of gyratory crushers is based on the size of the feed opening and the mantle diameter.