Abstract: An eccentric assembly for a crusher is disclosed. The eccentric assembly attaches both an eccentric and a counterweight to an underlying rotatable gear that supplies rotational force to the assembly. The eccentric includes an eccentric barrel and an eccentric flange, and the sides of the eccentric are disproportionately weighted. Similarly, the counterweight is disproportionately weighted in an inverse configuration to the eccentric. The eccentric and the counterweight are bolted, pinned, keyed, screwed, nailed, or otherwise fastened to an upper side of the gear. Additionally, the eccentric and the gear both have fluid channels disposed therein for transporting lubricant, such as oil, through the crusher. In particular, the gear may include internally bored fluid passages or external drains for receiving and dispelling the lubricant.

Abstract: A cone crusher is described including: a stationary main shaft; and a crushing head; wherein the ratio of the diameter of the main shaft to the diameter of the head is greater than 0.3.

Abstract: A gyratory crusher is provided that has a crusher head, an eccentric assembly connected to the crusher head, a bushing positioned between the eccentric assembly and the crusher head, a retaining member, and a plurality of fasteners. The retaining member has an opening and a plurality of holes. The retaining member is positioned adjacent to the eccentric assembly such that a portion of the eccentric assembly is within the opening. Each fastener extends through a respective hole to the crusher head. The retaining member is positioned adjacent to the crusher head and the eccentric assembly such that the retaining member is decoupled from the bushing. The cone crusher is preferably configured to crush rock, stone, ore or minerals. A method of making or retrofitting a crushing device such as, for example, a cone crusher or other gyratory crusher, is also provided.

Abstract: A gyratory crusher is provided that has a crusher head, an eccentric assembly connected to the crusher head, a bushing positioned between the eccentric assembly and the crusher head, a retaining member, and a plurality of fasteners. The retaining member has an opening and a plurality of holes. The retaining member is positioned adjacent to the eccentric assembly such that a portion of the eccentric assembly is within the opening. Each fastener extends through a respective hole to the crusher head. The retaining member is positioned adjacent to the crusher head and the eccentric assembly such that the retaining member is decoupled from the bushing. The cone crusher is preferably configured to crush rock, stone, ore or minerals. A method of making or retrofitting a crushing device such as, for example, a cone crusher or other gyratory crusher, is also provided.

Abstract: A conical rock crusher, such as a conical cone or gyratory crusher incorporating at least one oil deflection plate serving to redirect oil from exiting the crusher thereby to reducing oil loss.