A gyratory cone crusher includes a first and a second crushing shell defining a crushing gap. The first crushing shell is arranged to gyrate around a vertical axis, in order to crush material entering the crushing gap, and is vertically supported by a thrust bearing including first and second bearing plates defining a spherical sliding interface. One of the bearing plates has one or more cooling and/or lubricating grooves at the sliding interface, each groove defining a channel, extending from the center of the sliding interface to the periphery thereof. In order to obtain a uniform distribution of grooves, the cooling/lubricating grooves are in the form of one or more spirals extending from the center of the sliding interface to the periphery thereof. The disclosure further relates to a bearing plate and a kit of bearing plates involving such a bearing plate.

A gyratory crusher includes an inner and an outer crushing shell. The outer crushing shell has three regions along its axial length including: an inlet region that tapers radially inward from an uppermost first end; a crushing region that extends radially inward from a second lowermost end; and a radially innermost shoulder region that is positioned axially between the inlet and crushing regions. An angle of inclination of a radially inward facing surface at the inlet and shoulder regions and the axial length of the crushing surface are designed to optimize crushing capacity in addition maximizing reduction.

A gyratory crusher includes an inner and an outer crushing shell. The outer crushing shell has three regions along its axial length including: an inlet region that tapers radially inward from an uppermost first end; a crushing region that extends radially inward from a second lowermost end; and a radially innermost shoulder region that is positioned axially between the inlet and crushing regions. An angle of inclination of a radially inward facing surface at the inlet and shoulder regions and the axial length of the crushing surface are designed to optimize crushing capacity in addition maximizing reduction.

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.

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.

The invention relates to a gyratory crusher for comminuting material to be crushed, comprising a crusher housing, in which a crusher shaft is arranged, said shaft being held in the crusher housing so that it can tumble about a vertical axis. To accommodate the crusher shaft, the crusher is provided with a cross member which extends diametrically across the crusher housing and the cross member ends of which are connected to the crusher housing. According to the invention, the connection of the cross member ends to the crusher housing has at least one hydraulic tensioning device.

A gyratory crusher spider bushing assembly is positionable radially intermediate a topshell spider and a crusher main shaft. The assembly includes a main body to which is attached a radially inner annular wear collar. The collar is formed from a material having enhanced wear resistance than the material of main body.

A gyratory crusher spider bushing assembly is positionable radially intermediate a topshell spider and a crusher main shaft. The assembly includes a main body to which is attached a radially inner annular wear collar. The collar is formed from a material having enhanced wear resistance than the material of main body.

A feed distributor includes a rotatable chute mounted and suspended within a housing. Respective drive components for the rotatable chute are mounted within a working part zone defined by the housing. Such drive components are protected from dust and particulate contamination by a plurality of seal rings and/or an air feed assembly configured to create a positive pressure within the working part zone and a corresponding exhaust air flow at specific regions of the housing.

Cone crushers with differing main bearing styles therein being manufactured with interchangeable parts and with a common exterior configuration so that a roller bearing cone crusher could be replaced at a crushing site by a plain bearing cone crusher without the need for any modification to either the plain bearing crusher or the crushing site. Methods of manufacturing roller bearing cone crushers which have components therein which are interchangeable with components in a plain bearing cone crusher is also disclosed.