A gyratory crusher spider arm shield for releasable mounting to a spider arm is mounted in a position above and around the spider arm via locating feet and is maintained in the position by a fixating ring extending circumferentially around the spider arms and positioned at and above a perimeter of the spider.

A gyratory crusher spider wall shield for releasable mounting to a radially inward facing face of a spider positioned on top of a shell of a gyratory crusher includes a primary protection wall positionable over the inward face of the spider and a rear wall attachable to an outer annular fixating ring positionable axially intermediate a material input hopper and the spider.

A gyratory crusher spider wall shield for releasable mounting to a radially inward facing face of a spider positioned on top of a shell of a gyratory crusher includes a primary protection wall positionable over the inward face of the spider and a rear wall attachable to an outer annular fixating ring positionable axially intermediate a material input hopper and the spider.

A gyratory crusher and a spider bushing assembly for supporting a spider bushing within the central hub of a gyratory crusher. The spider bushing assembly includes a spider bushing and a means for adjusting the distance between the outer flange of the spider bushing and a support shoulder formed within the central hub of the spider. The means for adjusting allows the position of the spider bushing within the internal bore of the central hub to change while maintaining an interference fit as a result of wear following use of the gyratory crusher. In one embodiment, one or more annular shims are positioned between the bearing support shoulder of the central hub and the outer flange of the spider bushing. Upon wear, one or more of the shims can be removed to improve the interference fit between the spider bushing and the internal bore formed within the central hub.

A gyratory crusher and a spider bushing assembly for supporting a spider bushing within the central hub of a gyratory crusher. The spider bushing assembly includes a spider bushing and a means for adjusting the distance between the outer flange of the spider bushing and a support shoulder formed within the central hub of the spider. The means for adjusting allows the position of the spider bushing within the internal bore of the central hub to change while maintaining an interference fit as a result of wear following use of the gyratory crusher. In one embodiment, one or more annular shims are positioned between the bearing support shoulder of the central hub and the outer flange of the spider bushing. Upon wear, one or more of the shims can be removed to improve the interference fit between the spider bushing and the internal bore formed within the central hub.

A gyratory crusher main shaft sleeve for friction fitting over an uppermost tapered end of a crusher main shaft includes an elongate axial wall extending from an upper end to a lower end and having external and internal facing surfaces aligned transverse so as to taper inwardly towards a central axis. The tapering is defined by a sleeve tapering angle formed between the internal facing surface and an imaginary axis parallel to the central axis. The internal surface of the sleeve has a section in the axial direction with an upper end and a lower end. The sleeve section, from the upper end to the lower end, has a section tapering angle formed between the internal surface and the imaginary axis. The section tapering angle is different from the sleeve angle defining the tapering of the sleeve from the sleeve upper end to the section upper end.

A gyratory crusher main shaft sleeve for friction fitting over an uppermost tapered end of a crusher main shaft includes an elongate axial wall extending from an upper end to a lower end and having external and internal facing surfaces aligned transverse so as to taper inwardly towards a central axis. The tapering is defined by a sleeve tapering angle formed between the internal facing surface and an imaginary axis parallel to the central axis. The internal surface of the sleeve has a section in the axial direction with an upper end and a lower end. The sleeve section, from the upper end to the lower end, has a section tapering angle formed between the internal surface and the imaginary axis. The section tapering angle is different from the sleeve angle defining the tapering of the sleeve from the sleeve upper end to the section upper end.

Inertia cone crusher for crushing materials includes a body with an outer cone and an inner cone arranged inside, on whose drive shaft an unbalance weight is provided with the aid of a slide bushing and connected via a transmission disk coupling to a combined moving dynamic assembly comprising a counterbalance weight and a counterbalance weight slide bushing, the assembly connected to a gear transmission and a motor, and has an improved plain journal bearing. The plain bearing is installed between the flange and the counterbalance weight, bearing the load from the crusher's moving part, and includes a base ring and an upper ring, the base ring having a spherical bottom surface and its mating recess on the flange's top surface. The bearing enables the moving dynamic assembly's rotation around the axis, using a hydrodynamic sliding mode, with radial oil slots additionally provided on top surface of the base ring.

A crusher device such as a cone or gyratory crusher is disclosed. The crusher device includes a shaft defining a first direction parallel to its length. The shaft includes an upper shaft end, a crusher head, and an overload safety device that couples the crusher head to the upper shaft end. The overload safety device includes a biasing device configured to bias the crusher head away from the upper shaft end in the first direction. The overload safety device is configured to permit displacement of the crusher head along the first direction relative to the shaft in response to a force acting on the crusher head in the first direction.

A crusher device such as a cone or gyratory crusher is disclosed. The crusher device includes a shaft defining a first direction parallel to its length. The shaft includes an upper shaft end, a crusher head, and an overload safety device that couples the crusher head to the upper shaft end. The overload safety device includes a biasing device configured to bias the crusher head away from the upper shaft end in the first direction. The overload safety device is configured to permit displacement of the crusher head along the first direction relative to the shaft in response to a force acting on the crusher head in the first direction.