Abstract: A crusher feed hopper wear protection cassette to mount at a wall of a crusher hopper. The cassette includes a mount member to contact and releasably mount the cassette at a region of the feed hopper and a support face to mount at least one wear liner orientated to be facing the interior region of the hopper chamber.

Abstract: A crusher wear resistant liner for positioning at a crusher bottom shell includes a plurality of modular wear resistant plates mountable at an inside surface of the bottom shell and positioned side-by-side to surround and protect the bottom shell interior. To prevent independent dislodgement of each plate and liner, respective inter-engaging formations are provided at each plate to contact at least one adjacent plate of the assembly to arrest any unintentional downward movement in the event that the primary fixings become ineffective.

Abstract: A gyratory crusher annular bearing is mountable about an upper region of a gyratory crusher main shaft. The bearing has a bearing surface for positioning around an outer surface of the main shaft and a mounting surface for positioning towards a frame part of the gyratory crusher. The annular bearing is maintained in a fixed position relative to the rotatably mounted main shaft by at least one mounting formation.

Abstract: A crusher feed hopper hatch includes a door and a frame. The frame has a suitable hinge and lock mounts into which pivoting bodies are mounted and capable of functioning as either hinge or lock bodies. The door is configurable for alternate attachment to either side of the frame to be either right or left-hand opening.

Abstract: A crusher feed hopper includes a plurality of guide lugs for correct alignment and mounting of additional components, such as a feed distributor and hopper wall protection insert. The guide lugs are positioned at an uppermost region of the hopper and mate with corresponding regions of the detachable hopper components to avoid incorrect mounting.

Abstract: A gyratory crusher crushing head, removably mounted a crushing shell, includes a circumferential groove is formed in an outer facing surface of the crushing head. The groove is positioned towards a second lower end at the outward facing surface relative to an axial length of the crushing head. The groove and its relative axial positioning minimizes the stress concentrations at the crushing head resulting from forces tangential to the outward facing surface.

Abstract: A gyratory crusher frame part and a gyratory crusher include a topshell and spider assembly configured to minimize stress concentrations. An annular flange is formed at the junction between a lower region of each spider arm and an upper region of the topshell. Optimization of loading force transfer and a reduction in stress concentration is achieved by positioning the spider arms radially inward relative to an outer circumferential perimeter of the flange.

Abstract: A gyratory crusher frame part includes a topshell mountable on a bottom shell, the topshell having an annular wall extending around a longitudinal axis. A spider having a plurality of arms extending radially outward from a cap is positioned at the longitudinal axis. Each arm has a first portion extending in a radially outward direction from the cap and a second portion extending in an axial direction from an outer region of the first portion. An annular flange is positioned between the second portion of each arm and the annular wall. The annular wall is defined between an outward and inward facing surface of the annular wall. A section of the wall neighbouring the flange includes a concave section at the outward facing surface. A first half of the concave section closest to the flange is a substantially uniform curve extending continuously in the circumferential direction around the longitudinal axis.