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.

A grinding roll including a roll body having a cylindrical outer surface extending axially between a pair of opposite ends, and a side groove formed at each end of the roll body. The side groove includes a support shoulder recessed from the outer surface and/or from surfaces of the opposite ends of the roll body. The grinding roll includes an edge ring including a plurality of spaced receiving cavities, and a plurality of wear members each being received and retained in at least one of the receiving cavities. The wear members are positioned along the edge ring to define an edge of the grinding roll, and the edge ring is received within each side groove. The wear members are arranged to provide a wear protecting surface which is angled in relation to the outer surface of the roll body to prevent excessive build-up of material on the grinding roll.

A cone crusher head, system, and crusher including the cone crusher head and system. A conical mantle radially extends from an interference fit section and has a head diameter D.sub.ch. The conical mantle has a wear part support surface and a shaft support surface. The interference fit section has a nominal interference fit diameter D.sub.if. The conical mantle has an armpit groove for receiving a slip ring. The armpit groove is covered by the conical mantle with an armpit thickness L.sub.a. Fretting wear is reduced by dimensioning the crusher head so that a ratio of the head diameter D.sub.ch to the nominal interference fit diameter D.sub.if is most 2.5; and a ratio of the head diameter D.sub.ch to the armpit thickness L.sub.a is at least 10.5.

The present invention relates to a wear-resistant hard body that includes, at least partially, a high-strength, iron-based alloy, and preferably includes an external shell or sleeve made of another material. The hard body can be made by casting a molten iron-based alloy into the shell or the sleeve. The iron-based alloy can be an FeCrMoVC alloy. The shell or sleeve can be made of steel, copper, or a copper alloy. Methods for producing the wear-resistant hard body or for producing hard bodies or side-wear protection elements for a roller of a roller press are also disclosed. A roller for a roller press that includes at least one wear-resistant hardy body as described herein is also disclosed.

A roller press comprises a roller having a roller edge; an edge wear component provided adjacent to the roller edge, the edge wear component further comprising a wear portion, an anchor portion and a connection portion; an anchor mounting pocket configured to receive the anchor portion; a gap configured to receive autogenous or semi-autogenous crushed material, the gap provided within the roller adjacent to an inner face of the edge wear component, the gap running substantially parallel to an inner face of the edge wear component and the gap configured to receive autogenous or semi-autogenous crushed material; wherein the autogenous or semi-autogenous material is disposed within the gap and the anchor portion is disposed within the anchor mounting pocket to secure the edge wear component to the roller. Also disclosed, is a method of mounting an edge wear component to a roller using such an arrangement.

A device for the comminution of moisture-containing materials includes a housing that forms an impact chamber having a rotating striking means driven therein via a shaft. The housing includes a bottom plate, a cover, a wall connecting the bottom plate and the cover, an inlet opening and an outlet opening. A tub including at least one layer of plastic is arranged at least along the bottom plate. A wear plate is arranged on an other side of the layer of plastic. Objects of the invention include increasing the wear resistance of the device, realizing self-cleaning effects and enabling simple and safe cleaning, in particular, at a standstill.

An impact crusher hammer comprises a hammer shaft sleeve sleeved and mounted on a roll shaft of the impact crusher using a shaft hole. A cubic hammer body is connected above the hammer shaft sleeve through a journal. Both the front working surface and the top working surface of the hammer body are provided with two kinds of different sized elliptic cylindrical hard alloys that are evenly alternated. The elliptic cylindrical hard alloys are deeply embedded into and firmly welded with corresponding deep holes opened on the front working surface and the top working surface of the hammer body; a large area of hard welding rods is welded on two side surfaces of the hammer body corresponding to the front working surface and the top working surface of the hammer body.

The disclosure relates to a method for positioning a wear element relative to a supporting structure using a multi axis wear element positioning equipment having a wear element positioning unit. The method includes the steps of arranging a wear element positioning equipment in a replacement position relative to the supporting structure. The coordinates of an intersection point are defined where the virtual line intersects a surface of the supporting structure. The wear element positioning unit is aligned with the surface of the supporting structure at the intersection point such that a connecting surface of the wear element carried by the wear element positioning unit matches with a corresponding connecting surface of the supporting structure at the intersection point. The disclosure further relates to a system for positioning a wear element relative to a supporting structure.

A crusher having a protective liner, the protective liner including a plurality of lining segments which are arranged circumferentially along an a of the crusher. At least some of the segments have a trapezoidal shape with two bases of different lengths arranged parallel to the circumferential direction of the wall and two non-parallel legs connecting the bases. Further, at least some of the segments are arranged along the circumference of the wall such that long and short bases of adjacent segments alternate, and wherein at least some of the segments are allowed to vary in their axial position with respect to adjacent segments to compensate for tolerances in diameter of the wall of the crusher.

A grinder, including a motor, a machine shell, a rotor unit, and a stator unit. The rotor unit includes a wheel hub, a rotor disk fixed on the wheel hub, and at least 3 rounds of the rotor pins installed on the rotor disk. The stator unit includes a cover plate, a stator disk fixed on the cover plate, and at least 3 rounds of the stator pins installed on the stator disk. The cover plate is fixedly connected to the top surface of the machine shell, and the motor is fixedly connected to the bottom surface of the machine shell. The rotor unit is disposed in the machine shell and fixedly connected to the motor shaft via the wheel hub. The rotor pins and the stator pins each include a quadrangular steel billet and a screwed or non-screwed connecting rod disposed on the steel billet.