Abstract: A crushing ring of a crushing roll includes a base body with a through-opening, for connecting it to a shaft in a rotationally rigid fashion. At least one crushing tooth is in the form of a projection that is provided on the outer circumference of the base body and extends radially outward. A crushing cap encases the projection. The crushing cap includes a front wall section, a rear wall section and a head section that connects the two. A first pin-shaped connecting member detachably mounts the crushing cap on the projection. A second pin-shaped connecting member also detachably mounts the crushing cap on the projection. The second connecting member extends through the rear wall section of the crushing cap and is separably held in the projection.

Abstract: A crushing ring of a crushing roll includes a base body with a through-opening, for connecting it to a shaft in a rotationally rigid fashion. At least one crushing tooth is in the form of a projection that is provided on the outer circumference of the base body and extends radially outward. A crushing cap encases the projection. The crushing cap includes a front wall section, a rear wall section and a head section that connects the two. A first pin-shaped connecting member detachably mounts the crushing cap on the projection. A second pin-shaped connecting member also detachably mounts the crushing cap on the projection. The second connecting member extends through the rear wall section of the crushing cap and is separably held in the projection.

Abstract: A beater bar capable of being acted upon on one side for impactor rotors and insertable form-fittedly into circumferential slots of the rotors has a bend with an elongate cross-section, a bearing surface heldable counter to a centrifugal force of the rotating rotors against a bearing surface of the rotors, a supporting surface engageable with an undercut in the circumferential slot; a piece which holds the beater bar in engagement with the undercut in an circumferential slot, the bend being arcuate, and a center of rotation of a smaller radius of an arc of the bearing surfaces being at a considerable distance from a center of rotation of a larger radius of an arc of the supporting surface, so that the two centers of rotation run in a line extending approximately parallel to a beating surface, the bearing surfaces being at an obtuse angle to one another in a prolongation of the smaller arc.

Abstract: An impact mill has at least one rotor fitted with blow bars rotatably mounted in a mill housing and acting together with at least one impact apron, said at least one impact apron pivotably arranged in the mill housing via a pivot axle and infinitely adjustable by means of a linear drive, whereby an end of the at least one impact apron to that of the pivot axle is adjustable in relation to the rotor, and whereby the linear drive is mounted on a cover plate of the mill housing and is pivotably connected to the at least one impact apron at a distance from the pivot axis, wherein the linear drive is horizontally arranged approximately parallel to the cover plate of the mill housing and acts on a single lever passing through the cover plate of the mill housing, and wherein said single lever is firmly connected with the at least one impact apron and together with the at least one impact apron is pivotable about the pivot axle.