Knife ring cutter

摘要

There is provided a knife-ring remover for chips having a knife ring arranged rigidly on an axis. The knife ring has a collar of knives and first and second bearing rings concentric to the axis. A housing, that partly encloses the knife ring, has a rear wall, an essentially cylindrical sheath and a door disposed opposite to the rear wall for driving out a rotor. The rotor has a pair of front walls that bear a plurality of blades. The rotor is mounted in a rotatable manner on the axis. First and second abrasion sealing rings are disposed in the regions of the first and second bearing rings. Each abrasion sealing ring has an inner axial edge that lies at least approximately in the same plane perpendicular to the axis as an axial inner edge of the corresponding bearing ring. One abrasion sealing ring is connected to the door and the other is attached directly or indirectly to the rear wall.