Abstract: A screen and rotor assembly is provided having a rotor of cylindrical shape having a plurality of toolholders in a preselected spaced pattern about an outer surface of the rotor, cutting tools connected to the plurality of toolholders and a screen positioned adjacent the rotor in close tolerance to the cutting tools. The screen has a plurality of transverse extending screen segments defining a plurality of apertures therebetween wherein the apertures form rows in a circumferential direction about the rotor. The cutting tools are centered relative to one or more of the apertures in an axial direction of the rotor. A path of the cutting tools aligned with respect to a row of the apertures extending in a circumferential direction.

Abstract: A cutting tool for a bolt-in toolholder assembly in a shredding device including a rotor and a bolt-in toolholder, comprises an upper surface and a lower surface, a first side and a second side extending between ends of the upper and lower surfaces, the upper, lower and first and second side surfaces defining a polygon shaped cutting tool, the cutting tool having a forward side and a rearward side, a cutting surface having by an upper portion and opposed side portions, the cutting surface disposed on at least one of the forward side and the rearward side, the cutting surface being offset from a well, the well having a flat inner surface for seating the cutting tool in a first dimension, the well being polygonal in shape, the well size determining a width of the cutting surface, a bolt-in aperture disposed in the well.