Abstract: A rotary material reduction tool includes a drum, a collar, and a hammer. The drum has an outer surface extending about a rotational axis of the drum. The drum has a first opening defined in the outer surface of the drum. The collar is received in the first opening. A first portion of the collar extends into the drum and a flange of the collar extends beyond the first opening and along the outer surface of the drum. The hammer extends through the collar and into the drum. The hammer has an exposed portion. The flange of the collar and the outer surface of the drum are welded together.

Abstract: A shredder includes a shredder box and a shredder rotor positioned within an interior of the shredder box. The shredder rotor is rotatable about a rotor axis and has a plurality of rotor teeth. An access door is pivotally moveable between an open position and a closed position, the access door defining a side wall of the shredder box when in the closed position. A shredder comb is positioned at an interior side of the access door and includes a plurality of shredder comb teeth. When the access door is in the closed position, the shredder comb is positioned at a shredding location to intermesh with the plurality of rotor teeth for shredding material input to the shredder box. The plurality of shredder comb teeth are removable and reversible for use in two orientations.

Abstract: A shredder includes a shredder box and a shredder rotor positioned within an interior of the shredder box. The shredder rotor is rotatable about a rotor axis and has a plurality of rotor teeth. An access door is pivotally moveable between an open position and a closed position, the access door defining a side wall of the shredder box when in the closed position. A shredder comb is positioned at an interior side of the access door and includes a plurality of shredder comb teeth. When the access door is in the closed position, the shredder comb is positioned at a shredding location to intermesh with the plurality of rotor teeth for shredding material input to the shredder box. The plurality of shredder comb teeth are removable and reversible for use in two orientations.

Abstract: A hammer support system for a rotary tool has a hammer receiver including a first alignment opening having a first curved alignment surface. A first wedge part has a curved surface, and a second wedge part is configured to interact with the first wedge part. A fastener is provided for drawing down the first wedge part against the second wedge part such that the curved surface of the first wedge part engages the first curved alignment surface to self-align the first and second wedge parts as the first wedge part is drawn down by the fastener.

Abstract: Mounting blocks for attaching reducing elements to a rotary drum of a comminuting apparatus are disclosed. The mounting blocks may be mounted in multiple positions to vary the bite of the reducing elements of the rotary drum.

Abstract: The field of the disclosure relates to anvils for comminuting apparatus such as grinders or chippers. In some embodiments, the anvil is adjustable in length to maintain a clearance between a comminuting drum and a shear edge of the anvil.

Abstract: A hammer support system for a rotary tool has a hammer receiver including a first alignment opening having a first curved alignment surface. A first wedge part has a curved surface, and a second wedge part is configured to interact with the first wedge part. A fastener is provided for drawing down the first wedge part against the second wedge part such that the curved surface of the first wedge part engages the first curved alignment surface to self-align the first and second wedge parts as the first wedge part is drawn down by the fastener.

Abstract: The field of the disclosure relates to anvils for comminuting apparatus such as grinders or chippers. In some embodiments, the anvil is adjustable in length to maintain a clearance between a comminuting drum and a shear edge of the anvil.

Abstract: Mounting blocks for attaching reducing elements to a rotary drum of a comminuting apparatus are disclosed. The mounting blocks may be mounted in multiple positions to vary the bite of the reducing elements of the rotary drum.

Abstract: A reducing machine is disclosed. The reducing machine includes a rotational reducing component, a power in-feed system for feeding material toward the rotational reducing component, and a mill box at least partially surrounding the rotational reducing component. The reducing machine also includes an anvil unit that can be inserted into the mill box and removed from the mill box. The anvil unit includes a ramp that bridges a gap between the power in-feed and the rotational reducing component. The anvil unit also includes an anvil main body having a first end positioned adjacent the power in-feed and a second end positioned adjacent the rotational reducing component. The anvil unit further includes first and second spaced-apart shear edges positioned adjacent to the second end of the anvil main body.

Abstract: A machine having a snag anvil that prevents an excessive intake rate of material into a grinding or chipping chamber of the machine. The snag anvil includes a recessed impact plane located between longitudinal edges that snag material entering the grinding chamber at an excess intake rate. The machine also includes an open feed roller constructed to prevent material plugging, and a sealing arrangement that eliminates the build up of chip piles underneath the machine.