Abstract: A field shredder comprises a friction base, a housing, a rotatable blade drum provided in the housing and having a rotary axis, and a plurality of blades attached to the blade drum, which cooperate with the friction base to finely chop harvested material. The friction base comprises a plurality of protrusions spaced apart axially and circumferentially. Each of the blades comprises a cutting edge. The protrusions comprise at least two side surfaces having edges formed at an angle with each other and which are both not parallel to the cutting edge of the blade. The plurality of blades comprise a first and a second set of blades, each arranged on one half of the blade drum offset against one another in the direction of rotation of the blade drum and the cutting edge of which are inclined towards the rotary axis of the blade drum.

Abstract: Field shredder with a friction base (10), a housing (6), a rotatable blade drum (7) provided in the housing (6) and a blade (8) attached to the blade drum, which cooperates with the friction base (10) to finely chop harvested material. The friction base (10) comprises a plurality of protrusions spaced apart axially and circumferentially. The blade (8) comprises a cutting edge (12). The protrusions comprise at least two side surfaces (13, 14) with edges which form an angle against one another and are both not parallel to the cutting edge (12) of the blade (8). A first and a second set of blades (8) are provided, each arranged on one half of the blade drum (7), offset against one another in the direction of rotation of the blade drum (7) and the cutting edges of which are inclined against the rotary axis of the blade drum (7).