Abstract: In a cutting blade support body for a wood working cutting head including a cylindrical support body with at least two recesses disposed in axial symmetry and extending over the full axial length of the cylindrical support body for receiving and supporting hard metal cutting blades, an annular plate is mounted on each end face of the cylindrical support body and extends over the axial ends of the recesses so as to radially fully cover the recesses and contain the cylindrical support body when exposed to high centrifugal forces.

Abstract: In a mounting arrangement for supporting, in a stepwise adjustable fashion, a cutting blade in a cutting head for working wood or plastic, the cutting blade has at least one cutting edge and opposite side edges with wave-like profile structures and claw elements are mounted on the cutting head and have engagement portions extending into the troughs of the wave-like profile structures for form-fitting engagement therewith. Each wave-like profile structure has a greater length in the direction of the side edges of the cutting blade than the respective engagement portions of the claw elements so that the position of the cutting blade is adjustable.

Abstract: In a cutting blade mounting arrangement for inserted blade cutting heads a mounting plate for supporting a cutting blade at one side thereof has at its opposite side a tooth structure for firm engagement with the cutting head and the cutting blade has ground bores receiving cylindrical fitting pins projecting from the one side of the support plate for accurately positioning the cutting blade on the support plate in axial as well as in radial direction with respect to the axis of the cutting head.