Abstract: A shank chisel including a chisel head and a chisel shank, wherein the chisel shank bears a clamping sleeve in which the chisel shank is held captively in a direction of a longitudinal axis and is freely rotatably about the longitudinal axis. To allow the shank chisel to be both assembled and disassembled through a chisel receptacle of a chisel holder that is formed as a receiving bore, according to this invention, the chisel shank bears at its end remote from the chisel head a shank extension, the shank extension has a tool receptacle, and the tool receptacle is accessible by way of a spacing region of the shank extension in the axial direction of the chisel that is set back from the lateral surface of the chisel shank and/or from the lateral surface of the clamping sleeve.

Abstract: A circular-shank tool including a shank held in a bore of a tool holder by a locking sleeve, the shank being rotatably held in the locking sleeve. The locking sleeve has one or more retaining elements that project inwards and engage in a peripheral groove in the shank of the tool, thus indisplaceably securing the locking sleeve in an axial direction on the shank of the tool. Because the locking sleeve is mirror-symmetrical to the central transversal plane, the locking sleeve can be fixed to the shank in a position that is rotated through 180°.

Abstract: A circular-shank tool including a tool holder for improving the centering of the shank of the circular-shank tool in the locking sleeve by a configuration of the retaining elements and to improve an ability of the shank to rotate in the sleeve. To achieve this, the retaining elements are distributed between two stamped edges that lie transversely with respect to a longitudinal axis of the locking sleeve and are stamped inwards or indented, the stamped edges extend over part of the circumference of the locking sleeve and are interspaced at a distance that corresponds to the width of the peripheral groove in the shank of the circular-shank tool and the retaining elements form a coaxial concave centering section facing the convex groove base of the peripheral groove.

Abstract: A round shaft chisel with a clamping sleeve, wherein the round shaft chisel has a chisel head and a chisel shaft rotatably maintained in the clamping sleeve. A pivot bearing is between an inner contour of the clamping sleeve and a shaft contour of the chisel shaft so that a center longitudinal axis of the round shaft chisel is pivotably seated with respect to a center longitudinal axis of the clamping sleeve. As a result of the induced tumbling motion of the round shaft chisel within the clamping sleeve 30, improved dirt removal can be assured during operations. The improved rolling action results in reduced wear between the clamping sleeve and the chisel shaft, which has advantageous results regarding the service life.

Abstract: A percussion tool for comminuting materials, in particular wood waste materials, having a beater head and a shank, wherein a cutting insert with an upper cutting edge extending transversely with respect to the cutting direction is fastened on the beater head. If the cutting insert has at least one first cutting element and at least one second cutting element, and if a free space in the shape of the upper cutting edge is arranged on the beater head in the cutting direction behind the cutting insert, then the cutting elements are thus supported over a greatest possible surface and are connected with the beater head. It is thus possible to transfer greater forces into the beater head without it being broken off.

Abstract: A striking tool for comminuting materials, particularly waste wood, having a shank and a chisel head, wherein a cutting insert is fastened on the chisel head. For an extended service life, along with an improved comminuting output, the cutting insert has at least one first and at least one second cutting element and the first and second cutting elements are arranged one behind the other in the cutting direction.

Abstract: A cutting tool for a stump cutter device, having a holder and at least one cutter insert unit, wherein the cutter insert unit has a cutter head and a shank, and wherein the cutter insert unit can be connected with the holder by its shank. To achieve a simple and cost-effective tool exchange, along with the simultaneous low wear of the contact faces, the shank of the cutter insert unit respectively has at least a tapering shank section and at least a widened shank section. The holder has a recess with protrusions corresponding to the tapering shank section and an undercut area corresponding to the widened shank section and thus provides a positive connection between the shank and the holder.

Abstract: A cutter body with a beater having a bearing body, which is penetrated by a bearing bore, wherein a beater head adjoins the bearing body via a connecting section, and the bearing body has lateral faces which receive the bore openings and are arranged on a side, transversely with respect to the bearing axis of the bearing bore. For increasing the operational dependability, at least one of the lateral faces is formed as segments.

Abstract: A fixture for attaching a round shank chisel to a road milling machine or the like. The round shank chisel has a chisel head and a chisel shank. With a bearing surface the chisel head rests upon a wearing protection disk which in turn rests on and is supported by a chisel holder. The chisel shank is accommodated by a location bore of the chisel holder. This invention prevents dirt from penetrating the area of the location bore of such a fixture and at the same time ensures that the free movability of the round shank chisel is not impaired. Thus, the chisel holder has a circumferential projection or a circumferential depression which extends along the location bore. Also, the wearing protection disk has a circumferential receiving groove or a circumferential shoulder and the projection or the depression of the chisel holder engages with the receiving groove or the depression of the wearing protection disk when the round shank chisel is assembled.

Abstract: A method for tipping a cutter head of an end-milling cutter with a hard alloy material, and an end-milling cutter tipped with a hard alloy material. To equip the cutter head with particularly wear-resistant and impact-resistant hard alloy materials, the hard alloy material has particles of hard alloy melted carbide, which are linked together by a bonding agent, for example a solder.

Abstract: A tool for a coal cutting, mining or road cutting machine, having a round-shaft cutter with a cutter head and a cutter shaft. The cutter head rests on a wear-protection disk having an opening. The cutter shaft passes through the opening and the cutter shaft has a clamping element which maintains the round-shaft cutter captively but rotatable around a center longitudinal axis of the receiver, in a receiver of the cutter holder. For a cost-effective fixation of the wear-protection disk against relative rotation, the wear-protective disk has a tab formed on it, which is designed as a holding element and is bent in a direction toward the cutter holder, and which is interlockingly fixed in place in the circumferential direction of the wear-protection disk on a stop of the cutter holder. In one embodiment, the wear-protection disk is fastened on the clamping sleeve.

Abstract: A processing tool for a road surface processing machine, having a tool head coupled with a support element, wherein the support element can be exchangeably fastened on a tool holder. For increasing the non-skid properties of the road surface, the tool head is coupled by a suspension with the support element, by which the tool head can be adjusted relative to the support element.

Abstract: A tool for a coal cutting, mining or road cutting machine, having a round-shaft cutter with a cutter head and a cutter shaft. A wear-protection disk is pushed on the cutter shaft, on an upper side of which the cutter head rests. The cutter shaft is captively held in a receiver of a holding projection of a cutter holder in a direction of a center longitudinal axis of the projection but freely rotatable around the center longitudinal axis. The projection has a support surface which extends at least in sections around the receiver on which a wear-protection disk rests with an opposite surface and is supported on a support surface of the cutter holder. The cutter head rests on the upper side of the wear-protection element facing away from the support surface.

Abstract: A round-shank bit for a coal cutting machine or the like, having a bit head and a bit shank, wherein the bit head has a bit tip, maintained by a base element in a receptacle of the bit head. Starting at the base element, the bit tip tapers in a direction toward the free end of the bit tip, wherein the base element forms a maximum diameter of the bit tip, and wherein the bit tip has recesses on its outer contour. In order to assure good rotational behavior over the entire length of the operating time, the base element has the recesses on an outer circumference forming the maximum diameter.