Abstract: A chisel holder for a ground processing machine includes a base portion including a chisel receiver and a holder receiver. The chisel receiver includes a chisel introduction region for receiving a threaded shaft of a chisel. The holder receiver is configured to receive an internally threaded nut. The holder receiver includes at least one retention face configured to secure the nut against rotation at a peripheral side or the nut.

Abstract: A round-shank pick having a pick head and a pick shank that includes a supporting element pierced along its longitudinal center axis by a mounting hole with an inside diameter for receiving the pick shank. A collar height, measured in the direction of the longitudinal center axis between an end, facing away from the seat surface, of the centering extension and the seat surface or between the end of the centering extension and an inner termination of a recess that is integrally formed in the supporting element in an indented manner with respect to the seat surface, is configured such that the ratio between the inside diameter of the mounting hole in the supporting element and the collar height is less than 8, and/or that the collar height is greater than an axial clearance of the pick mounted in a pick holder.

Abstract: The invention relates to a pick, in particular a round-shank pick, comprising a pick head and a pick shank, wherein the pick head consists of at least a base part and a cutting element, which is connected to the base part and is composed of a hard material, in particular hard metal, wherein the base part has a wear-resistant layer on the outer surface thereof at the connection to the cutting element, which wear-resistant layer covers at least one segment of the outer surface of the base part facing the cutting element and wherein an end face of the wear-resistant layer facing the cutting element is covered by the cutting element. According to the invention, the base part has an axially oriented cut-out for receiving a fastening segment of the cutting element, the base part has a counter surface facing the cutting element and extending around the cut-out, and the counter surface and the end face of the wear-resistant layer form a continuous flat surface.

Abstract: An earth working tool (20), in particular a cultivator bar for agriculture, has a mounting segment (21) and a working part (22) directly or indirectly adjoining it. A wear-optimized design for the earth working tool (20) is achieved according to the present invention by the fact the mounting segment (21) comprises two support surfaces (21.6, 21.8), spaced apart from one another, that are part of a hook-in connection.

Abstract: The invention relates to a beet puller share having a base part which comprises a cutting edge, wherein one or several hard material elements which form deflecting faces on their top surfaces are arranged in the region of the cutting edge, wherein the deflecting faces transition into a surface region of the base part, and wherein the surface region forms a beet guiding zone, in particular, a beet ejecting zone. To improve the service life of the beet puller share and to improve the harvest yield connected therewith, it is provided according to the invention that the hard material elements are realized as cutting elements which form the cutting edge at least in regions and that the deflecting face of at least one cutting element is convexly curved and merges into the convexly curved beet guiding zone, in particular, beet ejecting zone.

Abstract: The invention relates to a pick (10, 11), in particular a round-shank pick, for use on a cutting roller, comprising a pick head (20) and a pick shank (40) for holding the pick in a pick holder (50), wherein the pick head of the pick has at least one cutting region (20.3). Provision is made here for a planar and/or recessed ejection region (20.4) to be arranged in a central region of the pick head so as to directly or indirectly adjoin the cutting region. The pick has an optimized conveying function for the material to be removed.

Abstract: The present invention relates to a pick, in particular, a round shaft pick, having a pick head and a pick shaft, having a support element which has a centring lug on the underside thereof, wherein the centring lug has a centring surface which extends inclined with respect to the central longitudinal axis of the pick and merges into a seat surface. To this end circumferential channel according to the present invention is disposed in the transition region from the centring surface to the seat surface and the depth of the channel relative to the seat surface is greater than or equal to 0.3 mm. The pick has an optimised rotatability and thus a low wear.

Abstract: The invention concerns a tool holder (40) for a ground-working machine, in particular a road groover with a base part (41) comprising a tool-receiving part (45), the tool-receiving part having a tool-insertion region, and the tool-receiving part merging directly or indirectly into a mounting receiver (47) for receiving a nut (30) or the like. According to the invention, in order to be able to perform simplified maintenance with a tool holder of this type, the mounting receiver has mounting surfaces (47.1) for securing the nut peripherally.

Abstract: The invention relates to a chisel (10) having a chisel head (11) and a chisel shaft (17), wherein near its end facing away from the chisel head the chisel shaft has a threaded portion having a thread (19), wherein the chisel head holds a chisel tip (20) made of a hard material, and wherein near the side facing the chisel shaft the chisel head is provided with a supporting surface (15). Especially when superhard hard materials are used for the chisel tip, a load-optimized chisel design is obtained by a domed supporting surface (15).

Abstract: The invention relates to a beet puller share having a base part which comprises a cutting edge, wherein one or several hard material elements which form deflecting faces on their top surfaces are arranged in the region of the cutting edge, wherein the deflecting faces transition into a surface region of the base part, and wherein the surface region forms a beet guiding zone, in particular, a beet ejecting zone. To improve the service life of the beet puller share and to improve the harvest yield connected therewith, it is provided according to the invention that the hard material elements are realized as cutting elements which form the cutting edge at least in regions and that the deflecting face of at least one cutting element is convexly curved and merges into the convexly curved beet guiding zone, in particular, beet ejecting zone.

Abstract: A bit assembly includes a bit having a bit head and a bit shank, a mounting sleeve being held in the region of the bit shank, and a support element that comprises a guidance region being associated with the bit. To allow the bit to be easily deinstalled from the bit receptacle and allow it, if applicable, to be easily installed again, provision is made that the support element comprises, in the region of its underside facing away from the bit head, a deflection segment.

Abstract: A bit assembly includes a bit having a bit head and a bit shank, a mounting sleeve being held in the region of the bit shank, and a support element that comprises a guidance region being associated with the bit. To allow the bit to be easily deinstalled from the bit receptacle and allow it, if applicable, to be easily installed again, provision is made that the support element comprises, in the region of its underside facing away from the bit head, a deflection segment.

Abstract: The invention relates to an earth working tool (20), in particular to a cultivator bar for agriculture, having a mounting segment (21) and having a working part (22) directly or indirectly adjoining it. A wear-optimized design for the earth working tool (20) is achieved according to the present invention by the fact the mounting segment (21) comprises two support surfaces (21.6, 21.8), spaced apart from one another, that are part of a hook-in connection.

Abstract: A bit assembly includes a bit having a bit head and a bit shank, a mounting sleeve being held in the region of the bit shank, and a support element that comprises a guidance region being associated with the bit. To allow the bit to be easily deinstalled from the bit receptacle and allow it, if applicable, to be easily installed again, provision is made that the support element comprises, in the region of its underside facing away from the bit head, a deflection segment.

Abstract: A bit assembly includes a bit having a bit head and a bit shank, a mounting sleeve being held in the region of the bit shank, and a support element that comprises a guidance region being associated with the bit. To allow the bit to be easily deinstalled from the bit receptacle and allow it, if applicable, to be easily installed again, provision is made that the support element comprises, in the region of its underside facing away from the bit head, a deflection segment.