Abstract: An abrasive article, in particular a coated abrasive disc, includes a plurality of holes which are arranged in a hole pattern. The density of holes decreases from an inner region of the hole pattern to an outer region of the hole pattern. At least one hole in the hole pattern is designed as an elongated hole.

Abstract: An abrasive article, in particular a coated abrasive disc, includes a plurality of holes which are arranged in a hole pattern. The density of holes decreases from an inner region of the hole pattern to an outer region of the hole pattern. At least one hole in the hole pattern is designed as an elongated hole.

Abstract: A method for manufacturing a grinding tool which has a binding agent based on aromatic molecules includes cutting an abrasive material parent web with a laser device to form at least one inner contour of the grinding tool, and punching out an outer contour of the grinding tool from the abrasive material parent web.

Abstract: An exchangeable abrasive mechanism or disc for use on abrasive-mechanism carriers having suction holes includes a plurality of through openings that each have a centroid. The through openings are differentiated into three groups that differ in the radial disposition of the centroids. A first group comprises at least one, but not more than four, through openings of a first cross section. At least two of the through openings of the first group are disposed on a first circumcircle diameter that is substantially identical to one of the hole-circle diameters such that, when the abrasive mechanism is correctly disposed on an abrasive-mechanism carrier, they are in direct alignment with and can overlap, two corresponding suction holes. A second group of through openings of a second, preferably smaller, cross section, comprises at least four through openings that are disposed on a second circumcircle diameter that differs from the first circumcircle diameter.

Abstract: A method for manufacturing a grinding tool which has a binding agent based on aromatic molecules includes cutting an abrasive material parent web with a laser device to form at least one inner contour of the grinding tool, and punching out an outer contour of the grinding tool from the abrasive material parent web.

Abstract: A tool unit includes at least one basic body and at least one information element. The at least one basic body includes at least one fastening region configured, at least partially, to couple to a tool receiver of at least one hand-held power tool. The at least one basic body also includes at least one working region configured, at least partially, to work at least one workpiece when in an operating state. The at least one information element includes, at least partially, a material relief in the basic body.

Abstract: An exchangeable abrasive mechanism or disc for use on abrasive-mechanism carriers having suction holes includes a plurality of through openings that each have a centroid. The through openings are differentiated into three groups that differ in the radial disposition of the centroids. A first group comprises at least one, but not more than four, through openings of a first cross section. At least two of the through openings of the first group are disposed on a first circumcircle diameter that is substantially identical to one of the hole-circle diameters such that, when the abrasive mechanism is correctly disposed on an abrasive-mechanism carrier, they are in direct alignment with and can overlap, two corresponding suction holes. A second group of through openings of a second, preferably smaller, cross section, comprises at least four through openings that are disposed on a second circumcircle diameter that differs from the first circumcircle diameter.

Abstract: The present invention relates to a cooling disc for cooling grinding tools, having at least one fastening opening, a side which can face a grinding tool, a side which can face away from a grinding tool, a first contact face which is configured in such a way that it can be brought into contact with a corresponding face of a holding element of a grinding tool, and a second contact face which is configured in such a way that it can be brought into contact with a corresponding face of a fixture for a grinding tool. Furthermore, the invention relates to a grinding system which comprises at least one grinding tool which is provided with a holding element, a fixture for a grinding tool, and at least one cooling disc.