GRINDING ELEMENT FOR USE IN ROTARY GRINDING OR GRINDING TOOLS

A grinding element (1) for use in rotary grinding or polishing tools for use in grinding or polishing surfaces is described, and of the type comprising an elongate profile rail (2) as well as a grinding canvas (4) and support brushes (5). The sanding cloth (4) and the support brushes (5) are mounted in or on the profile rail (2), so that the sanding cloth (4) is supported by its support side (15) by the support brushes (15). The sanding canvas outside the profile rail (2) has a sanding canvas height (9) in a height direction (7) and a canvas length (12) in a longitudinal direction (3). The support brushes (5) and the sanding canvas (4) have different heights, the support brush height (11) and the sanding canvas height (9), respectively, from the profile rail (2), so that the sanding canvas (4) is terminated by an outer free edge area (19) extending beyond the top of the support brushes (5) and a short distance down along the outer free end portions (10) of the support brushes (5). The outer free edge area (19), when used, constitutes an effective area (17) of the active side (16) of the abrasive cloth (4). The abrasive cloth (4) is coated only with abrasive material (18) in the effective area (17). The abrasive material consists of particles (22) of, for example, diamonds (21) or similar materials. The abrasive canvas (4) is cut from an outer free canvas edge (8) against the profile rail in a direction parallel to the height direction (7) to form slats (6). The particles are placed in side rows (26) so that the particles (22) of the abrasive material in a row (26) are placed with the particles offset relative to the particles (22) in side rows (26). The particles in the rows (26) are arranged at a distance from each other (29), so that an overlap of the abrasive particles occurs in the longitudinal direction (3) of the abrasive canvas.