Abstract: An under sleeper pad (1) for securing to an outer surface (3) facing a ballast bed (2), in particular an underside (4), of a concrete railroad tie (5). The under sleeper pad (1) has an elastic layer (6) and a connecting layer (7) for connecting the under sleeper pad (1) to the railroad tie (5). The connecting layer (7) has a plurality of elevations (8) for embedding in the concrete of the railroad tie (1), and, in a plan view of the under sleeper pad (1), at least some, preferably all, of the elevations (8) have the shape of a diamond, and the diamond has a greater longitudinal extent (14) than transverse extent (13).

Abstract: A carrier body for grinding tools has an inner hub ring which surrounds a central bore for connecting the grinding tool to a rotary drive, and an jacket ring for receiving a grinding means, in particular in the form of a galvanic coating, a grinding ring, or a plurality of grinding segments. The hub ring and the jacket ring are connected to one another by several webs, which are spaced apart from one another, and the webs each have at least one recess.