Patent ID: 8740122

Claim:
A grinding roll having a cylindrical shape with a central axis of rotation for the high-pressure comminution of granular milling material, having a reinforcement with a plurality of hard bodies which protrude radially from a cylindrical surface of a main part of the grinding roll, comprising at least some of the hard bodies having a continuous recess extending therethrough, wherein the recess extends in a radial direction of the grinding roll and wherein a ratio of radial height to width of the hard bodies with the continuous recess is 1.5 or less, and wherein the hard bodies with a continuous recess each have, in the radial direction of the grinding roll, in addition to a main profile of the continuous recess of a particular geometric shape, a secondary profile of the continuous recess, wherein the secondary profile comprises at least one round or pointed bulge to at least one of the inside and outside of the geometric shape of the continuous recess, a chamfer, and a rounding on edges of the hard body, the secondary profile of the continuous recess being arranged one of symmetrically and asymmetrically.