FIELD: disintegrators and crushing devices.
SUBSTANCE: present invention relates to a grinding machine, such as a grinder, a mill or the like, in which the material to be crushed is fed through a gap, which is made between at least one wear layer applied to the grinding machine component, and mating surface, and with progressive wear of at least one wear layer varies in its length, which is characterized in that to determine wear occurring on wear layer and / or to determine in each case length of gap between wear layer and mating surface, aligned to corresponding mating surface of radar antenna, wherein the radar antenna includes an antenna area and a wear part, which is matched, at least, with wear layer area provided for allowable wear, and wear of wear layer in each case is shortened.
EFFECT: disclosed is a grinder.
17 cl, 4 dwg
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