Toothed crown is a prefabricated steel cast housing T-shaped part consisting of an outer rim with cut on it on the outside of the teeth, and the rib on the inside of the rim; in the rib of the crown made holes, by which the crown is attached to the drum of the mill.
The installation of the casing of the toothed crown is a prefabricated housing part made of rolled sheet metal, the casing constructively covers the toothed crown from the outside and is designed to protect it from the effects of external factors - getting on the toothed gearing of the mill drive dirt, dust, water, etc..
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