FIELD: process engineering.
SUBSTANCE: active-duplication drive system is used in abrasive mills comprising housing, bowl of runner stones with runner stone way, stones rolling on said way, thrust bearing and runner stone way drive made up of motor and reduction gear. Drive system consists of more than two drives. At least two drives of said system stay continuously serviceable. Said two drives maintain required grinding capacity.
EFFECT: servicing and repair without stopping grinding process.
15 cl, 3 dwg
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