Analyze the advantages and disadvantages of nine kinds of drive devices, help you choose the right type1.Y-type motor + torque limiting hydraulic coupling + reducer is a widely used driving device on Ultrafine vertical mill.2. Disadvantages: the soft starting performance is poor, so it is not suitable to be used in the down transport of ultra vertical mill and ultra vertical mill with speed regulation function.3. Ultrafine vertical mill is widely used in food, electric power, printing, machinery, chemical industry and other fields.