Answer: In the transmission system of air compressors, it can generally be divided into direct drive and side drive (i.e. belt drive). For a long time, the superiority of the two transmission modes has been one of the focus of debate in the industry.
The direct drive of screw air compressors refers to the motor (motor) main shaft connected to the air compressor rotor via a coupling, which is not actually a direct drive in the true sense. The direct drive in the true sense refers to the motor and the rotor being directly connected (coaxial) and the two having the same speed, which is obviously very rare. Therefore, the view that there is no energy loss in direct drive is wrong.
Belt drive, this transmission method allows the rotor speed to be changed by pulleys of different diameters.
