To evaluate quality, we should set up an evaluation environment.
economy
In the case of low-intensity use, the belt drive is more cost-effective: the domestic strength is not high, and it is usually used once every once in a while. It is often many years before the machine begins to produce obvious performance attenuation, and then it is updated. It is a waste of quality if the machine is replaced before its service life.
Under the condition of high-intensity use, DD motor is more cost-effective: the machine in the laundry room rotates continuously, so it is very important to reduce energy consumption and compare prices. The machine has high reliability and will not cause performance degradation or need to stop for maintenance in a short time.
(2) Cleanliness rate
DD has many rotation modes, and the effect is better in theory. Actually, it's all the same
(3) Noise control
DD drive has no eccentricity and low noise in high-speed rotation.