The difference between CD Electric hoist and MD Electric hoist

CD - type hoists and MD - type hoists are both common wire - rope electric hoists, and their main difference lies in the lifting speed, which is specifically as follows:
CD - type hoist: It is a single - speed hoist, which only has a constant lifting speed. It can meet general use requirements, and is suitable for occasions where the lifting speed requirement is not high and the operation is relatively simple.
MD - type hoist: It is a double - speed hoist, with both fast and slow lifting speeds. Usually, the slow - speed is about one - tenth of the fast - speed. This type of hoist can meet different working conditions. The fast - speed can improve work efficiency, and the slow - speed can be used for precise positioning during the lifting process, which is suitable for occasions requiring high - precision operation, such as equipment installation and the handling of precision parts.
In addition, due to the addition of a motor for the slow - speed function, the structure of the MD - type hoist is more complex than that of the CD - type hoist. But in other aspects, such as basic composition, application scenarios, etc., the two are relatively similar, and they are often used in factories, mines, docks and other places, and are matched with single - girder cranes, gantry cranes, etc