The crane vertical reducer is divided into two series of QJ-L and QJ-T. It is mainly used for crane operation mechanism, and also can be used in the operation mechanism of various mechanical equipment such as transportation, metallurgy, mining, chemical industry, light industry and so on. The gears and gear shafts are made of medium hard carbon steel alloy tooth surfaces. With the advantages of compact structure and high bearing capacity, it is another new product introduced by our company after ZSC and ZSC(A) reducers.