Cycloidal reducer adopts meshing cycloid pin gear, planetary transmission principle, so usually also called planetary cycloid reducer, planetary cycloidal reducer can be widely used in petroleum, environmental protection, chemical, cement, transport, textile, pharmaceutical, food, printing, lifting, mining, metallurgy, construction, power generation and other industries, as a driver or reduction gear, the machine is divided into horizontal, vertical, biaxial and straight league such as assembly way. Its unique stable structure in many cases can replace the ordinary cylindrical gear reducer and worm gear reducer, therefore, planetary cycloid gear reducer is widely used in various industries and fields, by the majority of users generally welcome.