Regarding the lubrication of the reducer, it is also a very important link for the maintenance of the reducer. Open and semi-open gear reducer transmission, or closed gear transmission with low speed, is usually lubricated periodically by human workers, and the lubricant used is lubricating oil or grease. The lubrication of the reducer also has its own conditions, and the lubrication conditions for different reducers are also different. Let’s take a look at how the Shanghai Jinchuan reducer lubricates the gear reducer. When the peripheral speed of the gear of the reducer is greater than 12m/S, oil injection lubrication should be used, that is, the oil is supplied by the oil pump or the central oil supply station at a certain pressure, and the lubricating oil is sprayed onto the meshing surface of the gear teeth through the nozzle. When v≤25m/s, the nozzle can be located on the tooth meshing side or on the side of the tooth; when v>25m/s, the nozzle should be located on the side of the tooth tooth, so that the lubricating oil can be used to cool the teeth that have just meshed in time. The gear teeth are also lubricated at the same time. For general closed gear reducer transmission, the lubrication method depends on the peripheral speed of the gear. When the peripheral speed V of the gear is less than 12m/s, the gear teeth of the large gear are often immersed in the oil ground for oil-immersion lubrication. In this way, when the gear is in transmission, the lubricating oil is brought to the meshing tooth surface, and the oil is also thrown to the box wall to dissipate heat. The depth of gear immersion in oil depends on the peripheral speed of the gear. For cylindrical gears, it usually does not exceed one tooth height, but generally it should not be less than 10mm; for bevel gears, it should be immersed in the full tooth width, at least one tooth width half. In multi-stage gear transmission, the oil can be brought to the tooth surface of the gear that is not submerged in the oil ground by means of the oil tanker. The amount of oil in the oil pool depends on the power transmitted by the gear. For single-stage transmission, the oil demand is about 0.35~0.7Lo for every transmission of Ikw power. For multi-stage transmission, the oil demand increases exponentially according to the number of stages.