Heating of worm gear reducer Causes of heating of worm gear reducer: (1) oil leakage of reducer, (2) wear of worm gear, (3) wear of transmission bevel gear, (4) damage of bearing (worm), (5) low oil level and insufficient oil supply on bearing, which first shows that the bearing cover has a fever one Heat and oil leakage of reducer. In order to improve the efficiency of worm gear reducer, non-ferrous metal is generally used as worm gear, and the worm is made of hard steel. Because it is sliding friction transmission, it will produce high heat during operation, resulting in differences in thermal expansion between various parts and seals of reducer, resulting in gaps on various mating surfaces, and the oil becomes thinner due to the increase of temperature, which is easy to cause leakage. There are four main reasons: first, whether the material matching is reasonable; second, the surface quality of the meshing and friction surface; third, whether the selection and addition amount of lubricating oil are correct; fourth, the assembly quality and use environment. two Worm gear is worn. The worm gear is generally made of tin bronze. The matched worm material is generally hardened to hrc45-55 with 45 steel. It is also commonly hardened to hrc50-55 with 40C and ground to roughness Rao by worm grinder eight FCM, when the reducer operates normally, the worm is like a hardened “file”, constantly filing the worm gear, causing the worm gear to wear. Generally speaking, this kind of wear is very slow. Like some reducers in a factory, they can be used for more than 10 years. If the wear speed is fast, it is necessary to consider whether the selection of reducer is correct, whether there is overload operation, the material of worm gear, assembly quality or service environment. three The transmission pinion is worn. It usually occurs on the reducer installed vertically, which is mainly related to the addition amount of lubricating oil and the selection of lubricating oil. During vertical installation, it is easy to cause insufficient lubricating oil. When the reducer stops running, the transmission gear oil between the motor and the reducer loses, the gear does not get due lubrication protection, and the effective lubrication is not obtained during startup or operation, resulting in mechanical wear and even damage. four The worm bearing is damaged. When the reducer breaks down, even if the gearbox is well sealed, the factory often finds that the gear oil in the reducer has been emulsified and the bearing has been rusted, corroded and damaged. This is because the gear oil is caused by the condensation of water generated after heating and cooling during the operation and shutdown of the reducer; Of course, it is also closely related to bearing quality and assembly process. resolvent. (1) Ensure assembly quality. In order to ensure the assembly quality, the factory purchased and made some special tools. When disassembling and installing the worm gear, worm, bearing, gear and other parts of the reducer, try to avoid direct knocking with hammer and other tools; When replacing gears, worm gears and worms, try to select original accessories and replace them in pairs; When assembling the output shaft, pay attention to the tolerance fit, D ≤ 50mm, H7 / k6 , D > 50mm, H7 / M6, and anti sticking agent or red lead oil shall be used to protect the hollow shaft from wear and rust and scale on the mating area, which is difficult to disassemble during maintenance. (2) Selection of lubricating oil and additives. The worm gear reducer is generally 220 # Gear oil. For some reducers with heavy load, frequent startup and poor service environment, the factory also selects some lubricating oil additives (such as those of Anzhi chemical company). When the reducer stops running, the gear oil is still attached to the gear surface to form a protective film to prevent heavy load, low speed, high torque and metal to metal contact during startup. The additive also contains sealing ring regulator and anti leakage agent to keep the sealing ring soft and elastic and effectively reduce lubricating oil leakage. (3) Selection of installation position of reducer. If the location permits, vertical installation shall not be adopted as far as possible. In vertical installation, the amount of lubricating oil added is much more than that in horizontal installation, which is easy to cause heating and oil leakage of the reducer. Some of the 40000 bottles / ‘hour pure draft beer production lines introduced by the factory are installed vertically. After a period of operation, the transmission pinion has been greatly worn or even damaged. After adjustment, the situation has been greatly improved. (4) Establish corresponding lubrication maintenance system.
the factory maintains the reducer according to the principle of “five determinations” of lubrication work, so that each reducer is regularly inspected by your personnel. When the oil temperature rises significantly, the temperature rise exceeds 40 ℃ or the oil temperature exceeds 80 ℃, the oil quality decreases, or more copper powder and abnormal noise are found in the oil, it shall be stopped immediately and repaired in time, Remove the fault and replace the lubricating oil before use. When refueling, pay attention to the consistency of oil quantity and installation position to ensure that the reducer is properly lubricated.
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CAMEL Transmission Machinery Factory is a professional supplier,distributor and manufacturer of gear reducers and related accesories. including rotary reducer,worm gearbox, servo-gearbox, planetary gearboxes,planetary gear reducer, helical gear reducers,planetary gearbox,right angle gear reducer, gear reduction,gear motors, electrical motors,DC motors, DC gear motor,dc gearedmotors,AC gear motor,AC motors, servo motors,servomotor, bearings, spur gear,helical gear,bevel gear,worm gear,planetary gear, couplings, oil seals, belts, chains, etc.If you have any need, please feel free to contact CAMEL: Whatsapp:8618015057952 
