Fault analysis of helical gear reducer!

How should we solve the fault of helical gear reducer. The main purpose of summarizing the problems here is to better understand the faults and put forward corresponding solutions.
1、 Heating and oil leakage fault of helical gear reducer
In order to improve efficiency, worm gear reducers generally use non-ferrous metals as worm gears, and the worm adopts harder steel. Due to the sliding friction transmission, more heat will be generated during operation, resulting in differences in thermal expansion between parts and seals, resulting in gaps on each mating surface. The lubricating oil becomes thinner due to the increase of temperature, which is easy to cause leakage. There are four main reasons for this situation: first, the collocation of materials is unreasonable; Second, the surface quality of the meshing friction surface is poor; Third, the selection of lubricating oil addition amount is incorrect; Fourth, the assembly quality and use environment are poor.
2、 Small helical gear wear fault of helical gear reducer
Most of the faults are that the lubrication of oil is not fully considered in the design of some reducers, that is, when there is less oil, the gear can not be fully lubricated, which will lead to accelerated gear wear. Some vertical installation methods have more such faults. In the vertical installation environment, when it stops running, the transmission gear oil between the motor and the reducer loses, and the gear can not get due lubrication protection.
3、 The sealed helical gear reducer will also find problems such as internal bearing rust
The sealed reducer will also find problems such as internal bearing rust. This is usually because after running for a period of time, the condensate produced after the gear oil temperature rises and cools down is mixed with water. When this happens, you can usually see that the gear oil is emulsified, the bearing is damaged, corroded and so on.
4、 Helical gear reducer operates abnormally, causing great noise and failure
There are two cases here. One is knocking noise, such as obvious irregular meshing. Second, rotation / grinding noise. These two different noises are usually caused by different faults. The latter is mostly bearing damage. The former condition may be gear wear.