1 There are impurities such as iron filings in the box. It is best if the iron filings can be discharged by oiling and cleaning and the magnetic plug of the oil drain hole of the box. If it cannot be discharged, it is recommended to unpack and clean it. Otherwise, once impurities enter the bearing, it will damage the gear in the box and wear the bearing hole, resulting in the scrapping of the whole reducer.
The surface accuracy of the gear is not high, and there is no chamfering practice or gear grinding process, which leads to abnormal sound when the gear box is running. If there is no grinding process, the gear will eventually peel off like a point, which will eventually affect the use. In this way, it is necessary to change the oil frequently and check whether there are massive impurities in the oil. If there are massive impurities, it is recommended to stop using them. If the oil is dirty and has powdery impurities, the sound should be normal after running in.
Monitor the box temperature of the whole reducer at any time, especially the temperature of the bearing position. If the temperature of one or several bearings is abnormal and higher than others, it means that there is something wrong with the bearings there. As long as there is a problem with the bearing, it is basically a fatal problem.
4 installation problem, it may be that the internal gear or other structures are in frictional contact with the inner wall of the box. In this case, the temperature of the non-load-bearing part of the box will be higher than other places, which can be ruled out.
To sum up, the inspection method: always strictly detect the temperature, change the oil frequently and check the oil condition. As long as it is determined that there are massive substances or bearing problems, the whole vehicle will be scrapped without stopping.
Normal: The gearbox temperature exceeds the standard, the noise is abnormal, it is unqualified, and it is forbidden to leave the factory. I don't know how you got such a gearbox.
It is recommended to contact the manufacturer of the gearbox as soon as possible. The gearbox made by general manufacturers is not allowed to be disassembled by customers without permission.
I hope it helps you.
Add:
Noisy gearboxes are all bad products and have little to do with brands. As long as the gear precision is high and the installation size meets the requirements, there will be no abnormal noise.
In addition, it is necessary to solve the noise problem of the main motor and prevent the motor noise from masking the noise of the gearbox.