1. Metal surface finish (oxygen concentration difference battery corrosion)

2. Chemical composition and structure of the metal material itself

3. Solution composition and pH value in contact with the metal surface

4. Ambient temperature and humidity

5. Various environmental media in contact with the metal surface

6. Human sweat is the cause of bearing corrosion, and its pH value is 5~6. Therefore, in order to prevent rust caused by hand sweat, installers and production personnel should wear gloves and do not touch the bearings with their hands casually