Why do motor bearings rust even after rustproofing?

Some motor bearings are rust-proofed and still found to rust during storage or after unsealing, what are the causes of bearing corrosion? Here comes the answer for you 

1. The cleaning of the motor bearing is not clean

Before using antirust oil, the motor bearing needs to be cleaned; after using antirust oil, the motor bearing cannot be directly touched by hand, nor can there be sweat, water or other debris on its surface.

2. Improper use of antirust oil or use of poor quality antirust oil

If the antirust oil is used improperly or of poor quality, a considerable number of motor bearings will rust, which will lead to a large amount of scrap loss of motor bearings.

3. Poor coating

Poor coating and improper application of rust prevention oil will not produce the desired results. Motor bearings require a certain amount of time in rust preventive oil, especially bearings with complex structures, similar to when dipped or sprayed. Check to ensure that a complete oil film is formed on the surface of all motor bearings requiring rust prevention prior to packaging.

4. The anti-rust oil tank is not added new oil or replaced in time

The rust prevention oil in the tank needs attention to add new oil frequently and replace the new oil regularly for rust prevention, usually by immersion or spraying. If the cleaning kerosene in front is not completely dry, it can easily enter the antirust oil tank, which reduces the active ingredients of the antirust oil and the antirust function.

5. Using unqualified packaging

Packaging materials must meet strict requirements, including not having a corrosive effect on metals, having a small water permeability and oil resistance, and being sealed as much as possible to prevent damage, harmful gases and other forms of soiling.

For more information, please feel free to contact Vshida Micromotors