Ways to prevent motor bearing rust

**Ways to Prevent Motor Bearing Rust** Home > Bearing Knowledge > How to Prevent Motor Bearing Rust Source: China Bearing Network | Time: 2013-05-21 Preventing motor bearing rust is essential for ensuring the longevity and performance of electric motors. Bearings are often exposed to moisture, humidity, and other environmental factors that can lead to corrosion. Here are some effective methods to prevent motor bearing rust: 1. **Use solvent-free paint** – Solvent-based paints can leave behind residues that may cause rust over time. Opting for solvent-free alternatives reduces this risk. 2. **Choose non-oxidizing impregnating lacquer** – If available, use impregnating varnishes that do not contain oxidizing components, such as epoxy-urethane or epoxy-based types. These provide better protection against corrosion. 3. **Adjust curing conditions for melamine acid varnish** – When using melamine acid impregnating varnish, ensure the curing temperature is slightly above 130°C (e.g., 135°C) and the curing time exceeds 180 minutes. Strict process control is necessary, especially in high humidity environments. 4. **Avoid volatile acids in paint** – Select paints that do not contain volatile acids, as these can accelerate rust formation. 5. **Use hydrolysis-resistant paint** – Paints with good resistance to hydrolysis help protect bearings from moisture-related damage. 6. **Apply mineral oil-based grease** – Mineral oil-based greases offer better protection against rust compared to synthetic alternatives. 7. **Seal grease containers properly** – When applying grease manually, ensure the container is tightly sealed to prevent dust and moisture from entering. The amount of grease should be based on specifications—such as 0.60–0.80g for a 6202 bearing—and the application process must remain clean. 8. **Use breathable plastic packaging** – Seal the motor in plastic film with micro-holes to allow ventilation before use. This prevents moisture buildup inside the bearing. 9. **Control grease transformation during painting** – High temperatures during painting or coating can cause grease to degrade, so proper precautions must be taken. 10. **Collaborate with bearing manufacturers** – Work with bearing suppliers to incorporate more effective rust inhibitors during the manufacturing process. 11. **Involve all stakeholders in rust prevention** – Encourage collaboration between motor manufacturers, bearing producers, and paint suppliers to develop comprehensive solutions for bearing corrosion. By following these steps, you can significantly reduce the risk of motor bearing rust and improve the overall reliability of your equipment. **Related Bearing Knowledge** Bearing classification, features, bearing ring grinding, super-processing techniques, developments at home and abroad, imported bearings, bearing life, selection of sliding bearings, bearing materials, layout, ceramic bearings. This article is linked to http:// Please indicate the bearing network: http:// Previous: Analysis of Equipment Cooperation and Adjustment Methods for High-Speed Bearings Next: Bearing Crack Disposal Methods

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