**Anatomy: Smooth Handling of Oil Film in NSK Bearings**
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Source: China Bearing Network | Time: June 5, 2014
Maintaining smooth operation is essential for the longevity and efficiency of mechanical systems. In fact, more than half of mechanical failures or early wear are linked to improper lubrication practices. Proper oil handling can prevent damage such as scratching or welding between moving parts like NSK bearings and gears, reduce friction, and enhance equipment performance while saving energy. It also improves power utilization and brings economic benefits, making it a critical aspect of maintenance.
1. **Professional Lubrication Management**: Assign dedicated personnel for lubrication tasks and establish a comprehensive lubrication management system. Regular training on lubrication knowledge should be provided to ensure best practices are followed.
2. **Oil Level and Quality Control**: Ensure the oil tank has sufficient capacity and maintain an appropriate oil level. Regularly top up the oil and check for air bubbles, sediment, and proper temperature. This helps maintain optimal oil performance.
3. **Oil Sampling and Testing**: Perform regular oil sampling at set intervals. Monitor oil color, viscosity, moisture content, contamination levels, and other key properties. If the wear particle level exceeds 0.1%, it may indicate potential issues, and above 0.5% is considered highly risky.
4. **Data Analysis and Predictive Maintenance**: Analyze test results to predict future lubrication problems and develop preventive measures. Implement alarms and interlocks for oil level, quality, temperature, and pressure to ensure safe operations.
5. **Prevent Contamination**:
- **Procurement and Storage**: Maintain strict control over oil procurement, storage, and disposal. Store oils by type and brand with clear labels to avoid mixing.
- **Storage Conditions**: Keep containers sealed and protected from dust, moisture, and light. Store in cool, ventilated areas with fire safety measures.
- **Oil Inspection**: Check oil parameters such as viscosity, water content, and cleanliness. Ensure impurities are below 0.01%.
- **Fuel Tank Maintenance**: Keep the fuel tank cover closed and use high-quality air filters. Drain the tank regularly and avoid using fiber cloths to clean the tank.
- **Filter Replacement**: When replacing filters, drain the oil in the filter cartridge and avoid contaminating downstream piping.
- **Oil Change Schedule**: Replace oil based on its condition—color, viscosity, moisture, and contamination levels.
6. **Initial Oil Application**: For first-time use of oil film bearing oil, ensure the existing lubrication system is thoroughly flushed. Follow these steps:
- Compare the physical and chemical properties of the new oil with the manufacturer’s specifications and equipment requirements.
- Have skilled personnel analyze oil data to fully understand its function and correct application methods.
**Related Bearing Knowledge**
- Bearings Use "Four Attention" and Bearing Fit Skills Analysis: Bearing Clearance & Internal Clearance
- NSK Bearing Conventions: Understanding Nano-Ball Bearing Film Layout for Wear Reduction
- Bearing Identification Tips
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