Common problems and countermeasures in the application of NTN bearings

**Common Problems and Solutions in the Application of NTN Bearings** Home > Bearing Knowledge > Common Problems and Solutions in the Application of NTN Bearings *Created on 2018/5/16* var cpro_id = "u3440131";

Common Problems and Solutions in the Application of NTN Bearings

Source: Bearing Network | Time: 2014-06-23

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
When using NTN bearings, several common issues may arise that affect performance, lifespan, and reliability. Understanding these problems and their corresponding solutions is essential for maintaining optimal bearing function. **1. Abnormal Load** - **Cause**: Improper selection of equipment clearance or pre-tightening force. - **Solution**: Choose the right clearance and apply the correct pre-tightening force based on the application requirements. **2. Poor Assembly** - **Cause**: Inaccurate machining of the shaft or improper installation methods. - **Solution**: Improve the machining accuracy of the shaft and ensure proper assembly techniques are used. **3. Insufficient Lubrication** - **Cause**: Lack of lubricant or use of an incompatible type. - **Solution**: Add the appropriate lubricant or select a suitable one based on operating conditions. **4. Foreign Matter Contamination** - **Cause**: Dust, dirt, or other particles entering the bearing. - **Effects**: Corrosion, indentations, and scratches. - **Solution**: Clean the affected parts and use high-quality, clean grease to prevent future contamination. **5. Excessive Clearance** - **Cause**: Incorrect fit between the bearing and the housing or shaft. - **Solution**: Ensure proper fit by selecting the right clearance and checking the mating surfaces. **6. Ball or Roller Damage** - **Cause**: Fatigue or foreign object jamming. - **Solution**: Replace the NTN bearing if damage is detected. **7. Abnormal Temperature Rise** - **Cause**: Over-lubrication, insufficient lubrication, or excessive friction from sealing devices. - **Solutions**: - Reduce excess lubricant. - Add the correct amount of lubricant or choose a more suitable type. - Adjust the sealing method or check the cooperation surface of the bearing’s inner and outer diameter. **8. Shaft Oscillation** - **Cause**: Wear, poor assembly, or foreign matter intrusion. - **Solutions**: - Replace the NTN bearing if it shows signs of wear. - Improve the shaft machining precision and use better installation methods. - Remove contaminants and use clean lubricants. **9. Lubricant Leakage** - **Cause**: Excess lubricant, damaged seals, or foreign body invasion. - **Solution**: Adjust the lubricant quantity and inspect or replace the seal as needed. **10. Discoloration** - **Cause**: Over-lubrication or exposure to moisture and contaminants. - **Solution**: Clean the bearing and use the correct amount of lubricant. **Anti-Friction NTN Bearings** Anti-friction NTN bearings are mainly divided into two types: ball bearings and roller bearings. Each has its own advantages and is suited for different applications. These bearings are designed to reduce friction and improve efficiency, making them ideal for high-speed and high-load environments. Their design allows for smooth operation and long service life when properly maintained. --- **Related Bearing Knowledge** - Bearing running track and load analysis: How it affects oscillation in vibrating screens. - The function of stainless steel bearings. - Key features of joint bearings. - SKF aviation rolling bearing technology (Part 1). This article is linked to http:// Please indicate China Bearing Network: http:// Previous: Development and Classification of Spherical Roller Bearings Next: What is a Magnetic Suspension Bearing?

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