**The Influence of KOYO Bearing Cage Data on Bearing Operation** Home > Bearing Knowledge > The Influence of KOYO Bearing Cage Data on Bearing Operation *Created on 2018/5/16* var cpro_id = "u3440131";

The Effect of KOYO Bearing Cage Data on Bearing Operation

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/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

The cage in a bearing plays a crucial role in its performance and longevity. It is responsible for maintaining the correct spacing between rolling elements, ensuring smooth operation, and preventing contact that could lead to damage. Therefore, the material used for the cage must meet specific requirements. **(1) Conventional Requirements for Cage Material** 1. **Low Hardness with High Wear Resistance**: Although high hardness materials may offer better wear resistance, using them for the cage can cause excessive wear on the rolling elements. This can negatively impact the bearing’s rotation and even lead to "sticking." 2. **High Fatigue Strength and Elasticity**: The cage undergoes repeated stress from stretching and tightening, so it must have good fatigue resistance, elasticity, and strength to withstand centrifugal forces. 3. **Lightweight Material**: Using low-density materials helps reduce the overall weight of the bearing, which improves efficiency and reduces internal friction. 4. **Good Machinability and Rigidity**: The material should be easy to process and maintain structural integrity under operating conditions. 5. **Low Friction Coefficient**: The cage should have minimal friction with the raceway and rolling elements to ensure smooth movement. 6. **Chemical Stability**: The material should resist corrosion and rust, especially in harsh environments. **(2) Additional Requirements for Cage Material** 1. **Ability to Absorb Lubricants**: The cage should be able to retain or absorb lubricants, improving the overall lubrication performance. 2. **Good Thermal Conductivity**: Efficient heat dissipation is essential, especially in high-speed or high-load applications. The material should have high thermal capacity and heat resistance. 3. **Vibration Damping**: The cage should help reduce vibrations and avoid resonance with other components. 4. **Low Noise Generation**: A well-designed cage minimizes noise during operation, contributing to smoother and quieter performance. **(3) Special Requirements for Cage Material** 1. **Corrosion Resistance**: In corrosive environments, austenitic stainless steel like 0Cr18Ni9 is commonly used due to its excellent corrosion resistance. 2. **High-Temperature Applications**: Austenitic stainless steels with good high-temperature strength are preferred for bearings used in extreme heat. 3. **Enhanced Strength**: For improved strength, low-carbon steel plates treated with carburizing or nitriding can be used. 4. **Self-Lubricating Properties**: Graphite cages or porous materials that can hold oil are ideal for applications where lubrication is limited. 5. **Non-Magnetic Materials**: In magnetic environments, non-magnetic materials are required to avoid interference with external magnetic fields. --- Monitoring the temperature of a KOYO bearing is essential for detecting potential issues. While external housing temperatures can provide an estimate, direct measurement of the outer ring temperature through oil holes is more accurate. Typically, the bearing temperature rises gradually during initial operation and stabilizes after 1–2 hours. If the temperature increases rapidly, it may indicate problems such as excessive lubricant, improper clearance, poor installation, or faulty sealing. Abnormal noises, such as strong metal sounds or irregular noises, can also signal issues. These may stem from poor lubrication, misalignment, bearing damage, or foreign particles entering the system. **Common Issues Identified Through Spectral Analysis**: 1. **Corrosion on the Surface**: Abnormal concentrations of non-ferrous metals are found, along with submicron wear particles. Excess moisture or acid value in the lubricant may be the cause. 2. **Surface Oxidation**: Black oxide particles and tempering colors appear on the surface, indicating possible overheating or improper lubrication. 3. **Outer Surface Corrosion**: Abnormal iron concentration and submicron iron particles suggest contamination or inadequate protection. 4. **External Strain**: Non-ferrous abrasive particles in the spectrum indicate mechanical stress or improper handling. 5. **Fretting Wear**: Abnormal iron concentration and wear particles point to micro-movements that can degrade performance over time. Proper lubrication ensures that the sliding surfaces are separated by an oil film, reducing friction and wear. Additionally, the oil film provides some vibration damping, enhancing the bearing’s overall performance. --- **Related Bearing Knowledge** - How to distinguish between imported bearings and fake ones - Key points for INA oil-free bearing maintenance - Causes of noise in NTN bearings - Oscillation and temperature checks for NTN thrust ball bearings This article links to http:// Please cite China Bearing Network http:// Previous: The effect of bearing support frame and layout features Next: The development of magnetic suspension NSK bearing

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