**Analysis of the Relationship Between Bearing Materials and Their Functions** Home > Bearing Knowledge > Contact Analysis of Materials and Functions of Bearings *728*90 created on 2018/5/16* var cpro_id = "u3440131";

Analysis of the Relationship Between the Material and Function of Bearings

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The material used in bearings plays a crucial role in determining their performance and lifespan. Bearings are subjected to various mechanical stresses, including high contact pressure, sliding, and dynamic loading. The components—such as the inner and outer rings, rolling elements, and cages—each have different functional requirements based on their role within the bearing. The inner and outer rings, along with the rolling elements, must withstand high contact stress and repeated fatigue. They require excellent rolling contact fatigue strength, high hardness, and good wear resistance. These properties ensure that the bearing can handle heavy loads and maintain performance over time. The cage, on the other hand, needs to provide dimensional stability, sufficient mechanical strength, and good machinability. It must also be able to withstand varying environmental conditions, such as temperature fluctuations, corrosion, and impact. Depending on the application, the cage may need additional characteristics like heat resistance or chemical resistance. For the inner and outer rings, high-carbon chromium bearing steel is commonly used. SUJ2 (also known as AISI 52100, DIN 100Cr6, and BS 535A99) is the most widely used grade for general-purpose bearings. Larger bearings often use SUJ3 for enhanced performance. In cases where impact resistance is required, materials such as chrome steel, chrome-molybdenum steel, or nickel-chrome-molybdenum steel are preferred. These materials are typically carburized and quenched to create a hard surface layer while maintaining a tough core, improving the bearing’s ability to withstand shocks. NSK, for example, uses vacuum degassing to produce high-purity materials with low oxygen content, ensuring better quality and longer service life. Proper heat treatment further enhances the rolling fatigue life of the bearing. In addition to standard bearing steels, special applications may use high-speed steel for high-temperature environments or stainless steel for improved corrosion resistance. Cage materials vary depending on the type of bearing. Stamped cages are often made from low-carbon steel, while brass or stainless steel plates are used in specific applications. For machined cages, high-strength brass, carbon steel, or resin-based materials are commonly employed, depending on the design and performance requirements. Understanding the relationship between material selection and bearing function is essential for optimizing performance, durability, and reliability in various industrial applications. --- **Related Bearing Knowledge** How to Avoid Overheating of Imported Bearing Parts? Basic Knowledge of Rolling Bearings Ball Bearing Processing and Unit Consumption Specifications Device for Four-Row Cylindrical Roller Bearings in SKF Rolling Mill Bearings NSK Bearing Oscillation Diagnosis This article is linked to http:// Please indicate China Bearing Network http:// Previous: Analysis: Common Methods for Separating Bearings Next: Common Bearing Wear and Countermeasures

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