T-Blog, Your Bearing Wikipedia

There are many types of bearing materials, among which stainless steel is probably one of the most commonly used bearing materials. Compared with ordinary bearing steel (Chrome steel GCr15/100 Cr6/SUJ2), stainless steel bearing not only have obvious advantages in material, but also much strict in process and precision control than ordinary bearing. It is more stable, has low noise and stronger anti-rust and anti-corrosion properties, it can be used in the condition of -60℃-+300℃with proper lubricant and shields 1.     Excellent corrosion resistance: with strong corrosion resistance, stainless steel bearing is not easy to rust. And it will not react easily with water or liquid, can be washed with water. 2.     Compared with steel material, stainless steel bearing is clean and has longer operating life. 3.     High heat resistance can be operated in high temperature range from 180-1000 °F, therefore it can be adapted to all kinds of weather conditions, even if it’s very hot, we can cool it down with water. Stainless Steel Bearing includes SS440 Stainless Steel Bearing (Generally inner/outer ring/balls and rollers is SS440, cage is SS304): It is a kind of high-strength cutting tool steel with slightly higher carbon content. It can obtain higher yield strength after…

With the development of mechanical manufacturing industry towards high precision and high speed, the application range of bearings is more and more wide, and the performance requirements of bearings are also higher and higher, especially in some special working environment, metal bearings can not adapt to the demand, or even can not work at all. Because of its low density, high modulus of elasticity, low coefficient of linear expansion, wear resistance, high temperature resistance, corrosion resistance and other excellent properties, ceramic material has become an ideal material for high-speed manufacturing of precision bearings. Advantages and Characteristics of Silicon Nitride Ceramics Although silicon nitride is not the hardest and the most tough material in industrial ceramics, it is considered to have the best mechanical and physical properties in high performance bearing applications. Heat ResistanceGenerally, when the service temperature of steel bearings exceeds 120 ℃, the hardness will decrease and the rolling life will also decrease. Silicon nitride has good temperature characteristics, especially suitable for high temperature environment. Centrifugal ForceThe density of silicon nitride is about 3.24 × 103kg / m3, while the density of bearing steel is about 7.8 × 103kg / m3, which is only about 40% of the density…

1) High carbon chromium bearing steel High carbon chromium bearing steel specified in JIS is used as a general material in bearing rings (inner rings, outer rings) and rolling elements (balls, rollers).Their chemical composition classified by steel type is given in “Table 13-1 Chemical composition of high carbon chromium bearing steel”.Among these steel types, SUJ 2 is generally used. SUJ 3, which contains additional Mn and Si, possesses high hardenability and is commonly used for thick section bearings.SUJ 5 has increased hardenability, because it was developed by adding Mo to SUJ 3.For small and medium size bearings, SUJ 2 and SUJ 3 are used, and for large size and extra-large size bearings with thick sections, SUJ 5 is widely used.Generally, these materials are processed into the specified shape and then undergo hardening and annealing treatment until they attain a hardness of 57 to 64 HRC. 2) Case carburizing bearing steel (case hardened steel) When a bearing receives heavy impact loads, the surface of the bearing should be hard and the inside soft.Such materials should possess a proper amount of carbon, dense structure, and carburizing case depth on their surface, while having proper hardness and fine structure internally.For this purpose, chromium steel…

There have a new bearing steel GCr9 appeared in the market,which supplying for Turkey, Poland and some other Europe countries after-market, let’s get the details of what material as below. From the bearing appearance, there is no difference between GCR9 and GCR15, but for the product performance, there have obvious difference. From the bearing appearance, there is no difference between GCR9 and GCR15, but for the product performance, there have obvious difference. Due to the difference of Cr element content, GCr15 have a better performance of wear resistance than GCr9, usually bearing of GCr15 material working life will be longer. . DANA and TBB have a project of needle roller bearing which applied for hydraulic motor. DANA technical and engineer person have inspected TBB Changzhou factory twice on Feb-26th and last December , and our factory satisfied their high quality OE market requests. . . The bearing world has become quite different in 2018 with the introduction of tariffs, price increase of steel in China, closure of factories due to environment issue and also sudden demand increase. Even though the demand levels have now come back to normal with the easing of steel supply as compared to before the cost…