Bearing steel is a steel used to make rollers, rollers and bearing circles.Bearing steel has high and uniform hardness and abrasion resistance, as well as high elastic limit.The uniformity of the chemical component of the bearing steel, the content of non -metallic mixed materials and distribution, and distribution of carbides are very strict. It is one of the strictest steels in all steel production.
National Standards for Bearing Steel
In 1976, the ISO of the International Standardized Organization incorporated some universal bearing steels into international standards, and divided the bearing steel into: full quenching bearing steel, surface harden bearing steel, stainless bearing steel, and high temperature bearing steel.Steel number.National technical standards for bearing steel: bearing steel production mainly performs GB/T18254-2002 standards and the Lai Steel GCR15JD quality protocol that adapts to the requirements of precision bearing bearing users.The content ≤10ppm, the central bias level ≤1.0, the component control, the fixed ruler and the size deviation are strict than the GB/T18254-2002 standard.
Bearing steel component
Bearing steel, as one of the strictest steels in all steel production, its carbon content is about 1%, and the chromium content omega is 0.5%-1.65%.Internationally in accordance with international standards, bearing steel is divided into six categories: high -carbon chromium bearing steel, chromium -free bearing steel, carburizing bearing steel, stainless bearing steel, mid -high temperature bearing steel and anti -magnetic bearing steel.Among them, the output of high -carbon chromium bearing steel GCR15 has currently accounted for more than 80%of the worlds total production.The GCR15 of high -carbon chromium bearing steel is the worlds largest production capacity. The carbon -containing WC is about 1%and the chromium content WCR is about 1.5%.For more than 100 years since its birth in 1901, the main components of high -carbon chromium bearing steel GCR15 have not changed.So that if the bearing steel does not have a special explanation, it refers to GCR15.
Bearing steel
The material of the bearing steel is high -purity iron carbon alloy steel! Because bearing steel is mainly used to make rolling bodies and sleeves of rolling bearings.Because the bearing should have the characteristics of long life, high accuracy, low -hair calories, high -speed, high rigidity, low noise, high abrasion resistance and other characteristics, bearing steel should be required: high hardness, uniform hardness, high elastic limit, high contact fatigue fatigue, fatigue fatigue fatigueStrong, necessary toughness, certain quenchability, corrosion resistance in the atmospheric lubricant.In order to meet the above performance requirements, the uniformity of the chemical component of the bearing steel, the content and type of non -metallic mixed object, the granularity and distribution of the carbide, and the decarburization are strict.Bearing steel generally develops towards high -quality, high -performance and multi -variety directions.Bearing steel is divided into: high -carbon chromium bearing steel, carburizing bearing steel, high -temperature bearing steel, stainless bearing steel and special special bearing materials according to the characteristics and application environment.
Bearing steel hardness
Bearing steel price

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