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The secret of bearing material:what do you know?
 


To buy bearings, we must choose the right material. First, we must understand the characteristics of each material, so that we can choose to use it properly.Below is a description of the common materials used in bearings, you can learn a simple understanding, I believe you will gain.

The material that you are familiar with should be bearing steel, bearing steel is the most common kind of material in the bearing, bearing steel is also known as high carbon chromium steel, the carbon content is about 1%, and the chromium content is 0.5%-1.65%.Bearing steel is divided into high carbon chromium bearing steel, chromium bearing steel, carburized bearing steel, stainless bearing steel, high temperature bearing steels and magnetic bearing steel six categories, but one of the most commonly used in bearing called high carbon chromium steel, chemical formula for GCr15.The quality fraction of the carbon is less than 2.11%, but not the steel with specially added alloy elements.Sometimes they are called carbon steel or carbon steel.Although lower cost of carbon steel, bearing steel market has essentially replaced carbon steel, because of the bearing steel is not only speed, noise, life, load bearing various aspects are better than that of carbon steel, if can choose carbon steel under the condition of not high demand, this will save you a lot of cost.

After the use of bearing steel boom to stainless steel have already started to rise, in pay attention to all aspects of hardness and rotational speed also have higher requirements, the following to introduce the types and performance of stainless steel, which can be roughly divided into four kinds of stainless steel 420, 440, 304, 316, several kinds of material, this is common in bearing the chemical formula which best characterizes the stainless steel 420 is 4 cr13 chromium content is 12-14%, carbon content in 1.35 0.5%;The chemical formula of 440 stainless steel is 9Cr18 with chromium content of 16-18%;The chemical formula of 304 stainless steel is 18cr-ni, which has good corrosion resistance, heat resistance, mechanical properties of low temperature strength, good heat processing properties such as stamping and bending, and no heat treatment hardening phenomenon.The chemical formula of stainless steel 316 is 18Cr-12Ni-2.5Mo, so its corrosion resistance, atmospheric corrosion and high temperature strength are very good, and can be used in harsh conditions with excellent performance and no magnetis.

440 stainless steel material relative to the material 420 relatively privileged point, it is a kind of stainless iron, advantage is cheap, high hardness, can withstand the high load and high speed, but the downside is rust resistance and corrosion effect is not very strong.316 stainless steel material is pure stainless steel, although it can also be used in strong corrosion resistance performance of non-magnetic environment, but it cannot overall hardening, so the bearing does not apply to the larger load and high speed.Although the corrosion resistance of 304 materials is inferior to 316, its corrosion resistance is much higher than 440 material, which can be used in seawater or alkaline water.


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Hi, how can I help you?debbie