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Materials in which will affect the performance of the bearing cover - bearing knowledge

by:Waxing     2020-06-05
When viewing the virtues of chrome steel and stainless steel as a bearing material, found that not only do they have antirust effect. And chrome steel is one of the most common bearing material. It is more hard than stainless steel, so it can last longer. But, under high temperature, its performance is poor. Under the high temperature of 120 ℃, bearing great deformation and load decrease. It can withstand the high temperature of 150 ℃, but the instantaneous temperature is 150 ℃ or higher will reduce the service life of bearing. Heat treatment can make the bearing under the high temperature of 170 ℃. The most common type of stainless steel 440 is used for bearing, it hard enough, strong load capacity, 20% lower than brass steel) , but it can rust, can instant high temperature under 250 ℃ and 300 ℃ high temperature continuous. We often make the mistake of thinking that all are magnetic stainless steel. 440 stainless steel is magnetic. It is not completely rust, but the salt, the effect of acid and alkali. 316 good rust resistance grade, nonmagnetic, but is softer, so less load. Because it is not solid, 316 bearing is inaccurate and feels rough.
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