An overall chromium coating improves the corrosion resistance of the generally used through-hardening rolling bearing steel.
一个总铬涂层提高了耐腐蚀性能的普遍使用，通过硬化滚动轴承钢。
The fatigue life for hybrid rolling ball bearing is researched on the base of its breakdown mechanism and fatigue life of steel bearings. Its fatigue life formula is given.
根据混合轴承的破坏机理，在钢轴承使用寿命公式的基础上，对混合轴承的使用寿命进行探讨，推导出它的寿命公式。
Rolling steel required dimensional accuracy of steel so high is because most of the pressure bearing parts have been formed.
辗压钢要求钢的尺寸准确性，因此上流是，因为大多压力轴承部分构成了。
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