The preloading value of double row cylindrical roller bearing has been analyzed in rigidity, dynamics and heating. Requirement for preloading values of Model NN3020K and 234420 bearings were given.

• 从刚度、动态特性和温升三方面分析了双列圆柱滚子轴承的预紧量。提出了对NN3020K和234420轴承预紧量的要求。