Calculation of rolling bearing friction torque, one of the method is to friction torque into separate parts, including the load torque influence not M0 and torque load and depends on the M1, then put the two together up, draw: M = M0 + M1, this method used today.
 
But if not only consider the load factors, but according to lead to the root cause of the friction to a detailed analysis, then can give more accurate calculation method. In fact, the outside is accord with M0 said the friction, if add fluid in the rolling friction force component that become and load the relevant sections.
 
To be more accurately calculate the rolling bearing the friction torque, must consider the four different cause friction reason M = Mrr + Msl + Mseal + Mdrag type of M = total friction torque, Nmm Mrr = rolling friction torque, Nmm Msl = sliding friction torque, Nmm Mseal = seals the friction torque, Nmm Mdrag = due to drag damage, eddy current and splash the causes of friction torque, Nmm this new method determine what happened in the bearing of the cause of the friction each cause and will these factors together. In addition, can according to need, join seals and other extra cause friction to calculate the total friction torque.
 
Because the model is put every contact part (groove and raised edge) were considered, therefore, it is easy to change the design and improve the surface quality of the work, and better able to improve the design of SKF bearing reflected. This model also is easy to update.




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