One way to calculate the rolling bearing friction torque is the friction torque is divided into separate sections, including not affected by the load torque M0 and depending on load torque M1, then the two add up the drawn: M = M0 +M1 this method is still in use. But if we consider not only the load factors, but according to the fundamental reason to cause friction detailed analysis may give a more accurate calculation method. In fact, M0 is found outside the friction, if coupled to the fluid dynamic component of the rolling friction, there are associated with the load also becomes.

To be more accurate calculation of the rolling bearing friction torque, must consider four different causes friction reason for M = Mrr + Msl + Mseal + Mdrag-in M = total friction torque, Nmm Mrr = rolling friction torque, Nmm Msl = sliding friction torquethe Nmm Mseal = seal friction torque, the Nmm Mdrag = drag damage, swirl and splash as a result of the friction torque, Nmm this new method to determine cause of friction and the combination of these factors occur each bearing lead. In addition, it is also possible according to need, adding the friction caused by the seals and additional reasons to calculate the total frictional torque. This model is considered separately to each contact portion (raceways and ribs), easy to change the design to improve the surface quality of the work, and better able to the SKF bearing design improvements reflected. This model is also easier to update.

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