Probably ~ if the loading applied is normal to the bearing and accounting for a bending moment is not required.1) Am I right by applying a force to only Half of the ID of the Bearing used. I.e. assuming that contact is only made on half of the ID area of the bearing at all times.
Static bearing? bushing or rollering bearing being used?2) My only concern is that It takes into account the material of the shaft, however it doesn't account for the material of the bearing. Would I be right in assuming that the calculator some how works out a coefficient of friction between the bearing and shaft contact surfaces.
Often in bearing and shaft designs the perspective materials used are different. The stiffness, hardness, etc.. will be different therefore we analyze or design to the weakest of the two. I know this is not typically an academic approach which would be to micro analyze all frictions and interactions of applied loading, stress, thermal effects and so on.. As you're aware the FOS and ultimately functional testing proves an application in service.