抄録
It is general that rotation axis has interference fit between the bearing when a bearing is installed into a machine. In inner ring rotation, interference fit is set between the internal diametrical surface and the rotating axis. In order to realize this, press fitting is required. In business and office machines, clearance fit is sometimes applied for sake of improvement of efficiency for assembly even if it is a case of inner ring rotation. However, if the clearance fit is applied between the axis and the inner ring, slip between them provokes damage called "creep". It will have a positive impact for avoiding creep that the inner rings should be pushed by an axial force larger than the force effecting creep. There is no report so far that investigates a measurement of the force effecting creep. Therefore, this research deals with the measurement of slipping force effecting between the rotating axis and the inner ring.
