Spindle Knowledge

Fixed-floating arrangement

With the fixed-floating bearing arrangement of the roller bearings, most often the tool interface side bearing on the outer and inner ring is set, so that there can be no movements. At the other end of the shaft another roller bearing is set on the spindle shaft, whereby the outer ring is designed to be free to slide within the housing. This type of mounting is suitable for spindle mounting, although to a very limited degree because it is not possible to apply the essential pre-tensioning force to the spindle bearing.