THE TYPE OF AXLE-JOURNAL FOR ROLLER-BEARING WHEEL SETS, AND THE CHOICE OF THE ROLLER-BEARING AXLE-BOX

Roller-bearing axle-box and their journals should be built in such a way that the smallest possible amount of tension and deformation is experienced in the axles-journals. This can be achieved in the case of axle-boxes with short axle-journals by means of supporting cups placed at the ends of press assemblies, as well as by fastening the axle-boxes in an axial position. In the case of roller-bearing axle-boxes carrying heavy weights, the deformation of the axles in the region of the bearing seat should be investigated. The dimensions of the UIC axle-boxes are also adequate in the case of an axle strength of 25 mp. if use is made of an axle-journal having a diameter of 130 mm.