Part name: Hot straightening roller bearing Material: C45 + N Repair requirements: The locations that need to be repaired are shown in Figure 1.2.3. The three parts are marked to the size required by the drawing. Operating conditions of parts: The work roll shaft seat of the hot straightening roll box is severely worn on the line. During the process of straightening the steel plate, the bearing swing is too large. The 1 part in the figure requires the entire surface to be cladding and the symmetry plane also needs to be repaired. 1.5mm, the wear amount of the bearing room in Figure 3 is about 1mm. We need to measure the three parts according to the drawings before determining the specific location for repair.