The results are considered of the investigations into the reasons and mechanisms of wear of the hinge-lever tilting mechanism bearings of the continuous billet casting machine mold operating in the rolling motion mode. The types of defects of the outer and inner rings of the bearing are determined, as well as their shape and relative position. The optical and electronmicroscopic analysis of the surface of the defect is performed. It is established that the static and dynamic loading parameters have a significant effect on the mechanisms of friction and wear, as well as on the formation of dents in the bearing races. The results obtained allow assessing the reasons for wear of the hinge-lever tilting mechanism bearings, and laying the ground for the development of the technique for their elimination or minimization.
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