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            Description

            Permanent deformation of rolling element or raceway surfaces due to contact stresses exceeding the material yield strength

            Causes

            • Brinelling – overloading by static or impact load

            • Installation and handling damage – impact between bearing and assembly components during handling and installation
            • Debris denting – over rolling of hard or soft particle debris
            Multiple brinell marks on a cup raceway resulting from impact during service.

            Multiple brinell marks on a cup raceway resulting from impact during service.

            Brinell marks on a cylindrical bearing outer race resulting from mishandling during installation.

            Brinell marks on a cylindrical bearing outer race resulting from mishandling during installation.

            Brinell mark near the end of a cylindrical roller that was impacted during installation.

            Brinell mark near the end of a cylindrical roller that was impacted during installation.

            Large hard particle debris dent on a cylindrical inner race.

            Large hard particle debris dent on a cylindrical inner race.

            Soft particle debris denting on a cylindrical outer race.

            Soft particle debris denting on a cylindrical outer race.

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