Localized fretting that occurs when the rolling elements of a bearing vibrate or oscillate with small amplitude while pressed against the bearing race. The mechanism proceeds in stages: 1) asperities weld, separate, and form wear particles, which may then be oxidized; 2) the wear particles cause abrasive wear. The resulting wear is in the form of depressions that appear similar to Brinell depressions obtained with static overloading. (See also Fretting).
