Full definition
Surface wear resembling brinelling but caused by small-amplitude oscillatory micro-sliding (fretting) at the raceways when the bearing is stationary and subjected to ambient vibration. Produces elliptical cavities with reddish residue (iron oxide) without plastic deformation. Common in standby equipment, bearings during transport. Solutions: anti-fretting lubricant additives (MoS₂, EP), light preload or periodic rotation. ISO 15242 standard.