Full definition
Electrochemical or oxidative degradation of bearing raceways and rolling elements caused by moisture, water, acids, alkalis or electric current. Creates pitting that acts as stress concentrators, nucleating fatigue cracks and reducing service life by up to 80%. Types: moisture corrosion (oxidation), electric current corrosion (fluting). Protection: effective seals, grease with corrosion inhibitors, stainless steel (AISI 440C) or DLC coatings. ISO 15242 standard.