The so-called bearing the burn damage state is: SKF bearing raceway round, rolling cage sharply in the rotation until the heat discoloration, softening, deposition and breakage.
   The main reason for SKF bearings burns due to poor lubrication SKF bearings may use regular lubricant or lubricant too much, too little, are incorrect. Secondly may be too large load (preload). The rotational speed is too large. Clearance is too small. Water or other foreign material from entering. If the above two conditions are not so is the axis accuracy and SKF bearing housing, shaft deflection. See here,
    Solution: First, to study the lubricants and lubrication method selected SKF bearing lubricant, and its amount, but also to correct the bearing selection. Studies with SKF bearing clearance and preload, and to improve the sealing device. Check the shaft and housing accuracy.



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