To determine whether the tapered roller bearing can be used again, the decision must be made after considering the degree of damage to the tapered roller bearing, machine performance, importance, operating conditions, inspection cycle, etc. According to the inspection results, if the tapered roller bearing is found to be damaged or abnormal, it is necessary to identify the cause and formulate countermeasures. In addition, according to the inspection results, if there are any of the following defects, the tapered roller bearing can no longer be used and needs to be replaced with a new tapered roller bearing. Since tapered roller bearings are not long-lasting products, their damage frequency is relatively high. Therefore, they must be replaced after a short period of time to avoid unnecessary losses. But under what circumstances do tapered roller bearings need to be replaced? How do we judge whether tapered roller bearings are available? It is mainly determined by considering the degree of damage, mechanical properties, importance, operating conditions, and the period until the next maintenance of the tapered roller bearing. If it has the following defects, it can no longer be used and must be replaced with a new tapered roller bearing. There are cracks or chips on any of the inner ring, outer ring, rolling elements, and cage. 1. There is a break in any of the ferrules and rolling elements. 2. There are obvious jams on the rolling surface, ribs and rolling elements. 3. The cage is significantly worn or the rivets are significantly loose. 4. There is rust and damage on the raceway surface and rolling elements. 5. There are serious indentations and scratches on the raceway surface and rolling elements. 6. There is obvious creep on the inner diameter surface of the inner ring or the outer diameter surface of the outer ring. 7. Discoloration caused by heat is obvious. 8. The sealing ring or dust cover of the tapered roller bearing sealed with grease is obviously damaged.  

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