To judge whether the tapered roller bearing can be used again, it should be decided after considering the degree of damage of the tapered roller bearing, machine performance, importance, operating conditions, inspection cycle, etc. Check the results, if the tapered roller bearing is found to be damaged or abnormal, it is necessary to find out the cause and formulate countermeasures. In addition, as a result of the inspection, if there are the following defects, the tapered roller bearing can no longer be used, and a new tapered roller bearing needs to be replaced. Since the tapered roller bearing is not a long-term use product, its damage frequency is relatively high, so after a short period of time, it must be replaced once to avoid unnecessary losses, but under what circumstances does the tapered roller bearing need to be replaced? How can we judge whether tapered roller bearings are available? It is mainly determined by considering the damage degree of tapered roller bearings, mechanical properties, importance, operating conditions, and the period until the next overhaul. If there are the following defects, it can no longer be used, and the tapered roller bearing must be replaced with a new one. There are cracks or gaps on any of the inner ring, outer ring, rolling elements, and cage. 1. Any one of the ferrule and rolling body is broken. 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. Rust and damage on the raceway surface and rolling elements. 5. There are serious indentations and marks on the raceway surface and rolling elements. 6. The inner diameter surface of the inner ring or the outer diameter surface of the outer ring has obvious creep. 7. Discoloration caused by heat is obvious. 8. For tapered roller bearings filled with grease, the seal ring or dust cover is obviously damaged.

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