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軸承在日常的實際使用中，都可以明顯的觀察到，在同樣的工作條件下的外觀一致的軸承，實際壽命卻大不相同。有的軸承能使用很久，而有的軸承隔斷時間就要更換。那麼，如何判斷軸承能否再次使用，或是更換呢？



1、為了判斷拆下的軸承能否重新使用，要著重檢查其尺寸精度、旋轉精度、內部遊隙以及配合面、滾道面、保持架和密封圈等。

2、對設備的定期檢修，運轉檢查及週邊零件更換時被拆卸下來的軸承進行檢查，以此判斷可否再次使用或使用情況的好與壞。

3、要仔細調查和記錄被拆下來的軸承和外觀情況，為了弄清和調查潤滑劑的剩餘量，取樣以後，要很好地清洗一下軸承。

4、其次檢查滾道面，滾動面和配合面的狀況以及保持架的磨損狀態等有無損傷和異常情況。

5、判斷軸承可否再次使用，要在考慮軸承損傷的程度，機器性能、重要性、運行條件、檢查週期等以後再來決定。

6、如果發現軸承有損傷和異常情況時，不僅要剛換軸承還需要查明原因，制定解決對策，避免換上的軸承再次受到損傷。

7、如果有下面幾種缺陷的話，軸承就不能再用了，需要更換新的軸承。

① 內外圈、滾動體、保持架其中任何一個有裂紋和出現碎片的。

②內外圈、滾動體其中任何一個有剝離的。

③滾道面、擋邊、滾動體有顯著卡傷的。

④保持架的磨損嚴重或鉚釘鬆動厲害的。

⑤滾道面、滾動體生銹和有傷痕的。

⑥滾動面、滾動體上有顯著壓痕和打痕的。

⑦內圈內徑面或外圈外徑上有蠕變的。

⑧過熱變色厲害的。

⑨潤滑脂密封軸承的密封圈和防塵蓋破損嚴重的。

以上就是關於如何判斷軸承能否再次使用的簡單介紹，希望看後能幫助到大家，為使軸承充分發揮並長期保持其應有的性能，必須切實做好定期維護保養（定期檢查）。通過適當的定期檢查，做到防患於未然。

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In practical usage, it's often noticeable that bearings with consistent appearances under the same working conditions can have vastly different lifespans. While some bearings last a long time, others need replacement after a short period. So, how do we determine whether a bearing can be reused or needs replacement?

1.To assess whether a removed bearing can be reused, attention should be paid to checking its dimensional accuracy, rotational precision, internal clearance, as well as mating surfaces, raceways, cages, and seals.

2.During regular equipment maintenance, inspection, and replacement of peripheral parts, removed bearings should be inspected to determine whether they can be reused or their condition.

3.Thoroughly investigate and record the condition of removed bearings and their appearance. To determine the remaining lubricant and ensure accuracy, bearings should be cleaned thoroughly after sampling.

4.Subsequently, inspect the condition of the raceways, rolling surfaces, mating surfaces, and the wear of the cage for any damage or abnormalities.

5.The decision on whether a bearing can be reused should consider the extent of bearing damage, machine performance, importance, operating conditions, and inspection cycles.

6.If any damage or abnormal conditions are found in the bearing, not only should the bearing be replaced, but the cause must also be identified, and corrective measures should be implemented to prevent subsequent damage to the replaced bearing.

7.Bearings cannot be reused if they have the following defects and need replacement:

-Any cracks or fragments in the inner and outer rings, rolling elements, or cages.
-Peeling on the inner and outer rings or rolling elements.
-Significant scratches on raceways, flanges, or rolling elements.
-Severe wear on the cage or loose rivets.
-Rust or scars on raceways or rolling elements.
Significant indentation or bruising on rolling surfaces or rolling elements.
-Creep on the inner ring bore or outer ring outer diameter.
-Severe discoloration due to overheating.
-Severe damage to the seals or dust covers of grease-sealed bearings.

This is a brief overview of how to determine whether a bearing can be reused. It is hoped that this information will assist in maximizing the performance of bearings and maintaining them for the long term. Effective periodic maintenance (regular inspections) is essential to ensure bearings perform optimally. Through proper periodic inspections, potential issues can be identified and addressed in advance.