Why is the outer ring of the bearing in this condition?

2022-08-16View Original

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Since no water has leaked into this bearing, why is the outer ring in this condition?

Reply #22022-08-16

The NSK620/C3 has been in operation with a belt for over a year; today, when it was opened for inspection and refueling, it was found that

Reply #32022-08-22

There are no photos of the top cover; it is suspected that there are leaks in that cover. The middle cover lacks a padding layer as well as any sealing material, and over time, the moisture in the air can cause rusting on the outer edge. The most interesting thing is, why is this butter this color? Is molybdenum disulfide being added?

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Why is the outer ring of the bearing in this condition?

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