SKF really only says it might be OK, which is likely why you quoted acceptable. If you read what I posted, I said the bearing has staining which is the first stage indicating it has experienced overheating and also that means it was taken close to having permanent damage. If it was overheating, then when the overheating continued it would have advanced beyond the first stage. It might be still be Ok, or it might not. If it was a big bearing for a critical application that cost a good chunk of cash then a much closer inspection would be called for. On a cheap bearing, it makes sense simply to replace it and not take the chance on it. It's easy to determine when a bearing is definitely bad, but not always so easy on a worn one that has bad indicator signs but still doesn't show failure damage.
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