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Charles, I think those numbers confirm what what we already know from the lawsuit: all else being equal, the dual-row bearings are more durable/reliable than the single-row bearings. Based upon experience in other applications, we also have reason to believe that a ceramic bearing should be more durable than a steel ball bearing of the same design. However, virtually all invovled in this discussion (including the LN Engineering site as per excerpts already quoted) also suggest that lubrication of the bearing is PART of the problem.
Kirk, I look forward to your updates. With a failure rate of approximately 1%, I would think that if you had a dual-row bearing you would likely be fine with a new dual-row steel bearing and DOF. With the single-row bearing, however, I wonder if the additional cost of a good ceramic bearing might not provide added insurance.
Brad
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