The bearing is indicating excessive axial loading for some reason. It does not indicate the presence of excessive heat. Is it possible, the lubricant was not correct or incorrect amount? But that would indicate excessive heat. This was not a manufacturing defect anything related to the bearing. Could the bearing have possibly been cocked on the shaft? I have seen that once before, where the bearing was not seated correctly against the shoulder of the journal. Find the reason for axial loading and you will find the problem.