Over the past couple of years, motor vibration problems have skyrocketed. You’ve been tasked with figuring out why. One of your first steps was to analyze the motor failure and replacement history. It turns out these failures tend to occur at the same installations, within a few months of a motor replacement. But in a few cases, the trend simply stopped even though nothing was changed other than the motor itself. The motor shop post-mortems show bearing issues such as galling, but ...
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