Rising motor vibration revealed a worn coupling in this roll application. Early detection enabled timely replacement, reducing vibration, preventing failure, and avoiding 6 hours of unplanned downtime while saving $439,200.

The CME recommended taking apart the coupling for inspection. While apart, a lift test should be performed on the motor shaft to check for excess bearing play.​

Upon inspection, the motor side of the coupling was found to be stripped, with the teeth completely worn down. The coupling was replaced, resulting in a noticeable drop in vibration levels.