Main — lubrication

As a follow-up on our previous post about electric-motor maintenance tips, we found a prime example of over-lubrication from one of the repair jobs in our motor shop. We unloaded the motor - it seems fine to the untrained eye.   We've got it on our work-space and it still doesn't look all that bad...   When we open the casing, we see the cause of failure.   Take-Away If you had your doubts about over-lubrication, hopefully these photos will be a stern warning. Over-lubrication can cause a motor to overheat and short the windings in the motor. Fortunately in...