In our previous issue, we said that failures in how the motor is mounted are often apparent. So, what should you look for? Assuming it’s not a c-face motor, look at the motor feet. One common cause of motor vibration is a warped mounting foot. That’s caused by improper tightening. Always use new bolts, lockwashers, and nuts when fastening a motor in place. Why new? Because once you tighten a threaded steel fastener to its recommended torque, you permanently deform it. The loss of ...

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