Electro-mechanical considerations for long term drive life in fan, mill, and conveyor applications

High mechanical stresses can lead to premature failure of rotating equipment. Understanding the mechanism causing vibrations helps in proper prediction and monitoring activities to minimize harmful effects of vibrations. This primer provides a mechanical background and measures to mitigate mechanical stresses in rotating equipment involving electric motors and drives. Vibration problems can occur at any time in the life of rotating equipment but is best reviewed and mitigated at the start of the equipment life with analysis and measurement to ensure long trouble free operation. This paper is intended to provide an overview of vibration issues with larger motors and drives in the cement industry.