Noisy and Vibrating Electric Motor: Excessive noise is an indication of motor problems. 1. Would you like to write for us? Test the motor by itself. Operating a motor at “only” 15% above rated load (i.e., equal to the 1.15 service factor of many motors) can reduce winding thermal life to one-fourth of normal. For relieving this problem, check for the damaged bearings, loose mounting, and shaft alignment. It may also result in over-tensioning of belts, which places excessive radial loading on the drive-end bearing. What is the full-load speed? Some of the basic maintenance tips include cleaning dust and dirt, lubricating the bearings, and insulating windings whenever necessary. If the motor is an open enclosure in a dirty environment, consider replacing it with a totally enclosed fan cooled (TEFC) model. But opting out of some of these cookies may have an effect on your browsing experience. See Fig a professional repairer, What would you say ok with this but! 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