Top Causes of Electric Motor Failure

If you rely on machinery or tools that are ran by electric motors it is important that you understand what sort of conditions can be threatening to their well-being. Knowing what can cause trouble is the best way to prevent it, as you can avoid certain situations and keep a look out for the signs of possible failure, allowing you to have the motor serviced before it completely dies. The following are five of the most common reasons an electric motor for any type of product could fail.


A motor operating in a damp or moist environment is likely to face corrosion issues within its motor shaft and bearings. Rust can result in the malfunction of the motor, so be sure to monitor the air when operating your device for long periods of time.


There are many things that cause an electric motor to overheat, including high exterior operating temperatures, a failed cooling fan, excessive current draw or deteriorating insulation. Overheating is a sure fire way to cook your motor.

Dirt and grime

If you don't keep your motors clean it could face buildup of dirt, dust, sawdust and other worksite contamination that blocks the cooling fan, which can also cause overheating. This debris can also cause parts to become sticky or otherwise tampered, thus creating operational issues.


Excessive vibrations caused by loose mounting bolts could cause misalignment or the accelerated wear of bearings inside the motor. To prevent unwanted vibrations be sure the device is properly mounted when in use.

Electrical overload

You may want to invest in a overload protection device to ensure your tool doesn't suffer from this sudden and unpredictable circumstance. Electric overload occurs when the motor draws more current than it requires to operate.

If you have suffered electric motor failure or have noticed signs of potential failure and need electric motor repair in Denver head to Industrial Motors and Machining. We offer complete electric motor repair for all types of AC and DC motors for tools and other equipment. To learn more about how we can help or if you are interested in electric motors for sale in Denver give us a call at (303) 872-5981 today.

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Written and Published By MORBiZ

Industrial Motors & Machining Blog

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