Bearing failures are a major cause of motor failure. Can you name some common causes of bearing failure? Here’s a list of five common failure modes: Improper lubrication. Mixed grease, too little grease, or too much grease can quickly kill a bearing. Motor bearing lubrication isn’t a grunt job, it’s a job that requires expertise. Mechanical factors such as misalignment or a bent shaft. Ensure any critical motor has been balanced by a motor shop; check shaft runout ...

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