【Q&A Question 038】May 28, 2016
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【Q&A Question 038】May 28, 2016: What are the reasons for excessive noise in motors? The answer key will be available after responding; scoring is based on answering the key points. 1. Motor running on single phase 2. Excessive vibration 3. Scratching of the stator (friction between rotor and stator) 4. Bearing friction
The bearing is displaced too much and not fixed properly
Lack of oil in the bearings, friction between the cooling fan and the housing, missing phase, resulting in resonance
Failure to perform maintenance on time, some parts are loose
1. Motor running on single phase 2. Excessive vibration 3. Scratching of the stator (friction between rotor and stator) 4. Bearing friction
Manufacturing issues themselves； Misalignment or deviation in pipeline installation causes excessive vibration ； Bearing issues
Axle vibration, axle displacement, loud fan noise
Bearing wear, lack of lubricant, poor alignment