Using the hearing to identify irregular operation is a very common method.For example, through electronic stethoscope check in sleep a certain parts of the abnormal noise is often experienced methods used by the operator.If without oil bearing in good state to swing low whimpering sound.If a sharp hiss tone, make sound, and other irregular often said oilless bearing in adverse to swing.Sharp make noise may be because of improper lubrication.Improper FAG bearing entrance clearance can cause metal sound.Oilless bearing outer ring orbit of concave dent causes vibration of the orbit, and cause smooth and crisp voice.If it's because when installation caused by hitting scar also can produce noise, the noise will follow without oil lubricated bearing rotating speed of high and low.
If there is intermittent noise, said the move may be damaged.This voice is happens when the surface is damaged rolling expired, oil-free lubrication bearings if pollutants often causes hissing sound.Severe with bearing damage will produce irregular and big noise.
Although no oil lubricated bearing damage by listening to sleep, but usually at this time has arrived without oil lubrication bearing must be replaced immediately.Therefore, good methods such as using techniques such as electronic condition monitoring instrument.Compared with old method USES a stick more precise forecast of no oil lubricated bearing.
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