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How to observe and listen in the process of bearing operation to determine whether there is a safety hazard bearing!

wallpapers Resource 2020-05-07

How to observe and listen in the process of bearing operation to determine whether there is a safety hazard bearing!

Observation: the bearing box should be opened periodically to visually inspect the bearing and oil seals. Check the condition of the oil seals near the bearing to ensure that they are sufficient to prevent hot liquid or corrosive liquid and gas from entering the bearing along the axis.

Listening: listening is a common way to identify irregular movements. If the bearing is in good working condition, it will make low purring sound. A sharp hiss, squeak, or other irregular sound is often an indication that the bearing is in poor condition. Sharp squeaking may be caused by improper lubrication; Improper bearing clearance can also cause metal sound; The dent in the raceway of bearing outer ring will cause vibration and cause smooth and clear sound; If the percussion scar caused by the installation will also produce noise, the noise will vary with the speed of the bearing; Intermittent noise indicates that the rolling parts may be damaged; If there are pollutants in the bearing often cause hiss; Severe bearing damage can produce irregular and loud dissonance.

Cylindrical roller bearings, as the most important rotating parts in machinery, to the operation of machinery to effective power. Checking the damage cause of cylindrical roller bearings in advance can effectively avoid the sudden stop of equipment, thus reducing the damage to machinery. In addition to observation and listening, in fact, we can also detect the bearing strain through touch, if the bearing in more than 120℃ temperature for a long run will greatly reduce the bearing life. The causes of bearing temperature rise are: insufficient or excessive lubrication, impurities in the lubricant, excessive load, bearing damage, insufficient clearance and high friction caused by oil seal, etc. At this time we need to fully lubricate the bearing, but also to detect whether there are impurities in the bearing, after all, pollution will shorten the service life of the bearing.



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