Analysis Of Tapered Roller Bearing in Bad Operation

It is a common method for tapered roller bearings to use hearing to identify irregular operation. For example, using an electronic stethoscope to detect abnormal noise of a low part is used by experienced operators. If the bearing is in good operating condition, it will emit a low whine sound, and if it emits a sharp hissing sound, tapered roller bearing, squeaking sound and other irregular sounds, it usually indicates that the bearing is in poor operating condition.

1. Corrosion of tile surface: Spectral analysis found that the concentration of non-ferrous metal elements was abnormal; many sub-micron wear particles of non-ferrous metal components appeared in the ferrography; the moisture content of the lubricating oil exceeded the standard and the acid value exceeded the standard.

2. Strain on the journal surface: There are iron-based cutting abrasive particles or black oxide particles in the ferrography, and there is a tempered color on the metal surface.

3. Surface corrosion of the journal: Spectral analysis found that the iron element concentration was abnormal, there were many sub-micron particles of iron composition in the ferrography, and the moisture content of the lubricating oil exceeded the standard or the acid value exceeded the standard.

4. Surface strain: There are cutting abrasive particles found in the ferrography, and the abrasive particles are non-ferrous metals.

5. Fretting wear of tile back: Spectral analysis found that the iron concentration was abnormal, there were many sub-micron wear particles of iron composition in the ferrography, and the moisture and acid value of the lubricating oil were abnormal.

Under liquid lubrication conditions, the sliding surfaces are separated by lubricating oil without direct contact, which can also greatly reduce friction loss and surface wear, and the oil film also has a certain vibration-absorbing ability. Sharp squeaking noise may be caused by improper lubrication of. Improper bearing clearance can also cause metallic noise. The dent on the outer ring track of the tapered roller bearing will cause vibration and cause a smooth and crisp sound. If it is due to the knocking scar caused by the installation, it will also generate noise. The noise will vary with the speed of the bearing. If there is intermittent noise, it means that the rolling parts may be damaged. The sound of tapered roller bearings occurs when the damaged surface is rolled over. If there is contamination in the bearing, it will often cause hissing sound. Serious bearing damage will cause Irregular and loud noises are produced.

Bearing damage can be detected by hearing, but usually the bearing has to be replaced immediately. Therefore, the better method is to use, for example, electronic condition monitoring equipment, to pre-break the running condition of the tapered roller bearing.