33011 Tapered roller bearings

33011 Tapered roller bearings

When handling bearings, hands will sweat and rust. Please use clean hands. I suggest you wear gloves if you can.

The use of hearing in order to identify irregular movements is a very common method for cone bearings. For example, experienced operators use electronic stethoscopes to detect abnormal noise in specific components. When the bearing is in good running condition, it will emit a low whistling sound, and when it emits a sharp whistling sound, conical bearings, squeaks and other irregular sounds, it usually indicates that the bearing is in a bad running state.

1. Corrosion of tile surface: Abnormal concentration of non-iron metal elements was found through spectral analysis. There are many non-ferrous submicron wear particles in the iron spectrum. The moisture content of the lubricating oil exceeds the standard. The acid value exceeds the standard.

2. Strain on the surface of the journal: the spectrum of iron has iron-based cutting grinding particles or black oxide particles, and the metal surface has temper color.

3. Daily surface corrosion: According to spectral analysis, the concentration of iron is abnormal, the spectrum of iron has more iron particles in the middle microns, the water content of lubricating oil exceeds the benchmark, and the acid value exceeds the benchmark.

4. Surface strain: cutting grinding particles are visible in the spectrum of iron, grinding particles are non-ferrous metals.

5. Fretting wear on the back of the tile: According to the spectral analysis, the iron concentration is abnormal, there are more wear particles of iron in the middle micron of the iron spectrum, and the moisture and acid values of the lubricating oil are abnormal.

In the state of liquid lubrication, the sliding surface is separated without direct contact with the lubricating oil, which can greatly reduce friction losses and surface wear. In addition, the oil film has a certain vibration absorption capacity.

The shrill noise may be caused by improper lubrication. Improper bearing clearance may cause metal noise. If the mark of the outer ring of the conical bearing is dented, it will produce vibration and emit a smooth and crisp sound. If scratched during installation, noise will be generated. The noise varies according to speed. Bearings. If there is intermittent noise, it may damage the moving body. The sound of the circular bearing occurs when the damaged surface is rolling. If there is contamination in the bearing, it often makes a wheezing sound. Severe bearing damage produces loud sounds irregularly.