1. Surface strain: The cutting abrasive grains are found in the iron spectrum, and the abrasive grains are non-ferrous metals.
2, fretting wear behind the tile: spectral analysis found that the iron concentration is abnormal, there are many iron components in the iron spectrum sub-micron wear particles, lubricating oil moisture and acid value is abnormal.
Under liquid lubrication conditions, the sliding surface is separated by the lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has a certain vibration absorbing capability.
Sharp squeaking noise may be caused by improper lubrication. Improper radial journal bearing clearance can also cause metallic sound. The dents on the outer ring track of the tapered roller bearing cause vibration and smooth and crisp sound. If the knocking damage caused by the installation is also caused by 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 the tapered roller bearing occurs when the damaged surface is crushed. If there are pollutants in the bearing, it will often cause noise, and serious bearing damage will occur. Produces irregular and huge noise.
Bearing damage can be detected by hearing, but usually the bearing must be replaced immediately. Therefore, a better method is, for example, the use of an electronic condition monitoring instrument, and the tapered roller bearing is used to operate the pre-rupture bearing.