Non-standard bearings analysis test of two bearings of knowledge

Non-standard bearing analysis test of two bearings knowledge source: bearing | last updated: - 2020 08 - 06 non-standard bearings analysis test of two bearings bearing knowledge one: bearing surface quality analysis on bearing inner and outer ring channel and ball after cleaning, can be found: inner and outer ring raceway guard parts found fine axial indentation, parts with oxidation 'blue' phenomenon. Thus again bearing has experienced a very high temperature environment. Through the cold acid on bearing raceway surface after cleaning, we clearly see the inner and outer ring raceway has been severely damaged, and the axial stripes, concentrated in the side of the channel, and channel center is not obvious, that axial force of the bearing is relatively large. For double deep groove ball bearings, which can withstand the axial force is relatively small, more than double row angular contact bearings can withstand axial force is much smaller. Can clearly see the steel ball surface scratches, there are 3 sets of bearing steel ball surface, to illustrate the three sets of bearing experienced a very high temperature environment. Bearing knowledge 2: sealing lip detecting sealing lip for bearing lubrication oil of protection is very important, once the loss of the sealing lip seal performance for the protective effects of bearing grease is greatly reduced, so is very fatal for bearing. Used in the test failure before and after the failure of bearing sealing lip contrast found that failure of bearing sealing lip thin due to wear and high temperature environment, lose existing sealing performance, especially in high temperature working environment basic lost its sealing performance. Failure of bearing sealing ring is completely destroyed, completely lost the sealing performance, it will accelerate the bearing failure.