Impact of angular contact ball bearing verification on use
Lanyu Bearings is specialized in the production of double row angular contact ball bearings for more than ten years. Our customers are all over the domestic and foreign. Lanyu's senior research experts will share our technical experience with friends who care about and support the development of Lanyu Bearing. I hope you will continue to support Lanyu Bearing and continue to care about Lanyu bearing. In this issue, we will focus on the impact of angular contact ball bearing verification on use.
Wear failure is one of the common failure modes of all kinds of bearings, which can be divided into the most common abrasive wear and adhesive wear according to the wear form.
The judgment of whether angular contact ball bearings are available is mainly decided by considering the degree of bearing damage, mechanical property, importance, running conditions and the period to the next overhaul. If there are the following defects, they can no longer be used and must be replaced with new thrust ball bearings. There is a crack or notch on any one of the inner ring, outer ring, rolling body or cage.
The shaft parts of the machine tool, especially the spindle, are generally assembled into one with the thrust ball bearing, and rotate at a very high speed, and sometimes produce very high heat. If this phenomenon is not eliminated in time, it will lead to overheating of angular contact ball bearings, and increase the temperature of the corresponding parts of the machine tool and produce thermal deformation. In serious cases, the spindle and tail frame will not be high, which not only affects the accuracy and machining accuracy of the machine tool itself, but also will burn out the bearing.
Rated fatigue life refers to the total number of rotations of a group of bearings of the same model running under the same conditions, of which 90% angular contact ball bearings do not appear spalling caused by rolling fatigue.
At constant speed, the rated fatigue life is indicated by the total running time. When studying the life of thrust ball bearings, fatigue life can not only be considered, but also be considered according to the performance that bearings should have and several service limits. For example, grease life of grease lubricated bearings. Noise life, wear life, etc., according to different uses, the use of limits are different, therefore, most pre-selected experience limits.
Therefore, it is difficult to know the real cause of damage only by investigating the damage of angular contact ball bearings. However, if you know the use of thrust ball bearing machinery, use conditions, the structure around the bearing, understand the situation before and after the accident, combined with the damage state of the bearing and several reasons, you can prevent similar accidents from happening again.
When the angular contact ball bearing is rotating, the raceway surface of the inner ring and the outer ring is in rolling contact with the rolling body, so the running track is dark. The running track attached to the raceway surface is not abnormal, so the load condition can be known. Therefore, when removing the oil-free bearing, please pay close attention to and observe the running track of the raceway surface.
The author of the above article is an expert from a professional manufacturer of double row angular contact ball bearings, based on his years of research on double row angular contact ball bearings and other 3056 bearing series. In the future, there will bea lot of better news and technical knowledge about double row angular contact ball bearing products. Please visit the official website of Lanyu Bearing Company: www.lanyu-bearing.com.
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