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How to determine whether the bearing should be replaced

by:JNSN     2021-12-15
The specific method of judging whether the bearing should be reported for repair, that is, the specific method of judging whether the bearing has been fully utilized and the near damage occurs is as follows: 1) Use bearing working condition monitoring equipment such as ferrograph or SPM or I-ID-1 type bearing to work The condition monitoring instrument is the most convenient and reliable method to judge the working condition of the bearing and decide when the bearing should be reported for repair. For example, when the HD-1 instrument is used, when the pointer approaches the danger zone from the warning zone, but the pointer does not return after taking measures such as improved lubrication, it can be determined that the bearing itself is the problem, and you can take advantage of it before entering the danger zone. At the time, report the bearing for repair. Exactly how far away from the dangerous zone is to report for repairs can be adjusted by experience. With such an instrument, the working potential of the bearing can be fully utilized, the bearing can be reported for repair in time, and failures can be avoided, which is safe and economical. 2) Use simple tools to monitor. In situations where the above-mentioned instruments are not available, the operator can hold tools such as rods or wrenches against the part of the machine housing closest to the bearing, and put the ear on the tool to monitor the sound of the bearing running from the tool. Of course It is also possible to use medical stethoscope modification. Normal bearing running sound should be uniform, stable and not harsh, while abnormal bearing running sound has a variety of intermittent, impact or harsh sounds. First, you must get used to the normal bearing running sound, and then you can grasp and judge the abnormal bearing running sound, and then through the accumulation of practical experience, you can further analyze what kind of abnormal sound corresponds to what kind of abnormal bearing phenomenon. . There are many types of abnormal sound from bearings, which are difficult to describe, mainly relying on accumulation of experience.
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