To determine the replacement time of the slewing bearings, it is most convenient and reliable to use the iron spectrometer or SPM or HD-1 bearing working condition monitoring instrument to determine the working state of the bearing and determine when the bearing should be reported for repair.
When using HD-1 instrument, when the pointer is close to the danger zone from the warning zone, and the pointer is not returned after taking measures such as improving lubrication, it can be judged that the bearing itself is a problem. At this time, the bearing can be reported for repair before entering the danger zone. How far is it from the danger zone? It can be adjusted by experience. It is safe and economical to make full use of the working potential of bearing by using this kind of instrument, to timely report the bearing for repair, and to avoid the failure.
Secondly, swing bearing replacement time can be determined effectively by simple tool monitoring. The operator can hold a tool such as a round rod or a wrench to resist the part of the machine closest to the bearing. The operator can put the ear on the tool to listen for the sound of the bearing running from the tool. Of course, it can also be modified with a medical stethoscope. The normal running sound of bearing should be even, smooth and not harsh, while the abnormal running sound of bearing has various intermittent, percussive or harsh sounds. First, we should get used to the normal running sound of bearing, then we can grasp and judge the abnormal running sound of bearing, and then through the accumulation of practical experience, we can further analyze what abnormal sound corresponds to what abnormal phenomenon of bearing. At the same time, there are many kinds of abnormal sound types of turntable bearings.
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