If the bearing can be used correctly if it is not selected incorrectly, it can be used for a long time before the service life of the SKF bearing. On the other hand, there are accidental early damage, and the early damage that cannot be used, as the cause of the early damage, is insufficient to consider the use of scare lubrication, and further, foreign matter intrusion, bearing assembly error and shaft deflection. Research on large, shaft and bearing housings is not enough. It can be said that these reasons overlap with each other.
Therefore, in order to fully understand the machine used in the bearing, the conditions of use, and the structure of the outer periphery of the bearing, if the situation before and after the accident can be clarified, combined with the damage of the bearing and various reasons, it can prevent similar accidents. It happened again.
The way to determine when to lubricate and when to stop oiling is simple: monitor when developing a baseline, setting up an observation schedule, and filling the oil.
1. Develop a basic line
The bearing base line reflects the decibel strength under normal operating conditions, no visible errors, and sufficient lubrication.
Three ways to develop a baseline:
1), comparison method: If there are multiple bearings of the same type, these SKF bearings can be put together for comparison. Use the same test method or observe each bearing from the same angle. Analyze the decibel intensity and sound quality. If there is no essential difference (less than 8 decibels), we can set it to the base decibel strength of each bearing.
2) Set the basic line when adding lubricating oil: When adding lubricating oil, listen to the intensity of the sound, when the sound intensity drops and then rises. At this time, do not add too much oil, and set it as the basic line.
3) History: Observe the bearing decibel strength, record it every day, and then compare the recorded results for 30 days. If the decibel intensity changes little or no (less than 8 decibels), we can set this as the baseline and use it for later comparisons.
2, set the observation timetable
Equipment criticality associated with total production, environmental results, and operational results is a major factor in selecting and setting up an evaluation mechanical system. It is very necessary to test once a month after the basic observation line is established. For high-decibel bearings that are to be lubricated, the frequency should be detected more frequently so that changes that may occur are observed. If a bearing is in a state of destruction, the lubricant can only temporarily cover up the error. However, the decibel intensity will rise quickly to show the existence of the error. In some cases, this phenomenon will appear in a few minutes, while others will take several days.
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