Detailed Method for Determining Whether NTN Spherical Bearings Should Be Repaired

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When it comes to determining whether NTN spherical bearings need repair, there are several effective methods that can be used. The most advanced and reliable approach involves the use of specialized monitoring instruments such as iron spectrometers, SPM devices, or the I-ID 1 type NTN bearing condition monitor. These tools allow technicians to assess the working condition of the bearing in real time and identify potential issues before they escalate into major failures. For instance, with a device like the HD 1 type monitor, if the indicator approaches the warning zone and does not return to normal after improving lubrication or smoothness, it may indicate an internal problem with the bearing. At this stage, the bearing has not yet entered the danger zone, making it the ideal time to perform maintenance. This proactive approach allows for timely repairs based on experience, ensuring both safety and cost-effectiveness. In situations where such advanced equipment is unavailable, operators can still monitor the bearing’s condition using simple tools. For example, holding a metal rod or wrench against the outer housing of the bearing and listening carefully with the ear can help detect unusual sounds. Using a modified medical stethoscope can also enhance this method. A properly functioning NTN spherical bearing should operate smoothly without any sharp or irregular noises. If the sound becomes intermittent, includes impacts, or produces a high-pitched noise, it may signal a fault. It's important for operators to become familiar with the normal operating sounds of bearings so they can quickly recognize when something is wrong. Over time, with practical experience, they can learn to distinguish different types of abnormal sounds and their corresponding issues. This kind of hands-on approach, while less precise than electronic monitoring, remains valuable, especially in environments where advanced tools are not always available. Combining both technological and manual methods ensures comprehensive bearing maintenance and reduces the risk of unexpected breakdowns.

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