Whether the report shall be NTN bearing specific judgment methods, namely NTN bearing has been fully use and destruction is near the concret judge the method is as follows:
1) use NTN bearings working condition monitoring instruments
Using such as iron spectrometer is SPM or the I-or ID-type 1 NTN import bearings working condition monitoring instruments to judge NTN bearing working condition and decided to NTN bearing when should be effectively, this is the most convenient and reliable method.
For example when use HD-type 1 instrument, when the pointer close to the danger zone by warning, and take measures to improve the lubrication pointer did not return after, it can be judged NTN bearing is itself, right now but has not yet come into the danger area while, will NTN bearing effectively. How far away from danger spots on earth began to repair service, can adjust by experience.
To use this instrument, can make full use of NTN bearing work potential, timely NTN bearing will effectively, and can avoid the problem, is safe and economic.
2) use simple tools to monitor
With these instruments in the occasions, the operator can hold round rods or wrench and tools to the conflict of the bearing machine shell parts NTN, ear is ashamed of the tool will monitor the tools of running bearings from NTN sound, of course, also can use medical stethoscope modification.
Normal NTN running bearings shall sound is even, stable not harsh voice, not the normal NTN running bearings is sound with various kinds of intermittent, impact or harsh sound. First have to get used to the normal NTN running bearings sound, then can grasp the judgment is not normal NTN running bearings sound, and then through the practice of the accumulation of experience, and further analysis of what not corresponding to the normal voice what kind of NTN bearing not normal phenomenon. NTN bearing not normal voice categories many, but difficult to talk, mainly depending on the accumulation of experience.
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