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Characteristics and practical function of rolling bearing diagnosis techniques we found in the condition monitoring of long term production, demonstrated the use of rolling bearings in their strong regularities, and repeatability is very good. Normal quality TIMKEN bearings when used at the start, vibration and noise are small, but some scattered spectrum, amplitude is smaller, could be due to some defects in the manufacturing process, such as the Burr on the surface due to. Movement after a period of time, to maintain a certain level of vibration and noise, spectrum is single, only Yi、erbei. Very rare more than three times the frequency spectrum.
We believe that the bearing has entered the late-stage fault, need to repair equipment in a timely manner, replace the bearing. TIMKEN bearings demonstrate advanced features to a serious failure (usually bearing damage such as sticking, burning, Sandy spallation, Raceway, wear beads and other) most of the time not more than a week, capacity of larger, faster speed, shorter intervals. Therefore, in practice in fault diagnosis of rolling element bearing, advanced fault is found, should be decisive judgment bearing faulty, arrange repair as soon as possible.
In a large number of such accidents, we also gained some practical tips, this type of bearing is run after the initial installation, to monitor their vibration, and frequency spectrum analysis. We found the TIMKEN bearings early in the run, their spectrum has its own unique characteristics, namely equipment frequency are generally not the main ingredient. Vibration total value is small, with vibration standard (such as ISO2372) determine the vibration is qualified. At this point, our vigilance, the deficiencies in the State that is, for bearing parts, its failure is often very fast and very suddenly. Case study on rotor axle two hours after you test the map. At the time of diagnosis of these counterfeit bearings fault, to take accumulated high quality bearings usually run correctly on the device of frequency and vibration time-domain situation, facilitate the exception occurs when the spectrum to determine bearing failure in time and prevent accidents.
A motor rolling bearing vibration waveform or spectrum, practical spectral analysis and diagnosis of rolling bearing five skill data collector now has become more widely used. But note in the practical skills. Little vibration, TIMKEN bearing kurtosis much vibration signal spectrum complex, difficult to judge at the scene when there is trouble-free, we will come back of vibration signal acquisition, spread to computer precision analysis. At this point, the first general analysis, check whether the vibration velocity spectra and bearing kurtosis near, and spectral investigation on vibration energy over whether, if power spectrum is small, observation of spectrum of frequency components. Line frequency power frequency multiple, you should focus on finding Group structural failure if frequency several times, more decimal frequency, you should focus on finding frequency of the bearing, if any, bearing failure, and if not, cause vigilant after exclusion of other component failure to strengthen monitoring.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 4T-32208 NTN | 40 | 80 | 23 |
| 4T-30208 NTN | 40 | 80 | 18 |