At this point, first perform routine analysis to check whether the vibration velocity spectrum and bearing kurtosis are close to the standard, and then use the power spectrum to investigate whether the vibration energy exceeds the standard. When it is difficult to judge whether there is a fault condition on the vibration signal with complex frequency spectrum, the vibration signal is collected and transmitted to the computer for precise analysis. Once the bearing characteristic frequency appears or is close to the bearing characteristic frequency spectrum, it should be judged that the bearing is faulty, and then based on the magnitude of the amplitude, trend analysis or maintenance can be arranged. At this time, high-pressure injection must be used to lubricate The oil is sprayed into the bearing, and the position of the nozzle should be placed between the inner ring and the center of the cage.Use an oil pump to inject high-pressure oil into the bearing through a nozzle, and the oil injected into the bearing flows into the oil groove through the other end of the bearing.. It is difficult to send the lubricating oil to the bearing by general lubrication methods. The kurtosis of needle roller bearings is not great, and the use of data collectors is now more common. If the spectrum line corresponds to the frequency of the power frequency, you should focus on finding faults in the unit structure; if it is a fraction of the power frequency and there are more decimal frequencies, you should focus on finding the frequency of the needle China Wheel Bearings manufacturers roller bearing, if there is, then the bearing If there is a fault, if there is no fault, you need to be vigilant and strengthen monitoring after troubleshooting other components. Not much for vibration. When the needle roller bearing rotates at a high speed, the rolling elements and the cage also make the surrounding air form an airflow at a relatively high rotation speed. But pay attention to the skills in practice. In fact, many cases of bearing failure occurred while the vibration did not exceed the standard. If the power spectrum is not large, observe various frequency components in the spectrum
