Stained dots on lubricant on the friction between the two, if the presence of pollutants, is to feel out; or coated by a thin layer of lubricant on your hand, and then make the rays.
FAG bearings using oil lubrication after purging the old engine oil, if possible, should be grouted with fresh engine oil and make the machine at low speed rotation of a few minutes. Oil collects residual contaminants as much as possible, and diarrhea in addition to the oil again. Note: oil the best filtered before use. Use grease-lubricated bearings when replacing the grease, used by Joe, inter alia with cotton corners should be avoided for any part of the bearing. Fiber because these residues may wedge between scroll and causing damage, especially small bearing application needs more attention to this problem.
Movement over time, maintaining a certain level of vibration and noise, and spectrum are single, only Yi、erbei frequency. Very rarely appeared more than three times times the frequency spectrum, bearing State is stable, entering a stable period.
Continue to run into using late, FAG bearing vibration and noise began to increase, sometimes abnormal noise, but changes of vibration increases more slowly, in which case the kurtosis value of angular contact ball bearing begins suddenly reaches a certain value. We believe that the bearing that is manifested in early failures at this time.
On bearing the periodic maintenance, operation and peripheral parts was removed when changing the bearings when abort soujian, demands discrimination again because of the bearing components can be used in the order and record use of good to bad.
Second soujian FAG bearing Raceway surface, rolling surfaces and surface condition of the joint venture, and the confrontation of special damage and wear and tear conditions there is no anomaly is to look at the Raceway surface running track. Distinguishing bearing will once again use levels thought to bearing damage, mechanical engineering, primacy, premise, soujian cycle, running back to choice.
Raceway as the fag bearing Rotary rolling body Raceway when scrolling and arouse a sense of stability and continuity in the noise, only when the sound pressure level or tone when aroused great attention. Raceway sound when excited by sound energy is finite, this noise to radial load of single row deep groove ball bearings are the most typical, it has the following characteristics:
A random, noise and vibration;
B, the vibration frequency is above 1kHz;
C, no matter what the speed change, noise main frequency is almost unchanged while the sound pressure level as the speed increased and improved;
D, when the radial clearance increases, sharp increase in sound pressure level;
E, bearing stiffness increases, lower the total sound pressure level, even higher speed, its overall sound pressure levels also increase is unlikely;
F, lubricant viscosity, the higher the sound pressure level lower, but for grease lubrication, its viscosity, saponification fiber size can affect the shape of the noise values.



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