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EDA angular contact ball bearings exhibit strong regularity in the course of its use, and the repeatability is very good. High quality bearing (EDA angular contact ball bearing) used in the beginning, vibration and noise are relatively small, but some scattered spectrum, amplitude is small, may be due to some defects in the manufacturing process, such as surface burrs caused by.
The campaign for a period of time, to maintain a certain level of vibration and noise, frequency spectrum is very single, only appeared one or two times. Rarely appears three times above the frequency spectrum, bearing condition is stable, entered the period of stable work.
We believe that, when the EDA angular contact ball bearings which shows the initial fault. At this time, requires close monitoring of the EDA angular contact ball bearings, pay close attention to the change.
Since then, bearing kurtosis value began to decline rapidly, and close to the normal value, while the vibration and noise significantly increased, the increase amplitude begins to accelerate, when vibration more than vibration standards (such as ISO2372), the bearing kurtosis value began to increase quickly, when both exceeding standard of vibration, and kurtosis value more than the normal value (available kurtosis relative standard), we believe that the bearing has entered late failure, the need for timely maintenance equipment, replacing the EDA angular contact ball bearing. EDA angular contact ball bearings exhibit advanced fault feature to appear serious faults (usually bearing damage such as axle, burn, sand frame spallation, raceway, beads to wear) most of the time not more than one week, equipment capacity is more big, the faster the speed, the shorter the time interval between.
EDA angular contact ball bearings exhibit advanced fault feature to appear serious faults (usually bearing damage such as axle, burn, sand frame spallation, raceway, beads to wear) most of the time not more than one week, equipment capacity is more big, the faster the speed, the shorter the time interval between. Therefore, the contact fault diagnosis of ball bearing in the actual EDA angle, once found late fault characteristics, should be decisive judgment bearing fault, arrange the repair as soon as possible.
Using the factor mainly refers to the installation and adjustment, maintenance, maintenance repair and other compliance with technical requirements. According to the requirements of EDA angular contact ball bearing installation, use, maintenance, maintenance technology, which acted on the bearing in operation, speed, load, temperature, vibration, noise and lubrication condition monitoring and inspection, found abnormal immediately find reasons, adjust, make its return to normal. Installation conditions is one of the leading factors in the use factor, the bearing is often caused by the installation of EDAppropriate stress state between the various parts of the complete bearing change, bearing an abnormal state operation and early ending life
The internal factors are mainly three factors refer to structural design, manufacturing process and material quality determines the quality of the bearing.
Metallurgical quality of EDA angular contact ball bearing material was the main factors affecting EDA angular contact ball bearing early failure. With the metallurgical technology (such as vacuum degassing of steel bearing) progress, improved quality of raw materials. Raw materials quality factors has been a marked decline in the proportion of bearing failure analysis, but it is still one of the main factors of bearing failure. Proper selection is still bearing failure analysis must be considered.
Manufacture of EDA angular contact ball bearings generally after forging, heat treatment, machining, grinding and assembling multi-channel processes. Rationality, advanced processing technology, the stability will also affect the service life of bearing. The effect of heat treatment and grinding process quality of finished bearings, often has a more direct relationship with the bearing failure. Study on bearing surface modification layer of work in recent years, the relationship between grinding and surface quality of bearing close.
The main task of service life analysis of EDA angular contact ball bearing, is based on the analysis of data and failure forms of the large amount of background material,, identify the main factors causing bearing failure, so as to put forward the improvement measures, extending the service period of bearing, to avoid premature failure of bearings have a sudden.