KOYO bearings are the main components of locomotives, especially traction motors and axlebox KOYO bearings. Their functions play a decisive role in safe transportation. When the locomotive is running online, once the KOYO bearing fails, the whole train will not run, and the transportation will be blocked. On the positive line, especially the failure of passenger trains, the negative impact is even greater. At the same time, once the locomotive KOYO bearing fails, it is very difficult to repair the locomotive. Therefore, it prevents and reduces the occurrence of locomotive KOYO bearing failure, and the safety of the locomotive. Transportation is very important. Can you detect KOYO bearings with hidden troubles before KOYO bearings are loaded?
The serious damage of KOYO bearings is often not caused by a single cause, but in a combination of several aspects, a vicious cycle occurs under severe operating conditions, resulting in serious burning of KOYO bearings, so it is often difficult to judge after an accident It is caused by some reasons, and it also brings certain difficulties to our related measures. For the convenience of discussion, we first analyze the reasons for the failure of KOYO bearings from several aspects.
When KOYO bearings are used for a period of time, KOYO bearing inner rings, rolling elements, cages, outer rings, raceways, etc. produce certain defects and scars, resulting in poor lubrication of KOYO bearings, causing heat generation of KOYO bearings, long-term heating, Will lead to: (1) dilution of KOYO bearing lubricants. (2) Accelerate the fatigue of the material and reduce the hardness. Due to the above reasons, a vicious cycle is further formed, and the overheating is accelerated to burn the KOYO bearing. The serious KOYO bearing inner ring displacement, the rolling element is out of round, the collision heats up, and finally welded together. Therefore, when running online, if KOYO bearings are found to be severely hot and smoke, do not stop, but keep running to the front station, because the overheated KOYO bearings are in a molten state at this moment, once they stop cooling, they can no longer walk and block the positive line.
It is very important for the oil supply maintenance of the locomotive KOYO bearing, especially for the KOYO bearing. The KOYO bearing has a good lubrication effect. The lack of oil and too much oil can easily cause KOYO bearing failure. KOYO bearings are poorly lubricated and heated. If more is added, it is easy to cause agitation and overheating. Therefore, it is necessary to supply oil in maintenance. At the same time, the cleaning of KOYO bearing grease is also very important. Once other impurities and moisture are dropped into the grease, it will affect. Normal play and build the necessary oil film.
The use time of KOYO bearings is too long, which exceeds the service life of KOYO bearings, which is easy to cause fatigue of materials. In addition, the material is deformed by strong impact, which causes the rollers and raceways to be peeled off and crushed, resulting in poor lubrication and The vibration is increased.
KOYO bearing inner ring and shaft match clearance interference does not match, it is also easy to cause KOYO bearing failure, large interference, it is easy to cause KOYO bearing inner ring to crack due to excessive tensile stress, the interference is too small, also It is easy to cause the KOYO bearing inner ring to "relax".
The serious damage of KOYO bearings is often not caused by a single cause, but in a combination of several aspects, a vicious cycle occurs under severe operating conditions, resulting in serious burning of KOYO bearings, so it is often difficult to judge after an accident It is caused by some reasons, and it also brings certain difficulties to our related measures. For the convenience of discussion, we first analyze the reasons for the failure of KOYO bearings from several aspects.
When KOYO bearings are used for a period of time, KOYO bearing inner rings, rolling elements, cages, outer rings, raceways, etc. produce certain defects and scars, resulting in poor lubrication of KOYO bearings, causing heat generation of KOYO bearings, long-term heating, Will lead to: (1) dilution of KOYO bearing lubricants. (2) Accelerate the fatigue of the material and reduce the hardness. Due to the above reasons, a vicious cycle is further formed, and the overheating is accelerated to burn the KOYO bearing. The serious KOYO bearing inner ring displacement, the rolling element is out of round, the collision heats up, and finally welded together. Therefore, when running online, if KOYO bearings are found to be severely hot and smoke, do not stop, but keep running to the front station, because the overheated KOYO bearings are in a molten state at this moment, once they stop cooling, they can no longer walk and block the positive line.
It is very important for the oil supply maintenance of the locomotive KOYO bearing, especially for the KOYO bearing. The KOYO bearing has a good lubrication effect. The lack of oil and too much oil can easily cause KOYO bearing failure. KOYO bearings are poorly lubricated and heated. If more is added, it is easy to cause agitation and overheating. Therefore, it is necessary to supply oil in maintenance. At the same time, the cleaning of KOYO bearing grease is also very important. Once other impurities and moisture are dropped into the grease, it will affect. Normal play and build the necessary oil film.
The use time of KOYO bearings is too long, which exceeds the service life of KOYO bearings, which is easy to cause fatigue of materials. In addition, the material is deformed by strong impact, which causes the rollers and raceways to be peeled off and crushed, resulting in poor lubrication and The vibration is increased.
KOYO bearing inner ring and shaft match clearance interference does not match, it is also easy to cause KOYO bearing failure, large interference, it is easy to cause KOYO bearing inner ring to crack due to excessive tensile stress, the interference is too small, also It is easy to cause the KOYO bearing inner ring to "relax".
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