High temperature bearings and ultimate bearing damage
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| Time：2016.08.31 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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In addition to bearing excellent quality, they are all very precision parts, both high-performance bearings, if the defect in the process of applying to use, not only not achieve the desired performance effects, and very easy to damage the bearing, the lubrication sure everyone We have all attention.
Generally bearing quality at high temperatures in the bearing is very strong, is not an ordinary bearing products can be compared, but even if there are good or bad bearings, such as authentic Japanese production of bearings on bearing quality better than many domestic joint venture , then we have to how to detect bearing quality is good or bad it!
Two is better than one holder body
While the new technology uses one cage, but it is only saves material, while the difference between the two rotation properties than the body. Overall, the service life of bearings and three factors are related, one bearing the quality itself. Second, the use of the environment. Third, the installation method.
Chamfer is bright
Bearing chamfer does not determine the quality of the bearing, but it reflects the processing method of the bearing. Chamfering is black, shows that, after hardening heat treatment, which increases the hardness of the bearing, and some people think that black does not look good for the chamfering processing is not complete, this is a misunderstanding.
By feeling the surface bearing quality
Found that many customers based on sales experience that as long as the bearing surface brightness is good quality, which is wrong. Bright surface bearing species should be glossy black, glossy black is the cause of this high temperature bearing steel used whether the target and its grinding and cutting fluid used, etc. produced, which dominated the previous two.
Even invisible dust into the bearings smile will add wear, vibration and noise of the bearing.
Direct hand pick bearings, plenty to wash hands sweat, and coated with high-quality mineral oil and then suspended operations during the rainy season and summer special attention to rust.
Then the bearing damage figure out how to deal with it. Bearing if used correctly, can be used to achieve the fatigue life so far. But there will be unexpected injury prematurely, can not tolerate in the case of use. This early damage, fatigue life and relatively, is known as the quality of accident or malfunction use limits. More due to the installation, use pay attention on the lubrication from outside intrusion of foreign matter, for the study of the shaft, thermal influence of inadequate housing and so on. Bearing damage on the state, such as: roller bearing rings, ribs card injury as a reason to consider inadequate lubricant is not suitable for oil discharge structure defects, scratch invasion of foreign substances, bearing misalignment, shaft song is too large, there will be these reasons overlap. Thus, the survey only bearing damage, it is difficult to know the real cause of injury. However, if you know the mechanical conditions of use, high temperature bearing structure around the bearings, to understand the situation before and after the accident, combined with state of the bearing and damage several reasons, it can prevent similar incidents from recurring.
After presentation can be found, the correct use will not cause damage to bearings, incorrectly installed, use an external immersion foreign body, and improper lubrication, temperature is the main cause of bearing damage, so enterprises should pay more attention in the use of these bearings aspect, to prevent bearing damage occurs, the impact of the work.
Ultimate bearing capacity of damaged Causes
Most of the many reasons for bearing damage, such as beyond the original estimate of the load, the non-effective sealing, tight joint caused by too little bearing clearance and so on. Any one of these factors have their extraordinary factors and the type of damage will leave traces extraordinary damage. Thus, viewing the shaft bearing damage, in most cases, we can invent the probable cause them.
The schematic for a third of bearing damage due to pilot fatigue damage, the other one-third of the guide due to poor lubrication, one-third of the other inducements to contaminants entering the bearing installation or improper handling punishment . However, these types of damage is also related with other possessions. Metaphor, pulp and paper fortune most half due to poor lubrication or bearing damage caused by pollution and not due to material fatigue caused.
Limit the carrying capacity of the axial bearing:
1, as in the bearing under pure axial load, the axial load should generally not exceed the value of 0,5 C0.
2, small bearings (diameter of about 12 mm or less) and light series bearings (Diameter Series 8,9,0 and 1) should not be subjected to axial load greater than 0,25 C0 of.
3, the axial load is too large, it will greatly shorten bearing life.
4. If, after the bearing to bear radial load, axial load can withstand extreme right? Typically, if the bearing can bear radial load, but also bear certain axial load.
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