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Why is the bearing bad?
Source: China Bearing Network Time: 2017-09-27
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Most of the bearings are damaged due to a number of loads beyond the original estimate; non-useful seals, too small bearing clearances caused by over-tightening cooperation, etc. Any of these elements have their particular damage type and Special traces of damage will be left. Thus; inspection of the bearing of the damaged shaft; in most cases, the cause of its ability can be found; in general; one third of the bearing damage is caused by fatigue damage; One of the points is due to poor smoothness; the other third is due to the contamination of the contaminant into the bearing or the device is not properly handled.
However, these types of damage are also related to the industry. For example, 85% of the pulp and paper industry is due to poor smoothness or contamination to form bearing damage and not because of data fatigue. Bearings are attributed to fine parts; Stable and stable emotions; even the use of high-performance bearings; if not properly used; can not reach the expected functional role; and simply make the bearings damaged. Therefore; the use of bearings should focus on the following:
First, adhere to the sanitary environment of the bearing and its surroundings, even if small dust that is invisible to the naked eye enters the bearing; it will also add bearing wear; oscillation and noise.
Second, the use of the device should be careful not to allow strong stamping; do not allow the hammer to directly hit the bearing; do not allow the pressure to pass through the rolling body.
Third, the use of appropriate, accurate equipment to try to use special things; try to avoid the use of cloth and short fibers and other things. Fourth, to avoid the corrosion of the bearing directly when taking the bearing by hand; to wash away the sweat on the hand; It is coated with high-quality mineral oil and then treated. In the dry season and summer, special attention should be paid to rust prevention.
However, under certain special operating conditions; the bearing can obtain a better life than the traditional accounting; especially in the case of light loads. These special operating conditions are; when the rolling surface (track and tumbler) is smoothed The oil film is useful to separate and confine the external damage that can be caused by contaminants. In fact; under ambition; the so-called Essence bearing life is capable.
Bearing life The number of life of the rolling bearing is defined by the number of revolutions (or the number of hours of operation at a certain speed): the bearing within this number of hours; should be fatigued on any bearing ring or rollover. Or incomplete). But whether in laboratory experiments or in practice, it can be seen significantly; the appearance is the same under the same working conditions; the life expectancy is very different. There are also several different definitions. The bearing "life"; one of them is the so-called "operating life"; it indicates that the actual life of a bearing before it is damaged is caused by wear and damage, which is generally not caused by fatigue; , corrosion, seal damage and other reasons.
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