The cause of bearing damage

Source: Bearing network time: 2014-10-29

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Why does the bearing damage the bearing due to the fine parts; therefore, the demand is quite stable when used; that is, the use of high-performance bearings; if it is not properly used; can not reach the expected function; and simply damage the bearing. The use of bearings should focus on the following:
First, adhere to the hygiene of the bearing and its surrounding environment, even if the invisible shallow dust 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 and precise equipment to try to use special things; try to avoid the use of cloth and short fibers and the like.
Fourth, to avoid the corrosion of the bearing directly when taking the bearing by hand; to wash away the sweat on the hand; and apply high-quality mineral oil before operation; especially in the dry season and summer to pay attention to rust.
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.
The bearing life is the number of revolutions of the rolling bearing in revolutions (or the number of hours of operation at a certain speed); the boundary: the bearing within this number of hours; should start fatigue damage on any of its bearing rings or rollovers ( Shedding or disability). But it can be seen clearly in laboratory experiments or in practice; it looks like a bearing under the same working conditions; the life expectancy is very different. There are also several different boundaries. Said bearing "life"; one of them is the so-called "working life"; it shows that the actual life of a bearing before it can be damaged is caused by wear and damage, generally not caused by fatigue; Wear, corrosion, seal damage, etc. are formed.
Why is the bearing worn and damaged?
Only some of the bearings are damaged in practice.
Most of the bearing damage is caused by many loads beyond the original estimate; non-useful seals, too small bearing clearances caused by over-tightening cooperation, etc. Any of these elements have their special damage type and will Leaving a special trace of damage. Thus; examining the bearing of the damaged shaft; in most cases it is possible to find its cause; in general; one third of the bearing damage is caused by fatigue damage; other three points One is due to poor smoothness; the other third is due to contamination of the contaminant into the bearing or device disposal.
However, these types of damage are also related to industrial types. For example, 85% of the pulp and paper industry is due to poor smoothness or contamination to form bearing damage rather than data fatigue.

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