Bearing (Bearing) is one of the important parts in modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient (coefficient friction) in the process of motion, and guarantee the accuracy of its rotation (accuracy).
According to the different nature of the friction of the moving element, the bearing can be divided into two categories: rolling bearing and sliding bearing. Rolling bearings have been standardized, and series, but compared with the sliding bearing its radial size, vibration and noise is larger, the price is higher.
Rolling bearing generally consists of outer ring, inner ring, rolling body and cage four parts, strictly speaking, by the outer ring, inner ring, rolling body, cage, sealing, lubricating oil six major components. In simple terms, as long as the outer ring, inner ring, rolling body can be defined as the rolling bearing. According to the shape of the rolling body, rolling bearings are divided into two categories: ball bearing and roller bearing.
As a kind of precision running parts, responsible for bearing management of QE or SQE in the bearing of the problem, should not be the overall problem to the supplier. Bearing early damage, may be caused by a variety of comprehensive factors. When the bearing problems, we hope that the basis of this paper summarizes the possibility of damage to the investigation of the investigation, so as to effectively solve the problem. Don't blindly push the responsibility to the supplier.
Improper installation of — — 16%
1, when the use of brute force, using a hammer to knock the bearing on the bearing damage is the most important; is the main factor in the formation of deformation. 　　
2, the installation is not in place, the installation error or not loaded to bearing formation, bearing clearance is too small. Inside and outside the circle is not in the same center of rotation, resulting in different. 　
Recommendation: select the appropriate or professional bearing installation tool, the end of the installation to use special equipment to detect.
Two, lubrication bad — — 50%
According to the survey, poor lubrication is one of the most important factors to the formation of premature bearing damage. The main factors include: not in time to fill the lubricant or lubricating oil; lubricant or lubricating oil is not in place; lubricant or lubricant selection is improper; lubrication method is not accurate, and so on. 　　
Recommendation: choose the right lubricant or lubricating oil, the use of lubrication filling method.
Three, pollution — — 16%
Pollution also lead to premature failure of bearings, pollution is the dust, metal debris into the bearing inside. The main reasons include: premature opening of the bearing packaging, causing pollution; installation work environment is not clean, resulting in pollution; bearing working environment is not clean, working medium pollution, etc.. 　　
Recommendation: before the use of the best not to open the bearing of the packaging; installation of the installation of the environment to keep clean, to use the bearings to clean; enhance the bearing sealing device.
Four, fatigue — — 34%
Fatigue damage is a common way of bearing damage. The common causes of fatigue damage may be: Bearing long-term overload operation; not timely maintenance; improper maintenance; equipment aging, etc.. 　　
Recommendation: select the appropriate bearing type, periodic and timely replacement of fatigue bearing.
If the bearing selection is accurate, the device method is accurate in place, smooth method and smooth agent selection is accurate, bearing is to be able to operate for a long time. There is a problem with the bearing should be based on the possibility of damage to this article summary of the investigation, do not blindly investigate suppliers all responsibility.