Bearing in operation, ISO2372 standards although they are in vibration velocity to determine whether the excessive vibration, but the practice in the field with special attention to changes in the value of bearing acceleration, bearing most of the damage during the initial stage of fatigue damage, this can generally be expressed as significant increase in acceleration,
With the development of fatigue, the gradual emergence of the increase of the vibration velocity and displacement, indicating the emergence of bearing fatigue, especially when testing for the bearings,
Careful attention to vibration is unstable swing (recommended analog pointer instrument can observe the very obvious),
If the swing, indicating the emergence of unstable vibration signal, acceleration is also large, especially the speed at the same time increases,
Likely to exist bearing "playing sets of" failure.
For new equipment, testing and acceptance, although the vibration is very small, in line with national standards, but there were minor parts of the bearing vibration amplitude of oscillation phenomena,
Exclude the bearing with the problem (playing sets), the most likely bearing geometry problems, such as bearing steel ring oval, elliptical rolling through the long axis position,
Gap may be due to reduced rolling moment caused by stuck, rolling up to squeeze, to produce sliding friction rolling element,
Each rolling element will appear in this sliding friction, causing instability to occur.
Special Note: When checking the rolling bearing, the bearing must not overlook the value of the acceleration change acceleration early warning of more to roll bearing failure.