Imported bearing detection method

Imported bearing detection method is in commonly buy imported bearing, at the moment of installed will detect bearing will turn to or run, with no bearing is not running, one way is to test the bearing under the normal operation of the method, we study a down. Used in the operation of the imported bearing in vibration measuring instrument detection, although ISO2372 standard is to judge excessive vibration, vibration velocity but want special attention in the actual bearing the change of the acceleration value, imported bearing damage process is mostly the fatigue damage in the early period, performance that can generally show the obvious with higher speed, with the development of fatigue, vibration velocity and displacement increases gradually, heralds bearing in the fatigue damage. Especially for the imported bearing test, pay careful attention to the vibration value is instability to swing, Recommend the use of analog pointer instrument, can observe very obvious) , if there is a swing, indicates the unstable vibration signals, the acceleration is also big, especially the speed of increase at the same time, is likely to 'play' bearing fault. For new equipment, acceptance testing, while the vibration is very small, in line with the national standard, but in the vibration of the bearing parts appear small oscillation phenomenon, in addition to bearing fit problem ( Play set) , probably bearing geometry problems, such as bearing rims ellipse, rolling body through the long axis of the ellipse a place may be caused by gap decrease instant card roller die, subsequent continued squeezing roller, make the rolling body produces sliding friction, each roll body will appear in the sliding friction, causing unstable signal. The problems encountered in the detection of shanxi 220 kw new motor, the collapse of the ground, bearing, prove that determine exactly right. When special tips: check the rolling bearing, must not ignore the change of bearing acceleration value. Acceleration is more able to early prediction of the rolling bearing fault.