The meaning of rolling bearing condition monitoring and diagnosis

Rolling bearing is the most widely used in all kinds of rotating machinery, a kind of general machinery parts, its running state is often directly affect the normal performance of the whole machine ( Including accuracy, reliability and life, etc. ) 。 Compared with other mechanical parts, rolling bearing has a big characteristic, this is the life of discreteness is large, which is of the same material, same process, the same production equipment, the same workers to work out a batch of bearing, the difference in their life. Due to the bearing of the points, appears in be used actually such a situation, some bearing has been considerably more than design life and work is still intact, and some bearing is far from to meet the design life appeared in all kinds of faults. So, if carried out in accordance with the design life of bearing maintenance regularly, is certainly will appear the following situation: on the one hand, for the work of more than design life and good bearing down as scrap processing, cause waste; , on the other hand, do not meet the design life and the failure of bearing or stick to a regular maintenance down to scrap, making machinery in bearing failure within this period of time before and after remove the working accuracy of the fall, or to the maintenance time is a serious fault, cause the whole mechanical severe accident. That regular maintenance for important USES of bearing is very unscientific, must carry on the condition monitoring and fault diagnosis, change traditional maintenance for as or predicting maintenance maintenance regularly, it can not only prevent mechanical working accuracy, reduce or eliminate the accident, but also can maximize the bearing work potential, save money, is of great significance. Therefore, condition monitoring and fault diagnosis of rolling bearing already has attracted the attention of a great many scientific and technical personnel at home and abroad. Extension reading: rolling bearing is bearing preload preload installation to take certain measures to make the rolling element bearing, and produce certain predeformation between inside and outside the circle, to keep the bearing in the compaction state of a kind of both internal and external ring measures. Bearing preloaded points of two kinds of radial and axial preload preload, usually USES mostly is axial preload. Can be divided into the positioning of axial pre-tightening preloaded and two kinds of constant pressure preload. : 1, positioning preload refers to locate preload bearing axial relative position in the use of a preloaded remain unchanged. : 2, constant pressure preload is letting constant pressure preload bearing axial pre-tightening load remains the same in using a way of axial preload.