"More than enough on the number of the same batch of bearings

Cylindrical roller bearings in the front completely destroyed, it provides users find enough time, do not ignore the existence of this friction, it will make riding slowed down, so that the consumption of a greater physical distance slower. If the fine roughness of the surface, if there is adequate oil film thickness, the surface stress generated by chance quite low, which is why the choice of suitable for lubricating oil for the reason, however, if the load exceeds the pressure the film's pu value (fatigue load limits, such as high speed, high pressure shock), then the material fatigue will come sooner or later.
Cylindrical roller bearings metallurgical quality of the data is the impact TIMKEN bearing primary elements of effective early fall. Followed by metallurgical skills (such as bearing steel vacuum degassing, etc.) to improve the original data quality improvement. Elements of the original data quality analysis in the bearing out effect in the proportion had clearly decreased, but it is still the primary influence bearing out effect one of the elements. Can proper bearing selection is still valid parse out the elements necessary to ponder.
Cylindrical roller taper roller bearing out effective analysis of the primary obligation is based on a lot of scenes information, analyze data, and efficient way out to identify the formation of the primary elements of the bearing out effect, so that targeted improvement measures proposed to extend bearing service constitutes the execution , to prevent the sudden onset of early bearing out effect.
????(1), affecting the life of cylindrical roller bearing elements are very much dejected, unable to assess fully the premise or via standardized test to eliminate, which forms bearing fatigue life has a great practical discrete, and thus the expression of bearing fatigue life parameters additional lifetime L10, R281 in the ISO specification for referral L10 understand the meaning of the following rules:
"More than enough on the number of the same batch of bearings, the additional number of revolutions L10 life (or at constant speed with a number of hours to disclose the performance revealed that 90 per cent of the bearings before they occur in dejected exploitation can reach or exceed this the number of revolutions (or hours). "So far, the world's nations have to obey these rules.
????In the United States and some other countries, but also with the use of the concept of value in life. LM is the median number of lifetime as cylindrical roller bearings median life, referring to a 50% of the bearings can be reached before the fatigue spalling or exceed the total number of revolutions, speed or necessarily the number of tasks from time to time, median Life is not a group of LM arithmetic average value of the bearing life. LM ordinary median life expectancy is about five times the extra life.