1. Rolling bearings in non-stable variable load cycle operation, the fatigue strength attenuation decreased, which is a long-term fatigue damage cumulative continuous process. Grasp the actual damage to rolling bearings in operation, to ensure the bearings in the late reliable equipment overhaul, rolling whether to replace them, make the right judgments.

Rolling bearing work, their parts in the alternating stress, contact fatigue strength of the decline in lead to bearing damage the major reasons for the failure. Based on the relationship between the rolling bearing life and load (PL), combined with the bearing of injured work experience, such as the various stages to withstand the equivalent of moving the negative Pi and running li, Rolling in the progressive damage process, the fatigue strength declining be discussed, given a specific injury Rolling fatigue strength formula.

2, the fatigue strength attenuation recursive

Bearing life and their exposure to the load size, the greater the workload, the shorter the life. The total number of revolutions of bearing fatigue pitting operation called life L.