Determination of Rolling-Element Fatigue Life From Computer Generated Bearing Tests

Effect of Rolling Bearing Refurbishment and Restoration on Bearing Life and Reliability

“…Among the 62 rolling-element bearing endurance sets, 11 had one or no failure and could not be used for analysis (ref. 23). These data are plotted in figure 3 using the number of bearings failed rather than the number of bearings in a set.…”

“…However, by using a value of p = 4 a more conservative life prediction results that may be more commensurate with good engineering practice (ref. 23). Table 3 shows the effect on bearing life factors of using different values of the load-life exponent p for ball and roller bearings at three load conditions.…”

“…Bearing data reported shows that 90 percent of bearings will have lives that exceed that predicted (ref. 23). Because of this, the removal rate for cause of Level I reclaimed bearings would not be expected to exceed that predicted for new bearings placed into service using the Lundberg-Palmgren equations.…”

“…23) established a simple algebraic relation for the upper and lower L 10 life limits as a function of the number of bearings failed for any geometry. These limits are also plotted in figure 3.…”

Monte Carlo Simulation of Sudden Death Bearing Testing

“…The lives of the bearing components and the bearing were calculated using a commercial bearing code, COBRA-EHL, incorporating the Lundberg-Palmgren (9) equations (Eqs. [1] and [2] and Zaretsky's rule, Eq. [4]).…”