五、滚动轴承滚动轴承的工作表面开始产生扩展性的疲劳剥落时,即表明它是处于极限应力状态。把这种初期的疲劳剥落作为一种有条件的正常的失效。在时间t内,轴承安全运转的概率=e~(-t)/τ_h。平均寿命(小时)为:平均动负荷能力系数C=1.5C,式中C—样本规定的被计算的轴承动负荷能力系数。平均当量动负荷为: Fifth, the rolling bearing rolling bearing work surface began to produce extensible fatigue spalling, it means that it is in the ultimate stress state. This initial spalling of fatigue as a conditional normal failure. The probability of safe operation of the bearing at time t = e ~ (-t) / τ_h. The average life expectancy (hours) is: The average dynamic load capacity coefficient C = 1.5C, where C-sample is calculated under the bearing dynamic load capacity factor. The average equivalent dynamic load is: