Estimation of bearings durability under random loading mode

The article considers a solution of the task of the bearings failure number forecasting. The form of bearings loading under operating conditions is defined by means of a particular radial load distribution law corresponding to a light, an average normal, an average equiprobable and a heavy operating mode. The bearings failure number forecasting is carried out on the basis of nonparametrical statistics and computer simulation. The results of roller bearing 2207 parameters calculation show that during the switch from a light mode to a heavy one a probability of its failure rises by a factor of four.