The Effect of Wear on Rolling Elements and Treadmills on the Durability of Rolling Bearings

On the basis of experimental data, the dependences of the wear intensity of treadmills on the magnitude of contact stresses are obtained. The experiments were carried out on a tribometer at fi ve different contact stresses and, based on the experimental data obtained, graphs of the dependence of the coeffi cient of wear intensity of the treadmill rings on contact stresses were constructed. The author have developed a program for calculating the durability of a bearing, taking into account the slippage of rolling elements at a certain discrete value of the radial clearance. A method for determining the durability of rolling bearings, taking into account wear, has been developed. The results of calculating the durability of the bearing, taking into account the wear of rolling elements and treadmills, are presented. It is shown that the error in determining durability without taking into account wear, depending on the operating conditions of the bearing, can reach 50%. The developed technique makes it possible to use it to calculate the durability of roller and ball bearings with increased reliability requirements.