The method of prediction of the life of the dry friction bearing unit with a solid grease coating

The method is considered of prediction of wear of full-scale friction units by the temperature dependence of the integral parameter (Φ, the factor of wear) governed by the conditions of operation derived from the respective type of interactions. The temperature dependence of this parameter can be found from the results of laboratory tests of a model random-configured pair. It is shown that the calculated life of the bush-shaft coupling with the solid-grease VNIINP-212 determined from the factor of wear of this coating obtained with end-to-end tests is 4–45% different from the actual life.