Increasing the durability of articulated spherical bearings through the use of a silver-based antifriction coating

This article provides a method for determining the durability of articulated spherical bearings. The results of determining the coefficient of wear intensity in a friction pair of steel SHX-15 and an antifriction material based on silver with the addition of 6% molybdenum disulfide are presented. The experimental values of the coefficient of wear intensity of the antifriction material were approximated by an analytical dependence in the form of a polynomial of the fourth degree with respect to contact stresses. The approximation error did not exceed 10%. This technique allows us to determine the number of cycles of operation of the bearing up to the limit value of wear of the antifriction material, taking into account changes in contact stresses during wear. The use of a silver-based antifriction coating increases the durability of articulated bearings.