球面滚子轴承, 密合度, 接触应力, 凸度设计

Two methods to reduce the stress value were presented herein according to the problems of stress distribution of spherical roller bearing: first, optimize the ratio of osculation coefficient under different load conditions; second, divide the available length of the roller to several sections evenly, and the radius of the roller between every section is different. Based on Boussinesque plastic contact theory, a numerical method was used to develop a computer program to calculate the stress on the roller-race contact areas. Compared to Hertz theory, the contact stress and other data of the program are exact enough. The contact stress is reduced to a large extent by the crown profiled method, accordingly the life of the bearing increases significantly.

spherical roller bearing, ratio of osculation coefficient, contact stress, crown design