The self鄄lubricating bearings which were made up of PTFE and a ultrahigh strength steel
30CrMnSiNi2A were investigated by numerical simulation and experiments. The failure mode and influence of friction
surface on the friction properties were analyzed. The wear mechanism was also studied based on the observation of the
worn friction surface. It was found that the failure of self鄄lubricating bearing is attributed to the damage of lubricating
layer,which is improved by excellent friction surface. Owing to the transferred lubricating film made by PTFE fabric,
the friction coefficient reduced eventually.