Abstract: Abnormal damage of Babbitt Alloy being stripped offand cracking of oil film bearing shortens its service life.By analyzing the backup roller oil film bearing of 2050rolling mill of BaoShan Steel Co. by 3D-contact BEM, the pressuredistribution on bearings is obtained. Contact models of oil film bearingcan simulate the actual restricted conditions and externalloading. It is observed that unreasonable restriction results insevere non-uniformly distributed load on oil film bearing, and carrying capacityof bearings can be improved through changing restricted conditions. The non-uniformly distributed load is lowered and oil filmbearing's service life is prolonged. This result provides a theoreticalbasis for studying the burnout of oil film bearings and abnormal damage ofBabbitt Alloy being stripped off and cracking in the bearing.Owing to the consideration of influence of elastic distortion, this methodis advantageous in high precision and convergence speed.