Morgan RSM has been pervasive applicated on high speed wire rod production for its compact-sized,high quality products,high productivity,and so on. The speed ratio with different manufacturing technique requirements can be combined by adjusting 9 clutches. The gears used in which,worked with tapered roller bearings with pre-tightening force. The reliability of the equipment would be seriously reduced by off-gear caused by the abrasion of bearings under the working condition. A localization improvement on rolling bearing units of RSM on high speed wire rod production is described,which would be available for similar project.