ROCKER ARM SHAFT WITH IMPROVED ABRASION RESISTANCE AND ROCKER ARM SHAFT/BUSH ASSEMBLY COMPRISING SAME

摘要

The present invention relates to a rocker arm shaft and a rocker arm shaft/bush assembly including a rocker arm shaft, and a rocker arm bush which encloses the rocker arm shaft, in which the rocker arm shaft has a surface on which minutely processed concave-convex portions are formed, thereby achieving excellent lubricative characteristics and as a result having excellent abrasion resistance.