* Dept. of Bio Industrial Mechanical Engineering, Pusan National University*Dept. of Mechanical Engineering, Kyungpook National University(Received March 15, 2012; Revised April 30, 2012; Accepted May 3, 2012)Abstract − In this paper, we investigated the friction characteristics of W100°oL25m ellipse type surface pattern,on bearing steel. These characteristics are researched by utilizing a pin-on-disk wear test machine, under variousvelocities and other conditions. The reduction of friction is a necessary requirement for the improved efficiencyof industrial parts. As the speed increases, there is a decrease in the effect of the dimple of friction characteristicin low velocity, with substantially little change to density. Conversely, as the load increases, the test direction ofellipse type dimple pattern, resulting in a difference in the texture of these two components. At a dimple densityof 7.5% the friction characteristic is easily demonstrated, with a consistent change in both speed and load.Keywords − dimple pattern(딤플 형상), surface texturing(표면 무늬), friction characteristics(마찰 특성),ellipse type(타원 형태)