I golshokouh - Department of Mechanic, Izeh Branch, Islamic Azad University, Izeh, Iran
s syahrullail - Faculty of Mechanical Engineering, Universiti Teknologi Malaysia,۸۱۳۱۰, UTM Skudai, Johor.
e kianpour - Department of Mechanic, Najaf Abad Branch, Islamic Azad University, Najaf Abad, Iran.

The sources of petroleum are getting lower from day to day and petroleum is a major source for environmental pollution. Many researchers are trying to find other alternative, renewable and green energy source to substitute the petroleum in every sector. One of the best replace sources for petroleum is bio oils. In this paper, a comparative study of friction and wear was carried out using four balls tester. Palm Fatty Acid distillate (PFAD) and additive free paraffinic mineral oil were used as lubricant in this research. PFAD is a product from refine crude palm oil. It is exist in light brown solid at room temperature. For this wear test, the experimental research conditions with comparing two kinds of oils with ASTM condition which the load applied is 392N. The sliding speed was 1200rpm under lubricant temperature of 75 degree Celsius. The experiment was run for 3600 seconds. The experimental results demonstrated that the PFAD exhibited better performance in term of friction and wear compared to paraffinic mineral oil.

PALM FATTY ACID OIL, FOUR BALLS, VEGETABLE OIL, WEAR, FRICTION