Tribological investigation of RBD palm olein in different sliding speedsusing pin-on-disk tribotester

A tribological investigation, in terms of the coecient of friction and wearresistance of rened, bleached and deodorized palm olein, was conducted using a pin-on-disktribotester. palm oil was selected as a candidate due to its superior tribological propertiesand its large production, which can lead to the mass production of bio-lubricant. thematerial of the pin and the disk is titanium (ti6al4v). the experiments were conductedfollowing the astm g99. the normal load was 9.8 n and the observation time was 1hour. the sliding speeds were 0.25 m/s and 1 m/s. in this research, only 5 ml of the testlubricant was applied at the beginning of the experiment to investigate the capability of thelubricant to maintain its function. to make sure the lubricant does not subside due to thecentrifugal force from the rotating disk; a groove was crafted on the disk. in this research,the coecient of friction and wear rate were calculated. from the analyses, the coecientof friction calculated for palm olein was the lowest for both sliding speed conditions, whilethe wear rate obtained showed that it was ecient lubricating oil at low speed, with a highwear rate at high speed.