A Study Of Sunflower Oil Performance As A Gear Lubricant

Siti Sakinah Munirah, Ishak (2013) A Study Of Sunflower Oil Performance As A Gear Lubricant. Project Report. UTeM, Melaka. (Submitted)

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Abstract

In manufacturing and automotive industry, gears are the most crucial character in those fields. A set of gears is used to provide a method to change the torque from rotating object in order to move a certain load. Continuous metal to metal contact will cause rapid wear without sufficient lubrication provided. Lubricant must give protection to the gear in against corrosion. Gear lubrication is not an easy matter. Proper selection of good lubricant properties can prolong gear life and enhance the reliability of gearbox. Instead of synthetic lubricant, vegetable based oil has large potential in replacing other lubricant especially synthetic type lubricant. Vegetable oil is highly recommended, though it gives no harm effect towards our nature as it exhibit a biodegradable and renewability properties. Many study has prove that vegetable oil chemical structure has a great influences towards its behavior, especially physical properties. In this study, sunflower oil is used in the gearbox. Its composition has affected the temperature ability where vegetable oils have poor low temperature behavior. Triglycerides structure and fatty acids composed in vegetable oils give instability in oxidation. When selecting lubricant, temperature at the contact area and ambient temperature are important factors to be considered. Besides, VI plays an important character in gear lubrication. By using experimental method and lubrication analysis, vegetable oil is found to have high VI up to 241 and has poor oxidation stability. It‟s also has poor low temperature behavior. These two disadvantages concluded that sunflower oil has low performances as a gear lubricant.

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