![]() Hydraulic oil contamination plays a major role in hydraulic systems failure the causes of contamination are: ![]() Most doped hydraulic oils’ characteristics dwindle rapidly with ageing and overheating therefore, doped oils are not common and used only for special purposes. The oil is known as doped, and the chemical additive improving certain physical or chemical characteristics of oil is known as dopes. Hydraulic oil additives are the chemical additives added to hydraulic oil to improve and upgrade certain physical or chemical characteristics depending on oil intended use. Water freezes, do not lubricate and becomes oxidized when in contact with air, while vegetable oil decomposes and rapidly becomes oxidized in the presence of heat and air. Certain fluids cannot be used in hydraulic systems due to their physical and chemical characteristics, such as water or vegetable oil. The hydraulic fluid conveys energy in the form of flowrate and pressure.Īlthough all liquids would qualify to convey energy in hydraulic systems, the liquid requires certain physical and chemical characteristics to qualify as hydraulic oil. Hydraulic oil (hydraulic fluid) is a synthetic or mineral fluid used to transfer power in hydraulic equipment and machinery.
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