![]() ![]() ![]() The viscosity index helps us to measure the change in temperature in hydraulic oil. ![]() The measurement of viscosity in hydraulic oil is taken in Centistokes (cSt) and most commonly at temperatures of 40☌ and 100☌. On the other hand, lower viscosity means the oil is easier to pass through the system. Moreover, high viscosity means the oil is thicker and is more difficult to transport through a system. For example, if viscosity increases, then it will take longer for the oil to pass through the hydraulic system. The hydraulic oil viscosity depends on how smoothly it flows. This is particularly important as applications become more demanding. Hydraulic oil viscosity needs to be able to work effectively to enable smooth operation no matter the temperature. A temperature drop makes the oil move less easily and it becomes more viscous. Similarly, when you put cooking oil into a pan and heat it up, the oil moves faster the longer it is heated. For instance, if the temperature of the oil increases then the viscosity decreases. In hydraulics, there’s a direct relationship between hydraulic oil viscosity and its temperature. Hydraulic oil viscosity is vital when choosing the right hydraulic oil for your system. ![]()
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