The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. What is Viscosity Index and when is it important Viscosity Index can be described as the rate by which viscosity changes with the change in temperature. The cookie is used to store the user consent for the cookies in the category "Other. This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". When it comes to synthetics, my theory is that if an oil of a certain grade, say 0w30, has a lower VI than the 0w30 of. In general, the wider the vis spread of a multi-vis oil, the higher the VI. These cookies ensure basic functionalities and security features of the website, anonymously. quote: Originally posted by G-Man II: VI is nothing more than an 'indicator' of an oils ability to resist viscosity change with change in temperature. Prior to understanding the viscosity index, we need to comprehend the physical property of fluids called Viscosity. Necessary cookies are absolutely essential for the website to function properly. Noria’s cutting-edge lubrication management platform Get Noria books, training, study material and more Our web publication for reliability & maintenance pros Our lubrication-focused print magazine and website Interactive tools for lubrication optimization Low VI means the viscosity changes considerably at different temperatures. The VI shows the influence of temperature on an oil‘s viscosity and is an important parameter for the oil’s lubrication properties.
Viscosity Index of lubricants The viscosity of oils and base oils of lubricating greases from Klber Lubrication can be determined by means of the known kinematic viscosity at 40 C and 100 C. Kinematic viscosity at 40 and 100 ☌ is the input parameter for calculation of the Viscosity Index (VI) according to ASTM D2270. Noria’s annual event for reliability professionals The viscosity index according to DIN 2909 is calculated by comparing the change in viscosity of an oil with the two oils as a reference. Learn from Noria experts in person across North Americaīenchmark your lubrication program against industry averages Get fully interactive, live training from anywhere Access study materials for certification testsīuild a foundation in lubrication and oil analysisīecome an oil analysis expert or program leaderĭevelop strategic expertise for reliability leadersīuild custom training packages for large teamsĮnsure compliance with industry standardsĪn introduction to optimal lubrication practices
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