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What Does A Lubricant's ISO VG Number Mean?

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The term "International Standards Organization Viscosity Grade," or simply "ISO VG 46," is reported in values ranging from 2 to 1500. This figure is crucial since choosing the proper oil for your machinery depends primarily on the viscosity of the lubricant.

Certain that equipment is manufactured all over the world, it was vital to establish a standard that equipment users could use to determine the best lubrication for a given piece of machinery.

iso vg 46



A fluid's viscosity is described as its resistance to flowing at a particular temperature. Viscosity can be defined more simply as a lubricant's thickness at a specific temperature.

Kinematic viscosity, which evaluates a fluid's flow under the influence of gravity and is expressed in centistokes or CST, is used to measure ISO VG. The Capillary Tube Viscometer Test is one of the most popular testing tools. Oil is used in a glass capillary U-tube for this test, which is carried out at a regulated temperature of 40°C (104°F). The ideal operating temperature for equipment is thought to be that one.

ISO VG 46 is a specialty base oil with a medium to high viscosity that is used as a Group I replacement in industrial lubricants and clean metalworking fluids. Due to its ideal viscosity and VI, ISO VG 46 is well suited for the blending of premium industrial lubricants like ISO VG 46 hydraulic oils and slideway oils.

Because of its appropriate flash point, moderate volatility, and high VI, ISO VG 46 can be utilized as a foundation oil in formulas for plain metal cutting fluids. Ferrous and non-ferrous materials can be turned for use in a variety of difficult activities. Gear shaping, including hobbing or shaving, and tapping operations, are other metals cutting neat oil applications.

This oil is specifically manufactured to meet the needs of hydraulic system makers when the highest demands are placed on high pressure, high temperatures, or fast speeds. For hydraulic systems of the Vickers, Gerotor, Green, HPM, Denison, Cessna, Hydreco, and Worthington kinds, it is advised. Additionally, it is appropriate for lubricating air screw compressors, and compressed air systems, and reducing gears, bearings, and workshop equipment.

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