![]() ![]() Non synthetics are made by blending mineral oil (a petroleum product) with a lesser amount of neatsfoot oil. Kinematic viscosity is often measured in the CGS unit centistokes (cSt), which is equivalent to 0.01 stokes (St). Dependent upon the application there are other qualities that the boutique syn recipe can enhance. The goal is develop base stocks with much higher percentages of these and that are more chemical stable. Long chain molecules occur in various mineral, animal and vegetable oils. Whether crafted from crack components in refinement or non petroleum derivitives in the process plant, the goal of synthesis is to develop lubricants with properties not neccessarily related to those of their components. This classification defines 20 viscosity grades in the range of 2 to 3200 square millimeters per second (1 mm2/s equals 1 cSt) at 40C (104F). Each Viscosity Reference standard is supplied with a comprehensive Certificate of. Spread rate, film stength, shear, evaporation, base stock compatibility and many more parameters contribute to making a best choice.Ī synthetic can be made from the components of petroleum and this is sometimes done in the refining process where elements and compounds are recombined with additives to knit longer chain more stable (resistive to oxidation) molecules. Nominal Viscosity Standard - 4.5 cSt at 40C, 1.6 cSt at 100C, 500 mL. Click to expand.Viscosity is a key indicator of the suitability of a particular lubricant for a particular horological purpose but not the sole factor in making this determination. However, since the viscosity of most fluids is below 1 Pa-s (See Table 1), the millipascal-second (mPa-s) is often used instead. ![]()
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