The most frequently used systems of US customary, or Imperial, units are the British Gravitational (BG) and English Engineering (EE). Fill in zero (0) in the weight percent column (Wt%) if Base oil #3 and-or Base oil #4 are not part of the mixing viscosities. The kinematic viscosity of water at 20 C is about 1 cSt. Both Turner and Mariner use greases of this viscosity. For general purpose greases in mounted ball bearings, 220 cSt viscosity will be widely found throughout the industry. Avoiding a scientific deep-dive, water is measured at 1 cSt, whereas some kinds of honey near 1,000 cSt. The Viscosity Analysis can help to determine if both the baseline and used oil are within specifications. You can use this calculator to predict mixing viscosities of 2-4 base oils. One method of measuring viscosity is centistokes (cSt) at 40°c. They have well-defined, wax-free isoparaffinic structures that contain relatively unbranched side chains ofpredetermined chain length. Viscosity temperature is not required but must be the same for all base oils viscosities. SpectraSyn Polyalphaolefins (PAO),2 -10 cSt Description ExxonMobil’s low viscosity SpectraSyn PAO products are hydrogenated olefin oligomers manufactured by the catalytic polymerizationof linear alphaolefins. Fill in zero 0 (or leave default “0”) in Wt % if not included in the blending calculations. Please note: Leave the default value of “1” in the viscosity field if blending less than two liquids. If you don’t want to include 3rd and 4th base oils, fill any value (>1) in the viscosity cell and zero (0) in the Wt%.Ĥ- Repeat the same for Base Oil #4 by filling in the viscosity and Wt% of the Base oil.ĥ- Click Calculate to predict the mixing viscosity of the blend. Viscosity Calculator #3ġ- Fill the viscosity of Base oil #1 and weight percent (Wt%) in the third (Wt%) column.Ģ- Fill in the viscosity of Base Oil #2 and weight percent (Wt%) in the next column.ģ- Fill in the weight percent (Wt%) and Base oil #3 viscosity in the 3rd row.
220 CST VISCOSITY ISO
For example, a lubricant with an ISO grade of 32 has a viscosity within the range of 28.8-35.2, the midpoint of which is 32.Module #3: Mixing viscosities calculator to blend or mix more than two base fluids. Each ISO viscosity grade number corresponds to the mid-point of a viscosity range expressed in centistokes(cSt) at 40☌. To find the exact cp of your fluid: cp cSt x (weight per gallon x 0.120). The kinematic viscosity of a liquid can be looked upon as the liquid's resistance to flow under its own gravity head. The centistoke (one hundredth of a stoke) is more generally used. Many petroleum products are graded according to the ISO Viscosity Classification System, approved by the international standards organization (ISO). Viscosity and Specific Gravity Values AVAILABLE IN: English Viscosity Values and Specific Gravity Centipoise centistokes x specific gravity where specific gravity is assumed to be 0.8 (except for water). In the metric system, the unit of kinematic viscosity is the square centimeter per second or the stoke. Temperature Choose the actual unit of temperature: ☌ ☏ K °R See Water and Heavy Water - thermodynamic properties. SAE 90 to 250 and 20 to 50 specified at 100☌. while the kinematic viscosity is given as cSt, m 2 /s, and ft 2 /s Note Temperature must be within the ranges 0-370 ☌, 32-700 ☏, 273-645 K and 492-1160 °R to get valid values. For measurement of kinematic viscosity of dark Newtonian liquids, measure kinematic viscosity of liquid and to study lubricating oils, upper bulb may be used for determining the degree of non-Newtonian behavior of the sample. Note Viscosity conversions are based on fluids with specific gravity of one. The viscosity of each grade ranges ± 10 from the mid-point. 2) Water at 68.4oF (20.2oC) has an absolute viscosity of one - 1 - centiPoise.
This classification applies mainly for use with industrial lubrication. Viscosities based on 96 VI single grade oils.Įquivalent viscosities for 100° & 210☏ are shown The result is known as the International Standards Organisation Viscosity Grade - ISO VG. Viscosities can be related horizontally only
0 kommentar(er)
