On the other hand, the kinematic viscosity tells about the speed the fluid reaches when a particular force is applied to the fluid. VISCOSITY COMPARISON CHART Material Viscosity (centipoise) Water 70F 1-5 Blood or Kerosene 10 Anti-Freeze or Ethylene Glycol 15 Motor Oil SAE 10 or Com Oil 50-100 Motor Oil SAE 30 or Maple Syrup 150-200 Motor Oil SAE 40 or Castor Oil 250-500 Motor Oil SAE 60 or Glycerin. The VI correlates the amount of viscosity change for a given oil, compared to two reference oils having the highest and lowest viscosity indices at the time the. This might surprise you if youre thinking that gear. The viscosity index (VI), which is calculated with. For example, the chart indicates that an SAE 50 engine oil and an SAE 90 gear oil are the same viscosity. Weve compiled a list of oils from the major manufacturers to help your analysis. Temperature differences of, for example, 10C do not lead to identical number jumps in viscosity changes. When choosing between the two viscosities, it is worth noting that dynamic viscosity tells us about the force required to move the fluid at a certain speed. Oil Viscosity Chart: Compare, Choose, and Subsitute Industrial Oils Comparing Viscosity and Choosing the Right Industrial Oil Viscosity is a measure of how thick an oil is, and is essential for proper machine lubrication. Drag Coefficient - The drag coefficient quantifies the drag or resistance of an object in a fluid environment. Lubricants of a given ASTM or BSI grade are slightly more viscous than lubricants of the corresponding ISO grade.The larger the force or stress needed to move the plate, the more viscous the fluid is. Gravity - Viscosity at 20☌/68☏ and 50☌/122☏ for more than 120 crudes is shown as function of specific gravity15☌/60☏. Kinematic Viscosities ISO 1500 680 460 320 220 150 100 AGMA Grade SAE Crankcase 15M. A viscosity blending chart for use with oils is also shown below. Viscosity grade numbers of the ISO are the same as those of ASTM (The American Society of Testing and Materials) and BSI (British Standards Institution), with the difference that the viscosities for the ISO grades are measured at 40 ☌, while those of the ASTM and BSI are measured at 100 ☏ (37.8 ☌). The term viscosity refers to the thickness or flow-ability of a liquid. Viscosity conversion tables for use with the above described viscosimeters are shown below. Viscosity table/chart as per ISO 3448 for industrial fluids. The ISO system is primarily used for hydraulic oil, industrial oils, such as turbine oils, compressor oils and others. ISO VG are based on kinematic viscosity of the lube oil/fluid at 40☌. ISO viscosity classification system or ISO Viscosity grades also called ISO VG contains 18 viscosity grades. Lubricant viscosity performs a prime role against friction and wear. VISCOSITY CONVERSION CHART 1 (poise) 1 (gr/cm.sec) TTnS Inc. Settled in 1975 by a joint committee of International Standards Organization (ISO), American Society for Testing and Materials (ASTM), Society for Tribologists and Lubrication Engineers (STLE), British Standards Institute (BSI), and Deutsches Institute for Normung (DIN). 100 Centipoise 1 Poise 1 Centipoise 1 mPa s (Millipascal Second) 1 Poise 0.1 Pa s (Pascal Second) Centipoise Centistoke x Density Newtonian materials are referred to as true liquids since their viscosity or consistency is not affected by shear such as agitation or pumping at a constant temperature. A viscosity grades classification or standard known as the ISO VG (International Standards Organization Viscosity Grade). The new chart utilizes the historical work at high viscosities and extends the linearized low viscosity range to 0.04 cSt and below. For engine oil check SAE J300 and SAE J306 for gear oils. ISO-VG (Viscosity Grade) classes apply only for industrial lubricating oils. Industrial fluids kinematic viscosity according to ISO 3448, DIN 51519
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |