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Putting the simple back into viscosity
Putting the simple back into viscosityWritten by John SanderBrief Descriptions of Viscosity TestsASTM D2983 Low-Temperature Viscosity of Automotive Fluid Lubricants Measured by Brookfield ViscometerThe low-temperature, low-shear-rate viscosity of gear oils, automatic transmission fluids, torque and tractor ...
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Putting the simple back into viscosity
Putting the simple back into viscosityWritten by John SanderViscosity ClassificationsFortunately for the end-user, various technical societies have created classifications that are used by lubricant manufacturers when formulating the proper viscosity grade of lubricant needed for their equipment. These ...
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Putting the simple back into viscosity
Putting the simple back into viscosityWritten by John SanderViscosity ConsiderationsVarious conditions must be considered when specifying the proper viscosity of a lubricant for a given application. These conditions include the operating temperature, the speed at which the specific part is moving, and ...
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Putting the simple back into viscosity
Putting the simple back into viscosityWritten by John SanderViscosity DefinedAs mentioned above, viscosity is a physical measurement of a fluid's internal resistance to flow. Assume that a lubricating fluid is compressed between two flat plates, creating a film between the plates. Force is required to ...
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Putting the simple back into viscosity
Putting the simple back into viscosityWritten by John SanderAbstract: Simply stated, viscosity is defined as the internal resistance of a fluid to flow. That doesn't sound too difficult, does it? Unfortunately, new temperature, speed and pressure demands on lubricating fluids have changed over the years, ...
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Why must the oil in vehicle be changed?
Why must the oil in vehicle be changed?Oil oxidationOil reacts with the oxygen in the air and coupled with a high temperature, this oxidation process is accelerated. A temperature increase of 10 - 20 degree doubles the reaction speed. The oil becomes more aggressive from the point of view of corrosion, ...
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Why must the oil in vehicle be changed?
Why must the oil in vehicle be changed?Wear particlesWhen the vehicle is being driven, the oil must work as a very thin (approx. 1/1000th mm) lubricating film and at a pressure of 10(9)N/M2.As a comparison, this pressure is equivalent to the pressure when working in the ocean at a depth of 100 km.Sometimes ...
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Cold Cranking Simulator (CCS) Viscosity Standards
Cold Cranking Simulator (CCS) Viscosity StandardsDynamic mPa.s (cP)
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ASTM D86 for distillation of petroleum products
ASTM D86 for distillation of petroleum productsASTM D86 for distillation of petroleum products at atmospheric pressure13. Precision and Bias13.1 Precision - The precision of this test method, as determined by the statistical examination of the interlaboratory test results, is as follows:NOTE 25 - The ...
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ASTM D86 for distillation of petroleum products
ASTM D86 for distillation of petroleum productsASTM D86 for distillation of petroleum products at atmospheric pressure12. Report12.1 Report the following information (see Appendix X5 for examples of reports):12.2 Report the barometric pressure to the nearest 0.1 kPa (1 mm Hg).12.3 Report all volumetric ...
