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The basics of lubricating grease and in-use testing
The basics of lubricating grease and in-use testingWritten by Amy Rishell and John SanderApplications by Thickener TypeGreases are usually marketed and recognized by thickener type. The OEM or manual often will specify that a grease of "X" thickener type is needed for an application. The three basic ...
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The basics of lubricating grease and in-use testing
The basics of lubricating grease and in-use testingWritten by Amy Rishell and John SanderGreaseGrease is used in many different industries, including automotive, chemical, aircraft, manufacturing plants, power generation, and water purification plants. It is used in a variety of applications, including ...
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The basics of lubricating grease and in-use testing
The basics of lubricating grease and in-use testingWritten by Amy Rishell and John SanderIntroductionLubricants are applied to moving equipment for several reasons, including friction reduction, heat removal, corrosion prevention and contaminant removal. The most commonly understood reason lubricants ...
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Viscosity classification
Viscosity classificationSAE-class for Engine Oils and Transmission Oils(SAE = Society of Automative Engineers)ISO-class for Industrial Lubricating Oils(ISO = International Standards Organisation)There have been many different measurement units to express the viscosity or lubricating oils, such as Engler ...
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Kinematic viscosity
Kinematic viscosityKinematic viscosity, with unit measurement mm2/s or centistoke (cSt) is the relationship between dynamic viscosity in mPa and the density of the oil in g/cm3 at the temperature the viscosity is to be measured. Within the oil industry the viscosity is measured by determining the time ...
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Dynamic viscosity
Dynamic viscosityThe viscosity of a fluid can be called absolute or dynamic and has unit measurement mPa or centipois (cP).To precisely produce the dynamic viscosity with the help of a viscosimeter is a complicated and time consuming procedure. The usual way to measure dynamic viscosity at low temperature ...
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Viscosity
ViscosityGeneralViscosity is a measurement of the internal friction of the oil or of its resistance to flow. It does not however give any indication as to the quality of the oil, but is nevertheless perhaps the most significant characteristic of a lubricating oil. The viscosity of the oil should be adapted ...
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Other quality standards
Other quality standardsAutomatic Transmission FluidsThe first, more generally used quality standard for this fluid was General Motors "Automatic Transmission Fluid, Type A" issued in 1951. This standard has been subsequently modified and, among other things, suffix A was added in 1957. Fluid according ...
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MIL - American military specifications
MIL - American military specificationsTransmission oilsMIL-L-2105If an oil is to correspond to this specification, it must be a product which has been tested and found to satisfy certain clearly defined demands based on full scale tests. During the tests, checks are made concerning separation, foaming, ...
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MIL - American military specifications
MIL - American military specificationsEngine oilsThe original API classification became insufficient at the long run and the American army therefore made its own specifications. This system (MIL) specifies the quality of the oil partly in generaly terms and partly in engine tests with demands on the ...
