Transcription of Standard Test Method for Measuring Viscosity at High Shear ...
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Designation: D 4683 04An American National StandardStandard Test Method forMeasuring Viscosity at high Shear Rate and HighTemperature by Tapered Bearing Simulator1 This Standard is issued under the fixed designation D 4683; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or Standard has been approved for use by agencies of the Department of Scope* This test Method covers the laboratory determination ofthe Viscosity of engine oils at 150 C and 13106s 1shear rateusing a tapered bearing simulator-viscometer (TBS Viscom-eter)2equipped with a refined thermoregulator system.
3.2.1 calibrationoils2—Newtonianoilsusedtoestablishthe reference framework of viscosity versus torque from which is determined the test oil viscosity. 3.2.2 contact ...
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