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ASTM D217 for cone penetration of lubricating grease
6. Apparatus6.1 Penetrometer, in accordance with A1.1. The instrument shall be capable of indicating depth in tenths of a millimetre. A sketch of a generic penetrometer is shown in Fig. 1.6.2 Standard Penetrometer Cone, in accordance with A1.2, is suitable for all penetrations. An optional penetrometer ...
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ASTM D217 for cone penetration of lubricating grease
5. Significance and Use5.1 These cone penetration tests not only evaluate the consistency of lubricating greases over the full range of NLGI numbers from 000 to 6, but also evaluate the consistency of stiff greases having penetration numbers less than 85. In contrast, Test Method D 937 is aimed at petrolatums ...
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ASTM D217 for cone penetration of lubricating grease
4. Summary of Test Method4.1 For unworked penetration, the sample is brought to 25 more or less 0.5°C (77 more or less 1°F) in a worker cup or other suitable container. The cone assembly of the penetrometer is released and allowed to drop freely into the grease for 5 more or less 0.1 s. Three determinations ...
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ASTM D217 for cone penetration of lubricating grease
3. Terminology3.1 Definitions3.1.1 consistency, n-of lubricating grease, the degree of resistance to movement under stress.3.1.1.1 Discussion - The term consistency is used somewhat synonymously with penetration. Generally, consistency refers to the worked penetration of a grease.3.1.2 lubricant, n-any ...
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ASTM D217 for cone penetration of lubricating grease
1. Scope1.1 These test methods cover four procedures for measuring the consistency of lubricating greases by the penetration of a cone of specified dimensions, mass, and finish. The penetration is measured in tenths of a millimetre.NOTE 1 - The National Lubricating Grease Institute (NLGI) classified ...
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Procedure for testing highly viscoelastic oils using the manual CCS instrument
1.1 Test samples can exhibit different behavior at low temperature in the CCS, thereby requiring procedural variations. Some highly viscoelastic samples will spiral toward the rotor shaft when the rotor drive is started. If the sample climbs from the shear zone, the rotor speed will increase noticeably. ...
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ASTM D5293 for apparent viscosity of engine oils by Cold-cranking simulator
14. Precision and Bias14.1 Precision - The precision of this test method with CCS-2B (manual) as determined by the statistical examination of the interlaboratory test results over the temperature range from -5 to -30°C and viscosity range from 1560 to 10 200 mPa•s is as follows:14.1.1 Repeatability ...
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ASTM D5293 for apparent viscosity of engine oils by Cold-cranking simulator
12. Procedure for Automated and Automatic Automated CCS Operation12.1 Establish the calibration equation as described in 10.2.12.2 For automatic automated CCS instruments, place a minimum of 55 mL of the sample to be tested into a 60 mL bottle(s) designed to fit the sample tray. For automated CCS instruments, ...
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ASTM D5293 for apparent viscosity of engine oils by Cold-cranking simulator
11. Procedure for Manual CCS OperationNOTE 6 - Ensure that the cooling bath is stirred during the operation of the instrument. Failure to do so will permit large gradients in temperature to exist in the cooling bath. These large gradients will affect the sample temperature and reduce the precision of ...
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ASTM D5293 for apparent viscosity of engine oils by Cold-cranking simulator
10. Calibration10.1 Calibration of Manual CCS10.1.1 On start-up of a new instrument or when any part of the viscometric cell or drive component (motor, belt, tachometer-generator, and so forth) is replaced, determine the required motor drive current. Initially, recheck the drive current (as described ...
