Cone penetration of greases



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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Grease with consistencies above grade 4 as measured by NLGI were not found in machines. These lengthy tests can be expected to yield precise results but are not practical for most in-service grease samples within a production testing environment. These gaps can be a bit of a minefield, and confusion is likely for those not familiar with the non-liner nature of the NLGI measuring system. Retrieved from " https: The repeatability of the instrument was not stated.
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NLGI consistency number


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A Better Way to Test Grease Consistency

Alternative tests to cone penetration have been developed in which touch is utilized to characterize grease stiffness, but these test methods typically are crude and do not lend themselves to accurate results or trend analysis. The online version of our award-winning magazine delves deeper into ASTM news with expanded coverage of press releases, feature articles, interviews and more. Frequency sweep of similar greases with different manufacturing processes.
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