ASTM WK66880

    Revision of D566 - 17 Standard Test Method for Dropping Point of Lubricating Grease

    (What is a Work Item?)

    Active Standard: D566 - 20

    Developed by Subcommittee: D02.G0.03 | Committee D02 | Contact Staff Manager



    WK66880


    Keywords

    dropping point; grease; lubricating grease;;

    Rationale

    The dropping point test is being misused in Industry as being the arbiter for the upper operating temperature of the grease. As originally approved in 1940, the ASTM D566 (ISO 2176) dropping point test was used to give an indication of the higher temperature performance of the grease. Historically, there was a rule of thumb which suggested that the upper operating temperature of a grease is approximately 2/3 of the dropping point. This is borne out in ISO 12924, that states that dropping point can be used as an indication of upper operating temperature for greases with operating temperatures at 60 C ( 90 C dropping point) and 80 C ( 130 C dropping point) maximum. Above this temperature the dropping point has to be reported but it has no bearing on the performance of the grease.

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    Work Item Status

    Date Initiated:
    02-01-2019

    Technical Contact:
    Gareth Fish

    Item:
    027

    Ballot:
    D02 (20-01)

    Status:
    Ballot Item Approved as D566-2020 and Pending Publication

    Item:
    028

    Ballot:
    D02 (20-01)

    Status:
    Ballot Item Approved as D566-2020 and Pending Publication

    Item:
    029

    Ballot:
    D02 (20-01)

    Status:
    Ballot Item Approved as D566-2020 and Pending Publication