ASTM D4425 - 19

    Standard Test Method for Oil Separation from Lubricating Grease by Centrifuging (Koppers Method)

    Active Standard ASTM D4425 | Developed by Subcommittee: D02.G0.03

    Book of Standards Volume: 05.02


      Format Pages Price  
    PDF 4 $44.00   ADD TO CART
    Hardcopy (shipping and handling) 4 $44.00   ADD TO CART
    Standard + Redline PDF Bundle 8 $52.00   ADD TO CART



    Significance and Use

    5.1 This test method is useful in evaluating the degree to which a grease would separate into fluid and solid components when subjected to high centrifugal forces. Flexible shaft couplings, universal joints, and rolling element thrust bearings are examples of machinery which subject lubricating greases to large and prolonged centrifugal forces. This test method has been found to give results that correlate well with results from actual service. The test method may be run at other conditions with agreement between parties but the precision noted in this test method will no longer apply.3

    1. Scope

    1.1 This test method covers a procedure for determining the tendency of lubricating grease to separate oil when subjected to high centrifugal forces.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D217 Test Methods for Cone Penetration of Lubricating Grease


    ICS Code

    ICS Number Code 75.100 (Lubricants, industrial oils and related products)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D4425-19

    Citation Format

    ASTM D4425-19, Standard Test Method for Oil Separation from Lubricating Grease by Centrifuging (Koppers Method), ASTM International, West Conshohocken, PA, 2019, www.astm.org

    Back to Top