ASTM-D4425 › Historical Revision Information
Standard Test Method for Oil Separation From Lubricating Grease by Centrifuging (Koppers Method)
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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 and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
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.
Keywords
centrifuge; grease; lubricating grease; oil separation; Centrifuge method; Koppers method; Lubricating grease; Oil separation; ICS Number Code 75.100 (Lubricants, industrial oils and related products)
To find similar documents by ASTM Volume:
05.02 (Petroleum Products and Lubricants (II): D3711 - D6122)
To find similar documents by classification:
To find similar documents by Federal Supply Class Code:
FSC 9330 (Plastics Fabricated Materials)
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Document Number
ASTM-D4425-09
Revision Level
2009 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
April 15, 2009
Document Type
Test Method
Page Count
4 pages
Committee Number
D02.G0.03