ASTM D1742-94(2000)e1

Standard Test Method for Oil Separation from Lubricating Grease During Storage

SCOPE
1.1 This test method covers the determination of the tendency of a lubricating grease to separate oil during storage in both normally filled and partially filled containers.
1.2 This test method is not suitable for greases softer than NLGI No. 1 grade.  
1.3 Values stated in acceptable SI units are to be regarded as the standard except for the dimensions in Fig. 2 where inch-pound units are standard.
1.4 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. For a specific hazard statement, see 7.1.

General Information

• Status: Historical
• Publication Date: 09-Jun-2000
• ICS: 75.100 - Lubricants, industrial oils and related products
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.G0.03 - Physical Tests

Relations

• Replaced By: ASTM D1742-06 - Standard Test Method for Oil Separation from Lubricating Grease During Storage
• Effective Date: 01-May-2006
• Referred By: ASTM D8324-21 - Standard Guide for Selection of Environmentally Acceptable Lubricants for the U.S. Environmental Protection Agency (EPA) Vessel General Permit
• Effective Date: 10-Jun-2000
• Referred By: ASTM F2489-06(2022) - Standard Guide for Instrument and Precision Bearing Lubricants—Part 2 Greases
• Effective Date: 10-Jun-2000
• Referred By: ASTM D6185-11(2017) - Standard Practice for Evaluating Compatibility of Binary Mixtures of Lubricating Greases
• Effective Date: 10-Jun-2000
• Referred By: ASTM D4732-13(2020) - Standard Specification for Cool-Application Filling Compounds for Telecommunications Wire and Cable
• Effective Date: 10-Jun-2000
• Referred By: ASTM D4049-20 - Standard Test Method for Determining the Resistance of Lubricating Grease to Water Spray
• Effective Date: 10-Jun-2000
• Referred By: ASTM D4950-22 - Standard Classification and Specification for Automotive Service Greases
• Effective Date: 10-Jun-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
e1
Designation:D1742–94 (Reapproved 2000)
Standard Test Method for
Oil Separation from Lubricating Grease During Storage
This standard is issued under the fixed designation D 1742; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
e NOTE—Warning notes were placed in text editorially in June 2000.
1. Scope
1.1 This test method covers the determination of the ten-
dency of a lubricating grease to separate oil during storage in
both normally filled and partially filled containers.
1.2 This test method is not suitable for greases softer than
NLGI No. 1 grade.
1.3 Values stated in acceptable SI units are to be regarded as
the standard except for the dimensions in Fig. 2 where
inch-pound units are standard.
1.4 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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For a specific
hazard statement, see 7.1.
2. Referenced Documents
2.1 ASTM Standards:
D 235 Specification for Mineral Spirits (Petroleum Spirits)
(Hydrocarbon Drycleaning Solvent)
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
poses
2.2 Other Standard:
NLGI Grease Consistency Classification
3. Terminology
3.1 Definitions:
3.1.1 lubricating grease, n—a semi-fluid to solid product of
a thickener in a liquid lubricant.
FIG. 1 Pressure Bleeding Test Cell A
3.1.1.1 Discussion—Thedispersionofthethickenerformsa
two-phase system and immobilizes the liquid lubricant by
surface tension and other physical forces. Other ingredients are
3.1.2 thickener, n—in lubricating grease, a substance com-
commonly included to impart special properties.
posed of finely-divided particles dispersed in a liquid lubricant
to form the product’s structure.
3.1.2.1 Discussion—The thickeners can be fibers (such as
This test method is under the jurisdiction of the ASTM Committee D02 on
various metallic soaps) or plates or spheres (such as certain
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
non-soapthickeners),whichareinsolubleor,atmost,onlyvery
D02.G on Lubricating Grease.
Current edition approved Jan. 15, 1994. Published March 1994. Originally
slightly soluble in the liquid lubricant. The general require-
published as D 1742 – 60. Last previous edition D 1742 – 88.
ments are that the solid particles be extremely small, uniformly
Annual Book of ASTM Standards, Vol 06.04.
dispersed, and capable of forming a relatively stable, gel-like
Annual Book of ASTM Standards, Vol 14.02.
Available from NLGI, 4635 Wyandotte St., Kansas City, MO 64112. structure with the liquid lubricant.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D1742
in. mm in. mm in. mm in. mm
5 7
0.0021 0.053 1 ⁄8 41.3 0.500 12.70 4 ⁄16 112.7
3 1
0.0029 0.074 1 ⁄4 44.4 0.510 12.95 4 ⁄2 114.3
0.010 0.25 2 50.8 0.520 13.20 4 ⁄16 119.1
1 1 5 3
⁄16 1.59 2 ⁄2 63.5 ⁄8 15.87 4 ⁄4 120.6
1 11 3 26
⁄8 3.17 3 ⁄16 93.7 ⁄4 19.05 4 ⁄32 123.03
3 1 1
⁄16 4.76 4 ⁄8 104.8 1 25.4 5 ⁄4 133.3
1 1
⁄4 6.35 4.360 110.74 1 ⁄4 31.8 6 152.4
5 3 1
⁄16 7.94 4.365 110.87 1 ⁄8 34.9 6 ⁄2 165.1
3 3
⁄8 9.52 4 ⁄8 111.1 3 76.2
FIG. 2 Detailed Drawing of Pressure Bleeding Test Cell A
3.1.3 oil separation, n—the appearance of a liquid fraction 5. Significance and Use
from an otherwise homogeneous lubricating composition.
5.1 When a lubricating grease separates oil, the remaining
compositionincreasesinconsistency.Thiscanaffecttheability
4. Summary of Test Method
of the product to function as designed.
4.1 The sample of grease, supported on a 75-µm (No. 200)
5.2 It has been found that the results of this test correlate
sieve, is subjected to 1.72 kPa (0.25 psi) air pressure for 24 h
directly with the oil separation that occurs in 35-lb pails of
at25°C(77°F).Anyoilseepagethatoccursdrainsintoabeaker
and is weighed. grease during storage.
D1742
maintaining air pressure at 1.72 6 0.07 kPa, should be used.A
manometer, or other suitable pressure indicating device, and a
pressurereliefvalvetoprotectagainstpressuresurgeshouldbe
included in the pressure system.
7. Reagents
7.1 Mineral Spirits, conforming to Specification D 235. (
Warning—Combustible. Vapor harmful.)
8. Sampling
8.1 The sample presented for analysis should be large
enough to make possible the selection of a representative
portion for testing.
8.2 Examine for any indication of non-homogeneity such as
oil separation, phase changes or gross contamination. If any
abnormal conditions are found, obtain a new sample.
9. Preparation of Apparatus
9.1 Thoroughly clean the strainer, cup, and oil-collecting
beaker with mineral spirits and follow by air drying.
9.2 Carefully inspect the sieve to make certain that there is
no build-up which would affect the passage of oil. The sieve
must also be free of any surface irregularities such as creases,
dents, or punctures. Replace, if necessary.
9.3 The funnel must be clean and free of any residues which
can retard the flow of oil.
9.4 Inspect the cover and cup for any dents or distortions to
the mating surfaces which can interfere with a tight seal
between the units.
9.5 When the O-ring seal shows wear it m
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