ASTM D1367-96(2001)
(Test Method)Standard Test Method for Lubricating Qualities of Graphites
Standard Test Method for Lubricating Qualities of Graphites
SCOPE
1.1 This test method covers evaluation of the abrasive properties of graphites that are used for lubricating purposes.
1.2 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are for information only.
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.
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An American National Standard
Designation:D1367–96 (Reapproved 2001)
Standard Test Method for
1
Lubricating Qualities of Graphites
This standard is issued under the fixed designation D 1367; 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.
1. Scope
1.1 This test method covers evaluation of the abrasive
properties of graphites that are used for lubricating purposes.
1.2 The values stated in SI units are to be regarded as the
standard. The values stated in parentheses are for information
only.
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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Summary of Test Method
2.1 A representative sample of the graphite is suspended in
mineral oil, and the mixture containing 15 % by weight of
graphite is circulated through a ball bearing by means of an
impeller and duct assembly.The bearing shaft is driven at 1750
rpm for a period of 2 h. The loss in weight of the bearing is
determined.
3. Significance and Use
3.1 This test method can be used to determine the relative
abrasiveness of graphites under the test conditions, and if the
FIG. 1 Graphite Lubricant Tester
test conditions are changed, the relative ratings may be
different. No correlation has been established between this test
bearing. The duct, in two sections, is arranged in the form of a
method and field service.
cylinder around the bearing. The upper section of the cylinder,
4. Apparatus
containingthreeportholes,ispermanentlymounted.Thelower
2
section, which is removable, widens to a bell shape around the
4.1 Graphite Lubricant Tester, as illustrated in Fig. 1,
propeller.
consisting of the following:
2
4.1.2 Motor, capable of driving the test bearing at 1750 6
4.1.1 Bearing Holder Assembly, as shown in Fig. 2. It
50 rpm, and equipped with a coupling which may readily be
consists of a shaft on which the bearing is mounted, a propeller
detached from the shaft described in 4.1.1.
at the end of the shaft to maintain the graphite in uniform
4.1.3 Griffın Beaker,400-mL,75mmindiameter,orametal
suspension, and a duct to direct the flow of fluid through the
container of similar dimensions.
4.1.4 Stand, designed to support the equipment referred to
1 in 4.1.1, 4.1.2, and 4.1.3 in a rigid vertical position.
This test method is under the jurisdiction of ASTM Committee D02 on
4.2 Transfer Pipet, 50-mL, provided with a rubber bulb.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.L on Joint ASTM-ASLE Committee on Industrial Lubricants.
Current edition approved Apr. 10, 1996. Published June 1996. Originally
5. Reagents and Materials
published as D 1367 – 55 T. Last previous edition D 1367 – 90.
2 5.1 Double-Row Ball Bearing, without closure (seal) having
Detail drawings of the apparatus are available at a nominal cost from ASTM.
Request Adjunct No. ADJD1367. an internal bore of 12.00 mm (0.4724 in.), a diameter of 32.0
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1367
7.2 Place the bearing in the upper end of the bell, so that the
outer ring is seated firmly. Screw the bell tightly by finger on
the cylindrical duct, thereby locking the bearing outer ring in
place. Place the bushing on the shaft and finger screw the
propeller tightly on the left-hand thread located at the bottom
of the shaft. The bushing serves to lock the inner ring of the
bearing to the shaft. At this point the equipment should be
checked as to freedom from applied loads in accordance with
the procedure outlined in Annex A1.
7.3 Using the 400-mL-Griffin beaker, prepare a mixture of
36 6 0.1 g of the sample graphite and 204 6 0.1 g of the
mineral oil (see 5.2).
7.4 Disperse the graphite in the oil by stirring with a spatula
until scraping of the bottom of the beaker shows no aggregates
of graphite.
7.5 When uniform suspension of the graphite has been
achieved,placethebeakerintheseatprovidedinthebaseplate
of the stand. Then lower the bearing assembly into the beaker
until there is a 6.4-mm (0.25-in.) clearance between the bottom
of the bell section of the duct and the beaker.
7.6 By means of the pipet, draw off a sufficient quantity of
the mixture to lower the level of the liquid to coincide with the
oil level mark on the upper section of the cylinder duct. When
the liquid is at this level, one-half of
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