1、Designation:D126418Standard Test Method forDetermining the Water Washout Characteristics ofLubricating Greases1This standard is issued under the fixed designation D1264;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the evaluation of
3、 the resistanceof a lubricating grease to washout by water from a bearing,when tested at 38 C and 79 C(100 F and 175 F)under theprescribed laboratory conditions.It is not to be considered theequivalent of service evaluation tests.Precision and bias wasdetermined using grease ranging from NLGI 3 to 0
4、 grades inthe research report(see Section 10).1.2 This test method may not be suitable for some greasescontaining highly volatile components.This test method doesnot attempt to account for sample evaporation.It is the usersresponsibility to determine if evaporation of the sample is asignificant cont
5、ributor to mass loss at the required dryingtemperature.1.3 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.4 This standard does not purport to address all of thesafety concer
6、ns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific warning statements,see 6.3.1.5 This international standard w
7、as developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced
8、Documents2.1 ASTM Adjuncts:Standard Ball Bearing2D2PP,Version 4.43,Determination of Precision and BiasData for Use in Test Methods for Petroleum Products33.Summary of Test Method3.1 The grease is packed into a ball bearing,the bearing isthen inserted in a housing with specified clearances,androtated
9、 at 600 r min 6 30 r min.Water,controlled at thespecified test temperature,impinges on the bearing housing ata rate of 5 mL s 6 0.5 mL s.The amount of grease washed outin 60 min 6 1 min is a measure of the resistance of the greaseto water washout.4.Significance and Use4.1 This test method estimates
10、the resistance of greases towater washout from ball bearings under conditions of the test.No correlation with field service has been established.5.Apparatus5.1 Ball Bearing,Size 6204 deep groove ball bearingcontaining eight 7.9 mm(516in.)balls,separated by a two-piece,pressed steel cage,having an in
11、ternal free volume of6.5 cm36 0.5 cm3.ADJD33362bearings meet theserequirements,however other bearings with the same dimen-sions may be used.5.2 Bearing Housing and Shield with dimensions as shownin Fig.1.5.3 Reservoir,Bearing-Housing Mount,Circulating Pump,and Drive Motor,similar or equivalent to th
12、ose shown in Fig.1.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.G0.06 on Functional Tests-Contamination.Current edition approved Sept.1,2018.Published September 2018.Originallyap
13、proved in 1953.Last previous edition approved in 2016 as D1264 16.DOI:10.1520/D1264-18.2Available from ASTM International Headquarters.Order Adjunct No.ADJD3336.Original adjunct produced in 1984.3ADJD6300 is no longer available.*A Summary of Changes section appears at the end of this standardCopyrig
14、ht ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Sta
15、ndards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 in.mmin.mmFC0.0100.250.87522.22100 338 1.70.0150.380.93823.81174 379 1.70.0310.7921457.1183.1861525323.973164.76146.35FIG.1 Water Washout Characteristics of Lubricating Grease Apparat
16、usD1264 182 5.4 Heating Source,to maintain the water temperature at38 C 6 1.7 C(100 F 6 3 F)or 79 C 6 1.7 C(174 F 63 F).NOTE1Suitable temperature control may be obtained by the use ofimmersion heaters,steam coils,or infrared heat lamps,in conjunction withtransformers or thermostats.5.5 Thermometer or Thermocouple,to determine the tem-perature of the water reservoir.6.Materials and Reagents6.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is int