1、Designation:D816522Standard Test Method forEvaluation of Load-Carrying Capacity of Lubricants Used inHypoid Final-Drive Axles Operated under Low-Speed andHigh-Torque Conditions1This standard is issued under the fixed designation D8165;the number immediately following the designation indicates the ye
2、ar oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONPortions of this test method are written for use by laborato
3、ries that make use of ASTM TestMonitoring Center(TMC)2services(see Annex A1 Annex A4).The TMC provides reference oils,and engineering and statistical services to laboratories that desireto produce test results that are statistically similar to those produced by laboratories previouslycalibrated by t
4、he TMC.In general,the test purchaser decides if a calibrated test stand is to be used.Organizations such astheAmerican Chemistry Council require that a laboratory utilize the TMC services as part of their testregistration process.In addition,the American Petroleum Institute and the Gear Lubricant Re
5、viewCommittee of the Lubricant Review Institute(SAE International)require that a laboratory use theTMC services in seeking qualification of oils against their specifications.The advantage of using the TMC services to calibrate test stands is that the test laboratory(andhence the test purchaser)has a
6、n assurance that the test stand was operating at the proper level of testseverity.It should also be borne in mind that results obtained in a non-calibrated test stand may notbe the same as those obtained in a test stand participating in the ASTM TMC services process.Laboratories that choose not to u
7、se the TMC services may simply disregard these portions.1.Scope*1.1 This test method,commonly referred to as the L-37-1test,describes a test procedure for evaluating the load-carryingcapacity,wear performance,and extreme pressure properties ofa gear lubricant in a hypoid axle under conditions of low
8、-speed,high-torque operation.31.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionsWhere there is no direct SI equivalentsuch as National Pipe threads/diameters,tubing size,or wherethere is a sole source supply equ
9、ipment specification.1.2.1.1 The drawing in Annex A6 is in inch-pound units.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices
10、and deter-mine the applicability of regulatory limitations prior to use.Specific warning statements are provided in 7.2 and 10.1.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for t
11、he1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0.03 on Automotive Gear Lubricants&Fluids.Current edition approved July 1,2022.Published July 2022.Originally approvedin 2017.Last
12、 previous edition approved in 2021 as D8165 211.DOI:10.1520/D8165-22.2ASTM Test Monitoring Center,203 Armstrong Drive,Freeport,PA 16229.www.astmtmc.org.3Until the next revision of this test method,the ASTM Test Monitoring Center(TMC)will update changes in this test method by means of Information Let
13、ters.This edition includes all Information Letters through No.22-1.Information Lettersmay be obtained from the ASTM Test Monitoring Center,203 Armstrong Drive,Freeport,PA 16229,Attn:Director.The TMC is also the source of reference oils.*A Summary of Changes section appears at the end of this standar
14、dCopyright 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 Internati
15、onal Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1Development of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 AST
16、M Standards:4D235 Specification for Mineral Spirits(Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD6121 Test Method for Evaluation of Load-Carrying Capac-ity of Lubricants Under Conditions of Low Speed andHigh Torque Used for Final Hypoid Drive AxlesD7450 Specification for Performance of Rear Axle GearLubricants Intended for API Category GL-5 ServiceE29 Practice for Using Significant Digits in Test Data toDetermine
