Standard Test Method for Evaluation of Load-Carrying Capacity of Lubricants Used in Hypoid Final-Drive Axles Operated under Low-Speed and High-Torque Conditions

SIGNIFICANCE AND USE
5.1 This test method measures a lubricant's ability to protect hypoid final drive axles from abrasive wear, adhesive wear, plastic deformation, and surface fatigue when subjected to low-speed, high-torque conditions. Lack of protection can lead to premature gear or bearing failure, or both.  
5.2 This test method is used, or referred to, in specifications and classifications of rear-axle gear lubricants such as:  
5.2.1 Specification D7450.  
5.2.2 American Petroleum Institute (API) Publication 1560.  
5.2.3 SAE J308.  
5.2.4 SAE J2360.
SCOPE
1.1 This test method, commonly referred to as the L-37-1 test, describes a test procedure for evaluating the load-carrying capacity, wear performance, and extreme pressure properties of a gear lubricant in a hypoid axle under conditions of low-speed, high-torque operation.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.2.1 Exceptions—Where there is no direct SI equivalent such as National Pipe threads/diameters, tubing size, or where there is a sole source supply equipment 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 the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine 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 accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM D8165-17 - Standard Test Method for Evaluation of Load-Carrying Capacity of Lubricants Used in Hypoid Final-Drive Axles Operated under Low-Speed and High-Torque Conditions
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D8165 − 17
Standard Test Method for
Evaluation of Load-Carrying Capacity of Lubricants Used in
Hypoid Final-Drive Axles Operated under Low-Speed and
1
High-Torque Conditions
This standard is issued under the fixed designation D8165; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Portions of this test method are written for use by laboratories that make use of ASTM Test
2
Monitoring Center (TMC) services (see Annex A1 – Annex A4).
TheTMCprovidesreferenceoils,andengineeringandstatisticalservicestolaboratoriesthatdesire
to produce test results that are statistically similar to those produced by laboratories previously
calibrated by the TMC.
In general, the test purchaser decides if a calibrated test stand is to be used. Organizations such as
theAmericanChemistryCouncilrequirethatalaboratoryutilizetheTMCservicesaspartoftheirtest
registration process. In addition, the American Petroleum Institute and the Gear Lubricant Review
Committee of the Lubricant Review Institute (SAE International) require that a laboratory use the
TMC 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 (and
hence the test purchaser) has an assurance that the test stand was operating at the proper level of test
severity. It should also be borne in mind that results obtained in a non-calibrated test stand may not
be the same as those obtained in a test stand participating in the ASTM TMC services process.
Laboratories that choose not to use the TMC services may simply disregard these portions.
1. Scope responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.1 This test method, commonly referred to as the L-37-1
mine the applicability of regulatory limitations prior to use.
test,describesatestprocedureforevaluatingtheload-carrying
Specific warning statements are provided in 7.2 and 10.1.
capacity,wearperformance,andextremepressurepropertiesof
1.4 This international standard was developed in accor-
a gear lubricant in a hypoid axle under conditions of low-
dance with internationally recognized principles on standard-
speed, high-torque operation.
ization established in the Decision on Principles for the
1.2 The values stated in SI units are to be regarded as
Development of International Standards, Guides and Recom-
standard. No other units of measurement are included in this
mendations issued by the World Trade Organization Technical
standard.
Barriers to Trade (TBT) Committee.
1.2.1 Exceptions—Where there is no direct SI equivalent
2. Referenced Documents
such as National Pipe threads/diameters, tubing size, or where
3
there is a sole source supply equipment specification.
2.1 ASTM Standards:
1.2.1.1 The drawing in Annex A6 is in inch-pound units.
D235Specification for Mineral Spirits (Petroleum Spirits)
1.3 This standard does not purport to address all of the (Hydrocarbon Dry Cleaning Solvent)
safety concerns, if any, associated with its use. It is the
D4175Terminology Relating to Petroleum Products, Liquid
Fuels, and Lubricants
D6121TestMethodforEvaluationofLoad-CarryingCapac-
1
This test method is under the jurisdiction of ASTM Committee D02 on
ity of Lubricants Under Conditions of Low Speed and
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.B0.03 on Automotive Gear Lubricants & Fluids.
3
CurrenteditionapprovedDec.1,2017.PublishedFebruary2018.DOI:10.1520/ For referenced ASTM standards, visit the ASTM website, www.astm.org, or
D8165-17. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
ASTMTestMonitoringCenter,6555PennAvenue,Pittsburgh,PA15206-4489. Standards volume information, refer to the standard’s Document Summary page on
www.astmtmc.cmu.edu. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8165 − 17
High Torque Used for Final Hypoid Drive Axles lapping of mating surfaces by fine particles suspended in
D7450Specification for Performance of Rear Axle Gear lubricant, fuel, or air or imbedded in a surface.
Lubricants Intended for API Category GL-5 Service ASTM Distress Rating Manual No. 21
E29Practice for Using Significant Digits in Test Data to
3.2.2 adhesive wear, n—on ring and pinion gears, removal
Determine Conformance with Specifications
of material from the operating surface of the gear caused by
2.2 O
...

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