ASTM D6121-08b

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D6121–08a Designation:D6121–08b
Standard Test Method for
Evaluation of Load-Carrying Capacity of Lubricants Under
Conditions of Low Speed and High Torque Used for Final
1
Hypoid Drive Axles
This standard is issued under the fixed designation D 6121; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
2
1.1 This test method is commonly referred to as the L-37 test. This test method covers a test procedure for evaluating the
load-carrying, wear, and extreme pressure properties of a gear lubricant in a hypoid axle under conditions of low-speed,
high-torque operation.
1.2 This test method also provides for the running of the low axle temperature (Canadian) L-37 test. The procedure for the low
axle temperature (Canadian) L-37 test is identical to the standard L-37 test with the exceptions of the items specifically listed in
Annex A6. The procedure modifications listed in Annex A6 refer to the corresponding section of the standard L-37 test method.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3.1 Exceptions—InTableA9.1, the values stated in SI units are to be regarded as standard.Also, no SI unit is provided where
there is not a direct SI equivalent.
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. Specific warning information is given in Sections 4 and 7.
2. Referenced Documents
3
2.1 ASTM Standards:
D 235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
4
2.2 Military Specification:
MIL-PRF-2105E Lubricating Oil, Gear, Multipurpose
5
2.3 AGMA National Standard:
Nomenclature of Gear Tooth Failure Modes
6
2.4 SAE Standard:
SAE J308 Information Report on Axle and Manual Transmission Lubricants
SAE J2360 Lubricating Oil, Gear Multipurpose (Metric) Military Use
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 abrasive wear, n— on ring and pinion gears,removalofmaterialfromtheoperatingsurfaceofthegearcausedbylapping
of mating surfaces by fine particles suspended in lubricant, fuel, or air or imbedded in a surface.
7
CRC Rating Manual No. 21
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.B0.03
on Automotive Gear Lubricants & Fluids.
CurrenteditionapprovedOct.15,Dec.1,2008.PublishedOctober2008.January2009.Originallyapprovedin1997.Lastpreviouseditionapprovedin2008asD 6121–08a.
2
Untilthenextrevisionofthistestmethod,theASTMTestMonitoringCenter(TMC)willupdatechangesinthistestmethodbymeansofInformationLetters.Thisedition
includes all Information Letters through No. 07–2. Information Letters may be obtained from theASTM Test Monitoring Center, 6555 PennAve, Pittsburgh, PA15206,Attn:
Administrator. The TMC is also the source of reference oils.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from Standardization Documents Order Desk, Bldg 4, Section D, 700 Robbins Avenue, Philadelphia, PA 19111–5098.
5
American Gear Manufacturers Assn. (AGMA), 1500 King St., Suite 201, Alexandria, VA 22314.
6
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001.
7
Available from Coordinating Research Council (CRC), 219 Perimeter Ctr. Pkwy., Atlanta, GA 30346.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6121–08b
3.1.2 adhesive wear, n— on ring and pinion gears, removal of material from the operating surface of the gear caused by
shearingofjunctionsformedbetweenoperatingsu
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D6121–08a Designation:D6121–08b
Standard Test Method for
Evaluation of Load-Carrying Capacity of Lubricants Under
Conditions of Low Speed and High Torque Used for Final
1
Hypoid Drive Axles
This standard is issued under the fixed designation D 6121; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
2
1.1 This test method is commonly referred to as the L-37 test. This test method covers a test procedure for evaluating the
load-carrying, wear, and extreme pressure properties of a gear lubricant in a hypoid axle under conditions of low-speed,
high-torque operation.
1.2 This test method also provides for the running of the low axle temperature (Canadian) L-37 test. The procedure for the low
axle temperature (Canadian) L-37 test is identical to the standard L-37 test with the exceptions of the items specifically listed in
Annex A6. The procedure modifications listed in Annex A6 refer to the corresponding section of the standard L-37 test method.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3.1 Exceptions—InTableA9.1, the values stated in SI units are to be regarded as standard.Also, no SI unit is provided where
there is not a direct SI equivalent.
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. Specific warning information is given in Sections 4 and 7.
2. Referenced Documents
3
2.1 ASTM Standards:
D 235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
4
2.2 Military Specification:
MIL-PRF-2105E Lubricating Oil, Gear, Multipurpose
5
2.3 AGMA National Standard:
Nomenclature of Gear Tooth Failure Modes
6
2.4 SAE Standard:
SAE J308 Information Report on Axle and Manual Transmission Lubricants
SAE J2360 Lubricating Oil, Gear Multipurpose (Metric) Military Use
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 abrasive wear, n—on ring and pinion gears, removal of material from the operating surface of the gear caused by lapping
of mating surfaces by fine particles suspended in lubricant, fuel, or air or imbedded in a surface.
7
CRC Rating Manual No. 21
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.B0.03
on Automotive Gear Lubricants & Fluids.
CurrenteditionapprovedOct.15,Dec.1,2008.PublishedOctober2008.January2009.Originallyapprovedin1997.Lastpreviouseditionapprovedin2008asD 6121–08a.
2
Untilthenextrevisionofthistestmethod,theASTMTestMonitoringCenter(TMC)willupdatechangesinthistestmethodbymeansofInformationLetters.Thisedition
includes all Information Letters through No. 07–2. Information Letters may be obtained from theASTM Test Monitoring Center, 6555 PennAve, Pittsburgh, PA15206,Attn:
Administrator. The TMC is also the source of reference oils.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from Standardization Documents Order Desk, Bldg 4, Section D, 700 Robbins Avenue, Philadelphia, PA 19111–5098.
5
American Gear Manufacturers Assn. (AGMA), 1500 King St., Suite 201, Alexandria, VA 22314.
6
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001.
7
Available from Coordinating Research Council (CRC), 219 Perimeter Ctr. Pkwy., Atlanta, GA 30346.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6121–08b
3.1.2 adhesivewear,n—onringandpiniongears,removalofmaterialfromtheoperatingsurfaceofthegearcausedbyshearing
of junctions formed between operating surf
...