ASTM D7452-16
(Test Method)Standard Test Method for Evaluation of the Load Carrying Properties of Lubricants Used for Final Drive Axles, Under Conditions of High Speed and Shock Loading
Standard Test Method for Evaluation of the Load Carrying Properties of Lubricants Used for Final Drive Axles, Under Conditions of High Speed and Shock Loading
SIGNIFICANCE AND USE
5.1 Final drive axles are often subjected to severe service where they encounter high speed shock torque conditions, characterized by sudden accelerations and decelerations. This severe service can lead to scoring distress on the ring gear and pinion surface. This test method measures anti-scoring properties of final drive lubricants.
5.2 This test method is used or referred to in the following documents:
5.2.1 American Petroleum Institute (API) Publication 1560.7
5.2.2 SAE J308 and SAE J2360.
SCOPE
1.1 This test method covers the determination of the anti-scoring properties of final drive axle lubricating oils when subjected to high-speed and shock conditions. This test method is commonly referred to as the L-42 test.2
1.2 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.
1.2.1 Exceptions—SI units are provided for all parameters except where there is no direct equivalent such as the units for screw threads, National Pipe Threads/diameters, tubing size, and single source equipment suppliers.
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. Specific warning information is given in Sections 4 and 7.
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Designation: D7452 − 16
Standard Test Method for
Evaluation of the Load Carrying Properties of Lubricants
Used for Final Drive Axles, Under Conditions of High Speed
1
and Shock Loading
This standard is issued under the fixed designation D7452; 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.
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).
TheTMC provides reference oils, and engineering and statistical services to laboratories that desire
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
the American Chemistry Council require that a laboratory use the TMC services as part of their test
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* 1.2.1 Exceptions—SI units are provided for all parameters
except where there is no direct equivalent such as the units for
1.1 This test method covers the determination of the anti-
screw threads, National Pipe Threads/diameters, tubing size,
scoring properties of final drive axle lubricating oils when
and single source equipment suppliers.
subjectedtohigh-speedandshockconditions.Thistestmethod
2
1.3 This standard does not purport to address all of the
is commonly referred to as the L-42 test.
safety concerns, if any, associated with its use. It is the
1.2 The values stated in inch-pound units are to be regarded
responsibility of the user of this standard to establish appro-
as standard. The values given in parentheses are mathematical
priate safety and health practices and determine the applica-
conversions to SI units that are provided for information only
bility of regulatory limitations prior to use. Specific warning
and are not considered standard.
information is given in Sections 4 and 7.
1
This test method is under the jurisdiction of ASTM Committee D02 on
2. Referenced Documents
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
3
Subcommittee D02.B0.03 on Automotive Gear Lubricants & Fluids.
2.1 ASTM Standards:
Current edition approved April 1, 2016. Published April 2016. Originally
D235 Specification for Mineral Spirits (Petroleum Spirits)
approved in 2008. Last previous edition approved in 20154 as D7452 – 15. DOI:
(Hydrocarbon Dry Cleaning Solvent)
10.1520/D7452-16.
2
Until the next revision of this test method, the ASTM Test Monitoring Center
(TMC) will update changes in this test method by means of information letters.
3
Information letters may be obtained from the ASTM Test Monitoring Center, 6555 For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Penn Avenue, Pittsburgh, PA 15206, Attention: Administrator. This edition incor- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
porates revisions in all information Letters through No. 15–2. The TMC is also a Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
source of reference oils.
*A Summary of Changes section appears at the end of this standard
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7452 − 16
E29 Practice for Using Significant Digits in Test Data to 5.2.1 American Petroleum Institute (API) Publication
7
Determine Conformance with Specifications 1560.
4 5.2.2 SAE J308 and SAE J2360.
2.2 Society of Automotive Engineers Standards:
SAE J308 Information Report on Axle and Manual Trans-
6. Apparatus
mission Lubricants
6.1 This test method provides a description of essential
SAE J2360 Lubricating Oil, Gear Multipurpose (Metric)
apparatus features, including mandat
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
Designation: D7452 − 15 D7452 − 16
Standard Test Method for
Evaluation of the Load Carrying Properties of Lubricants
Used for Final Drive Axles, Under Conditions of High Speed
1
and Shock Loading
This standard is issued under the fixed designation D7452; 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.
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).
The TMC provides reference oils, and engineering and statistical services to laboratories that desire
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
the American Chemistry Council require that a laboratory use the TMC services as part of their test
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*
1.1 This test method covers the determination of the anti-scoring properties of final drive axle lubricating oils when subjected
2
to high-speed and shock conditions. This test method is commonly referred to as the L-42 test.
1.2 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.
1.2.1 Exceptions—SI units are provided for all parameters except where there is no direct equivalent such as the units for screw
threads, National Pipe Threads/diameters, tubing size, and single source equipment suppliers.
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. Specific warning information is given in Sections 4 and 7.
2. Referenced Documents
3
2.1 ASTM Standards:
D235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.B0.03 on Automotive Gear Lubricants & Fluids.
Current edition approved Oct. 1, 2015April 1, 2016. Published November 2015April 2016. Originally approved in 2008. Last previous edition approved in 201420154
as D7452 – 14.D7452 – 15. DOI: 10.1520/D7452-15.10.1520/D7452-16.
2
Until the next revision of this test method, the ASTM Test Monitoring Center (TMC) will update changes in this test method by means of information letters. Information
letters may be obtained from the ASTM Test Monitoring Center, 6555 Penn Avenue, Pittsburgh, PA 15206, Attention: Administrator. This edition incorporates revisions in
all information Letters through No. 15–1.15–2. The TMC is also a source of reference oils.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7452 − 16
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
4
2.2 Society of
...
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