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ASTM D7452-08

(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
Final drive axles are often subjected to severe service where they encounter high speed shock load 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.
This test method is used or referred to in the following documents:
American Petroleum Institute (API) Publication 1560.  
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.  
1.2 The values stated in foot-pound units are to be regarded as standard. For example, torque is stated in foot-pound units, the values for temperature are stated in degrees Fahrenheit, and the test lubricant sample volume is stated in pints. The values given in parentheses are mathematical conversions to SI units that are provided for information purposes only, and are not considered standard. 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, and tubing size.
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.

General Information

Status
Historical
Publication Date
30-Apr-2008
ICS
75.100 - Lubricants, industrial oils and related products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.B0.03 - Automotive Gear Lubricants & Fluids
Current Stage
Ref Project

Relations

Replaced By
ASTM D7452-09 - 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
Effective Date
15-Apr-2009
Referred By
ASTM D7450-19 - Standard Specification for Performance of Rear Axle Gear Lubricants Intended for API Category GL-5 Service
Effective Date
01-May-2008

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ASTM D7452-08 - Standard Test Method for Evaluation of the Load Carrying Properties of Lubricants Used for Final Drive Axles, Under Conditions of High Speed and Shock LoadingASTM D7452-08 - 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
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ASTM D7452-08 - 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
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Standards Content (Sample)

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:D7452–08
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.
4
1. Scope 2.2 Society of Automotive Engineers Standards:
SAE J308 Information Report on Axle and Manual Trans-
1.1 This test method covers the determination of the anti-
mission Lubricants
scoring properties of final drive axle lubricating oils when
SAE J2360 Lubricating Oil, Gear Multipurpose (Metric)
subjectedtohigh-speedandshockconditions.Thistestmethod
2
Military Use
is commonly referred to as the L-42 test.
1.2 The values stated in foot-pound units are to be regarded
3. Terminology
as standard. For example, torque is stated in foot-pound units,
3.1 Definitions of Terms Specific to This Standard:
thevaluesfortemperaturearestatedindegreesFahrenheit,and
3.1.1 coast side, n—the convex side of the pinion and the
the test lubricant sample volume is stated in pints. The values
concave side of the ring gear which are in contact during
given in parentheses are mathematical conversions to SI units
5
deceleration in a forward gear. CRC Manual 21
that are provided for information purposes only, and are not
3.1.2 drive side, n—the concave side of the pinion and the
considered standard. SI units are provided for all parameters
convex side of the ring gear which are in contact during
except where there is no direct equivalent such as the units for
5
acceleration in a forward gear. CRC Manual 21
screwthreads,nationalpipethreads/diameters,andtubingsize.
3.1.3 scoring, n—on the ring and the pinion gear teeth, the
1.3 This standard does not purport to address all of the
displacement of metal by local momentary welding from the
safety concerns, if any, associated with its use. It is the
gear tooth, resulting in the development of a matt, or frosted
responsibility of the user of this standard to establish appro-
5
dull surface. CRC Manual 21
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific warning
4. Summary of Test Method
information is given in Sections 4 and 7.
4.1 Charge a specially prepared light duty hypoid rear axle
6
2. Referenced Documents (Dana Model 44 ASTM Part No. 044AA100-1) with the
3 lubricant sample to be tested (see 10.1). Mount the axle
2.1 ASTM Standards:
between two load absorbing dynamometers which are driven
D235 Specification for Mineral Spirits (Petroleum Spirits)
with a V-8 gasoline engine through a manual transmission.
(Hydrocarbon Dry Cleaning Solvent)
4.2 Condition the test axle with light loads at different
E29 Practice for Using Significant Digits in Test Data to
speed, torque and temperature conditions on both the drive and
Determine Conformance with Specifications
coast sides of the gears. (Warning—High-speed rotating
equipment, electrical shock, high-temperature surfaces.) After
conditioning, subject the test axle to high speed and shock
1
This test method is under the jurisdiction of ASTM Committee D02 on
loadings at higher temperatures.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
4.3 Ratethedriveandcoastsideofthepinionandringgears
D02.B0.03 on Automotive Gear Lubricants & Fluids.
Current edition approved May 1, 2008. Published June 2008. DOI: 10.1520/ at the end of test (EOT) for scoring distress.
D7452-08.
2
Until the next revision of this test method, the ASTM Test Monitoring Center
5. Significance and Use
(TMC) will update changes in this test method by means of information letters.
5.1 Final drive axles are often subjected to severe service
Information letters may be obtained from the ASTM Test Monitoring Center, 6555
Penn Avenue, Pittsburgh, PA 15206, Attention: Administrator. The TMC is also a
where they encounter high speed shock load conditions,
source of reference oils.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Standards volume information, refer to the standard’s Document Summary page on Dr., Warrendale, PA 15096-0001, http://www.sae.org.
5
the ASTM website. CRC Rating Manual, No. 21, Coordinating Research Council, Atlanta, GA.
6
Parts and Model 44 Maintenance Manual available from Dana Corporation,
P.O. Box 2424, Fort Wayne, IN 46801.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Con
...

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SCOPE
1.1 This test method covers the determination of glycol based antifreeze for in-service engine oil by derivative headspace/gas chromatography.  
1.2 Sample is derivatized in-situ directly in a headspace sampling vial prior to vapor phase extraction and injection into a gas chromatograph.  
1.3 The chemistry of the derivatization is unique to the detection of the molecules of ethylene glycol and 1,2-propylene glycol. 1,3-propylene glycol could also be detected but is not used in any known anti-freeze at this time. Other coolant analyses are beyond the scope of this test method.  
1.4 The derivatization process does not affect glycol breakdown products such as glycolate and formate and hence the presence of these compounds in the oil will not be quantified.  
1.5 The test method concentration range is from 50 µg/g to 1000 µg/g. Lower levels are possible by method modifications. Higher levels are possible through sample dilution.  
1.6 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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.  
1.8 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.

  • Standard
    8 pages
    English language
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  • Standard
    8 pages
    English language
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ASTM
ASTM D7918-23(Test Method)
Standard Test Method for Measurement of Flow Properties and Evaluation of Wear, Contaminants, and Oxidative Properties of Lubricating Grease by Die Extrusion Method and Preparation

SIGNIFICANCE AND USE
5.1 Trending the wear, contamination, consistency, and oxidative properties of a lubricating grease is a crucial part of condition-monitoring programs. Changes in these properties or deviations from the new grease can be indicative of problems within the lubricated component, such as the mixing of incompatible thickener types, excessive wear or contaminant levels, or significant depletion of antioxidant levels. These test methods also makes it possible to develop trends that can be used to predict failures before they occur and allow for corrective action to be taken.
SCOPE
1.1 This test method covers the determination and evaluation of flow properties, wear levels, contaminants, and oxidative condition of new and in-service lubricating grease.  
1.2 This test method provides guidance on evaluating in-service grease samples, NLGI grades 00 to 3, for wear, consistency, contamination, and oxidation.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3.1 Exception—The exception to this will be where units of references were developed by the developers of the test equipment and necessary to report the results of the test.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

  • Standard
    9 pages
    English language
    sale 15% off
  • Standard
    9 pages
    English language
    sale 15% off