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ASTM D7755-11

(Practice)

Standard Practice for Determining the Wear Volume on Standard Test Pieces Used by High-Frequency, Linear-Oscillation (SRV) Test Machine

Standard Practice for Determining the Wear Volume on Standard Test Pieces Used by High-Frequency, Linear-Oscillation (SRV) Test Machine

SIGNIFICANCE AND USE
The determination of the wear volume becomes in tribological testing a key element, as it is more discriminative than the wear scar diameter, because an optically visible wear scar diameter may or may not indicate wear on the surface of the ball and the wear track as an irreversible loss of material. Users of this test method should determine whether results correlate with field performance or other applications.
Note 3—It is believed, that tactile stylus tip profilometer determines the most realistic figure and are more frequent in use, than it can be achieved by optical profilometers operating in a non-contacting mode.
SCOPE
1.1 This practice covers a procedure for determining the wear volume WV of wear scars and tracks on test pieces tribologically stresses under high-frequency, linear-oscillation motion using a SRV test machine by means of stylus tip profilometry.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

Status
Historical
Publication Date
30-Sep-2011
ICS
75.100 - Lubricants, industrial oils and related products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.L0 - Industrial Lubricants and Engineering Sciences of High Performance Fluids and Solids
Current Stage
Ref Project

Relations

Referred By
ASTM D5707-19 - Standard Test Method for Measuring Friction and Wear Properties of Lubricating Grease Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
Effective Date
01-Oct-2011
Referred By
ASTM D8503-23 - Standard Test Method for Determining the Scuffing Temperature Limit of Lubricating Oils Using the SRV Test Machine
Effective Date
01-Oct-2011
Referred By
ASTM D7594-19 - Standard Test Method for Determining Fretting Wear Resistance of Lubricating Greases Under High Hertzian Contact Pressures Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
Effective Date
01-Oct-2011
Referred By
ASTM D6425-19 - Standard Test Method for Measuring Friction and Wear Properties of Extreme Pressure (EP) Lubricating Oils Using SRV Test Machine
Effective Date
01-Oct-2011

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ASTM D7755-11 - Standard Practice for Determining the Wear Volume on Standard Test Pieces Used by High-Frequency, Linear-Oscillation (SRV) Test MachineASTM D7755-11 - Standard Practice for Determining the Wear Volume on Standard Test Pieces Used by High-Frequency, Linear-Oscillation (SRV) Test Machine
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ASTM D7755-11 - Standard Practice for Determining the Wear Volume on Standard Test Pieces Used by High-Frequency, Linear-Oscillation (SRV) Test Machine
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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: D7755 − 11
Standard Practice for
Determining the Wear Volume on Standard Test Pieces Used
1
by High-Frequency, Linear-Oscillation (SRV) Test Machine
This standard is issued under the fixed designation D7755; 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.
1. Scope Properties of Lubricating Greases Using a High-
Frequency, Linear-Oscillation (SRV) Test Machine
1.1 This practice covers a procedure for determining the
D5707Test Method for Measuring Friction and Wear Prop-
wear volume W of wear scars and tracks on test pieces
V
erties of Lubricating Grease Using a High-Frequency,
tribologically stresses under high-frequency, linear-oscillation
Linear-Oscillation (SRV) Test Machine
motion using a SRV test machine by means of stylus tip
D6425Test Method for Measuring Friction and Wear Prop-
profilometry.
erties of Extreme Pressure (EP) Lubricating Oils Using
1.2 The values stated in SI units are to be regarded as the
SRV Test Machine
standard. The values given in parentheses are for information 4
2.2 DIN Standards:
only.
DIN 51631:1999-04Special-boiling-point spirit — Require-
1.3 This standard does not purport to address all of the
ments and testing
safety concerns, if any, associated with its use. It is the
DIN 51834-3:2008-12Testing of lubricants – Tribological
responsibility of the user of this standard to establish appro-
test in translatory oscillation apparatus – Part 3: Determi-
priate safety and health practices and determine the applica-
nation of tribological behaviour of materials in co-
bility of regulatory limitations prior to use.
operation with lubricants
DIN EN ISO 13565-2:1998Geometrical Product Specifica-
2. Referenced Documents
tions (GPS) – Surface texture: Profile method; Surfaces
2
having stratified functional properties – Part 2: Height
2.1 ASTM Standards:
characterizationusinglinearmaterialratiocurve(replaces
D2714Test Method for Calibration and Operation of the
of DIN 4776:1990: Measurement of surface roughness;
Falex Block-on-Ring Friction and Wear Testing Machine
parameters R ,R ,R ,M ,M for the description of
D2782Test Method for Measurement of Extreme-Pressure K PK VK r1 r2
the material portion)
Properties of Lubricating Fluids (Timken Method)
D3702Test Method for Wear Rate and Coefficient of Fric-
3. Terminology
tion of Materials in Self-Lubricated Rubbing Contact
3.1 Definitions:
Using a Thrust Washer Testing Machine
3.1.1 Hertzian contact area, n—the apparent area of contact
D4175 Terminology Relating to Petroleum, Petroleum
betweentwonon-conformingsolidbodiespressedagainsteach
Products, and Lubricants
other.
D5620Test Method for Evaluating Thin Film Fluid Lubri-
cantsinaDrainandDryModeUsingaPinandVeeBlock
3.1.2 Hertzian contact pressure, n—magnitude of the pres-
3
Test Machine (Withdrawn 2010)
sure at any specified location in a Hertzian contact area, as
D5706Test Method for Determining Extreme Pressure
calculated from Hertz’s equations of elastic deformation. The
Hertzian contact pressure can also be calculated and reported
as maximum value P in the centre of the contact or as
max
1
This practice is under the jurisdiction ofASTM Committee D02 on Petroleum
P as average over the total contact area. D4175
average
Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom-
3.1.3 seizure, n—localized fusion of metal between the
mittee D02.L0 on Industrial Lubricants and Engineering Sciences of High Perfor-
mance Fluids and Solids. rubbing surfaces of the test pieces. D5706
Current edition approved Oct. 1, 2011. Published November 2011. DOI:
3.1.3.1 Discussion—Seizure is usually indicated by a sharp
10.1520/D7755–11.
increase in coefficient of friction, wear, or unusual noise and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
vibration. In this test method, increase in coefficient of friction
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.
3 4
The last approved version of this historical standard is referenced on Available from Deutsches Institut fur Normung e.V.(DIN), Beuth Verlag
www.astm.org. GmbH, Burggrafenstraße 6, D-10787 Berlin 30, Germany, http://www.din.de.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7755 − 11
¯
NOTE 1—R is smaller than R. The wear volumes are marked in blue.
FIG. 2 Schematic Illustration of the Segmentation of the Wear
FIG. 1 Ball–Comparison o
...

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5.1 The low-temperature, low-shear-rate viscosity of automatic transmission fluids, gear oils, torque and tractor fluids, and industrial and automotive hydraulic oils (see Appendix X4) are of considerable importance to the proper operation of many mechanical devices. Measurement of the viscometric properties of these oils and fluids at low temperatures is often used to specify their acceptance for service. This test method is used in a number of specifications.  
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5.1 This test method can be used to determine wear properties and coefficient of friction of lubricating greases at selected temperatures and loads specified for use in applications where high-speed vibrational or start-stop motions are present for extended periods of time under initial high Hertzian point contact pressures. This test method has found application in qualifying lubricating greases used in constant velocity joints of front-wheel-drive automobiles and for lubricating greases used in roller bearings. Users of this test method should determine whether results correlate with field performance or other applications.
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1.3 Spectra and distribution profiles presented herein are for illustrative purposes only and are not to be construed as representing or establishing lubricant or machinery guidelines.  
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1.1 This test method covers quantitative procedures for the evaluation of the compatibility of automotive engine oils with several reference elastomers typical of those used in the sealing materials in contact with these oils. Compatibility is evaluated by determining the changes in volume, Durometer A hardness, and tensile properties when the elastomer specimens are immersed in the oil for a specified time and temperature.  
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1.3 This test method provides a preliminary or first order evaluation of oil/elastomer compatibility only. Because seals might be subjected to static or dynamic loads, or both, and they can operate over a range of conditions, a complete evaluation of the potential sealing performance of any elastomer-oil combination in any service condition usually requires tests additional to those described in this test method.  
1.4 The several reference elastomer formulations specified in this test method were chosen to be representative of those used in both heavy-duty diesel engines (detailed in Annex A1) and passenger-car spark-ignition engines (the latter are covered in Annex A2). The procedures described in this test method can, however, also be used to evaluate the compatibility of automotive engine oils with different elastomer types/formulations or different test durations and temperatures to those employed in this test method.
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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
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  • Standard
    9 pages
    English language
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ASTM
ASTM D7922-23(Test Method)
Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography

SIGNIFICANCE AND USE
5.1 Some glycol/antifreeze dilution of in-service engine oil is normal under typical operating conditions. However, excessive glycol dilution can lead to decreased performance, premature wear, or sudden engine failure. This test method provides a means of quantifying the level of glycol based antifreeze dilution, allowing the user to take necessary action.
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
    sale 15% off