ASTM D7918-17a
(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
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.
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Standards Content (Sample)
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.
Designation: D7918 − 17a
Standard Test Method for
Measurement of Flow Properties and Evaluation of Wear,
Contaminants, and Oxidative Properties of Lubricating
1
Grease by Die Extrusion Method and Preparation
This standard is issued under the fixed designation D7918; 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* D6595 Test Method for Determination of Wear Metals and
Contaminants in Used Lubricating Oils or Used Hydraulic
1.1 This test method covers the determination and evalua-
Fluids by Rotating Disc ElectrodeAtomic Emission Spec-
tion of flow properties, wear levels, contaminants, and oxida-
trometry
tive condition of new and in-service lubricating grease.
D7527 Test Method for Measurement of Antioxidant Con-
1.2 This test method provides guidance on evaluating in-
tent in Lubricating Greases by Linear SweepVoltammetry
service grease samples, NLGI grades 00 to 3, for wear,
D7546 Test Method for Determination of Moisture in New
consistency, contamination, and oxidation.
and In-Service Lubricating Oils andAdditives by Relative
1.3 The values stated in SI units are to be regarded as the
Humidity Sensor
standard. The values given in parentheses are for information
D7718 Practice for Obtaining In-Service Samples of Lubri-
only.
cating Grease
1.3.1 Exception—The exception to this will be where units
D7843 Test Method for Measurement of Lubricant Gener-
of references were developed by the developers of the test
ated Insoluble Color Bodies in In-Service Turbine Oils
equipment and necessary to report the results of the test.
using Membrane Patch Colorimetry
E177 Practice for Use of the Terms Precision and Bias in
1.4 This standard does not purport to address all of the
ASTM Test Methods
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
3. Terminology
dance with internationally recognized principles on standard-
3.1 Definitions:
ization established in the Decision on Principles for the
3.1.1 active grease sampling device, n—device designed to
Development of International Standards, Guides and Recom-
take an active sample of a lubricating grease from a bearing,
mendations issued by the World Trade Organization Technical
gear, or drive shaft located in a grease lubricated component.
Barriers to Trade (TBT) Committee.
D7718
3.1.1.1 Discussion—The Grease Thief (trademarked) Type
2. Referenced Documents
3
2 is a tool which meets this description and can be used to
2
2.1 ASTM Standards:
obtain an active grease sample from a lubricated component.A
D217 Test Methods for Cone Penetration of Lubricating
full description and dimensions of this device can be found in
Grease
Annex A2.
1
This test method is under the jurisdiction of ASTM Committee D02 on
3
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of The Grease Thief Type I and Type II is described in US Patent No. 7984661.
Subcommittee D02.96.07 on Integrated Testers, Instrumentation Techniques for Interested parties are invited to submit information regarding the identification of an
In-Service Lubricants. alternative(s) to this patented item to the ASTM International Headquarters. Your
Current edition approved Nov. 15, 2017. Published December 2017. Originally comments will receive careful consideration at a meeting of the responsible
approved in 2015. Last previous edition approved in 2017 as D7918 – 17. DOI: technical committee, which you may attend. The sole source of the Grease Thief
10.1520/D7918-17A. Type I and Type II are known to the committee is York Laboratories, LLC located
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or at 410 Kings Mill Rd., York, PA 17401. If you are aware of alternative suppliers,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM please provide this information to ASTM International Headquarters. Your com-
Standards volume information, refer to the standard’s Document Summary page on ments will receive careful consideration at a meeting of the responsible technical
1
the ASTM website. committee, which you may attend.
*A Summary of Changes
...
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: D7918 − 17 D7918 − 17a
Standard Test Method for
Measurement of Flow Properties and Evaluation of Wear,
Contaminants, and Oxidative Properties of Lubricating
1
Grease by Die Extrusion Method and Preparation
This standard is issued under the fixed designation D7918; 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*
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 safety, health, and healthenvironmental 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D217 Test Methods for Cone Penetration of Lubricating Grease
D6595 Test Method for Determination of Wear Metals and Contaminants in Used Lubricating Oils or Used Hydraulic Fluids by
Rotating Disc Electrode Atomic Emission Spectrometry
D7527 Test Method for Measurement of Antioxidant Content in Lubricating Greases by Linear Sweep Voltammetry
D7546 Test Method for Determination of Moisture in New and In-Service Lubricating Oils and Additives by Relative Humidity
Sensor
D7718 Practice for Obtaining In-Service Samples of Lubricating Grease
D7843 Test Method for Measurement of Lubricant Generated Insoluble Color Bodies in In-Service Turbine Oils using
Membrane Patch Colorimetry
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions:
3.1.1 active grease sampling device, n—device designed to take an active sample of a lubricating grease from a bearing, gear,
or drive shaft located in a grease lubricated component. D7718
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
D02.96.07 on Integrated Testers, Instrumentation Techniques for In-Service Lubricants.
Current edition approved May 1, 2017Nov. 15, 2017. Published July 2017December 2017. Originally approved in 2015. Last previous edition approved in 20152017 as
D7918 – 15.D7918 – 17. DOI: 10.1520/D7918-17.10.1520/D7918-17A.
2
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 ----------------------
D7918 − 17a
3.1.1.1 Discussion—
3
The Grease Thief (trademarked) Type 2 is a tool which meets this description and can be used to obtain an active grease sample
from a lubricated component. A full description and dimensions of this device can be found in Annex A2.
3.1.2 active sampling, v—to use a sampling device to actively gather an in-service lubricating grease sample from a
grease-lubricated component. D7718
3.1.3 calibration, n—the determination of the values of the significant parameters by comparison with values indicated by a set
of reference standards. D6595
3.1.4 consistency, n—of lubricating gr
...
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: D7918 − 17a
Standard Test Method for
Measurement of Flow Properties and Evaluation of Wear,
Contaminants, and Oxidative Properties of Lubricating
1
Grease by Die Extrusion Method and Preparation
This standard is issued under the fixed designation D7918; 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* D6595 Test Method for Determination of Wear Metals and
Contaminants in Used Lubricating Oils or Used Hydraulic
1.1 This test method covers the determination and evalua-
Fluids by Rotating Disc Electrode Atomic Emission Spec-
tion of flow properties, wear levels, contaminants, and oxida-
trometry
tive condition of new and in-service lubricating grease.
D7527 Test Method for Measurement of Antioxidant Con-
1.2 This test method provides guidance on evaluating in-
tent in Lubricating Greases by Linear Sweep Voltammetry
service grease samples, NLGI grades 00 to 3, for wear,
D7546 Test Method for Determination of Moisture in New
consistency, contamination, and oxidation.
and In-Service Lubricating Oils and Additives by Relative
1.3 The values stated in SI units are to be regarded as the
Humidity Sensor
standard. The values given in parentheses are for information
D7718 Practice for Obtaining In-Service Samples of Lubri-
only.
cating Grease
1.3.1 Exception—The exception to this will be where units
D7843 Test Method for Measurement of Lubricant Gener-
of references were developed by the developers of the test
ated Insoluble Color Bodies in In-Service Turbine Oils
equipment and necessary to report the results of the test.
using Membrane Patch Colorimetry
E177 Practice for Use of the Terms Precision and Bias in
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- Determine the Precision of a Test Method
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor- 3. Terminology
dance with internationally recognized principles on standard-
3.1 Definitions:
ization established in the Decision on Principles for the
3.1.1 active grease sampling device, n—device designed to
Development of International Standards, Guides and Recom-
take an active sample of a lubricating grease from a bearing,
mendations issued by the World Trade Organization Technical
gear, or drive shaft located in a grease lubricated component.
Barriers to Trade (TBT) Committee.
D7718
3.1.1.1 Discussion—The Grease Thief (trademarked) Type
2. Referenced Documents
3
2 is a tool which meets this description and can be used to
2
2.1 ASTM Standards:
obtain an active grease sample from a lubricated component. A
D217 Test Methods for Cone Penetration of Lubricating
full description and dimensions of this device can be found in
Grease
Annex A2.
1
This test method is under the jurisdiction of ASTM Committee D02 on
3
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of The Grease Thief Type I and Type II is described in US Patent No. 7984661.
Subcommittee D02.96.07 on Integrated Testers, Instrumentation Techniques for Interested parties are invited to submit information regarding the identification of an
In-Service Lubricants. alternative(s) to this patented item to the ASTM International Headquarters. Your
Current edition approved Nov. 15, 2017. Published December 2017. Originally comments will receive careful consideration at a meeting of the responsible
approved in 2015. Last previous edition approved in 2017 as D7918 – 17. DOI: technical committee, which you may attend. The sole source of the Grease Thief
10.1520/D7918-17A. Type I and Type II are known to the committee is York Laboratories, LLC located
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or at 410 Kings Mill Rd., York, PA 17401. If you are aware of alternative suppliers,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM please provide this information to ASTM International Headquarters. Your com-
Standards volume information, refer to the standard’s Document Summary page on ments will receive careful consideration at a meeting of the responsible technical
1
the ASTM website. committee, which you may attend.
*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. Un
...
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