ASTM F2431-04(2018)
(Specification)Standard Specification for Ring Bearing, Inner: For Needle Roller Bearing with Thick Outer Ring
Standard Specification for Ring Bearing, Inner: For Needle Roller Bearing with Thick Outer Ring
ABSTRACT
This specification covers inner rings for needle roller bearings having thick outer rings. The inner rings being specified are intended for use on unhardened shafts. Inner rings designed to this specification are intended for use in applications requiring high radial load with minimal angular shaft misalignment. Heat treatment and protective coating of the material shall meet the specified requirements.
SCOPE
1.1 This specification covers inner rings for needle roller bearings having thick outer rings.
1.2 The inner rings being specified are intended for use on unhardened shafts in conjunction with the MS51961 needle roller bearings specified in Specification F2246.
1.2.1 For needle roller bearings with thin outer rings (Specification F2162, MS17131, MS52141) use inner rings specified in Specification F2163.
1.3 Inner rings designed to this specification are intended for use in applications requiring high radial load with minimal angular shaft misalignment.
1.4 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.
1.5 This specification contains many of the requirements of MS51962, which was originally developed by the Department of Defense and maintained by the Defense Supply Center in Richmond. The following government activity codes may be found in the Department of Defense, Standardization Directory SD-1.2
Preparing activity
Custodians
Review Activity
DLA–GS4
Army –AT
Air Force–84
Navy–OS
Air Force–-99
1.6 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.
General Information
Relations
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:F2431 −04 (Reapproved 2018)
Standard Specification for
Ring Bearing, Inner: For Needle Roller Bearing with Thick
Outer Ring
This standard is issued under the fixed designation F2431; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
1.1 This specification covers inner rings for needle roller 2.1 ASTM Standards:
bearings having thick outer rings. E18 Test Methods for Rockwell Hardness of Metallic Ma-
terials
1.2 The inner rings being specified are intended for use on
F2162 Specification for Bearing, Roller, Needle: Drawn
unhardened shafts in conjunction with the MS51961 needle
Outer Ring, Full Complement, Without Inner Ring, Open
roller bearings specified in Specification F2246.
and Closed End, Standard Type
1.2.1 For needle roller bearings with thin outer rings (Speci-
F2163 Specification for Ring, Bearing, Inner: for Needle
fication F2162, MS17131, MS52141) use inner rings specified
Roller Bearing With Drawn Outer Ring
in Specification F2163.
F2246 Specification for Bearing, Roller, Needle: Thick
1.3 Inner rings designed to this specification are intended
Outer Ring With Rollers and Cage
for use in applications requiring high radial load with minimal
2.2 ANSI Standard:
angular shaft misalignment.
ASME B46.1 Surface Texture (Surface Roughness,
1.4 The values stated in inch-pound units are to be regarded
Waviness, and Lay)
as standard. The values given in parentheses are mathematical
2.3 SAE Standards:
conversions to SI units that are provided for information only
SAE J404 Chemical Compositions of SAE Alloy Steels
and are not considered standard.
SAE AMSSTD66 Steel: Chemical Composition and Hard-
enability
1.5 This specification contains many of the requirements of
MS51962, which was originally developed by the Department 2.4 Military Standard.
of Defense and maintained by the Defense Supply Center in
MIL-STD-130 Identification Marking of U.S. Military Prop-
Richmond. The following government activity codes may be erty
found in the Department of Defense, Standardization Directory
MIL-STD-197 Packaging of Bearings, Associated Parts and
SD-1. Subassemblies
Preparing activity Custodians Review Activity 2.5 ABMA Standards:
DLA–GS4 Army –AT Air Force–84
ABMA 4 Tolerance Definitions and Gauging Practices for
Navy–OS
Ball and Roller Bearings
Air Force–-99
ABMA 18.2 Needle Roller Bearings Radial, Inch Design
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Barriers to Trade (TBT) Committee.
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
This specification is under the jurisdiction ofASTM Committee F34 on Rolling the ASTM website.
Element Bearings and is the direct responsibility of Subcommittee Automotive/ Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
Industrial Bearing. 4th Floor, New York, NY 10036, http://www.ansi.org.
Current edition approved Aug. 15, 2018. Published November 2018. Originally Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
approvedin2004.Lastpreviouseditionapprovedin2012asF2431–04(2012).DOI: PA 15096-0001, http://www.sae.org.
10.1520/F2431-04R18. Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
The Military codes that are listed in SD-1 give the address and phone numbers Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
of the DoD contacts. These are found in the DoD’s ASSIST website, http:// American Bearing Manufacturers Association 330 N. Wabash Ave, Ste 2000
quicksearch.dla.mil. Chicago, IL 60611, https://www.americanbearings.org/
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2431−04 (2018)
2.6 ISO Standard: 7.2 Rings are intended to be installed on shafts where
ISO 5593 Rolling Bearings—Vocabulary maximum taper does not exceed 0.0005 in./in. (0.0005 mm/
mm) of bearing width.
3. Terminology
7.3 Ring must clear the maximum shaft fillet radius shown
3.1 Definitions—For definitions of terms used in this
in the radius column of Table 1. The radii or chamfers on the
specification, refer to ABMA STD 4 and ISO 5593.
inner diameter of the ring may be unequal. Where the radii are
unequal, the surface with the larger relief should be mounted
4. Ordering Information
against the shaft shoulder. In rings where the inside diameter
4.1 When ordering parts in accordance with this
relief radii are not equal, the marking shall appear on the
specification, specify the following:
surface with the lesser radius.
4.1.1 ASTM designation number, including year of issue,
7.4 Rings shall contain between one and four oil holes, size
4.1.2 Dash number (see Table 1),
and number shall be in accordance with manufacturer’s stan-
4.1.3 Dimensions of inner ring, including:
dard practice.
4.1.3.1 Bore diameter, in. (mm),
7.5 Oil groove optional in accordance with manufacturer’s
4.1.3.2 Outside diameter, in. (mm),
4.1.3.3 Width, in. (mm), and standard practice
4.1.3.4 Radius, in. (mm),
8. Workmanship, Finish, and Appearance
4.1.4 Level of packaging and preservation (for Military
8.1 Surface Finish:
procurements).
8.1.1 Rings—The raceway surface (O.D.) of the inner ring
5. Materials and Manufacture
shall have a maximum surface roughness, in accordance with
ANSI B46.1, of 20 µin. Ra (0.51 µm Ra).
5.1 Inner Ring—Rings shall be manufactured of steel, alloy
or carbon, carburizing grade 4620, 4720, 8620, 8720, or 1018
9. Inspection
to 1022 or 1117; or SAE E51100, SAE E52100, in accordance
9.1 Inspection of the product shall be agreed upon between
with SAE AMS STD 66 or SAE 51100 or SAE J404.
the purchaser and the supplier as part of the purchase contract.
5.2 Theuseofrecycledmaterialsthatmeettherequirements
of the applicable material specification without jeopardizing 10. Rejection and Rehearing
the intended use of the item is encouraged.
10.1 Productsthatfailtoconformtotherequirementsofthis
specification may be rejected. Rejection should be reported to
6. Other Requirements
the producer or supplier promptly and in writing. In case of
6.1 Heat Treatment:
dissatisfaction with the results of the test, the producer or
...
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