1、Designation:F243104(Reapproved 2018)Standard Specification forRing Bearing,Inner:For Needle Roller Bearing with ThickOuter Ring1This standard is issued under the fixed designation F2431;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript 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.Scope1.1 This specification covers
3、 inner rings for needle rollerbearings having thick outer rings.1.2 The inner rings being specified are intended for use onunhardened shafts in conjunction with the MS51961 needleroller bearings specified in Specification F2246.1.2.1 For needle roller bearings with thin outer rings(Speci-fication F2
4、162,MS17131,MS52141)use inner rings specifiedin Specification F2163.1.3 Inner rings designed to this specification are intendedfor use in applications requiring high radial load with minimalangular shaft misalignment.1.4 The values stated in inch-pound units are to be regardedas standard.The values
5、given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This specification contains many of the requirements ofMS51962,which was originally developed by the Departmentof Defense and maintained by the Defense Supply Center
6、 inRichmond.The following government activity codes may befound in the Department of Defense,Standardization DirectorySD-1.2Preparing activityCustodiansReview ActivityDLAGS4Army ATAir Force84NavyOSAir Force-991.6 This international standard was developed in accor-dance with internationally recognize
7、d principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3E18 Test Methods for Rockwell
8、 Hardness of Metallic Ma-terialsF2162 Specification for Bearing,Roller,Needle:DrawnOuter Ring,Full Complement,Without Inner Ring,Openand Closed End,Standard TypeF2163 Specification for Ring,Bearing,Inner:for NeedleRoller Bearing With Drawn Outer RingF2246 Specification for Bearing,Roller,Needle:Thic
9、kOuter Ring With Rollers and Cage2.2 ANSI Standard:4ASMEB46.1 SurfaceTexture(SurfaceRoughness,Waviness,and Lay)2.3 SAE Standards:5SAE J404 Chemical Compositions of SAE Alloy SteelsSAE AMSSTD66 Steel:Chemical Composition and Hard-enability2.4 Military Standard.6MIL-STD-130 Identification Marking of U
10、.S.Military Prop-ertyMIL-STD-197 Packaging of Bearings,Associated Parts andSubassemblies2.5 ABMA Standards:7ABMA 4 Tolerance Definitions and Gauging Practices forBall and Roller BearingsABMA 18.2 Needle Roller Bearings Radial,Inch Design1This specification is under the jurisdiction ofASTM Committee
11、F34 on RollingElement Bearings and is the direct responsibility of Subcommittee Automotive/Industrial Bearing.Current edition approved Aug.15,2018.Published November 2018.Originallyapproved in 2004.Last previous edition approved in 2012 as F243104(2012).DOI:10.1520/F2431-04R18.2The Military codes th
12、at are listed in SD-1 give the address and phone numbersof the DoD contacts.These are found in the DoDs ASSIST website,http:/quicksearch.dla.mil.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volu
13、me information,refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.5Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.o
14、rg.6Available from DLA Document Services,Building 4/D,700 Robbins Ave.,Philadelphia,PA 19111-5094,http:/quicksearch.dla.mil.7American Bearing Manufacturers Association 330 N.Wabash Ave,Ste 2000Chicago,IL 60611,https:/www.americanbearings.org/Copyright ASTM International,100 Barr Harbor Drive,PO Box
15、C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the Wor
16、ld Trade Organization Technical Barriers to Trade(TBT)Committee.1 2.6 ISO Standard:8ISO 5593 Rolling BearingsVocabulary3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to ABMA STD 4 and ISO 5593.4.Ordering Information4.1 Whenorderingpartsinaccordancewiththisspecification,specify the following:4.1.1 ASTM designation number,including year of issue,4.1.2 Dash number(see Table 1),4.1.3 Dimensions of inner ring,including:4.1.3.1 Bore diameter,in.(mm),4.1.3.2 Outsid
