1、Designation:F244304(Reapproved 2012)Standard Specification forRoller,Bearing,Needle,Ferrous,Solid,Spherical End1This standard is issued under the fixed designation F2443;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of las
2、t 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 ferrous needle
3、rollers havingspherical ends.1.2 Spherical-ended needle rollers designed to this specifi-cation are intended for use as bearing components.A comple-ment of rollers is run on a hardened(HRC 58-65,see TestMethods E18)shaft and in a hardened(HRC 58-65)housingbore to form the bearing.1.3 The values stat
4、ed in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This specification contains many of the requirements ofMS19065,which was originally developed by the
5、Departmentof Defense and maintained by the Defense Supply CenterRichmond.The following government activity codes may befound in the Department of Defense,Standardization DirectorySD-1.2Preparing activityCustodiansReview ActivitiesDLAGS4ArmyATNavyMCNavyOSAir Force84Air Force99DLAGS42.Referenced Docum
6、ents2.1 ASTM Standards:3A295 Specification for High-Carbon Anti-Friction BearingSteelE18 Test Methods for Rockwell Hardness of Metallic Ma-terials2.2 ABMA Standard:4ABMA 4 Tolerance Definitions and Gauging Practices forBall and Roller Bearings2.3 ANSI Standard:5ANSI/ASQ Z1.4 Sampling Procedures and
7、Tables for In-spection of Attributes2.4 ASME Standards.6ASME B46.1 Surface Texture,Surface Roughness Wavinessand LayASME Y14.5M Dimensioning and Tolerancing2.5 ISO Standard:5ISO 5593 Rolling BearingsVocabulary2.6 Military Standard.7MIL-STD-129 Marking for Shipping and StorageMIL-STD-130 Identificati
8、on Marking of U.S.Military Prop-ertyMIL-DTL-197 Packaging of Bearing,Associated Parts andSubassemblies2.7 SAE Standards:8SAE J404 Chemical Compositions of SAE Alloy SteelsSAEAMS 66 Steel:Chemical Composition and Hardenabil-itySAE AMS 6440 Specification for Steel Bars,Forging andTubingSAE AMS 6444 Sp
9、ecification for Steel Bars,Forging andTubing Premium Aircraft Quality for Bearing Application3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to ABMA 4 and ISO 5593.1This specification is under the jurisdiction ofASTM Committee F34 on RollingElement Bearings and i
10、s the direct responsibility of Subcommittee F34.01 onRolling Element.Current edition approved Dec.1,2012.Published January 2013.Originallyapproved in 2004.Last previous edition approved in 2004 as F244304.DOI:10.1520/F2443-04R12.2The Military codes that are listed in SD-1 give the address and phone
11、numbersof the DoD contacts.These are found in the DoDs ASSIST website:http:/assist.daps.dla.mil/online/start/.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standar
12、ds Document Summary page onthe ASTM website.4Available from Techstreet,3916 Ranchero Dr.Ann Arbor,MI,48108,http:/.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.6Available from American Society of Mechanical Engineers(ASME),AS
13、MEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.org.7AvailableontheDODs ASSISTinternetsitelocatedat:http:/assist.daps.dla.mil/online/start/.8Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/aerospace.sae.org.Copyright ASTM I
14、nternational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 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 ro
15、ller,including:4.1.3.1 Diameter,in.(mm),4.1.3.2 Length,in.(mm),4.1.3.3 Effective length,in.(mm),4.1.4 Level of packaging and preservation(for militaryprocurements),and4.1.5 Required certifications.5.Materials and Manufacture5.1 RollersRollers shall be manufactured of chrome alloysteel E50100,E51100,
16、E52100,in accordance with SAE AMS66,SAE AMS 6440,SAE AMS 6444,and Specification A295.5.2 The use of recycled materials that meet the requirementsof the applicable material specification without jeopardizingthe intended use of the item is encouraged.5.3 Material certifications are required for all materialsused.Each lot of needle rollers shall be traceable to thesecertifications.These certifications shall be available for reviewby the purchaser and provided to the purchaser when specifiedin the c
