1、Designation:F259006(Reapproved 2013)Standard Specification forBearing,Roller,Thrust,Two Channeled Race Surface,Rigidor Flat Seat Type1This standard is issued under the fixed designation F2590;the number immediately following the designation indicates the year oforiginal adoption or,in the case of re
2、vision,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.1.Scope1.1 This specification covers requirements for rigid or flatseat type,two channeled race surface,thrust roll
3、er bearings.1.2 Intended UseThe bearings covered in this specifica-tion are intended for use in slow rotating or oscillatingapplications where pure thrust loads are applied.1.3 This specification contains many of the requirements ofMS17169,which was originally developed by the Departmentof Defense a
4、nd maintained by the Defense Supply Center inRichmond.The following government activity codes may befound in the Department of Defense,Standardization DirectorySD-1.2Preparing ActivityCustodiansReview ActivitiesDLA-GS4Army-ATArmy-MINavy-MCAir Force-84Air Force-99DLA-GS41.4 For design feature purpose
5、s,this specification takesprecedence over procurement documents referenced herein.1.5 The values stated 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.1.6
6、This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents
7、2.1 ABMA Standard:3ABMA Std.1 Terminology for Anti-Friction Ball and RollerBearings and Parts2.2 ASME Standard:4ASMEB46.1 SurfaceTexture(SurfaceRoughness,Waviness,and Lay)2.3 ISO Standard:5ISO 5593 Rolling BearingsVocabulary2.4 Military Standards:6MIL-STD-102 Electronic and Electrical Component Part
8、sMIL-STD-129 Military Marking for Shipment and StorageMIL-STD-130 Identification Marking of U.S.Military Prop-erty2.5 SAE Standard:7SAE AMS-STD-66 Steel:Chemical Composition and Hard-enability3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to ABMA Std.1 and ISO 5
9、593.3.2 Definitions of Terms Specific to This Standard:3.2.1 steering pivot ratingsteering pivot rating is used todetermine what size bearing is needed for a particular appli-cation.Bearings with this rating were originally designed andintended for use in the king pins of front axles on large trucks
10、.In this application,the bearings are subject to only oscillationmotion,with a lot of shock and vibration loading.The steeringpivot rating includes a safety factor of approximately 2.0 tocompensate for the indeterminate shock and vibration.Therefore,when these bearings are used in crane hook appli-c
11、ations or other similar steady pull applications,the steeringpivot rating can be doubled.It should also be kept in mind thatthese bearings were designed for oscillating or slow rotationapplications only and should never be operated at speedshigher than 5 rpm.3.2.2 intermittent operation ratingthe in
12、termittent opera-tion rating is used to determine what size bearing is needed for1This specification is under the jurisdiction ofASTM Committee F34 on RollingElement Bearings and is the direct responsibility of Subcommittee F34.04 onAutomotive/Industrial Bearing.Current edition approved May 1,2013.P
13、ublished May 2013.Originallyapproved in 2006.Last previous edition approved in 2006 as F2590 061.DOI:10.1520/F2590-06R13.2The Military codes that are listed in SD-1 give the address and phone numbersof the DoD contacts.These are found in the DoDs ASSIST website http:/assist.daps.dla.mil/online/start
14、/3Available from Techstreet,777 E.Eisenhower Parkway,Ann Arbor,MI 48108.4Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Three Park Ave.,New Your,NY 10016-5990.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY
15、 10036.6AvailablefromtheDODs Assistinternetsitelocatedat:http:/assist.daps.dla.mil/online/start/.7Available from the Society of Automotive Engineers(SAE),400 Common-wealth Dr.Warrendale,PA 15096-0001.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.Unite
16、d States1 a particular application.Bearings with this rating were origi-nally designed and intended for rotational applications operat-ing at speeds of 50 rpm or less.4.Ordering Information4.1 Procurement documents should specify the following:4.1.1 Title,number,and date of this specification,4.1.2 Part Number(see 9.1),4.1.3 Nominal dimensions of bearing(bore,outsidediameter,height),4.1.4 Quantity required,4.1.5 Inspection records required,and4.1.6 Required packaging.5.Materials and Manufacture5
