1、Designation: F 2511 05e1Standard Specification forRollers, Bearing, Needle, Ferrous, Solid1This standard is issued under the fixed designation F 2511; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num
2、ber in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.e1NOTE8.1.2.1 was editorially corrected in August 2007.1. Scope1.1 T
3、his specification covers the procurement requirementsfor solid ferrous needle bearing rollers including the MS19065spherical ended solid ferrous needle rollers as specified inSpecification F 2443.1.2 Intended UseThe rollers covered in this specificationare intended for use in bearings and bearing ap
4、plications.1.3 This specification contains many of the requirements ofMIL-R-22440, which was originally developed by the Depart-ment of Defense and maintained by the Defense Supply Centerin Richmond. The following government activity codes may befound in the Department of Defense, Standardization Di
5、rectorySD-1.2Preparing Activity Custodians Review ActivitiesDLA-GS4 Army-AT Army-CR4Navy-OS Air Force-84Air Force-99DLA-GS41.4 The values stated in inch-pound units are to be regardedas the standard. The values given in parenthesis are providedfor information only.1.5 This standard does not purport
6、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 Documents2.1 ASTM Standards:3A 295/A
7、 295M Specification for High-CarbonAnti-FrictionBearing SteelA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsD 1974 Practice for Methods of Closing, Sealing, andReinforcing Fiberboard BoxesD 3951 Practice for Commercial PackagingD 3953 Specification for Strapping
8、, Flat Steel and SealsD 5118/D 5118M Practice for Fabrication of FiberboardShipping BoxesD 5168 Practice for Fabrication and Closure of Triple-WallCorrugated Fiberboard ContainersD 6251/D 6251M Specification for Wood-Cleated Panel-board Shipping BoxesE18 Test Methods for Rockwell Hardness and Rockwe
9、llSuperficial Hardness of Metallic MaterialsE 140 Hardness Conversion Tables for Metals RelationshipAmong Brinell Hardness, Vickers Hardness, RockwellHardness, Superficial Hardness, Knoop Hardness, andScleroscope HardnessE 381 Method of Macroetch Testing Steel Bars, Billets,Blooms, and ForgingsE 384
10、 Test Method for Microindentation Hardness of Ma-terialsF 2443 Specification for Roller, Bearing, Needle Ferrous,Solid, Spherical End2.2 ANSI Standards:4ASME B46.1 Surface Texture (Surface Roughness, Wavi-ness, and Lay)ASME Y14.5 Dimensioning and TolerancingANSI/ASQ Z1.4 Sampling Procedures and Tabl
11、es for In-spection by Attributes2.3 ISO Standards:5ISO 5593 Rolling BearingsVocabularyISO 100121 Quality Assurance Requirements for Measur-ing Equipment2.4 Military Standards:61This specification is under the jurisdiction ofASTM Committee F34 on RollingElement Bearings and is the direct responsibili
12、ty of Subcommittee F34.01 onRolling Element.Current edition approved Aug. 1, 2005. Published August 2005.2The 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/.3For referenc
13、ed 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 standards Document Summary page onthe ASTM website.4Available from American National Standards Institute (ANSI), 25 W. 43rd S
14、t.,4th Floor, New York, NY 10036.5Available from International Organization for Standardization (ISO), 1 rue deVaremb, Case postale 56, CH-1211, Geneva 20, Switzerland.6Available from the DODs Assist internet site located at: http:/assist.daps.dla.mil/online/start/.1Copyright ASTM International, 100
15、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.MIL-PRF-121 Barrier Materials, Greaseproof, Waterproof,Flexible, Heat-SealableMIL-STD-129 Military Marking for Shipment and StorageMIL-PRF-131 Barrier Materials, Watervaporproof,Greaseproof, Flexible, Heat-SealableMIL-S
16、TD-2073-1 DOD Standard Practice for MilitaryPackagingMIL-PRF-22191 Barrier Materials, Transparent, Flexible,Heat-SealableMIL-R-22440 Roller, Bearing, Needle, Ferrous, Solid2.5 SAE Standards:7SAEAMS-STD-66 Steel, Chemical Composition and Hard-enabilitySAE J418a Grain Size Determination of Steel3. Ter
17、minology3.1 DefinitionsFor definitions of terms used in this speci-fication, refer to ISO 5593.3.2 Definitions of Terms Specific to This Standard:3.2.1 heat of steelbatch of steel that was produced in asingle furnace run. Steel from the same “heat” may be found inseveral different billets, bars, or
18、coils of wire.3.2.2 lotlot shall consist of the finished rollers of the sametype, diameter, length, and material, manufactured under thesame conditions, and submitted for acceptance at the sametime. This inspection lot shall be identified by a unique number(manufacturers lot control number) that wil
19、l provide thetraceability of the rollers to be finished bearing assemblies.3.2.3 surface roughness (Ra)the Ra, or roughness aver-age, surface roughness is the arithmetic average of the absolutevalue of the departure of the filtered roughness profile mea-sured from the mean line. Ra values are normal
20、ly specified inmicroinches (micrometres). 1 in. = 0.0254 m (1 m = 39.37in.). See ASME B46.1 for more information on surfaceroughness.4. Classification4.1 The rollers shall be of the following types, as specifiedin the contract or order (see Section 5 and Fig. 1):4.1.1 Type ISpherical end.4.1.2 Type
21、IIFlat end.4.1.3 Type IIIBall end.4.1.4 Type IVCrankpin end.4.1.5 Type VConical end.4.1.6 Type VITrunnion end.5. Ordering Information5.1 Procurement documents should specify the following:5.1.1 Title, number, and date of this specification,5.1.2 Type of rollers required (see 4.1),5.1.3 Material requ
22、ired, if different than 6.1,5.1.4 Diameter and length of rollers required (see 8.1),5.1.5 Quantity required,5.1.6 Dimensions and tolerances governing formulation ofroller ends, if different than 8.1,5.1.7 Inspection records required (see 16.1.1),5.1.8 Required levels of packaging (see 15.1),5.1.9 Pr
23、eservative required, if different than 15.2.1.2 and15.2.1.3,5.1.10 Method of unit packaging required (see 15.2.1.3),5.1.11 Number of rollers per unit package (see 15.2.1.3),5.1.12 When case liner is not required (see 15.3.1.3), and5.1.13 Special marking, if required (see 15.4).6. Materials and Manuf
24、acture6.1 MaterialUnless otherwise specified in the contract ororder (see Section 5), the rollers shall be manufactured fromchrome alloy steel conforming to the chemical composition ofsteel number AISI E52100 of SAE AMS-STD-66, AMS 6440or AMS 6444. The steel shall be homogeneous in structure,free fr
25、om pipes, seams, laminations, bursts, flakes, excessivesegregation, and other detrimental defects (see 11.2.1). Thesteel shall have an austenite grain size of 7 or finer (see 11.3.3).The rollers shall be free from surface decarburization (see11.2.2).6.1.1 Inclusion RatingThe chrome alloy steel shall
26、 notexceed the inclusion rating specified for billets for wire androds used in the manufacture of balls and rollers, as specifiedin Specification A 295/A 295M.7. Other Requirements7.1 HardnessThe rollers shall have a uniform hardness of60 to 64 Rockwell C or equivalent (see 11.2.3).8. Dimensions and
27、 Permissible Variations8.1 Construction and DimensionsThe rollers shall be ofthe type, diameter, and length specified in the contract or order(see Section 5) and shall be of solid construction. An illustra-tion of the types of rollers covered herein is shown in Fig. 1.Unless otherwise specified in t
28、he contract or order (see Section5), dimensions and tolerances governing the formation of theends of the roller shall be in accordance with commercialpractice. Dimensions and tolerances shall be interpreted inaccordance was ASME Y14.5.8.1.1 DiameterThe diameter of the roller shall be within+0.0000 i
29、n. (+0.000 mm) to 0.0002 in. (0.005 mm) of thevalue specified in the contract or order (see Section 5).8.1.2 Length:8.1.2.1 Types I, III, V, and VIThe length of the roller shallbe within +0.000 in. (+0.00 mm) to 0.020 in. (0.51 mm) ofthe value specified in the contract or order (see Section 5).8.1.2
30、.2 Type IIThe length of the roller shall be within+0.000 in. (+0.00 mm) to 0.006 in. (0.15 mm) of the valuespecified in the contract or order (see Section 5).8.1.2.3 Type IVThe length of the roller shall be within+0.000 in. (+0.00 mm) to 0.010 in. (0.25 mm) of the valuespecified in the contract or o
31、rder (see Section 5).9. Workmanship, Finish, and Appearance9.1 Visual AppearanceThe cylindrical surface of theroller shall be free from scratches, pits, rust, indications of softspots, and other surface imperfections.7Available from Society of Automotive Engineers (SAE), 400 CommonwealthDr., Warrend
32、ale, PA 15096-0001.F251105e12FIG. 1 Types of RollersF251105e139.2 Surface RoughnessThe surface roughness of the rollerdiameter shall not exceed 8 in. Ra (0.20 m Ra). Surfaceroughness shall be interpreted in accordance with AS-ME B46.1.10. Sampling10.1 For ExaminationA sample of rollers shall be se-l
33、ected from each lot by the inspector in accordance with theprocedures of ANSI/ASQ Z1.4 with an AQL of 1.0%.10.2 For Tests A sample of rollers shall be selected fromeach lot by the inspector in accordance with the procedures ofANSI/ASQ Z1.4 with an AQL of 4.0%.11. Inspection11.1 Examination:11.1.1 Di
34、mensional and Visual ExaminationThe samplerollers, selected in accordance with 10.1, shall be dimension-ally and visually examined to determine compliance with 8.1and 9.1 respectively. Any unit of the sample containing one ormore defects shall be rejected. If no defects are found in thesample, the s
35、ample lot shall be accepted. If any defects arefound in the sample, the entire lot shall be inspected for thedefective characteristic and defective parts removed from thelot.11.1.2 Surface Roughness ExaminationThe sample roll-ers, selected in accordance with 10.1, shall be examined todetermine compl
36、iance with 9.2. Any unit of the sample, whichdoes not comply with the requirements specified in 9.2, shall berejected. Lot acceptance shall be in accordance with 10.1.Ifnodefects are found in the sample, the sample lot shall beaccepted. If any defects are found in the sample, the entire lotshall be
37、inspected for the defective characteristic and defectiveparts removed from the lot.11.2 Tests:11.2.1 Hot Acid Etch TestThe sample rollers, selected inaccordance with 10.2, shall be etched for a minimum period of15 min in a solution of 50 % hydrochloric acid and 50 % water.The temperature of the solu
38、tion shall be 160F to 180F. Afteretching, the sample rollers shall be examined at a magnificationof 4 diameters. If any unit of the sample contains one or moredefects, such as cracks, seams, laps, pits, or other detrimentaldefects (see 6.1 and 9.1), the lot shall be rejected.11.2.2 Decarburization T
39、estThe sample rollers, selectedin accordance with 10.2, shall be totally immersed in 5 % Nitalsolution (concentrated nitric acid in alcohol) for a minimumperiod of 30 s. The temperature of the solution shall be 75 to85F. If any unit of the sample exhibits areas of white to lightgray, the lot shall b
40、e rejected.11.2.3 Hardness TestThe sample rollers, selected in ac-cordance with 10.2, shall be tested for compliance with 7.1.The test procedures shall be in accordance with Test MethodsE18Rockwell for superficial hardness tests and Test MethodE 384 for microhardness testing. Tables E 140 shall be u
41、sed forhardness conversion to the C Rockwell scale. The rollers shallbe subjected to the test on flats of sufficient width, and materialof sufficient thickness, to give a true reading. For rollers lessthan116 in. (1.6 mm) in diameter, an appropriate superficialhardness or microhardness method shall
42、be used. If any unit ofthe sample does not comply with the requirements of 7.1, thelot shall be rejected. The manufacturer may have a standardrepair procedure to retemper the rollers. The rollers wouldrequire reinspection after a retempering process.11.3 Inspection of MaterialThe material used in th
43、emanufacture of the rollers furnished under this specificationshall have been inspected in accordance with and passed thefollowing examination and tests.11.3.1 Chemical AnalysisA chemical analysis shall bemade on each heat of steel. The samples for analysis shall beselected from the billets, bars, o
44、r wire used in the manufactureof the rollers. The chemical analysis shall be conducted inaccordance with the test methods of the material specificationor Test Methods, Practices, and Terminology A 751. Thechemical composition determined by the above proceduresshall be within the check analysis toler
45、ances specified in SAEAMS-66 and standard industry practice.11.3.2 Macro-Examination Amacro-examination shall bemade on each heat of steel. The samples for examination shallbe selected from the billets for the wire or rods used in themanufacture of the rollers. The samples shall be selected inaccord
46、ance with Method E 381. The macro-examination shallbe conducted in accordance with Method E 381. The qualityand cleanliness of the steel as indicated by the results of themacro examination shall be equal to or better than macrographsS2, R2, and C2 of Method E 381 with defects Dl through D8unacceptab
47、le.11.3.3 Austenitic Grain Size TestAn austenitic grain sizetest shall be made on each heat of steel. The samples for testshall be selected from the billets for the wire or rods used inaccordance with SAE J418a. The austenitic grain size deter-mined by the above procedures shall be within the ranges
48、pecified in 6.1.11.3.4 Inclusion Rating TestAn inclusion rating test shallbe made on each heat of steel. The samples for test shall beselected from the billets for the wire or rods used in themanufacture of the rollers. The test shall be conducted inaccordance with the inclusion rating test specifie
49、d in Specifi-cation A 295/A 295M. The inclusion rating determined by theabove procedures shall conform to the requirements specifiedin 6.1.1.11.4 Preservation, Packaging, Packing, and MarkingTheinspector shall ascertain that the preservation, packaging,packing, and marking of rollers furnished under this specifica-tion are in accordance with the requirements of Section 15. Ifno preservation, packaging, packing, or marking defects arefound, the shipment shall be accepted.11.4.1 Classification of DefectsFor packing and marking
