1、Designation: F2443 04 (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
2、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 Department of Defense.1. Scope1.1 This specification covers fer
3、rous needle 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
4、.3 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.1.4 This specification contains many of the requirements ofMS19065, which was original
5、ly developed by the 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 activity Custodians Review ActivitiesDLAGS4 ArmyAT NavyMCNavyOS Air Force84Air Forc
6、e99DLAGS42. Referenced Documents2.1 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 Z
7、1.4 Sampling Procedures and 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 St
8、orageMIL-STD-130 Identification 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 SteelsSAE AMS 66 Steel: Chemical Composition and Hardenabil-itySAE AMS 6440 Specification for Steel Bars
9、, Forging andTubingSAE AMS 6444 Specification 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
10、 F34 on RollingElement Bearings and is 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
11、 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 referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM
12、Standards volume information, refer to the standards 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.6Ava
13、ilable from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.7Available on the DODs ASSIST internet site located at: http:/assist.daps.dla.mil/online/start/.8Available from SAE International (SAE), 400 Commo
14、nwealth Dr., Warrendale,PA 15096-0001, http:/aerospace.sae.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Ordering Information4.1 When ordering parts in accordance with thisspecification, specify the following:4.1.1 ASTM desig
15、nation number, including year of issue,4.1.2 Dash number (see Table 1),4.1.3 Dimensions of roller, 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
16、. Materials and Manufacture5.1 RollersRollers shall be manufactured of chrome alloysteel E50100, E51100, 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 witho
17、ut 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 specif
18、iedin the contract or purchase order. The needle roller manufac-turer shall determine conformance of materials on a periodicbasis. These tests may be performed by the manufacturersinternal laboratory or by a laboratory external to the manufac-turer. X-ray energy spectrometry, or comparable technolog
19、y,may be used for the chemical identification and analysis of thematerials.6. Other Requirements6.1 Heat Treatment:6.1.1 Rollers 0.125 in. (3.18 mm) and Smaller Diameter,shall be through hardened to Rockwell HRA 81.2-83.4, inaccordance with Test Methods E18.6.1.2 Rollers Larger than 0.125 in (3.18 m
20、m) Diameter,shall be through hardened to Rockwell HRC 60 to 64 inaccordance with Test Methods E18.NOTE 1Hardness tests can be made using various techniques;however, in the case of disputes, a hardness test made on flats of sufficientwidth to give a true reading will be considered to be the definitiv
21、e value.6.2 Protective Coating:6.2.1 Manufacturer shall put rollers in rust-preventativepackaging or coat rollers with rust-preventive film.6.2.2 A material certification for the rust preventative shallbe available for review by the purchaser. The needle rollermanufacturer shall determine conformanc
22、e of the rust preven-tative material(s) on a periodic basis. If the purchaser maintainsa list of approved rust preventatives, and if the rust preventa-tive supplied by the needle roller manufacturer is on theapproved list, then the requirement for periodic testing of therust preventative would be el
23、iminated. For example, periodictesting would not be required if parts supplied to the Depart-ment of Defense were protected with a rust preventative listedin a current QPL (Qualified Products List).7. Dimensions and Permissible Variations7.1 Dimensioning and tolerancing shall conform to ASMEY14.5M.7
24、.2 Products manufactured in accordance with this specifi-cation shall meet the requirements shown in Table 1.7.2.1 Roller Diameter, DwPerfect form at MMC (maxi-mum material condition) is not required.7.2.2 The reference end form radius, Rw, is approximatelyequal to the roller diameter, Dw.7.2.3 The
25、effective length, Lwe, is only to be used forcalculating capacities.TABLE 1 Needle Roller with Spherical Ends DimensionsMS Part No. DwRollerDiameterLwRollerLengthLweEffectiveLength+0.00000.0002in.+0.0000.020in. in.MS 19065-1 0.0312 0.190 0.182MS 19065-2 0.0312 0.250 0.242MS 19065-3 0.0312 0.310 0.30
26、2MS 19065-4 0.0469 0.250 0.238MS 19065-5 0.0469 0.310 0.298MS 19065-6 0.0469 0.380 0.368MS 19065-7 0.0469 0.440 0.428MS 19065-8 0.0625 0.380 0.354MS 19065-9 0.0625 0.440 0.424MS 19065-10 0.0625 0.500 0.484MS 19065-11 0.0625 0.560 0.544MS 19065-12 0.0625 0.620 0.604MS 19065-13 0.0781 0.440 0.421MS 19
27、065-14 0.0781 0.500 0.481MS 19065-15 0.0781 0.560 0.541MS 19065-16 0.0781 0.620 0.601MS 19065-17 0.0781 0.690 0.671MS 19065-18 0.0781 0.750 0.731MS 19065-19 0.0938 0.560 0.537MS 19065-20 0.0938 0.620 0.597MS 19065-21 0.0938 0.690 0.667MS 19065-22 0.0938 0.750 0.727MS 19065-23 0.0938 0.810 0.787MS 19
28、065-24 0.0938 0.880 0.857MS 19065-25 0.1094 0.620 0.593MS 19065-26 0.1094 0.750 0.723MS 19065-27 0.1094 0.880 0.853MS 19065-28 0.1094 1.000 0.973MS 19065-29 0.1250 0.750 0.719MS 19065-30 0.1250 0.880 0.849MS 19065-31 0.1250 1.000 0.969MS 19065-32 0.1250 1.120 1.089MS 19065-33 0.1250 1.250 1.219MS 19
29、065-34 0.1562 1.000 0.961MS 19065-35 0.1562 1.250 1.211MS 19065-36 0.1562 1.500 1.461MS 19065-37 0.1875 1.000 0.953MS 19065-38 0.1875 1.250 1.203MS 19065-39 0.1875 1.500 1.453MS 19065-40 0.2188 1.000 0.945MS 19065-41 0.2188 1.250 1.195MS 19065-42 0.2188 1.500 1.445MS 19065-43 0.2500 0.500 0.437MS 19
30、065-44 0.2500 0.750 0.687MS 19065-45 0.2500 1.000 0.937MS 19065-46 0.2500 1.250 1.187MS 19065-47 0.2500 1.500 1.437MS 19065-48 0.2500 1.750 1.687F2443 04 (2012)27.3 Rollers are intended to be used in complements wherethey are installed in housings and used with shafts to functionas a rolling bearing
31、.8. Workmanship, Finish, and Appearance8.1 WorkmanshipCylindrical surfaces of the roller shall befree from scratches, pits, rust, indications of soft spots, andother surface imperfections.8.2 Surface FinishThe effective roller surface shall have amaximum surface roughness, in accordance with ANSI B4
32、6.1,of 8 in. Ra (0.20 m Ra).9. Inspection9.1 Inspection of the product shall be agreed upon betweenthe purchaser and the supplier as part of the purchase contract.9.1.1 Sampling inspection shall be done in accordance withANSI/ASQC Z1.4 or Table 2. The unit product for samplingpurposes shall be one r
33、oller as applicable.9.2 Quality conformance inspection shall be conducted inaccordance with Table 1 and Table 3 on each production lot ofrollers.10. Rejection and Rehearing10.1 Products that fail to conform to the requirements of thisspecification may be rejected. Rejection should be reported tothe
34、producer or supplier promptly and in writing. In case ofdissatisfaction with the results of the test, the producer orsupplier may make claim for rehearing.11. Certification11.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification that samples repre-senting
35、each lot have been either tested or inspected as directedin this specification and the requirements have been met. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.12. Product Marking12.1 Marking individual rollers is not practical and wouldadversely af
36、fect their performance; therefore, any identificationmarkings shall appear on the packaging that contains therollers. Marking shall consist of the part number and themanufacturers identification in accordance with MIL-STD-130 and MIL-STD-129.12.1.1 The part number shall consist of the MS19065designa
37、tion plus the dash number (see Table 1), for example,MS19065-8.13. Packaging and Package Marking13.1 Unless otherwise specified in the contract or purchaseorder, military procurements shall be packaged and preservedin accordance with MIL-DTL-197. Level of packaging andpreservation method shall be as
38、 specified in the contract orpurchase order.14. Keywords14.1 needle roller; roller; roller bearing; spherical endFIG. 1 Schematic DrawingNeedle Roller with Spherical EndTABLE 2 Sampling Plan for Quality Conformance TestsSample SizeA indicates the entire lot must be inspectedLot Size MajorCharacteris
39、ticsMinorCharacteristics1to2 A A3to8 A 39to12 A 313 to 15 13 316 to 25 13 326 to 50 13 551 to 90 13 691 to 150 13 7151 to 280 20 10281 to 500 29 11501 to 1200 34 151201 to 1249 42 181250 to 3200 42 183201 to 10 000 50 22F2443 04 (2012)3APPENDIX(Nonmandatory Information)X1. RECOMMENDED LOAD-LIFE DATA
40、X1.1 The rating life, L10, of a group of apparently identicalroller bearings is the life in millions of revolutions that 90 % ofthe group will complete or exceed. For a single bearing(complement of rollers), L10also refers to the life associatedwith 90 % reliability.X1.1.1 As presently determined, t
41、he life that 50 % of thegroup of roller bearings will complete or exceed (median life,L50) is usually not greater than five times the rating life.X1.2 The basic load rating, C, for a radial rolling bearing isthat calculated, constant, radial load that a group of apparentlyidentical bearings with sta
42、tionary outer raceway can theoreti-cally endure for a rating life of one million revolutions of itsinner raceway.X1.2.1 The basic load rating is a reference value only, thebase value of one million revolutions rating life having beenchosen for ease of calculation.X1.2.2 Since applied loading as grea
43、t as the basic loadrating tends to cause local plastic deformation of the rollingsurfaces, it is not anticipated that such heavy loading would beapplied.X1.3 The basic load rating formula is intended as a guide inselecting the proper roller complement. The specific basic loadrating for a group of ne
44、edle rollers assembled in a fullcomplement (cageless) needle roller bearing can be calculatedby the following basic load rating equation:C 5 c3 Z3/43 Lwe7/93 Dw29/27(X1.1)where:C = basic dynamic radial load rating (lbs),c= a factor which depends on the units used, the geom-etry of the load carrying
45、surfaces, the accuracy of thecomponents, and the materials used,Z = number of needle rollers,Lwe= roller effective length (in.), andDw= roller diameter (in.)X1.3.1 Values for cZ3/4are given in Table X1.1.X1.4 The allowable bearing load for a given bearing speedand a required rating life can be calcu
46、lated by using thefollowing bearing load and life relationship formula:allowable load lbs! 5 C 3 SF! /LFat the given conditions! (X1.2)TABLE 3 Quality ConformanceExamination or Test MajorCharacteristicMinorCharacteristicRequirementParagraphTestParagraphDimensionsRoller diameter, DwX Fig. 1 Table 1Ro
47、ller length, LwX Fig. 1 Table 1Effective length, LweX Fig. 1 Table 1End form radius, RwX Fig. 1 Table 1Certification X 11.1Surface finish X 8.2 ANSI B46.1Workmanship X 8.1Marking X 12.1Hardness X 6.1.1, 6.1.2 Test Methods E18Lubrication/protectivecoatingX 6.2Materials X 5.3TABLE X1.1 Values for ,cZ3
48、/4Numberof Rollers,cZ3/4in in-lbs unitsNumberof Rollers,cZ3/4in in-lbs units6 15 400 34 77 0007 19 800 35 78 3008 23 700 36 79 6009 27 300 37 80 90010 30 700 38 82 20011 33 700 39 83 50012 36 700 40 84 70013 39 300 41 85 80014 41 800 42 86 90015 44 300 43 88 00016 46 700 44 89 10017 48 900 45 90 200
49、18 51 100 46 91 30019 53 200 47 92 40020 55 200 48 93 50021 57 100 49 94 60022 58 900 50 95 70023 60 700 51 96 80024 62 300 52 97 90025 63 900 53 99 00026 65 500 54 100 00027 67 100 55 101 10028 68 600 56 102 10029 70 100 57 103 20030 71 600 58 104 30031 73 000 59 105 40032 74 400 60 106 40033 75 700F2443 04 (2012)4where:C = basic dynamic radial load rating (lbs),LF = life factor, which can be calculated with the followingformula:LF 5 life in h/500 !3/10, and (X1.3)SF = speed factor, which can be calculated with the follow-ing
