1、Designation: F2431 04 (Reapproved 2012)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 r
2、evision, 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 Department of Defense.1. Scope1.1 This specificati
3、on covers 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-f
4、ication F2162, 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 standar
5、d. The values 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 Defens
6、e Supply Center inRichmond. The following government activity codes may befound in the Department of Defense, Standardization DirectorySD-1.2Preparing activity Custodians Review ActivityDLAGS4 Army AT Air Force84NavyOSAir Force-992. Referenced Documents2.1 ASTM Standards:3E18 Test Methods for Rockwe
7、ll 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, Rolle
8、r, Needle: ThickOuter Ring With Rollers and Cage2.2 ANSI Standard:4ASME B46.1 Surface Texture (Surface Roughness,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 Identi
9、fication Marking of U.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 Design2.6 ISO Standard:4ISO 5593 Rolling Bear
10、ingsVocabulary1This specification is under the jurisdiction ofASTM Committee F34 on RollingElement Bearings and is the direct responsibility of Subcommittee Automotive/Industrial Bearing.Current edition approved Dec. 1, 2012. Published January 2013. Originallyapproved in 2004. Last previous edition
11、approved in 2004 as F243104. DOI:10.1520/F2431-04R12.2The 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 referenced ASTM standards, visit the ASTM website, www.astm
12、.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 St.,4th Floor, New York, NY 10036, http:/www.ansi.or
13、g.5Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,PA 15096-0001, http:/www.sae.org.6Available on the DODs ASSIST website, http:/assist.daps.dla.mil/online/start/.7Available from Techstreet, 3916 Ranchero Drive, Ann Arbor, MI, 48108,http:/.Copyright ASTM International, 100 B
14、arr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 DefinitionsFor definitions of terms used in thisspecification, refer to ABMA STD 4 and ISO 5593.4. Ordering Information4.1 When ordering parts in accordance with thisspecification, specify the following:
15、TABLE 1 Inner Ring DimensionsDashNumberdBore Diameter,in.FOutside Diameter,in.BWidth,in.+0.000,-0.005rRadius,in.(see7.3)MatingBearingMS51961Dash Number(seeSpecificationF2246)Nom. Min. Max. Nom. Min. Max.-138 0.3746 0.375058 0.6241 0.6245 0.760 0.025 -1-212 0.4996 0.500034 0.7488 0.7493 0.760 0.040 -
16、2-312 0.4996 0.500034 0.7488 0.7493 1.010 0.040 -3-458 0.6246 0.625078 0.8738 0.8743 0.760 0.040 -5-534 0.7496 0.7500 1 0.9988 0.9993 0.760 0.040 -8-61316 0.8120 0.8125 1 0.9988 0.9993 0.760 0.040 -8-71316 0.8120 0.8125 1 0.9988 0.9993 1.010 0.040 -9-878 0.8745 0.8750 118 1.1236 1.1241 1.010 0.040 -
17、11-91516 0.9370 0.9375 118 1.1236 1.1241 1.010 0.040 -11-10 1 0.9995 1.0000 114 1.2485 1.2491 1.010 0.040 -14-11 1 0.9995 1.0000 114 1.2485 1.2491 1.260 0.040 -15-12 118 1.1245 1.1250 138 1.3735 1.3741 1.010 0.040 -18-13 118 1.1245 1.1250 138 1.3735 1.3741 1.260 0.040 -19-14 1316 1.1870 1.1875 112 1
18、.4984 1.4990 1.260 0.060 -22-15 114 1.2495 1.2500 112 1.4984 1.4990 1.010 0.060 -21-16 114 1.2495 1.2500 112 1.4984 1.4990 1.260 0.060 -22-17 1516 1.3210 1.3125 158 1.6234 1.6240 1.010 0.060 -24-18 138 1.3745 1.3750 158 1.6234 1.6240 1.260 0.060 -25-19 138 1.3745 1.3750 134 1.7484 1.7490 1.260 0.060
19、 -28-20 1716 1.4370 1.4375 134 1.7484 1.7490 1.260 0.060 -28-21 112 1.4995 1.5000 134 1.7484 1.7490 1.010 0.060 -27-22 112 1.4995 1.5000 134 1.7484 1.7490 1.260 0.060 -28-23 158 1.6245 1.6250 2 1.9982 1.9989 1.260 0.060 -30-24 134 1.7495 1.7500 214 2.2482 2.2489 1.510 0.060 -31-25 134 1.7495 1.7500
20、214 2.2482 2.2489 1.510 0.060 -32-26 11516 1.9370 1.9375 212 2.4982 2.4989 1.760 0.080 -34-27 2 1.9995 2.0000 212 2.4982 2.4989 1.510 0.080 -33-28 2316 2.1869 2.1875 234 2.7482 2.7489 1.760 0.080 -36-29 214 2.2494 2.2500 234 2.7482 2.7489 1.510 0.080 -35-30 238 2.3744 2.3750 3 2.9982 2.9989 1.760 0.
21、080 -38-31 212 2.4994 2.5000 3 2.9982 2.9989 1.510 0.080 -37-32 234 2.7494 2.7500 314 3.2478 3.2487 1.760 0.080 -39-33 234 2.7494 2.7500 314 3.2478 3.2487 2.010 0.080 -40-34 21516 2.9369 2.9375 312 3.4978 3.4987 2.010 0.080 -42-35 318 3.1244 3.1250 334 3.7478 3.7487 2.010 0.100 -43-36 314 3.2494 3.2
22、500 334 3.7478 3.7487 2.010 0.100 -43-37 314 3.2494 3.2500 4 3.9976 3.9985 2.010 0.100 -45-38 338 3.3742 3.3750 4 3.9976 3.9985 2.010 0.100 -45-39 312 3.4992 3.5000 414 4.2476 4.2485 2.010 0.100 -46-40 334 3.7492 3.7500 414 4.2476 4.2485 2.010 0.100 -46-41 334 3.7492 3.7500 412 4.4976 4.4985 2.510 0
23、.100 -49-42 4 3.9992 4.0000 5 4.9975 4.9985 2.510 0.100 -51-43 412 4.4992 4.5000 512 5.4975 5.4985 2.515 0.100 -52-44 412 4.4992 4.5000 512 5.4975 5.4985 3.015 0.100 -53-45 434 4.7492 4.7500 534 5.7473 5.7483 3.015 0.120 -54-46 5 4.9990 5.0000 6 5.9973 5.9983 2.515 0.120 -55-47 5 4.9990 5.0000 6 5.9
24、973 5.9983 3.015 0.120 -56-48 512 5.4990 5.5000 612 6.4973 6.4983 2.515 0.120 -57-49 512 5.4990 5.5000 612 6.4973 6.4983 3.015 01.20 -58-50 6 5.9990 6.0000 714 7.2469 7.2481 3.015 0.120 -59F2431 04 (2012)24.1.1 ASTM designation number, including year of issue,4.1.2 Dash number (see Table 1),4.1.3 Di
25、mensions of inner ring, including:4.1.3.1 Bore diameter, in. (mm),4.1.3.2 Outside diameter, in. (mm),4.1.3.3 Width, in. (mm), and4.1.3.4 Radius, in. (mm),4.1.4 Level of packaging and preservation (for Militaryprocurements).5. Materials and Manufacture5.1 Inner RingRings shall be manufactured of stee
26、l, alloyor carbon, carburizing grade 4620, 4720, 8620, 8720, or 1018to 1022 or 1117; or SAE E51100, SAE E52100, in accordancewith SAE AMS STD 66 or SAE 51100 or SAE J404.5.2 The use of recycled materials that meet the requirementsof the applicable material specification without jeopardizingthe inten
27、ded use of the item is encouraged.6. Other Requirements6.1 Heat Treatment:6.1.1 Rings:6.1.1.1 Steel 4620, 4720, 8620, 8720, and 1018 to 1022 or1117 shall be case hardened to Rockwell HRC 5865, inaccordance with Test Methods E18. Case depth shall be 0.025in. (0.64 mm) minimum.6.1.1.2 Steel SAE E51100
28、 and SAE 52100 shall be throughhardened to Rockwell HRC 58-65, in accordance with TestMethods E18.6.2 Protective Coating:6.2.1 Unless otherwise specified, inner rings shall be fur-nished without plating.6.2.2 Manufacturer shall coat bearings with rust preventivefilm.7. Dimensions and Permissible Var
29、iations7.1 Products manufactured in accordance with this specifi-cation shall meet the requirements shown in Table 1.7.1.1 Given the shaft diameter and radial load for a particu-lar bearing application, the bore diameter of the inner ring isselected from the shaft size. The outside diameters and wid
30、thare chosen by dimensionally mating the inner ring with thebearing from Specification F2246 that exhibits the requiredload capacity.7.2 Rings are intended to be installed on shafts wheremaximum taper does not exceed 0.0005 in./in. (0.0005 mm/mm) of bearing width.7.3 Ring must clear the maximum shaf
31、t fillet radius shownin the radius column of Table 1. The radii or chamfers on theinner diameter of the ring may be unequal. Where the radii areunequal, the surface with the larger relief should be mountedagainst the shaft shoulder. In rings where the inside diameterrelief radii are not equal, the m
32、arking shall appear on thesurface with the lesser radius.7.4 Rings shall contain between one and four oil holes, sizeand number shall be in accordance with manufacturers stan-dard practice.7.5 Oil groove optional in accordance with manufacturersstandard practice8. Workmanship, Finish, and Appearance
33、8.1 Surface Finish:8.1.1 RingsThe raceway surface (O.D.) of the inner ringshall have a maximum surface roughness, in accordance withANSI B46.1, of 20 in. Ra (0.51 m Ra).9. Inspection9.1 Inspection of the product shall be agreed upon betweenthe purchaser and the supplier as part of the purchase contr
34、act.10. Rejection and Rehearing10.1 Products that fail to conform to the requirements of thisspecification may be rejected. Rejection should be reported tothe producer or supplier promptly and in writing. In case ofdissatisfaction with the results of the test, the producer orsupplier may make claim
35、for rehearing.11. Certification11.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification that samples repre-senting each lot have been either tested or inspected as directedin this specification and the requirements have been met. Whenspecified in the purch
36、ase order or contract, a report of the testresults shall be furnished.12. Product Marking12.1 Marking shall consist of the part number and themanufacturers identification in accordance with MIL-STD-130.12.1.1 The part number shall consist of the MS51962designation plus the dash number (see Table 1).
37、 For example,MS51962-112.2 In rings where the inside diameter relief radii are notequal, the marking shall appear on the surface with the lesserradius.FIG. 1 Schematic DrawingInner RingF2431 04 (2012)313. Packaging13.1 Unless otherwise specified in the contract or purchaseorder, military procurement
38、s shall be packaged and preservedin accordance with MIL-DTL-197. Level of packaging andpreservation method shall be as specified in the contract orpurchase order.14. Keywords14.1 inner ring; MS51961; MS51962; needle roller; radialbearingASTM International takes no position respecting the validity of
39、 any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to
40、revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Y
41、our comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is co
42、pyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).F2431 04 (2012)4
