1、Designation: F2246 06 (Reapproved 2013)Standard Specification forBearing, Roller, Needle: Thick Outer Ring With Rollers andCage1This standard is issued under the fixed designation F2246; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisi
2、on, 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 specification co
3、vers needle roller bearings havingthick outer rings, with rollers and cages.1.2 The bearings being specified are intended to be usedwith hardened shafts (HRC58-65; see Test Methods E18). Foruse with unhardened shafts, bearings should be used inconjunction with inner bearing ring MS51962 as specified
4、 inSpecification F2431 and shown as MS500072 bearing assem-blies in Specification F2430.1.3 The use of recycled materials that meet the requirementsof the applicable material specification without jeopardizingthe intended use of the item is encouraged.1.4 Bearings designed to this specification are
5、intended foruse in applications requiring high radial load with minimalangular shaft misalignment.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 conside
6、red standard.NOTE 1This specification contains many of the requirements ofMS51961 which was originally developed by the Department of Defenseand maintained by the Defense Supply Center Richmond.2. Referenced Documents2.1 ASTM Standards:2E18 Test Methods for Rockwell Hardness of Metallic Ma-terialsF2
7、430 Specification for Bearing, Roller, Needle: Assembly(Thick Outer Race)F2431 Specification for Ring Bearing, Inner: For NeedleRoller Bearing with Thick Outer Ring2.2 ANSI Standard:3ANSI B46.1 Surface Texture (Surface Roughness, Waviness,and Lay)2.3 SAE Standards:4SAE J-404 Chemical Compositions of
8、 SAE Alloy SteelsSAE AMS-STD-66 Steel: Chemical Composition and Hard-enability2.4 Military Standards:5MIL-STD-130 Identification Marking of U.S. Military Prop-ertyMS500072 Bearing, Roller, Needle: Assembly (Thick OuterRace)MS51962 Ring Bearing, Inner: For Needle Roller Bearingwith Thick Outer Ring2.
9、5 American Bearing Manufacturers Association Stan-dard:6ABMA 18.1 Needle Roller Bearings Radial, Inch Design2.6 International Organization for Standardization Stan-dards:7ISO 492 Rolling BearingsRadial BearingsTolerancesISO 3096 Rolling BearingsNeedle RollersDimensionsand TolerancesISO 5593 Rolling
10、BearingsVocabulary3. Terminology3.1 DefinitionsFor definitions of terms used in thisspecification, refer to ISO 5593, Rolling BearingsVocabulary.3.2 Definitions of Terms Specific to This Standard:1This specification is under the jurisdiction ofASTM Committee F34 on RollingElement Bearings and is the
11、 direct responsibility of Subcommittee F34.04 onAutomotive/Industrial Bearing.Current edition approved May 1, 2013. Published May 2013. Originallyapproved in 2003. Last previous edition approved in 2007 as F2246 061. DOI:10.1520/F2246-06R13.2For referenced ASTM standards, visit the ASTM website, www
12、.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.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.4Available fr
13、om Society of Automotive Engineers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001.5Available on the DoDs ASSIST internet site located at: http:/assist.daps.dla.mil/online/start/.6Available from Techstreet, 1327 Jones Drive, Ann Arbor, MI 48105.7Available from ANSI Washington, D.C. Headquarter
14、s, 1819 L Street, NW, 6thFloor, Washington, DC, 20036Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.1 average life (L50)for a radial roller bearing, thenumber of revolutions that 50 % of a group of bearings willcomplete or exceed
15、 before the first evidence of fatigue devel-ops.3.2.1.1 DiscussionThe average life is approximately fivetimes the rating life.3.2.2 basic dynamic load rating (Cr) for a radial rollerbearing, that calculated, constant radial load that a group ofapparently identical bearings with stationary outer ring
16、s cantheoretically endure for a rating life of one million revolutionsof the inner ring.3.2.2.1 DiscussionSince applied loading as great as thebasic dynamic load rating tends to cause local plastic defor-mation of the rolling surfaces, it is not anticipated that suchheavy loading would normally be a
17、pplied.3.2.3 basic static load rating (Cor) for a radial rollerbearing, that uniformly distributed static radial load whichproduces a maximum contact stress at the center of the mostheavily loaded rolling element contact of 580 000 psi (4000Mpa).3.2.3.1 DiscussionFor this contact stress, a total per
18、ma-nent deformation of roller element plus raceway occurs, whichis approximately 0.0001 of the roller diameter.3.2.4 rating life (L10)for a radial roller bearing, thenumber of revolutions that 90 % of a group of bearings willcomplete or exceed before the first evidence of fatigue devel-ops.4. Orderi
19、ng Information4.1 When ordering parts in accordance with thisspecification, 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 roller bearings, including:4.1.3.1 Bore diameter, in. (mm),4.1.3.2 Outside diameter, in. (mm),4
20、.1.3.3 Width, in. (mm), and4.1.3.4 Radius, in. (mm),4.1.4 Load rating, including basic static load rating, lb (N)and basic dynamic load rating, lb (N), and4.1.5 Approximate limiting speed, rpm.5. Materials and Manufacture5.1 RollersRollers shall be manufactured of steel, alloy,grade E50100, E51100 o
21、r E52100 in accordance with SAEAMS-STD-66 or SAE J-404.5.2 RingsRings shall be manufactured of steel, alloy orcarbon, carburizing grade 4620, 4720, 8620, 8720, or 1010-1020 in accordance with SAE AMS-STD-66 or SAE 51100 orSAE 52100 in accordance with SAE J-404.5.3 CagesCages shall be manufactured of
22、 steel, brass, orbronze, or other material in accordance with manufacturersstandards.6. Other Requirements6.1 Heat Treatment:6.1.1 RollersRollers shall be through hardened to Rock-well HRC58-66 in accordance with Test Methods E18.6.1.2 Rings:6.1.2.1 Steel 4620, 4720, 8620, 8720, and 1010-1020 shallb
23、e case hardened to Rockwell HRC58-65, in accordance withTest Methods E18. Case depth shall be 0.025 in. (0.64 mm)minimum.6.1.2.2 Steel SAE 51100 and SAE 52100 shall be throughhardened to Rockwell HRC58-65, in accordance with TestMethods E18.6.2 Protective Coating:6.2.1 Bearings shall be furnished wi
24、thout plating.6.2.2 Manufacturer shall coat bearings with rust preventivefilm.6.3 LubricationBearings shall be furnished without lubri-cation.7. Dimensions, Mass, and Permissible Variations7.1 Products manufactured in accordance with this specifi-cation shall meet the requirements shown in Table 1.7
25、.2 Bearings are intended to be installed on shafts wheremaximum taper does not exceed 0.0005 in. per inch (0.0005mm per mm) of bearing width.7.3 Bearing bore should be checked using a “go” plug gagethat is 0.0001 in. (0.0025 mm) less than the minimum diameterunder the needle rollers column of Table
26、1, and “no go” pluggage that is 0.0001 in. (0.0025 mm) larger than the maximumdiameter under the needle rollers column of Table 1. The “nogo” gage may enter 25 % of the roller length.7.4 One end of the bearing must clear the maximum housingfillet radius shown in the radius column of Table 1.Aminimum
27、chamfer of132 in. (0.79 mm) on the opposite end may be usedin lieu of radius clearance. When ends are not identical, themarking (see Section 13) shall be applied to the end with thelargest surface.FIG. 1 Schematic DrawingRoller BearingF2246 06 (2013)2TABLE 1 Roller Bearing DimensionsDashNumberFwBore
28、 Diameter, in.DOutside Diameter, in.CWidth, in.,+0.000, -0.005Radius,in. (see 7.4)Basic StaticLoad Rating, lbBasic DynamicLoad Rating, lbApprox. LimitingSpeed, rpmNom. Min. Max. Nom. Min. Max.-158 0.6258 0.6267 118 1.1245 1.1250 0.750 0.025 2520 2980 30200-234 0.7509 0.7518 114 1.2495 1.2500 0.750 0
29、.040 2540 3180 24600-334 0.7509 0.7518 114 1.2495 1.2500 1.000 0.040 4120 4350 24600-41516 0.8131 0.8143 1516 1.3120 1.3125 0.750 0.040 2680 3210 22600-578 0.8759 0.8768 138 1.3745 1.3750 0.750 0.040 3210 3540 20700-678 0.8759 0.8768 138 1.3745 1.3750 1.000 0.040 4810 4860 20700-71516 0.9384 0.9393
30、1716 1.4370 1.4375 0.750 0.040 3280 3590 20000-8 1 1.0009 1.0018 112 1.4995 1.5000 0.750 0.040 3670 3830 19200-9 1 1.0009 1.0018 112 1.4995 1.5000 1.000 0.040 5500 5250 19200-10 1116 1.0634 1.0643 1916 1.5620 1.5625 1.000 0.040 5280 5130 17800-11 118 1.1259 1.1268 158 1.6245 1.6250 1.000 0.040 6190
31、5680 15700-12 118 1.1259 1.1268 158 1.6245 1.6250 1.250 0.040 8270 7120 15700-13 1316 1.1885 1.1894 11116 1.6870 1.6875 1.000 0.040 6150 5420 14600-14 114 1.2510 1.2519 134 1.7495 1.7500 1.000 0.040 6530 5870 14000-15 114 1.2510 1.2519 134 1.7495 1.7500 1.250 0.040 8730 7360 14000-16 1516 1.3135 1.3
32、144 11316 1.8120 1.8125 1.000 0.040 7050 6000 13300-17 1516 1.3135 1.3144 11316 1.8120 1.8125 1.250 0.040 9300 7530 13300-18 138 1.3760 1.3769 178 1.8745 1.8750 1.000 0.040 7220 6260 12600-19 138 1.3760 1.3769 178 1.8745 1.8750 1.250 0.040 9650 7840 12600-20 1716 1.4385 1.4394 11516 1.9370 1.9375 1.
33、000 0.060 7480 6200 12100-21 112 1.5010 1.5019 2116 2.0619 2.6025 1.000 0.060 8130 7360 11700-22 112 1.5010 1.5019 2116 2.0619 2.0625 1.250 0.060 10900 9270 11700-23 1916 1.5635 1.5644 218 2.1244 2.1250 1.250 0.060 11000 8250 11200-24 158 1.6260 1.6269 2316 2.1869 2.1875 1.000 0.060 8530 7360 10700-
34、25 158 1.6260 1.6269 2316 2.1869 2.1875 1.250 0.060 11500 9520 10700-26 11116 1.6885 1.6895 214 1.2494 2.2500 1.250 0.060 11600 9040 10000-27 134 1.7510 1.7520 2516 2.3119 2.3125 1.000 0.060 8940 7760 9850-28 134 1.7510 1.7520 2516 2.3119 2.3125 1.250 0.060 12000 9780 9850-29 178 1.8760 1.8770 2716
35、2.4369 2.4375 1.250 0.060 13102 10400 9150-30 2 2.0011 2.0021 2916 2.5619 2.5625 1.250 0.060 13700 10600 8350-31 214 2.2511 2.2521 3 2.9994 3.0000 1.500 0.060 19100 14700 7600-32 214 2.2511 2.2521 3 2.9994 3.0000 1.750 0.060 23200 17100 7600-33 212 2.5011 2.5021 314 3.2494 3.2500 1.500 0.080 21600 1
36、3800 6800-34 212 2.5011 2.5021 314 3.2494 3.2500 1.750 0.080 26200 16400 6800-35 234 2.7511 2.7521 312 3.4992 3.5000 1.500 0.080 23300 16500 6150-36 234 2.7511 2.7521 312 3.4992 3.5000 1.730 0.080 28200 19200 6150-37 3 3.0011 3.0023 334 3.7492 3.7500 1.500 0.080 25800 17600 5600-38 3 3.0011 3.0023 3
37、34 3.7492 3.7500 1.750 0.080 31200 20400 5600-39 314 3.2512 3.2524 414 4.2492 4.2500 1.750 0.080 35700 26600 5250-40 314 3.2512 3.2524 414 4.2492 4.2500 2.000 0.080 42100 30200 5250-41 312 3.5012 3.5024 412 4.4992 4.5000 1.750 0.080 32200 21300 4350-42 312 3.5012 3.5024 412 4.4992 4.5000 2.000 0.080
38、 43800 30700 4850-43 334 3.7512 3.7524 434 4.7492 4.7500 2.000 0.100 47000 32400 4500-44 4 4.0012 4.0024 5 4.9990 5.0000 1.750 0.100 36200 22500 4200-45 4 4.0012 4.0024 5 4.9990 5.0000 2.000 0.100 30400 33800 4200-46 414 4.2512 4.2526 514 5.2490 5.2500 2.000 0.100 52200 34200 3950-47 412 4.5012 4.50
39、26 6 5.9990 6.0000 2.000 0.100 43600 30900 3850-48 412 4.5012 4.5026 6 5.9990 6.0000 2.250 0.100 62800 47900 3850-49 412 4.5012 4.5026 6 5.9990 6.0000 2.500 0.100 72700 53300 3850-50 5 5.0013 5.0027 612 6.4990 6.5000 2.000 0.100 60800 46100 3400-51 5 5.0013 5.0027 612 6.4990 6.5000 2.500 0.100 70900
40、 52000 3400-52 512 5.5013 5.5027 7 6.9990 7.0000 2.500 0.100 84200 58000 3100-53 512 5.5013 5.5027 7 6.9990 7.0000 3.000 0.100 105000 69100 3100-54 534 5.7313 5.7327 714 7.2490 7.2500 3.000 0.120 109000 70600 2950-55 6 6.0013 6.0027 712 7.4988 7.5000 2.500 0.120 93200 61900 2800-56 6 6.0013 6.0027 7
41、12 7.4988 7.5000 3.000 0.120 116000 73800 2800-57 612 6.5013 6.5029 8 7.9988 8.0000 2.500 0.120 99000 63900 2600-58 612 6.5013 6.5029 8 7.9988 8.0000 3.000 0.120 124000 76300 2600-59 714 7.2514 7.2530 918 9.1238 9.1250 3.000 0.120 134000 88600 2300F2246 06 (2013)37.5 The needle roller diameter varia
42、tion in each bearingshall fall within the limitations prescribed within ISO 3096 forGrade 5.7.6 The run-out for each bearing outside diameter andraceway inside diameter shall be within the limitations pre-scribed in ISO 492 for the Normal Class.7.7 Oil grooves and between one and four oil holes shal
43、l beincluded in accordance with manufacturers standard practice.8. Workmanship, Finish, and Appearance8.1 Surface Finish:8.1.1 Needle RollersNeedle rollers shall have a maximumsurface roughness, in accordance with ANSI B46.1, of 8 in.Ra(0.20 m Ra).8.1.2 RingsThe raceway surface (bore) of the outer r
44、ingshall have a maximum surface roughness, in accordance withANSI B46.1, of 20 in. Ra(0.51 m Ra).9. Rating Life of Roller Bearing9.1 Use the following equation to calculate rating life ofroller bearing, L10, in millions of revolutions, at loads otherthan the basic dynamic load ratings:L105 Cr/P#10/3
45、(1)where:L10= Rating life, 106revolutions,Cr= basic dynamic load rating, lb (N), andP = equivalent radial load to which bearing is subjected, lb(N).9.1.1 The rating life of roller bearings as calculated in Eq 1are assumed to be operating under the following conditions:9.1.1.1 The inner ring is rotat
46、ing,9.1.1.2 The outer ring is stationary,9.1.1.3 The load is steady,9.1.1.4 The revolutions per minute are uniform,9.1.1.5 The roller bearing is thoroughly lubricated,9.1.1.6 The maximum bearing temperature does not exceed300F (149C), and9.1.1.7 Any shaft misalignment does not exceed 0.0005 in.per i
47、nch (0.0005 mm per mm) of bearing width.9.1.2 Eq 1 is not valid for an applied load greater thanone-half the basic dynamic load rating.10. Inspection10.1 Inspection of the product shall be agreed upon betweenthe purchaser and the supplier as part of the purchase contract.11. Rejection and Rehearing1
48、1.1 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 for rehearing.12. Certification1
49、2.1 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 purchase order or contract, a report of the testresults shall be furnished.13. Product Marking13.1 Marking shall consist of the part number and themanufacturers identification in accordance w
