1、Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: STDZNMGTdla.mil or DLA Aviation VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616. Since contact information can change, you may want to verify the
2、 currency of this address information using the ASSIST database at https:/assist.daps.dla.mil/. FSC 3110 INCH-POUND A-A-59656B 8 September 2011 SUPERSEDING A-A-59656A 22 May 2006 COMMERCIAL ITEM DESCRIPTION BEARINGS, ROLLER, TAPERED, DOUBLE ROW, NORMAL ANGLE, TWO SINGLE CONES, ONE DOUBLE CUP, NONADJ
3、USTABLE (TYPE TNA) The General Services Administration has authorized the use of this commercial item description for all federal agencies. 1. SCOPE. This commercial item description (CID) covers government acquisition requirements for complete (cone with rollers and cup) double row, tapered, roller
4、 bearings with normal angle, two single cones, and one double cup, nonadjustable (type TNA) for general purpose use. These bearings are not intended for use in special precision applications such as on aircraft, precision ordnance, or submarine equipment. 2. CLASSIFICATION. The roller bearings shall
5、 be of one type (TNA) and classified by the size codes listed in table I. The column headings in table I refer to bearing characteristics defined in figure 1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59656B 2 FIGURE 1. Bearing characterist
6、ics. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. Size codes and dimensions. 1Part numbers are for reference only. Part numbers reflect the cup and cone numbers used by industry and the ABMA. Some cones and cups may be used in multiple co
7、nfigurations and are not limited to one bearing assembly. 2These maximum fillet radii shall be cleared by the bearing corners. 3Minus value indicates load center inside cone backface. 3 A-A-59656B Size code Part number 1d D T B R 2r 2d aD aK factor Basic dynamic load ratings (lb.) Bore Outside diame
8、ter Bearing width over cupsCone width Max. shaft fillet radius Max. housing fillet radius Recommended shoulder diameter Cone-cup Shaft Housing Two row radial 001 NA05075 - 05185D 0.7500 1.8504 0.9926 1.2500 0.05 0.03 1.00 1.67 1.64 7500 002 NA08125 - 08231D 1.2500 2.3125 0.9688 1.2812 0.06 0.02 1.52
9、 2.17 1.23 8900 003 NA13687 - 13621D 1.5000 2.7170 1.5000 1.8124 0.08 0.03 1.83 2.56 1.45 15400 004 NA438 - 432D 1.7500 3.7500 2.0000 2.4376 0.14 0.03 2.24 3.43 2.05 35200 005 NA366 - 363D 1.9685 3.5433 1.6563 1.9789 0.14 0.03 2.40 3.31 1.83 14000 006 NA3780 - 3729D 2.0000 3.6718 2.0625 2.5625 0.14
10、0.03 2.52 3.46 1.73 19700 007 NA455 - 452D 2.0000 4.2500 2.1250 2.5626 0.14 0.03 2.56 3.94 1.74 21800 008 NA539 - 533D 2.1250 4.3750 2.5000 3.1250 0.14 0.06 2.68 3.94 1.97 27600 009 NA385 - 384D 2.1654 3.9370 1.6875 2.0625 0.14 0.03 2.64 3.66 1.65 14800 010 NA558 - 552D 2.3750 4.8750 2.5000 3.1250 0
11、.14 0.06 2.99 4.53 1.69 30700 011 NA569 - 563D 2.6250 5.0000 2.5625 3.1875 0.14 0.06 3.23 4.69 1.61 50000 012 NA482 - 472D 2.7500 4.7244 2.1250 2.5626 0.14 0.03 3.27 4.49 1.52 23100 013 NA484 - 472D 2.7559 4.7244 2.1250 2.5626 0.14 0.03 3.27 4.49 1.52 23100 014 NA567 - 563D 2.8750 5.0000 2.5625 3.18
12、75 0.27 0.06 3.70 4.69 1.61 32000 015 NA495A - 493D 3.0000 5.3750 2.1250 2.7500 0.14 0.03 3.62 5.12 1.31 25000 016 NA659 - 654D 3.0000 6.0000 3.0000 3.7500 0.14 0.06 3.66 5.55 1.43 39600 017 NA580 - 572D 3.2500 5.5115 2.6250 3.2500 0.14 0.03 3.86 5.24 1.45 51100 018 NA749 - 742D 3.2500 6.1250 3.3750
13、 4.0000 0.14 0.06 3.90 5.63 1.80 50800 019 NA0593 - 592D 3.5000 6.0000 2.5000 3.2500 0.14 0.03 4.09 5.67 1.32 34800 020 NA759 - 752D 3.5000 6.3750 3.3750 4.1250 0.14 0.06 4.17 5.91 1.71 52300 021 NA52375 - 52637D 3.7500 6.3750 2.4375 3.2499 0.14 0.03 4.41 6.06 1.23 36100 022 NA0593 - 592D 3.7500 7.0
14、866 3.3750 4.1250 0.14 0.03 4.49 6.61 1.51 88200 023 NA776 - 774D 3.7500 7.1250 3.3750 4.1250 0.14 0.06 4.49 6.61 1.51 88200 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. Size codes and dimensions. 1Part numbers are for reference only. Par
15、t numbers reflect the cup and cone numbers used by industry and the ABMA. Some cones and cups may be used in multiple configurations and are not limited to one bearing assembly. 2These maximum fillet radii shall be cleared by the bearing corners. 3Minus value indicates load center inside cone backfa
16、ce. 4 A-A-59656B Size code Part 1number d D T B R 2r 2d aD aK factor Basic dynamic load ratings (lb.) Bore Outside diameter Bearing width over cups Cone width Max. shaft fillet radius Max. housing fillet radius Recommended shoulder diameter Cone-cup Shaft Housing Two row radial 024 NA691 - 672D 4.00
17、00 6.6250 2.7500 3.6250 0.14 0.03 4.65 6.30 1.24 68200 025 NA780 - 773D 4.0000 7.0866 3.3750 4.1250 0.14 0.03 4.69 6.61 1.51 88200 026 NA780 - 774D 4.0000 7.1250 3.3750 4.1250 0.14 0.06 4.69 6.61 1.51 88200 027 NA861 - 854D 4.0000 7.5000 4.0000 5.0000 0.14 0.06 4.72 6.85 1.74 125400 028 HH221449NA -
18、 HH221410D 4.0000 7.5000 4.1250 5.0000 0.14 0.06 4.80 7.05 1.74 85200 029 NA782 - 773D 4.1250 7.0866 3.3750 4.1250 0.14 0.03 4.80 6.61 1.51 88200 030 NA782 - 774D 4.1250 7.1250 3.3750 4.1250 0.14 0.06 4.80 6.61 1.51 88200 031 NA71450 - 71751D 4.5000 7.5000 3.1875 4.1875 0.14 0.06 5.20 7.13 1.40 5830
19、0 032 NA938 - 932D 4.5000 8.3750 4.6250 5.6250 0.14 0.06 5.28 7.60 1.79 142900 033 NA48291 - 48220D 5.0000 7.1875 2.8750 3.3750 0.14 0.03 5.55 6.93 1.91 43200 034 NA798 - 792D 5.0000 8.1250 3.2500 4.2500 0.14 0.03 5.71 7.80 1.27 97800 035 NA95500 - 95927D 5.0000 9.2500 4.5000 5.6250 0.14 0.06 5.87 8
20、.54 1.58 153000 036 NA48390 - 48320D 5.3750 7.5000 2.8750 3.3750 0.14 0.03 5.94 7.24 1.82 75000 037 NA81550 - 81963D 5.5000 9.6250 3.1250 4.2500 0.14 0.06 6.34 9.02 1.66 111200 038 NA48686 - 48620D 5.6250 7.8750 2.8750 3.6876 0.14 0.03 6.22 7.60 1.74 74600 039 NA82576 - 82951D 5.7500 9.5000 4.1875 5
21、.1875 0.14 0.06 6.54 8.90 1.32 82500 040 NA99600 - 99102D 6.0000 10.0000 4.3750 5.6250 0.14 0.06 6.85 9.37 1.43 156800 041 NA67787 - 67720D 6.8750 9.7500 3.3125 4.0625 0.14 0.03 7.56 9.45 1.33 66800 042 NA87700 - 87112D 7.0000 11.1250 3.1250 4.2500 0.14 0.06 7.87 10.50 1.45 119700 043 NA94700 - 9411
22、4D 7.0000 11.3750 4.3750 5.6250 0.22 0.06 7.99 10.71 1.25 173800 044 HM237545NA - HM237510D 7.0000 11.3750 4.3750 5.6250 0.22 0.06 7.95 10.68 1.83 211900 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. Size codes and dimensions. 1Part number
23、s are for reference only. Part numbers reflect the cup and cone numbers used by industry and the ABMA. Some cones and cups may be used in multiple configurations and are not limited to one bearing assembly. 2These maximum fillet radii shall be cleared by the bearing corners. 3Minus value indicates l
24、oad center inside cone backface. 5 A-A-59656B Size code Part number 1d D T B R 2r 2d aD aK factor Basic dynamic load ratings (lb.) Bore Outside diameter Bearing width over cupsCone width Max. shaft fillet radius Max. housing fillet radius Recommended shoulder diameter Cone-cup Shaft Housing Two row
25、radial 045 NA94700 - 94118D 7.0000 11.7500 4.3750 5.6250 0.22 0.06 7.99 10.71 1.25 173800 046 H239649NA - H239612D 7.3750 12.6250 5.4375 7.3125 0.22 0.06 8.43 11.73 1.83 303000 047 NA93800 - 93127D 8.0000 12.5000 4.3750 5.7500 0.22 0.06 9.06 11.81 1.12 200400 048 NA130902 - 131401D 9.0000 14.0000 4.
26、3750 5.7500 0.25 0.06 10.08 13.01 1.77 231800 049 NA170950 - 171451D 9.5000 14.5000 3.3750 4.7500 0.25 0.06 10.59 13.27 1.61 165300 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59656B 6 3. SALIENT CHARACTERISTICS 3.1 Dimensions. Bearing dimens
27、ions (and dynamic load ratings, see 3.4) shall conform to the requirements specified in table I for each of the bearing part numbers. The listed dimensions conform to the requirements specified in American Bearing Manufacturers Association (ABMA) Standard 19.2, “Tapered Roller Bearings - Radial Inch
28、 Design“. The bearing size shall be specified in the acquisition order (see 7.3(b). For any unlisted bearing size codes, the associated dimensional and dynamic load rating requirements should also be specified in the acquisition order. 3.2 Materials. 3.2.1 Cones (inner rings), cups (outer rings), an
29、d rollers. The bearing cones, cups, and rollers shall be made of case carburized or through-hardened steel produced in accordance with the ASTM International (ASTM) A295/A295M, “Standard Specification for High-Carbon Anti-Friction Bearing Steel“, or ASTM A534, “Standard Specification for Carburizing
30、 Steels for Anti-Friction Bearings“. The steel shall show a fine fracture grain size in accordance with ASTM E112, “Standard Test Methods for Determining Average Grain Size“. Material hardness shall be no less than Rockwell hardness number of 58 on Rockwell C scale (HRC) and no more than 64 HRC as d
31、efined in ASTM E18, “Standard Test Methods for Rockwell Hardness of Metallic Materials“. 3.2.2 Cage. The bearing cage material shall be impervious to deterioration from any lubricant, preservative, solvent, or other chemical substance expected to contact the bearing during normal use or storage. Sim
32、ilarly, the material shall not cause any chemical deterioration of any other bearing component. The cages shall be made from carbon steel (one piece stamped). Materials shall operate from -65 to 230 F (-53.9 to 110 C). 3.3 Tolerance class. The tolerance limits for bearings shall conform to tolerance
33、 class 4 as tabulated in ABMA Standard 19.2. Allowable tolerances for bearing components and assembled bearings are listed in tables II through VI. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE II. Running clearance. A-A-59656B 7Bearings manu
34、factured with correct running clearance for these fits Size code (ref) Live shaft diameter limits Dead shaft diameter limits Housing Size code(ref) Live shaft diameter limits Dead shaft diameter limits Housing Tight fit Split fit Live shaft bore limits Dead shaft bore limits Tight fit Split fit Live
35、 shaft bore limits Dead shaft bore limits Loose fit Tight fit Loose fit Tight fit 001 0.7515 - 0.7510 0.7505 - 0.7500 1.8534 - 1.8524 1.8494 - 1.8484 026 4.0030 - 4.0020 4.0010 - 4.0000 7.1280 - 7.1270 7.1240 - 7.1230002 1.2515 - 1.2510 1.2505 - 1.2500 2.3155 - 2.3145 2.3115 - 2.3100 027 4.0030 - 4.
36、0020 4.0010 - 4.0000 7.5030 - 7.5020 7.4990 - 7.4980003 1.5015 - 1.5010 1.5005 - 1.5000 2.7200 - 2.7190 2.7160 - 2.7150 028 4.0030 - 4.0020 4.0010 - 4.0000 7.5030 - 7.5020 7.4990 - 7.4980004 1.7517 - 1.7510 1.7505 - 1.7500 3.7530 - 3.7520 3.7490 - 3.7480 029 4.1280 - 4.1270 4.1260 - 4.1250 7.0896 -
37、7.0886 7.0856 - 7.0846005 1.9700 - 1.9695 1.9690 - 1.9685 3.5463 - 3.5453 3.5423 - 3.5413 030 4.1280 - 4.1270 4.1260 - 4.1250 7.1280 - 7.1270 7.1240 - 7.1230006 2.0020 - 2.0010 2.0005 - 2.0000 3.6748 - 3.6738 3.6708 - 3.6698 031 4.5035 - 4.5025 4.5010 - 4.5000 7.5030 - 7.5020 7.4990 - 7.4980007 2.00
38、20 - 2.0010 2.0005 - 2.0000 4.2530 - 4.2520 4.2490 - 4.2480 032 4.5035 - 4.5025 4.5010 - 4.5000 8.3780 - 8.3770 8.3740 - 8.3730008 2.1270 - 2.1260 2.1255 - 2.1250 4.3780 - 4.3770 4.3740 - 4.3730 033 5.0035 - 5.0025 5.0010 - 5.0000 7.1905 - 7.1895 7.1865 - 7.1855009 2.1674 - 2.1664 2.1659 - 2.1654 3.
39、9400 - 3.9390 3.9360 - 3.9350 034 5.0035 - 5.0025 5.0010 - 5.0000 8.1280 - 8.1270 8.1240 - 8.1230010 2.3770 - 2.3760 2.3755 - 2.3750 4.8780 - 4.8770 4.8740 - 4.8730 035 5.0035 - 5.0025 5.0010 - 5.0000 9.2530 - 9.2520 9.2490 - 9.2480011 2.6275 - 2.6265 2.6255 - 2.6250 5.0030 - 5.0020 4.9990 - 4.9980
40、036 5.3785 - 5.3775 - 7.5030 - 7.5020 - 012 2.7525 - 2.7515 2.7505 - 2.7500 4.7274 - 4.7264 4.7234 - 4.7224 037 5.5040 - 5.5030 - 9.6280 - 9.6270 - 013 2.7584 - 2.7574 2.7564 - 2.7559 4.7274 - 4.7264 4.7234 - 4.7224 038 5.6290 - 5.6280 - 7.8780 - 7.8770 - 014 2.8775 - 2.8765 2.8755 - 2.8750 5.0030 -
41、 5.0020 4.9990 - 4.9980 039 5.7540 - 5.7530 - 9.5030 - 9.5020 - 015 3.0025 - 3.0015 3.0005 - 3.0000 5.3780 - 5.3770 5.3740 - 5.3730 040 6.0040 - 6.0030 - 10.0030 - 10.0020 - 016 3.0025 - 3.0015 3.0005 - 3.0000 6.0030 - 6.0020 5.9990 - 5.9980 041 6.8795 - 6.8785 - 9.7530 - 9.7520 - 017 3.2525 - 3.251
42、5 3.2505 - 3.2500 5.5145 - 5.5135 5.5105 - 5.5095 042 7.0045 - 7.0035 - 11.1280 - 11.1270 - 018 3.2525 - 3.2515 3.2505 - 3.2500 6.1280 - 6.1270 6.1240 - 6.1230 043 7.0045 - 7.0035 - 11.3780 - 11.3770 - 019 3.5030 - 3.5020 3.5010 - 3.5000 6.0030 - 6.0020 5.9990 - 5.9980 044 7.0045 - 7.0035 - 11.3780
43、- 11.3770 - 020 3.5030 - 3.5020 3.5010 - 3.5000 6.3780 - 6.3770 6.3740 - 6.3730 045 7.0045 - 7.0035 - 11.7530 - 11.7520 - 021 3.7530 - 3.7520 3.7510 - 3.7500 6.3780 - 6.3770 6.3740 - 6.3730 046 7.3795 - 7.3785 - 12.6310 - 12.6290 - 022 3.7530 - 3.7520 3.7510 - 3.7500 7.0896 - 7.0886 7.0856 - 7.0846
44、047 8.0050 - 8.0040 - 12.5060 - 12.5040 - 023 3.7530 - 3.7520 3.7510 - 3.7500 7.1280 - 7.1270 7.1240 - 7.1230 048 9.0055 - 9.0045 - 14.0060 - 14.0040 - 024 4.0030 - 4.0020 4.0010 - 4.0000 6.6280 - 6.6270 6.6240 - 6.6230 049 9.5060 - 9.5050 - 14.5060 - 14.5040 - 025 4.0030 - 4.0020 4.0010 - 4.0000 7.
45、0896 - 7.0886 7.0856 - 7.0846 - - - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59656B 8 TABLE III. Cone bore tolerance. Cone bore (d) Size range Tolerance Over Inclusive Plus Minus 0.0000 3.0000 5 0 3.0000 12.0000 10 0 Note: Allowable to
46、lerances are in 0.0001 inch. TABLE IV. Cup diameter tolerance. Cup diameter (D) Size range Tolerance Over Inclusive Plus Minus 0.0000 12.0000 10 0 12.0000 24.0000 20 0 Note: Allowable tolerances are in 0.0001 inch. TABLE V. Bearing width tolerance. Bearing width (T) Bore size range Tolerance Over In
47、clusive Plus Minus 0.0000 5.0000 100 0 5.0000 12.0000 300 0 Note: Allowable tolerances are in 0.0001 inch. TABLE VI. Assembled bearing tolerance. Assembled bearing maximum radial runout Cup outside diameter (D) Tolerance Over Inclusive 0.0000 24.0000 20 Note: Allowable tolerances are in 0.0001 inch.
48、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59656B 9 3.4 Dynamic load rating. The bearing dynamic load rating shall conform to the requirements specified in table I for each bearing size code. The listed ratings conform to the requirements s
49、pecified in ABMA Standard 11, “Load Ratings and Fatigue Life for Roller Bearings“. 3.5 Lubrication. The bearings shall be furnished without lubrication. 3.6 Contact angle. All bearings are normal angle bearings having a contact angle between 10 and 19 degrees. The contact angle is the angle between the line of action of the roller load and a plane perpendicula
