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-59658B 8 September 2011 SUPERSEDING A-A-59658A 22 May 2006 COMMERCIAL ITEM DESCRIPTION BEARINGS, ROLLER, TAPERED, DOUBLE ROW, STRAIGHT BORE, TWO SINGLE CONES WITH CONTACTING FRONT
3、FACES SLOTTED AND CHAMFERED FOR LUBRICATION, ONE DOUBLE CUP WITH LUBRICATION HOLES AND GROOVE (TYPE TNASW) 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 acqui
4、sition requirements for complete (cone with rollers and cup) double row, tapered, roller bearings with straight bore, two single cones with contacting front faces slotted and chamfered for lubrication, one double cup with lubrication holes and groove (type TNASW) for general purpose use. These beari
5、ngs are not intended for use in special precision applications such as on aircraft, precision ordnance, or submarine equipment. 2. CLASSIFICATION. The roller bearings shall be of one type (TNASW) and classified by the size codes listed in table I. The column headings in table I refer to bearing char
6、acteristics defined in figure 1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59658B 2 FIGURE 1. Bearing characteristics. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3A-A-59658B TABLE I. Si
7、ze codes and dimensions. Size code Part number 1d D T B R 2r 2d aD aK factor Basic dynamic load ratings (lb.) Bore Outside diameter Overall width Overall cup width Max. shaft fillet radius Max. housing fillet radius Recommended shoulder diameter Cone-cup Shaft Housing Two row radial 001 NA26118-SW -
8、 26284D 1.1806 2.8338 1.6835 1.4375 0.06 0.03 1.56 2.56 1.62 16300 002 NA3780-SW - 3729D 2.0000 3.6718 2.5625 2.0625 0.14 0.03 2.52 3.46 1.73 33700 003 NA455-SW - 452D 2.0000 4.2500 2.5625 2.1250 0.14 0.03 2.56 3.94 1.74 37400 004 NA558-SW - 552D 2.3750 4.8750 3.1250 2.5000 0.14 0.06 2.99 4.53 1.69
9、52600 005 NA643-SW - 632D 2.7500 5.3750 3.7500 3.0000 0.14 0.06 3.39 4.92 1.61 64200 006 NA484-SW - 472D 2.7559 4.7244 2.5626 2.1250 0.14 0.03 3.27 4.49 1.52 39600 007 NA759-SW - 752D 3.5000 6.3750 4.1250 3.3750 0.14 0.06 4.17 5.91 1.71 89800 008 NA691-SW - 672D 4.0000 6.6250 3.6250 2.7500 0.14 0.03
10、 4.65 6.30 1.24 68200 009 NA67791-SW - 67720CD 7.0000 9.7500 4.0625 3.3125 0.14 0.03 7.64 9.95 1.33 66800 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 configurations and are not limited
11、to one bearing assembly. 2These maximum fillet radii shall be cleared by the bearing corners. 3Minus value indicates load center inside cone backface. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59658B 4 3. SALIENT CHARACTERISTICS 3.1 Dimensi
12、ons. Bearing dimensions (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 Bea
13、rings - Radial Inch 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), cup
14、s (outer rings), and 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 Specificat
15、ion for Carburizing 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 mo
16、re than 64 HRC as defined 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
17、use or storage. Similarly, 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 c
18、onform to tolerance class 4 as tabulated in ABMA Standard 19.2. Allowable tolerances for bearing components and assembled bearings are listed in tables II through V. TABLE II. Cone bore tolerance. Cone bore (d) Size range Tolerance Over Inclusive Plus Minus 0.0000 3.0000 5 0 3.0000 6.0000 10 0 Note:
19、 Allowable tolerances are in 0.0001 inch. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59658B 5 TABLE III. 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: A
20、llowable tolerances are in 0.0001 inch. TABLE IV. Bearing width tolerance. Bearing width (T) Bore size range Tolerance Over Inclusive Plus Minus 0.0000 5.0000 100 0 5.0000 12.0000 300 0 Note: Allowable tolerances are in 0.0001 inch. TABLE V. Assembled bearing tolerance. Assembled bearing maximum rad
21、ial runout Cup outside diameter (D) Tolerance Over Inclusive 0.0000 24.0000 20 Note: Allowable tolerances are in 0.0001 inch. 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
22、requirements specified 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
23、angle between the line of action of the roller load and a plane perpendicular to the bearing axis. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59658B 6 4. REGULATORY REQUIREMENTS 4.1 Recovered materials. The offeror/contractor is encouraged t
24、o use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 4.2 Foreign acquisition restrictions. Unless otherwise indicated in the solicitation and resulting contract, the foreign acquisition restrictions in Section 2
25、52.225, Clause 252.225.7016, of the Defense Federal Acquisition Regulation Supplement (DFARS) apply to products described by this CID. 5. PRODUCT CONFORMANCE PROVISIONS 5.1 Product conformance. The products provided shall meet the salient characteristics of this CID, conform to the producers own dra
26、wings, specifications, standards, and quality assurance practices, and be the same product offered for sale in the commercial marketplace. The government reserves the right to require proof of such conformance. 5.2 Market acceptability. The products offered must have been previously sold either to t
27、he government or on the commercial market. 6. PACKAGING 6.1 Preservation, packing, and marking. Unless otherwise specified in the acquisition order, the bearings shall be preserved, packaged, and marked in accordance with MIL-DTL-197, “Packaging of Bearings, Associated Parts and Subassemblies“ (see
28、7.3(c). 7. NOTES 7.1 Part or identification number (PIN). The following PIN procedure is for government purposes and does not constitute a requirement for the contractor. AA59658 - 003 Example of reference part number Size code (see table I) CID Number AA59658 - 003 indicates: Bearing bore 2.0000 in
29、ches; outside diameter 4.2500 inches; width 2.5626 inches. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59658B 7 7.2 Sources of documents. 7.2.1 DFARS and FAR. Copies of DFARS and FAR may be obtained from the Superintendent of Documents, P.O.
30、Box 371954, Pittsburgh, PA 15250-7954. Electronic copies of DFARS may be obtained from http:/www.acq.osd.mil/dpap/dars/dfarspgi/current/index.html. Electronic copies of FAR may be obtained from https:/www.acquisition.gov/far/. 7.2.2 Military specifications. Copies of military specifications may be o
31、btained from Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. Electronic copies may be obtained from https:/assist.daps.dla.mil/. 7.2.3 ABMA standards. Copies of ABMA standards may be obtained from the American Bearing Manufacturers Association, 202
32、5 M Street NW, Suite 800, Washington, DC 20036. Electronic copies may be obtained from http:/www.abma-dc.org/. 7.2.4 ASTM standards. Copies of ASTM standards may be obtained from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959. Electronic copies may be obta
33、ined from http:/www.astm.org/. 7.3 Ordering data. The acquisition order should specify the following information: a. CID document number, revision, and CID PIN. b. Bearing size (with dimension/load requirements if size is unlisted) (see 3.1). c. Preservation, packaging, and marking requirements (see
34、 6.1). 7.4 Cross-reference information. Table VI relates the original specification slant sheets to the replacement CIDs. TABLE VI. Federal specification to CID cross-reference. FF-B-187B specification sheets Replacement CID numbers ABMA types 1 A-A-59649 TS 2 A-A-59650 TSF 3 A-A-59651 TSS 4 A-A-596
35、52 TSSF 5 A-A-59653 TDI and TDIS 6 A-A-59654 TDO 7 A-A-59655 TDOS 8 A-A-59656 TNA (normal angle) 9 A-A-59657 TNAS (steep angle) 10 A-A-59658 TNASW 11 A-A-59659 TNASWE Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59658B 8 7.5 Subject term (key
36、word) listing. Bore Cone Cup Load Width MILITARY INTERESTS: CIVIL AGENCY COORDINATING ACTIVITY:Custodians: GSA - FAS Army - AR Navy - MC Air Force - 99 DLA - GS Review Activities: Navy - OS Air Force - 84 Preparing Activity: DLA - GS4 (Project 3110-2011-027) NOTE: The activities listed above were in
37、terested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST database at https:/assist.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
