1、Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: STDZNMGTdla.mil or Defense Logistics Agency Aviation VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616. Since contact information can change, you m
2、ay want to verify the currency of this address information using the ASSIST database at https:/assist.daps.dla.mil/. FSC 3110 METRIC A-A-59640B 11 March 2011 SUPERSEDING A-A-59640A 22 April 2008 COMMERCIAL ITEM DESCRIPTION BEARING, BALL, ANNULAR, DOUBLE ROW, ANGULAR CONTACT, FILLING SLOT, VERTEX OF
3、CONTACT ANGLES OUTSIDE BEARING, DIMENSION SERIES 32 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 metric, double row, angular contact, annular ball bearings for general-
4、purpose use. These bearings are not intended for use in critical aeronautical or critical special precision applications. 2. CLASSIFICATION. The ball bearings shall be classified by the class, sizes, cage materials, shield and snap ring configurations, precision tolerances, and lubricant and preserv
5、ative requirements listed below: Class 8 - dimension series 32 Size - bearing dimensions (see table I) Cage materials (see table II) Shield and snap ring configurations (see table III) Precision tolerances (see table IV) Lubricant and preservative requirements (see table V) 3. SALIENT CHARACTERISTIC
6、S 3.1 Dimensions. Bearing boundary dimensions shall conform to the requirements specified in table I for each of the coded bearing sizes. The listed dimensions conform to the requirements specified for the listed bearing sizes from dimension series 32 in American Bearing Provided by IHSNot for Resal
7、eNo reproduction or networking permitted without license from IHS-,-,-A-A-59640B 2 Manufacturers Association (ABMA) Standard 20, “Radial Bearings of Ball, Cylindrical Roller, and Spherical Roller Types, Metric Design“. The bearing size shall be as specified in the acquisition order (see 7.3(b). For
8、unlisted bearing sizes, the dimensional and dynamic load rating requirements should also be specified in the acquisition order. TABLE I. Dimensional requirements (ABMA series 32). Bearing size code Bore diameter (mm) Outside diameter (mm) Width (mm) Chamfer r/min. (mm) Minimum shaft shoulder diamete
9、r 1(mm) Dynamic load rating (minimum)(lb.) 00 10 30 14.3 0.6 15 1,635 01 12 32 15.9 0.6 17 1,635 02 15 35 15.9 0.6 20 2,155 03 17 40 17.5 0.6 22 2,745 04 20 47 20.6 1.0 26 4,000 05 25 52 20.6 1.0 31 3,515 06 30 62 23.8 1.0 36 5,910 07 35 72 27.0 1.1 42 7,545 08 40 80 30.2 1.1 47 8,600 09 45 85 30.2
10、1.1 52 9,335 10 50 90 30.2 1.1 57 10,120 11 55 100 33.3 1.5 63.5 11,815 12 60 110 36.5 1.5 68.5 14,650 13 65 120 38.1 1.5 73.5 16,090 14 70 125 39.7 1.5 78.5 17,640 15 75 130 41.3 1.5 84 18,250 16 80 140 44.4 2.0 90 23,680 17 85 150 49.2 2.0 95 24,480 18 90 160 52.4 2.0 100 29,510 19 95 170 55.6 2.1
11、 107 36,985 20 100 180 60.3 2.1 112 39,160 21 105 190 65.1 2.1 117 41,375 22 110 200 69.8 2.1 122 45,090 1Listed for reference purposes only. Shoulder height shall be determined to provide sufficient clearance for the direct application of bearing removal force against the bearing inner ring. If the
12、 required minimum clearance is not available, an alternative non-destructive bearing removal capability shall be provided. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59640B 3 3.2 Materials. 3.2.1 Rings. The bearing ring material shall be chr
13、omium-alloy steel 52100 (UNS G52986) as specified in ASTM A295/A295M, “Standard Specification for High-Carbon Anti-Friction Bearing Steel“. The finished rings shall not exceed the associated billet material inclusion rating that is also specified in ASTM A295/A295M. Ring hardness shall be at least 5
14、8 HRC as defined in ASTM E18, “Standard Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials“. The grain size of the ring material shall be determined in accordance with ASTM E112, “Standard Methods for Determining Average Grain Size“. 3.2.2 Balls. The bearing b
15、all material shall be chromium-alloy steel 52100 (UNS G52986) as specified in ASTM A295/A295M. The finished balls shall not exceed the associated billet material inclusion rating, which is also specified in ASTM A295/A295M. Balls shall be through-hardened no less than 60 HRC and no more than 67 HRC
16、as defined in ASTM E18. The grain size of the ball material shall be determined in accordance with ASTM E112. 3.2.3 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 norma
17、l use or storage. Similarly, the material shall not cause any chemical deterioration of any other bearing component. Metallic cage materials shall operate from -40 to 250 F (-40 to 121 C). Non-metallic cage materials shall operate from -20 to 250 F (-30 to 121 C). Unless otherwise specified in the a
18、cquisition order, the cage material shall be one of the optional coded types listed in table II (see 7.3(c). TABLE II. Cage materials. Code 1Material type J Pressed steel M Machined bronze or brass P Molded plastic (nylon 6/6 or equal) T Machined non-metallic (phenolic) Y Pressed brass X Other (spec
19、ify in acquisition order) 1No significant change from FF-B-171/36. 3.2.4 Shields. When used, the shield material shall be as recommended by the manufacturer unless otherwise specified in the acquisition order (see 7.3(d). The material shall be impervious to deterioration from any lubricant, preserva
20、tive, solvent, or other chemical substance expected to contact the bearing during normal use or storage. Similarly, the material shall not cause any chemical deterioration of any other bearing component. The shield shall remain functionally effective at a minimum temperature range of -20 to 250 F (-
21、30 to 121 C) for non-metallic and -40 to 250 F (-40 to 121 C) for metallic materials. Unless otherwise specified in the acquisition order, the shield and snap ring configuration for the bearing shall be one of the coded options listed in table III (see 7.3(e). Provided by IHSNot for ResaleNo reprodu
22、ction or networking permitted without license from IHS-,-,-A-A-59640B 4 TABLE III. Shield and snap ring configurations. Code 1Configuration options A Open B Single shield (opposite filling slot side) C Single shield (on filling slot side) D Double shield E Open with snap ring (on filling slot side)
23、F Open with snap ring (opposite filling slot side) G Single shield opposite filling slot side (snap ring on filling slot side) H Single shield and snap ring opposite filling slot side J Single shield and snap ring on filling slot side K Single shield on filling slot side (snap ring opposite filling
24、slot side) L Double shield (snap ring on filling slot side) M Double shield (snap ring opposite filling slot side) X Other (specify in acquisition order) 1No significant change from FF-B-171/36. 3.2.5 Snap ring. When used, the bearing snap ring and associated snap ring groove shall conform to the re
25、quirements specified in ABMA Standard 20. 3.3 Precision tolerance. The bearing precision tolerance level shall conform to Annular Bearing Engineers Committee (ABEC) class ABEC-1, ABEC-3, ABEC-5, or ABEC-7 as defined in ABMA Standard 20. The tolerance class and associated radial internal clearance sh
26、all be one of the coded options listed in table IV (see 7.3(f). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59640B 5 TABLE IV. Precision tolerance requirements. Code Tolerance class Radial internal clearance A ABEC-1 Group 2 (less than normal
27、) B Group N (normal) C Group 3 (greater than normal) D Group 4 (greater than group 3) T Group 5 (greater than group 4) E ABEC-3 Group 2 (less than normal) F Group N (normal) G Group 3 (greater than normal) H Group 4 (greater than group 3) U Group 5 (greater than group 4) J ABEC-5 Group 2 (less than
28、normal) K Group N (normal) L Group 3 (greater than normal) M Group 4 (greater than group 3) V Group 5 (greater than group 4) N ABEC-7 Group 2 (less than normal) P Group N (normal) R Group 3 (greater than normal) S Group 4 (greater than group 3) W Group 5 (greater than group 4) 3.3.1 Bearing precisio
29、n tolerance levels and internal clearances may be affected by the addition of shields. Manufacturers/suppliers should be consulted for availability of desired precision tolerances when shields are required. 3.4 Lubrication and preservation requirements. Unless otherwise specified in the acquisition
30、order, the bearing lubricant or preservative requirement shall be as selected from the approved coded options listed in table V (see 7.3(g). When grease fill is required, the bearing void (the airspace between the inner and outer rings of the assembled bearing) shall be 25 to 50 percent filled. Bear
31、ing preservative shall be in accordance with MIL-DTL-197, “Packaging of Bearings, Associated Parts and Subassemblies“. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59640B 6 TABLE V. Lubricant and preservative requirements. Code Lubricant or pr
32、eservative compound B Grease in accordance with MIL-PRF-81322 E Grease in accordance with DOD-G-24508H Grease in accordance with MIL-PRF-23827L Grease with SRI-2 or qualified equivalent S No fill T Preservation compound in accordance with MIL-DTL-197X Other (specify in the acquisition order) 4. REGU
33、LATORY REQUIREMENTS 4.1 Recovered materials. The offeror/contractor is encouraged to 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 sol
34、icitation and resulting contract, the foreign acquisition restrictions in Section 252.225, 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 sh
35、all meet the salient characteristics of this CID, conform to the producers own drawings, 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 Mar
36、ket acceptability. The products offered must have been previously sold either to the government or on the commercial market. 6. PACKAGING 6.1 Preservation, packing, and marking. Unless otherwise specified in the acquisition order, the bearings supplied shall be preserved, packed, and marked in accor
37、dance with MIL-DTL-197 (see 7.3(h). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59640B 7 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 co
38、ntractor. AA59640 - 8 04 J A B E Example of reference part number: Lubricant and preservative code (see table V) Precision tolerance code (see table IV) Shield and snap ring code (see table III) Cage material code (see table II) Bearing size code (see table I) Class 8 - dimension series 32 CID numbe
39、r AA59640 - 8 04 J A B E indicates: boundary dimension series 32; bore diameter 20 mm, outside diameter 47 mm, width 20.6 mm; pressed steel cage; open (no shields); ABEC-1 tolerance class, normal radial internal clearance; filled with grease in accordance with DOD-G-24508. 7.2 Sources of documents.
40、7.2.1 DFARS and FAR. Copies of DFARS and FAR may be obtained from the Superintendent of Documents, P.O. 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 ht
41、tps:/www.acquisition.gov/far/. 7.2.2 Military specifications. Copies of military specifications may be obtained 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 stan
42、dards. Copies of ABMA standards may be obtained from the American Bearing Manufacturers Association, 2025 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 Internationa
43、l, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959. Electronic copies may be obtained from http:/www.astm.org/ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59640B 8 7.3 Ordering data. The acquisition order should specify
44、 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. Cage material type (see 3.2.3). d. Shield material (see 3.2.4). e. Shield and snap ring configuration (see 3.2.4). f. Precision tolerance re
45、quirements (see 3.3). g. Lubricant and preservative requirement (see 3.4). h. Preservation, packing, and marking requirements (see 6.1). 7.4 Codes cross-reference. Tables VI, VII, and VIII contain cross-reference data for the PIN information as listed in FF-B-171/36 and this CID. 7.4.1 Bearing class
46、 designations. The CIDs replacing 33 of the 37 associated specification sheets of FF-B-171 have been assigned class codes corresponding to ABMA dimension series. Table VI lists the FF-B-171 specification sheets, the corresponding dimension series, the CID class codes, and the replacement CIDs. Provi
47、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59640B 9 TABLE VI. Federal specification to CID cross-reference. FF-B-171 specification sheets ABMA dimension series CID classcodes Replacement CID numbers 1 02, 03, 10 1, 2, 4 A-A-59581 2 19 5 A-A-59582
48、 3 10 4 A-A-59583 4 02 1 A-A-59584 5 03 2 A-A-59585 6 04 3 A-A-59586 7 02 1 A-A-59587 8 03 2 A-A-59589 9 32 8 A-A-59595 10 33 9 A-A-59596 11 02 1 A-A-59597 12 03 2 A-A-59598 13 22 6 A-A-59599 14 23 7 A-A-59600 15 19 - Canceled 16 10 Canceled 17 02 - Canceled 18 03 Canceled 19 19 5 A-A-59623 20 10 4
49、A-A-59624 21 02 1 A-A-59625 22 03 2 A-A-59626 23 04 3 A-A-59627 24 10 4 A-A-59628 25 02 1 A-A-59629 26 03 2 A-A-59630 27 04 3 A-A-59631 28 10 4 A-A-59632 29 02 1 A-A-59633 30 03 2 A-A-59634 31 04 3 A-A-59635 32 32 8 A-A-59636 33 33 9 A-A-59637 34 32 8 A-A-59638 35 33 9 A-A-59639 36 32 8 A-A-59640 37 33 9 A-A-59641 Provided by IHSNot fo
