1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2009 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS6039DAEROSPACESTANDARDAS6039 REV. D Issued 1997-10 Revised 2009-12 Superseding AS6039C (R) Be
5、arings, Ball, Rod End, Double Row, Self-Aligning RATIONALEThe reason for updating this document is to clarify the definition of Section 3.2.1 Product Change. Additional updates were also done to meet the current SAE Aerospace Technical Report Style Manual dated January 2008.NOTICEThis document refer
6、ences a part which contains cadmium as a plating material. Consult local officials if you have questions concerning cadmiums use. 1. SCOPE 1.1 Scope This specification covers sealed, self-aligning, anti-friction, rod end ball bearings with application in temperature ranges (1) -65F to 250F and (2) -
7、65F to 300F with 20% reduction of dynamic load carrying capacity when subjected to operation above 250 F. 1.2 Classification The bearings shall be of the following types, as specified (see 6.2): Type I - Bearing, ball, solid shank, rod end (AS21150) Type II - Bearing, ball, external thread, rod end
8、(AS21151) Type III - Bearing, ball, hollow shank, rod end (AS21152) Type IV - Bearing, ball, internal thread, rod end (AS21153) 2. APPLICABLE DOCUMENTS The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applic
9、able issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regul
10、ations unless a specific exemption has been obtained. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS6039D Page 2 of 192.1 SAE Publications Available from SAE International, 400 Commonwealth D
11、rive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2417 Plating, Zinc-Nickel Alloy AMS3652 Polytetrafluoroethylene (PTFE) Film Non-Critical Grade AMS3666 Polytetrafluoroethylene (PTFE) Sheet, Glass Cloth Reinforced AMS6274 Steel
12、Bars, Forgings, and Tubing, 0.50Cr - 0.55Ni - 0.20Mo (0.18 - 0.23C) (SAE 8620) AMS6440 Steel Bars, Forgings, and Tubing, 1.45Cr (0.93 - 1.05C) (SAE 52100), For Bearing Applications AS8879 Screw Threads - UNJ Profile, Inch Controlled Radius Root With Increased Minor Diameter AS21150 Bearing, Ball, Ro
13、d End, Double Row, Precision, Solid Shank, Self-Aligning, Airframe, Type I, -65 to 300 F AS21151 Bearing, Ball, Rod End, Double Row, Precision, External Thread, Self-Aligning, Airframe, Type II, -65 to 300 F AS21152 Bearing, Ball, Rod End, Double Row, Precision, Hollow Shank, Self-Aligning, Airframe
14、, Type III, -65 to 300 F AS21153 Bearing, Ball, Rod End, Double Row, Precision, Internal Thread, Self-Aligning, Airframe, Type IV, -65 to 300 F AMS-QQ-P-416 Plating, Cadmium (Electrodeposited) 2.2 U.S. Government Publications Available from the Document Automation and Production Service (DAPS), Buil
15、ding 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. Tel: 215-697-6257, http:/assist.daps.dla.mil/quicksearch/.MIL-STD-129 Military Marking For Shipment And Storage MIL-STD-130 Identification Marking of U.S. Military Property MIL-DTL-197 Packaging of Bearings, Associated Parts and Subassemblie
16、s. MIL-PRF-23827 Grease, Aircraft and Instrument, Gear and Actuator Screw, NATO Code Number G-354, Metric MIL-PRF-81322 Grease, Aircraft, General Purpose, Wide Temperature Range 2.3 ANSI Publications Available from American National Standards Institute, 25 West 43rdStreet, New York, NY 10036-8002, T
17、el: 212-642-4900, www.ansi.org. ANSI/ABMA Std. 4 Tolerance Definitions and Gauging Practices Dimensions/Tolerances/Gauging Practices for Ball and Roller Bearings Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license fr
18、om IHS-,-,-SAE AS6039D Page 3 of 192.4 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D 4550 Standard Classification for Thermoplastic Elastomer-Ether-Ester ASTM E 1444 Standard Practi
19、ce for Magnetic Particle Inspection ASTM F 2215 Standard Specification for Balls, Bearings, Ferrous and Nonferrous for Use in Bearings, Valves, and Bearing Applications 2.5 ASME Publications Available from American Society of Mechanical Engineers, 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-290
20、0, Tel: 973-882-1170, www.asme.org. ASME B46.1 Surface Texture (Surface Roughness, Waviness and Lay) 3. REQUIREMENTS 3.1 Aerospace Standards (AS) The individual item requirements shall be specified herein and in accordance with the applicable AS sheets. In the event of any conflict between the requi
21、rements of this specification and the AS sheet, the latter shall govern. 3.2 Qualifications The bearings furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at the time prior to the award of a contract (see Sections 4 and 6).
22、 3.2.1 Product Change Any change in product design, including raceway geometry or dimensions, rolling element dimensions, rolling element quantity, seals, materials, processing procedures or plant location shall be reported to the qualifying activity and will require requalification of the product t
23、o an extent determined by the qualifying activity. Any other specific changes which must be brought to the qualifying activitys attention will be identified in the qualification notification letter. For the purposes of this specification “change in processing procedures” means a change in any of the
24、 following: (1) the company performing the outer raceway case hardening, or (2) the company performing the final machining of the outer and inner race.3.2.2 Product Manufacture The bearing manufacturer shall be capable of performing the preponderance of manufacturing operations in-house, but may sub
25、contract these operations at its option. Component inspection shall be performed at the plant listed on the Qualified Products List. If manufacturing operations are performed in more than one plant, the manufacturers additional plant(s) shall be reported to the qualifying activity. The manufacturer
26、is responsible for meeting all requirements of the specification and for the quality of the end product, whether it is manufactured totally in-house or some of the operations are performed by a subcontractor. Inherent in the responsibility for the end product is the responsibility to verify that the
27、 subcontractors processes meet specification requirements. A change in subcontractor need not be reported to the qualifying activity unless specifically identified in the qualification notification letter. (NOTE: Bearings partly or completelymanufactured in foreign countries shall be subject to the
28、laws and procurement regulations pertaining to acquisition of foreign made products.) Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS6039D Page 4 of 193.2.3 Certification of Qualification To r
29、etain qualification of a product approved for listing on the Qualified Products List (QPL), the Qualifying Activity shall require the manufacturer to verify by certification that the manufacturers product complies with the requirements of this specification. This verification by certification will b
30、e in 2 year intervals from the date of original qualification and will beinitiated by the Qualifying Activity. The Qualifying Activity reserves the right to re-examine or require the manufacturer to retest the qualified product whenever deemed necessary to ensure that the product continues to meet a
31、ny or all of the specification requirements. Sample size and applicable tests to be determined by the qualifying activity. 3.3 Material The bearing shall conform to materials as listed on AS21150, AS21151, AS21152, or AS21153, as applicable (see 6.2b). Materials used shall be free from defects which
32、 would adversely affect the performance or maintainability of individual components or the overall assembly. Materials not specified herein shall be of the same quality used for the intended purpose in commercial practice. None of the above shall be interpreted to mean that the use of used or rebuil
33、t products will be allowed. 3.4 Design and Construction Only factory new bearings, as specified herein, shall be furnished. Details of the working parts shall be optional. 3.4.1 Rings The outer ring shall be of single-piece construction with the rod end shank. The inner ring shall be of a single-pie
34、ce construction.3.4.2 Balls Balls shall meet the requirements of ASTM F2215 and be as specified on the applicable AS sheet. 3.4.3 Threads 3.4.3.1 Class 1 Rod Ends (External Thread) Dimensions, form and contour shall conform to AS8879. Rerolling of threads to correct dimensional deficiencies shall no
35、t be permitted. 3.4.3.2 Class 2 Rod Ends (Internal Thread) Threads shall conform to AS8879. 3.4.3.3 Thread Discontinuities (Laps, Seams and Surface Irregularities) Threads shall have no multiple or single laps at the root or on the sides (Figure 3), except that laps are permissible at the crest whic
36、h do not exceed 25% of basic thread depth, and on the sides outside the pitch diameter (see Figure 4). Deviation from the thread contour is permissible at the crest of the thread as shown in Figure 4. The incomplete thread at each end of the thread may also deviate from contour. 3.4.4 Dimensions and
37、 Tolerances Dimensions and tolerances shall be in accordance with the applicable AS sheet. 3.4.5 Shank Alignment The point representing the center of self-alignment motion shall be coincident with the axis of the rod end within 0.010 inch. Copyright SAE International Provided by IHS under license wi
38、th SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS6039D Page 5 of 193.4.6 Weight The approximate weight of the bearing shall be as specified on the applicable AS sheet. 3.4.7 Plating All external surfaces of the rod end, excluding the bore, bore chamfer,
39、seal, and seal retainer, shall be either Zinc-Nickel plated in accordance with AMS2417, Type 2 or Cadmium plated per AMS-QQ-P-416, Type I, Class 2. All external unthreaded surfaces shall have a plating thickness of 0.0003 to 0.0006 inches. The plating thickness of the bore chamfers shall be a maximu
40、m of .0006 inches. External threaded surfaces shall have a plating thickness range of 0.0002 to 0.0005 inches. Hollow (AS21152) and internally threaded (AS21153) shanks need not be internally plated. 3.4.8 Identification of Products Bearings shall be permanently and legibly marked with the bearing m
41、anufacturers part number, name or symbol (in accordance with MIL-STD 129 and MIL-STD-130), and lot traceability. The individual bearing package and container shall be marked with the complete MS part number, and the manufacturers name, trademark, or brand, part number, and date of lubrication in acc
42、ordance with MIL-STD-129. 3.4.9 Hardness The inner ring and balls shall be through-hardened and shall have a hardness as specified on the applicable AS sheet. The outer raceways shall be case hardened, and the hardness on the surface shall be as specified on the applicable AS sheet.3.4.10 Surface Ro
43、ughness The sides of the inner ring shall have a smooth machine finish that shall not exceed 63 microinches (AA). Otherwise, the surface roughness shall be as specified on the applicable AS sheet. 3.4.11 Seals (Grease Retention) The seals shall be capable of withstanding the test requirements as spe
44、cified in 4.5.4.1 without failure. Grease conforming to MIL-PRF-81322 shall be injected into the bearing. The amount of grease shall be measured by weight and shall be at least 80% of the nominal theoretical volume within the rod end. Not less than 25% of the bearing lubricant by weight shall be ret
45、ained in the bearing at the end of 100 hours of testing. 3.4.12 Seals (Dust Contamination): After completion of the dust test specified in 4.5.4.2, seven out of ten tested bearings shall meet the following requirements:- Radial clearance shall not increase more than 50% or 0.0002 inches over the pre
46、test value, whichever is greater. - Starting torque shall not increase more than 100% or 2 inch-ounces over the pretest value, whichever is greater. 3.4.13 Lubrication The bearing shall be thoroughly cleaned prior to lubrication. Grease conforming to MIL-PRF-81322 or MIL-PRF-23827 shall be injected
47、into the bearing, filling the bearing voids 80% minimum full. The bearing bore and the inside diameter of hollow or internally threaded shanks shall also be coated with MIL-PRF-81322 or MIL-PRF-23827 Grease. The bearing shall have not been lubricated more than 36 months prior to date of delivery of
48、the bearing under contract. The bearing external surfaces shall be coated with the same grease that is packed in the bearing or compatible oil per MIL-DTL-197. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS6039D Page 6 of 193.5 Performance 3.5.1 Internal Clearance (Qualification) Radial and axial clearance, measured before the radial and axial limit load rating tests (see 4.5.6 and 4.5.7), shall not exceed the limits as specified on the applicable AS sheet. 3.5.2 Internal
