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 there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this p
3、ublication may 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: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS22227B AEROSPACE STANDARD AS22227 REV. B Issued 2004-02 Revised 2014-09Supersed
5、ing AS22227A Bearing, Ball, Annular, Generator and Motor Generator RATIONALE AS22227 Rev B is a 5-year review and update to this specification. This consists of changes to update the applicable publications 1. SCOPE AND CLASSIFICATION 1.1 Scope This standard establishes the requirements for antifric
6、tion ball bearings primarily intended for use in aircraft electrical generators and motor-generators. 1.2 Classification Bearings shall be of the following types: Type I Bearing, Ball, Annular, primarily for aircraft generators and motor-generators, Standard Light (AS17107) Type II Bearing, Ball, An
7、nular, primarily for aircraft generators and motor-generators, Wide Cartridge (AS17108) Type III Bearing, Ball, Annular, primarily for aircraft generators and motor-generators, Thin Extra Light (AS17109) 2. APPLICABLE DOCUMENTS The following publications form a part of this document to the extent sp
8、ecified herein. The latest issue of SAE publications shall apply. The applicable 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 precede
9、nce. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. SAE INTERNATIONAL AS22227B Page 2 of 17 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (insid
10、e USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS-QQ-S-763 Steel Corrosion Resistant, Bars, Wire, Shapes, and Forgings AMS2303 Steel Cleanliness, Aircraft Quality Martensitic Corrosion-Resistant Steels Magnetic Particle Inspection Procedure AMS2700 Passivation of Corrosion Resistant S
11、teels AMS5618 Steel, Corrosion-Resistant, Bars, Wire, and Forgings 17Cr - 0.52Mo (0.95 - 1.20C) (440C) Consumable Electrode Vacuum Melted AMS5630 Steel, Corrosion-Resistant, Bars, Wire, and Forgings 17Cr - 0.52Mo (0.95 - 1.20C) (440C) AMS5880 Steel, Corrosion-Resistant, Bars, Wire, and Forgings 17Cr
12、 - 0.52Mo (0.95 - 1.20C) (SAE 51440C) for Bearings Applications AMS6440 Steel, Bars, Forgings, and Tubing 1.45Cr (0.93 - 1.05C) (SAE 52100) For Bearing Applications AMS6444 Steel, Bars, Forgings, and Tubing 1.45Cr (0.93 - 1.05C) (SAE 52100) Premium Aircraft-Quality, Consumable Electrode Vacuum Melte
13、d AIR4127 Steel: Chemical Composition and Hardenability AS17107 Bearing, Ball, Annular, Primarily for Aircraft Generators and Motor-Generators, Standard Light, Type I AS17108 Bearing, Ball, Annular, Primarily for Aircraft Generators and Motor-Generators, Wide Cartridge, Type II AS17109 Bearing, Ball
14、, Annular, Primarily for Aircraft Generators and Motor-Generators, Thin Extra Light, Type III 2.2 U.S. Government Publications Available from DLA Document Services, Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6396, http:/quicksearch.dla.mil/.MIL-C-11796 Corrosion Prev
15、entive Compound, Petrolatum, Hot Application MIL-DTL-197 Packaging of Bearings, Associated Parts and Sub-Assemblies MIL-PRF-7808 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base MIL-PRF-23699 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base, NATO Code Numbers 0-156, 0-152, 0-154, and
16、 0-167 MIL-PRF-27617 Grease, Aircraft and Instrument, Fuel and Oxidizer Resistant MIL-PRF-81322 Grease, Aircraft, General Purpose Wide Temperature Range, NATO Code G-395 MIL-STD-130 Identification Marking of U.S. Military Property MIL-STD-1647 Identification Markings for Domestically Manufactured Be
17、arings, Ball, Annular for Instruments and Precision Components SAE INTERNATIONAL AS22227B Page 3 of 17 2.3 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 A240/240M Chromium and Chromium
18、-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and General Applications ASTM A313/313M Standard Specification for Stainless Steel Spring Wire ASTM A380 Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment and Systems ASTM A580/580M Stan
19、dard Specification for Stainless Steel Wire ASTM A666 Specification for Annealed or Cold Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat BarASTM A693 Precipitation Hardening Stainless and Heat Resisting Steel Plate Sheet, and Strip ASTM A967 Chemical Passivation Treatments for Stainle
20、ss Steel Parts ASTM D2000 Standard Classification System for Rubber Products in Automotive Applications ASTM E18 Standard Test Methods for Rockwell Hardness of Metallic Materials ASTM E45 Standard Test Methods for Determining the Inclusion Content of Steel ASTM E112 Standard Test Methods for Determi
21、ning Average Grain Size ASTM E140 Standard Hardness Conversion Tables for Metals Relationship among Brinell Hardness Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leob Hardness ASTM F2215 Standard Specification for Balls, Bearings, Ferrous and N
22、on-Ferrous for Use in Valves, and Bearing Applications 2.4 ASME Publications Available from American Society for Quality, 600 North Plankinton Avenue, Milwaukee, WI 53203, Tel: 800-248-1946 (United States or Canada), 001-800-514-1564 (Mexico) or +1-414-272-8575 (all other locations), www.asq.org or
23、ASME, P.O. Box 2900, 22 Law Drive, Fairfield, NJ 07007-2900, Tel: 800-843-2763 (U.S./Canada), 001-800-843-2763 (Mexico), 973-882-1170 (outside North America), www.asme.org.ASME B46.1 Surface Texture (Surface Roughness, Waviness and Lay) ASME B89.3.1 Measurement of Out of Roundness ASQ Z1.4 Sampling
24、Procedures and Tables for Inspection by Attributes SAE INTERNATIONAL AS22227B Page 4 of 17 2.5 American Iron and Steel Institute Publications Available from American Iron and Steel Institute, 25 Massachusetts Avenue, NW, Suite 800, Washington, DC 20001, Tel: 202-452-7100, www.steel.org.AISI 305 Stee
25、l, Stainless (Austentic) AISI 440C Steel, Stainless (Martensitic) AISI 1008 Steel, Ni-Cr-Mo Carbon AISI 1010 Steel, Ni-Cr-Mo Carbon AISI 52100 Chrome Alloy Steel 2.6 American Bearing Manufacturers Association Publications Available from American Bearing Manufacturers Association, 2025 M Street, NW,
26、Suite 800, Washington, DC 20036-3309, Tel: 202-367-1155, www.americanbearings.org.ABMA 4 Tolerance Definitions and Gauging Practices for Ball and Roller Bearings ABMA 9 Load Ratings and Fatigue Life for Ball Bearings ABMA 10 Metal balls for Unground Bearings and Other Uses ABMA 20 Radial Bearings of
27、 Ball, Cylindrical Roller and Spherical Roller Types, Metric Design 2.7 Department of Defense Publications FAR Federal Acquisition Regulations 2.8 Sampling Procedures Product lot sampling for inspection and acceptance shall be in accordance with ASQ Z1.4 Sampling Procedures and Tables for Inspection
28、 by Attributes. 2.9 Order of Precedence In the event of a conflict between the text of this standard and the reference cited herein, the text of this standard shall takeprecedence. Nothing in this standard, however, shall supersede applicable laws and regulations unless a specific exemption has been
29、 obtained. 2.10 Definition 2.10.1 BEARING VOID The volume between the inner and outer rings minus the volume of the balls and retainer. 3. REQUIREMENTS 3.1 AS Part Standards The individual item requirements specified herein shall be in accordance with the applicable AS Part Standards. In the event o
30、f any conflict between the requirements of this standard and the AS sheet, the later shall govern. SAE INTERNATIONAL AS22227B Page 5 of 17 3.2 First Article When specified (see 6.2.1 d), a sample shall be subjected to first article inspection (see 4.4.1). 3.3 Materials 3.3.1 New Materials Versus Rec
31、onditioned Component Parts Bearings purchased as new items under this standard shall not contain parts that have previously been installed in any equipment and operated. There shall be no cracks or fractures of any components. Steels shall have been inspected for relative cleanliness prior to manufa
32、cturing. All materials used shall require material certifications. 3.3.2 Ball and Ring Materials Balls and rings shall be made of chromium-alloy steel, either AISI 52100 (AMS6440 or AMS6444) or AISI 440C (AMS-QQ-S-763, AMS5880, AMS5618, or AMS5630) steel. All rings fabricated of AISI 440C corrosion-
33、resistant steel shall be passivated after completion of all machining or metal removing operations and prior to assembly. The metal shall be homogeneous in structure, free from cracks, pipes, seams, laminations, surface decarburization, excessive inclusion of nonmetallic impurities and other defects
34、 which may render it unsuitable for the intended purpose. On microscopic examinations, the metal shall be free from signs of overheating. 3.3.2.1 Material Cleanliness Chromium-alloy steels used for the production of bearings shall meet the cleanliness requirements of AMS6440 or AMS6444. Stainless st
35、eel materials shall meet the cleanliness requirements of AMS5618, AMS5880, and AMS5630. 3.3.3 Grain Size Shepard grain size shall be six (6) or finer for rings and eight (8) for balls when examined as specified in ASTM E112. Balls and rings shall be dimensionally stable for operation from -67 to +38
36、5 F (-55 to 196 C). 3.3.4 Dimensional Stability The balls and rings shall withstand temperature changes and exposures with changes in diameter not exceeding 0.0001 inch per inch of diameter. 3.3.5 Hardness of Rings and Balls The through hardness of the 52100 (or 440C corrosion-resistant steel) rings
37、 and balls shall be 58 to 63 HRC. Chrome steels shall be 58 to 66 HRC as measured in accordance with ASTM E18. The hardness values of any one ring or ball shall not vary by more than three points HRC. 3.3.6 Ball Quality The minimum quality level of hardness, ball geometry and surface roughness shall
38、 be grade 10 as specified in ABMA 10 and in accordance with ASTM F2215. 3.3.7 Retainer Retainers shall retain the balls within the bearings and shall equally space them circumferentially between the races. They shall be so constructed as not to limit the proper functioning of the bearing to which th
39、ey are fitted. Retainers shall be of aball centered design. The retainers shall be formed either with pockets substantially fitting the surface of the balls or with cylindrical type ball pockets, but shall be of such design that the lubricant will be freely admitted. The retainers shall be ofmateria
40、ls, workmanship, and finish suitable for the purpose intended. They shall run concentrically with the races. No part of the retainer shall exhibit cracks, burrs, deformities or looseness. Retainers shall be free of burrs and folded over materialthat might be produced by normal manufacturing processe
41、s. They shall not run eccentrically visible to the normal eye. SAE INTERNATIONAL AS22227B Page 6 of 17 3.3.7.1 Steel Retainer Materials Steel retainers shall be made of either AISI 1008 or AISI 1010 low carbon steel. Steel retainers shall be used in part numbers -1 through -4 only. The steel retaine
42、rs shall withstand the operating speed limits specified in the Aerospace Standard (AS) Part Standards. 3.3.7.2 Machined Phenolic Retainers Machined phenolic retainers shall be used on part numbers -5 through -8. Bearings supplied with the phenolic retainers shall be capable of continuous operation a
43、t 250 F (121 C) and at 10 000 rpm or better. 3.3.8 Seals Two removable and replaceable seals shall be included to prevent loss of lubricant from and entrance of contaminants into the bearing. Seals shall be constructed so as to not limit the proper functioning of the bearing to which they are fitted
44、. Sealsshall operate within the specified temperature range without embrittlement, warpage, or loss of lubricant. Regardless of which seal material is utilized, it must meet the requirements of ASTM D2000. When specified, no seals shall be included for open bearing oil flow-lubricated applications.
45、Seals shall be impervious to or compatible with the applied lubricants and solvents and have high abrasion resistance but minimizing the effect of rubbing contact by its moderate degree of flexibility. 3.3.8.1 Seal Retaining Wire (Snap Rings) Seal retaining wire (snap rings) shall be made of a comme
46、rcially acceptable steel similar to the rings and balls such as ASTM A313/313M, ASTM A580/580M, ASTM A666, ASTM A240/240M, and ASTM A693. 3.3.8.2 Double Sealed Preferred Double sealed bearings shall be used in all applications where design considerations will allow. 3.3.8.3 Removable and Replaceable
47、 Seal and snap ring wires shall be easily removed and reinstalled with proper working tools. 3.3.8.4 Detachment Seals shall be securely attached to the outer ring by removable snap ring wires or shall have integral stainless steel inserts so as to withstand service vibration conditions or realistic
48、(application) radial and axial loads without becoming detached. 3.3.8.5 Placement Seals shall not project beyond the inner or out ring face nor interfere with retainer or balls under any loading conditions, withend play taken up or when axially preloaded. 3.3.8.6 Ring Distortion Design of the attach
49、ing members shall be such that distortion of outer rings is minimized to the point that applicable tolerancelimits of the bearing specified are not exceeded. SAE INTERNATIONAL AS22227B Page 7 of 17 3.4 Surface Finish Surface finish workmanship shall be in accordance with commercial practice used in the manufacture of high grade electric motor quality bearings used in aircraft and similar critical applications requiring smooth and quiet ru
