1、A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM Edition approved for publication Comments should be sent within six months after the date of publication decision 88, Bd. Malesherbes 5th December 1989 A.E.C.M.A. 75008 PARIS * FRANCE prEN 2067 Issue P 1 December 1989 C 1 Chairman Mr. MOUTARDE DIT
2、 PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TL. 45-63-82-85 UDC : 629.7.05 : 621.827.1 : 621.85.053 : 621.828 : 658.56 Key words : Aeronautical industry, aircraft control, rod-end, rod- end with self-aligning ball bearing, ball, thread
3、ed shank, specification ENGLISH VERSION Aerospace series Rod-ends with self-aligning ball bearings Technical Specif cat ion Srie arspatiale Embouts rotule sur billes Spcification technique Luft- und Raumfahrt Osenkopfe mit Pendelkugellager Technische Lieferbedingungen This Aerospace Series pre-stand
4、ard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approvedby the experts of the concerned Commission following comment by the Member countries
5、. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and fo
6、rmal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for
7、ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2067 89 LOL23Ll OOOL71.19 5 m prES 2067 Page 2 Con tents 1 Scope and field of application 2 References 3 Def initions 4 Required characteristics, inspections and test methods 5 Quality assurance 6 Acceptance condi t
8、 i ons 7 Packaging 8 Certificate of conformity Annexe A Retent-ion tests for seals and shields Annexe B Sand and dust test Annexe C Temperature test Annexe D Verification of internal clearances Annexe E Verification of permissible and ultimate static loads Annexe F Lubricants for rod ends with self-
9、aligning ball bearings - essen t i a I ch aracteri st i cs Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-prEN 2067 Page 3 1 Scope and field of applic
10、ation This Standard specifies the required characteristics, Inspections and tests, quality assurance, and conditions for qual ification, acceptance and del ivery of the rod ends with self-aligning ball bearings designed to withstand (under load) small oscilla- tions and slow rotations only. This Sta
11、ndard appl es to al I rod ends with self-al igning bal I bearings, i.e,EN 2492 and . EN 3541 . It may be appl icable when mentioned in a product standard or in a design specification. 2 References IS0 5855/1 , Aerospace constructions - MJ Thread - Part 1 : General requirements IS0 5855/2 Aerospace c
12、onstructions - MJ Thread - Part 2 : Limit dimensions for nuts and bolts EN 2000 and supply of EN standard aerospace products EN 2492 Dimensions and loads - Aerospace series EN 3541 Aerospace series - Rod ends with self-aligning ball bearingSj with threaded shank - Dimensions, torques, clearances and
13、 loads. , Aerospace series - Quality assurance requirernTqts for the manufacture , Rod ends with self-aligning ball bearing with threaded shank - 9.5 3 Definitions 3.1 Rod ends with self-aligning ball bearings Comprising: - A head containing a self-aligning ball bearing, - A threaded shank with circ
14、ular safety groove, which may have a longitudinal groove for the locking device. 3.2 Surface discontinu it es - Crack: Break in the material which may exten intercrystal I ine or transcrystal I ine - Score or scratch: Open surface defect result - Lap: Surface defect where particles of metal then rol
15、led or forged into the surface. - Seam: Unwelded fold which appears as an open 3.3 internal clearances 3.3.1 Radia Total value body of the 3.3.2 Axial in all directions and be n character, ng from a tearing of the metal. or sharp edges are folded over and defect in the material. (Gr) of possible rad
16、ial displacements of the inner ring in relation to the rod end. (Ga) Total value of possible axil displacements of the inner ring in rela of the rod end. 3.4 Starting torque at zero load Maximum torque required to start. the rotation of the inner ring, with rod end he I d stat onary . 3.5 Del ivery
17、batch ion to the body the body of the This consfsts of rod ends with the same identity block, which may come from different product on batches. 1) Published as AECMA standard at the date of publication of the present standard. 2) In preparation at the date of publication of the present standard, Cop
18、yright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-j AECMA PREN20b7 89 1012311 0001951 3 prEN 2067 Page 4 4 Required characteristics, inspections and test me
19、thods See table 1 Table 1 Characteris+ics 4.1 Materials t to I erances 4.3 Masses C.5 Surface appearanc 1.5.1 of rod end body S.2iof the inner ring Iana bal Is I i 4.5 !Hardness I 4.7 Surface rough- 1 ness 4.8 ISurface treat- ment Inspections and test methods Q 1) Requirements Shall conform with pro
20、duct Chemical analysis or certi- X standards. f cate issued by semi-f ini- shed product manufacturer, Shall conform with product Suitable measuring instru- standards. men ts . Shal I conform with product Suitable methods. standards. Shal I conform with product Visual examination. standards. It shall
21、 be legible and shall not adversely affect the material or the func- tioning of +he i.03 end. ! X - X - X I I I No surface discontinuity Magnetic inspection for except those permitted examp I e in 4.9. X I I No surface discontinuity Magnetic inspection for liable to alter the example. characteristic
22、s and endurance of these parts. X Shal I confora with product Suitable processes standards. ring insTruments. I Shal I conform with product Suitable measuring instrume or vi sua I-tacti I e sampi es. i standa6ds. I I I Shal I conform with product - Visual examination. standards. - As per surface tre
23、atment standard. X 1) Q = Qualification test A = Acceptance test 2). These inspections shall be made in the absence of surface treatment, which, for the purposes of quai if cation, may be removed by a chemical process. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provide
24、d by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.12 .12. ,*12. .12. - Requ irements Thread tapping shal I con- form with product stan- dards. - No discontinuity below effective diameter . - Discontinuities not to exceed 20% of heig
25、ht of base thread, al lowed above effective diame- ter (see Fig. 2). - Surf ace irregu i ar i ti es permitted on crest of threads (see Figure 1). Characteri st ics Inspections and test methods Q Visual examination X Examinati37 of micrographic X section : - for qualification: on finished parts - for
26、 acceptance: by sampl ing during manufac- ture rhread di sconti- iuities ,Visual examination after re modal of seals and shields, 3rooves X- -ubr i cati on - The seals and shields shal I be fitted correctly on the rod end body, in such a way that the func- tioning of the self-ai igning bai I bearing
27、 is not affected. Annexe A has been comple- ted, the seals and shield:; shal I not have loosened 01 become deformed. - When the inspection of Seals and shield: ietenti on Vi sua I exami nafi on See Annexe A sea I ing The seals shal I: - rub on the inner ring and re-hin the grease, - prevent the pene
28、tration of foreign bodies. After this test, the run- ning behaviour of the rod ends shal 1 conform with 4.13.1. On completion of this test the behaviour shal I con- form with 4.11.1. remperature test Visual examination after the X inner ring Is turned manual ly in relation to the body of the rod end
29、. See Annexe B X See Annexe C X Shal 1 not change the thread 1 function. At least 80% of the free space in the rod end head shal I be charged with the grease specified in the product standards. Visual and threaded gauge I I Visual examination during manufacture. X 1)These checks shal I be made in th
30、e absence of any surface treatment which, for qualification purposes, may be removed by a chemical process. Q Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from I
31、HS-,-,-7 AECMA PRENZOb7 89 L0323LL 0003753 7 W prES 2067 Page 6 Table 1 (concluded) 4.16 4.17 Characteristics nterna I I earances : I radial : G axial : G:, , ;ehaviour in otat i on ,t ambi en? ,emperatwe ,t extreme wnperatures itarti ng torques it zero load erm i ss i b I e itatic loads - radial: -
32、 axial : Fa max CS UI timate static loads - radial - axial Requirements hall conform with product tandards. lo tight spots 0 After the test, the mean starting torque shal I not exceed 1.5 times the mean of the values recorded before the test. - No tight spots. ;ha1 I conform with the pro- luct stand
33、ards. ;ha1 I conform with product itandards. fter the removal of the oads, no permanent defor- iat i ons : - affecting the behaviour of the rod end in rota- tion and osci I lation (see 4.13.1) or, - increasing the inner ra- dial clearance by more than 5 pm or, - increasing the inner ax- ial clearanc
34、e by more than 15 pm. ifter the removal of the ,oads, no fractures or :racks. Inspections and test methods ee Annexe D nspection by manual ly rota- ing the inner ring. ee Annexe C. nspection by manual ly rota- ing the inner ring. uitable procedures and mea- uring instruments. n Rotate the inner ring
35、 at least 4 times to distribute the lubricant evenly, torque appl ied gradually to the inner ring in both directions, wifh th rod end he id stat onary. Read off the maximum value required to start up the inner ring. . Measure 5 times the jee Annexe E. QIA Copyright Association Europeene des Construc
36、teurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN20b 89 3032333 0003754 7 -Ill _ - - prEN 2067 Page 7 0,5625 H ) - No dscontinuity in this area i) See IS0 5855/1 Figure 1 - Di sconti nu
37、i ties on crest of thread 0.5625 H “ No discontinuity in this area Area where discontinuities not exceeding 0,113 H are tolerated i) See. IS0 585511 2) See IS0 5855/2 Figure 2 - Discontinuities on thread flank Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS
38、under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 1 AECMA PREN2067 49 W LOL23LL 0003955 - O W I .- prEN 2067 Page 8 5 Quality assurance 5.1 Approva I of manufacturer See EN 2000 5.2 Product qualiflcatlon See fables 2 and 3. The manufacturer
39、shall obtain qualification for each type of rod end and for all the dimensions indicated In the Standards referred to in Section 2. 6 Acceptance conditions 6.1 The manufactureris responsibility See EN 2000 6.2 Inspections and tests to be carried out by +he manufacturer The acceptance of a del v,ery
40、batch chal I be in accordance with Table 4 except that the sample plan may be varied with the approval of the customer or authority responsible for acceptance. 6.3 Customer quality control The customer may, on acceptance of a delivery batch, proceed to inspect it by using the inspections specified i
41、n Table 4, in full or in part, to ensure that the items conform to the required quality levei, and to determine whether the consignment is acceptable. This inspection can be carried out in the customers factory, or, by special agreement, in the manufacturers factory. 7 Packaging The rod ends shall b
42、e packaged indlvidually and in such a way that they will not be damaged during transportation. They shall be protected against moisture, corrosion, dlrt and other harmful substances, The packaging material in contact with the rod end shall provide This protection and be grease-res i stant The follow
43、ing indications shall be affixed to each individual package: - Manufacturerls name and address - Identity block as defined by product standards - Packaging date - Lubrication date. The following indications at least must appear on collective packaging: - Manufactureris name and address - Number of c
44、ontract or order - Number of items - Identity block as defined by the product standards. 8. Certif cate of conformity All the rod ends supplied in accordance with this Standard shall be accompanied by a certificate of conformity from the manufacturer. Copyright Association Europeene des Constructeur
45、s de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-e. o AECMA PREN2067 89 W 3032333 _ - 0003956 2 W _- 1 . prEN 2067 Page 9 Table 2 - Non-destructive inspections and tests to be carried out for qualific
46、ation Interna I c I earances : 1) The order of the non-destructive inspections and tests is left to the nitiative of the qualification authority. Table 3 - Destructive inspections and tests to be carried out for qualification Surface roughness rhread discontinuities (inspection on micrographic jecti
47、 on 14.7 -I i I i I XIXI I j4.9 IxIxi I I I I! I rest under static lo 1) The order of the inspections and tests is lef-f. to the initiative of the qualification 2) A minimum of 3 roiling elements shal I be inspected. 3) These tests shall be carried out only on the first nominal size of each type of
48、rod authority. end submitted for qualification. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I i AECMA PREN2067 87 W LOL23LL 0003957 4 a prEN 2067 P
49、age 10 Table 4 - Inspections and tests to be carried out for acceptance Yateri a Is Dimensions and tolerances I 4*2 Surface roughness Surf ace treatment 1 4.8 Thread discontinuities 4.9 Grooves 4.10 Lubrication Retention of seals and shields I 4.12.1 Internal clearances (Gr, Ga) I 4.13 Running behaviour at ambient temperature 4.1
