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. AECMA PREN2067 89 LOL23Ll OOOL71.19 5 m prES 2067 Page 2 Con tents 1 Scope and field of application 2 References 3 Def ini
7、tions 4 Required characteristics, inspections and test methods 5 Quality assurance 6 Acceptance condi t 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 Ann
8、exe E Verification of permissible and ultimate static loads Annexe F Lubricants for rod ends with self-aligning ball bearings - essen t i a I ch aracteri st i cs prEN 2067 Page 3 1 Scope and field of application This Standard specifies the required characteristics, Inspections and tests, quality ass
9、urance, 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 Standard appl es to al I rod ends with self-al igning bal I bearings, i.e,EN 2492 and . EN 3541 .
10、 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 constructions - MJ Thread - Part 2 : Limit dimensions for nuts and bolts EN 2000 and supply of
11、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 loads. , Aerospace series - Quality assurance requirernTqts for the manufacture , Rod ends wi
12、th 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 circular safety groove, which may have a longitudinal groove for the locking device. 3.2 Surface d
13、iscontinu 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 rolled or forged into the surface. - Seam: Unwelded fold which appears as an open 3.3 internal cl
14、earances 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 radial displacements of the inner ring in relation to the rod end. (Ga) Total value of possible a
15、xil 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 batch ion to the body the body of the This consfsts of rod ends with the same identity block,
16、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, j AECMA PREN20b7 89 1012311 0001951 3 prEN 2067 Page 4 4 Required characteristics, inspections an
17、d test methods 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
18、 with product 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.
19、 It shall 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. chara
20、cteristics 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 su
21、rface treatment 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. 4.12 .12. ,*12. .12. - Requ irements Thread tapping shal I con- form wit
22、h product stan- dards. - No discontinuity below effective diameter . - Discontinuities not to exceed 20% of height 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 met
23、hods Q Visual examination X Examinati37 of micrographic X section : - for qualification: on finished parts - for 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 b
24、e fitted correctly on the rod end body, in such a way that the func- tioning of the self-ai igning bai I bearing 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 na
25、fi on See Annexe A sea I ing The seals shal I: - rub on the inner ring and re-hin the grease, - prevent the penetration 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. rempe
26、rature test Visual examination after the X inner ring Is turned manual ly in relation to the body of the rod end. 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 stand
27、ards. Visual and threaded gauge I I Visual examination during manufacture. X 1)These checks shal I be made in the absence of any surface treatment which, for qualification purposes, may be removed by a chemical process. Q 7 AECMA PRENZOb7 89 L0323LL 0003753 7 W prES 2067 Page 6 Table 1 (concluded) 4
28、.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: - axial : Fa max CS UI timate static loads - radial - axial Requirements hall conform
29、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 standards. ;ha1 I conform with product itandards. fter the removal of the oads, no permane
30、nt 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 clearance by more than 15 pm. ifter the removal of the ,oads, no fractures or :racks. Inspect
31、ions 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 at least 4 times to distribute the lubricant evenly, torque appl ied gradually to th
32、e 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 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
33、 1 - Di sconti nu 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 1 1 AECMA PREN2067 49 W LOL23LL 0003955 - O W I .- prEN 2067 Page 8 5 Qu
34、ality assurance 5.1 Approva I of manufacturer See EN 2000 5.2 Product qualiflcatlon See fables 2 and 3. The manufacturer 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
35、responsibility See EN 2000 6.2 Inspections and tests to be carried out by +he manufacturer The acceptance of a del v,ery 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 qualit
36、y control The customer may, on acceptance of a delivery batch, proceed to inspect it by using the inspections specified in 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 carri
37、ed out in the customers factory, or, by special agreement, in the manufacturers factory. 7 Packaging The rod ends shall be 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 substanc
38、es, The packaging material in contact with the rod end shall provide This protection and be grease-res i stant The following indications shall be affixed to each individual package: - Manufacturerls name and address - Identity block as defined by product standards - Packaging date - Lubrication date
39、. The following indications at least must appear on collective packaging: - Manufactureris name and address - Number of contract 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 sh
40、all be accompanied by a certificate of conformity from the manufacturer. 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 qualification Interna I c I earances : 1) The order of the non-destructive inspectio
41、ns 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 on 14.7 -I i I i I XIXI I j4.9 IxIxi I I I I! I rest under static lo 1) The
42、 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 rod authority. end submitted for qualification. I i AECMA PREN2067 87 W LOL2
43、3LL 0003957 4 a prEN 2067 Page 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 (G
44、r, Ga) I 4.13 Running behaviour at ambient temperature 4.14.1 Starting torques at zero load 4.15 Sampl ing plan 2) Certificate OP semi-fini- shed products manufacturei Thread : 100% Rest of rod end: 10% 100% 100% - After rnanufacturerrs heat treatment: 100% - Material used as deli- vered: rio inspix
45、tion. 5% 1 per cadmium-plated batcl 1% or 1 part if 1 0001763 T- prEN 2067 Page 16 Annexe E Verlf cation of permissible and u1 timate static loads El Permissible radial static loads (CS) El .1 Principle See Figure 6. E1.2 Method - Mount the rod end as shown in Figure 6 (the inner ring shall be eble
46、to turn free ly by hand - Apply load C - Maintain it Sor I minute - Remove the load - Turn the inner ring manual ly - Check the running behaviour - Measure the radial clearance, gradually at the rate of 1% per second E2 Ultimate radial static loads This test follows that specified in El. E2.1 Princi
47、ple See Figure 6. E2.2 Method - Mount the rod end as shown in Figure 6 (the inner ring shall be able to turn free- - Apply a radial load of 1.5 C, gradually at the rate of 1% per second - Maintain it for 1 minute - Remove the load - Check the rod end. ly by hand) E3 E3.1 Principle See Figure 7. E3.2
48、 Method - Mount the rod end as shown in Figure 7 - Apply the load F - Maintain it for 7 minute - Remove the load - Rotate the inner ring manual ly - Check the running behavi-our - Measure the axial clearance, Permissible axial static loads (Fa max,) max. gradual ly at the rate of .I% per second 4 Ul
49、timate axial static loads This test fol lows the E3 test. E4.1 Principle See Figure 7. 4.2 Method - Mount the rod end as shown in Figure 7 - Apply an axial load of 1.5 Fa max. gradually at the rate of 1% per second - Maintain it for 1 minute - Remove the load - Check the rod end. I AE CMA PREN20b 89 LOL231L 00019611 L =& prEN 2067 Page 17 Annexe E (continued) 1 I ! 1 I II t I Rod end 4“ Figure 6 Man drs I Fa rnax. Self-al igning bal I bearing /- Figure 7 L - AECMA PREN2067 84 m 10L23LL 00039
