1、AECMA STANDARD prEN 3059 NORME AECMA Edition P 2 AECMA NORM December 2001 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 8110 - Fax. (+32) 2 775 81 11 Supersedes edition P 1 ICs: 49.035 April 1994 Editi
2、on approved for publication Descriptors: Comments should be sent within six months after the date of Dublication to Mechanical Domain ENGLISH VERSION 2001-1 2-28 Aerospace series Bearings, airframe rolling Rigid single row ball bearings in steel with flanged alignment housing, cadmium plated Dimensi
3、ons and loads Mr Feltham I AECMA-STAN Gulledelle 94 8-1200 BRUXELLES Srie arospatiale Luft- und Raumfahrt Roulements pour structures daronefs Flugwerklager Roulements en acier, rigides, une range de billes, avec bague dalignement collerette cadmie Dimensions et charges Einreihige Rillenkugellager au
4、s Stahl mit selbsteinstellendem Flansch, verkadme Mae und Belastungen This “Aerospace Series Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospa
5、ce Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-ident
6、ification of the standard. Affer examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draff European Standard to CEN European Committee for Standardization) for formal vote. aecrna 200 Page 2 prEN 3059: 2001 Blank page Page 3 prEN 3059: 2001 1 Scope This stand
7、ard specifies the characteristics of rigid single row ball bearings in steel, with cadmium-plated flanged alignment housing designed to withstand only slow rotations and oscillations under load. They are intended for use in the hubs of torsion lever and in separated supports. The airframe rolling be
8、arings defined in this standard may be used in the temperature range from - 54 “C to 150 “C. However, being lubricated with the following greases (see EN 3727): - ester type very high pressure grease (code letter A), operating range from - 73 “C to 121 “C or, - synthetic hydrocarbons type very high
9、pressure grease general purpose (code letter B) operating range from - 54 “C to 177 “C. Their field of application when lubricated with code letter A grease is limited to 121 OC. 2 Norma tive reference This European Standard incorporates by dated or undated reference provisions from other publicatio
10、ns. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. Fo
11、r undated references, the latest edition of the publication referred to applies. IS0 1132-1 EN 2031 EN 2133 EN 2221 EN 2222 EN 2249 EN 2424 EN 3727 Rolling bearings - Tolerances - Part 1 : Terms and Definitions Steel FE-PL31 - Hardened and tempered - Bars - Aerospace series 1) Aerospace series - Cad
12、mium plating of steels with specified tensile strength I 1 450 MPa, copper, copper alloys and nickel alloys Steel FE-PL31 - Hardened and tempered - Hollow bars 33 mm I a I 55 mm - Aerospace series 1) Steel FE-PL31 - Hardened and tempered - Hand and die forgings -Aerospace series 1) Aerospace series
13、- Steel FE-PL52S - R,2 690 MPa - Bars De I 250 mm 2) Aerospace series - Marking of aerospace products Aerospace series - Bearings, airframe rolling, rigid, with flanged alignment bush - Technical specification 3) TR 4475 Aerospace series - Bearings and mechanical transmissions for airframe applicati
14、ons - Vocabulary 4) 1) Published as AECMA Standard at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published as AECMA Prestandard at the date of publication of this standard 4) Published as AECMA Technical report at the date of publication
15、 of this standard Page 4 prEN 3059: 2001 3 Symbols, terms and definitions For the purposes of this standard, the terms and definitions given in IS0 1132-1 and TR 4475 apply. The following symbols are used: single plane mean bore diameter deviation deviation of a single bore diameter permissible stat
16、ic radial load permissible static axial load axial internal clearance radial internal clearance assembled bearing inner ring face runout with raceway assembled bearing outer ring face runout with raceway radial runout of assembled bearing inner ring radial runout of assembled bearing outer ring Requ
17、ired characteristics Dimensions - Clearances - Masses Configuration and values: according to figures 1 to 4 and table 1 ; the bearings can be fitted with either seals or shields. The dimensions and tolerances are expressed in millimetres and apply after surface treatment. u a In both positions at 18
18、0 O from the bearing Figure 1 Page 5 prEN 3059: 2001 O Figure 2 - Solid flanged alignment housing, code letter C Type with shields code letter P I O I /I c a Transition area at the manufacturers discretion Figure 3 - Light weight flanged alignment housing, code letter D Type with seals code letter E
19、 NOTE 1 Installation of seals and shields is at the manufacturers option. NOTE 2 The shields shall not extend beyond width C. Figure 4 a Page 6 prEN 3059: 2001 2 to 6 83 113 Table I aP Masses glpieces Code Code - min.a f 1“ letter C letter D 4“ O“ 47 38 330 62 50 3“ 70 58 2“30 94 78 2“20 1 O0 86 7“
20、12“ e 155 129 210 178 130 I internai clearances Pm Runout tolerances rnax. Pm rilting torque N.m Starting torque rnax. mN.m d Radial G, Code lumber ia1 Kea A Sia Ra Ka Axial max. Ga II Sea 16 3to11 20 0,8 to 3 25 32 120 40 40 25 40 35 40 5to13 1,3 to 4,5 I*- 45 50 1,5 to 5 I 48 I 68 63 a Maximum val
21、ues for the user SeeEN 3727. Page 7 prEN 3059: 2001 Axial Radial 0,l mm 0,15 mm 0,2 mm 15.2 13 1,27 1.2 I ,75 2,13 1,72 2,08 1.67 2 1,75 I 2,44 3,13 32,4 1.68 2.37 3.03 I 35.3 0,92 1,11 1,29 4.2 Loads See tables 2 and 3. Table 2 - Loads for bearings with code letter C alignment housing cs Fa max t +
22、 Fa max f d Code number for a displacement of max.: 0,l mm I 0,15 mm I 0,2rnm 16 20 25 32 35 40 45 50 I I I 23 63 1.16 I 1.46 I 1.78 I 39.2- a Axial and radial loads may be applied simultaneously. For ultimate static loads, see EN 3727. Table 3 - Loads for bearings with code letter D alignment housi
23、ng Permissible static loads a kN Axial Radiai cs t Fa max f f + Fa max d Code number - 16 20 25 32 35 40 * for a displacement of max.: 0,l mm 0,15 mm 0,2 mm for a displacement of max.: 0,l mm 0,15 mrn 0,2 mm 1,32 1,71 2,06 152 18,7 20.6 0,92 1,29 1,56 24.5 25,5 29,5 32,4 35,3 39,2 Io6 I 1,37 I 1,57
24、45 50 63 - I 0.99 1.17 1 1,18 a Axial and radial loads may be applied simultaneously. For ultimate static loads, see EN 3727. Page 8 prEN 3059: 2001 4.3 Surface roughness Raceways and rolling elements: Ra = 0,2 pm Bore, side faces of the bearing and bearinglhousing swivelling surface: Ra = 0,8 pm Em
25、bedding diameter and support face of the housing: Ra = 1,6 pm General state: Ra = 3,2 pm The values apply prior to cadmium plating. 4.4 Materials Flanged alignment housing: according to EN 2249, 900 MPa to 1 100 MPa Inner ring : Outer ring : Balls : Shields : corrosion resisting material Seals : pol
26、ytetrafluoroethylene (PTFE) or polytetrafluoroethylene (PTFE) reinforced with fibreglass. according to EN 2031 or EN 2221 or EN 2222,59 HRC to 64 HRC according to EN 2031 or EN 2221 or EN 2222,59 HRC to 64 HRC according to EN 2031, 59 HRC to 64 HRC 4.5 According to EN 2133 Thickness I O pm to 20 pm;
27、 internal spherical diameter is not cadmium plated. As soon as possible after plating, and within 16 h, de-embrittlement heat treatment shall be carried out at a temperature and for a time (compatible with the performance requirements of the bearing) which shall be subject to written approval of the
28、 qualifying authorities. Surface treatment of the bush 5 Designation EXAMPLE : Description block Identity block BEARING Number of this standard Code letter for grease type (see clause 1) Diameter code number of d (see table 1) Type code letter (see figure 4) Alignment housing code letter (see figures 2 and 3) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 6 Marking According to EN 2424, category A Marking position and method are at the manufacturers option. 7 Technical specification According to EN 3727
