Bsi bs en 04538 003 2010

Unknown raising standards worldwide™ NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS EN 4538 003 2010 Aerospace series — Bearings, spherical plain,[.]

raising standards worldwide™

NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW

BSI Standards Publication

Aerospace series — Bearings, spherical plain, in corrosion resisting steel with

self-lubricating liner elevated load under low oscillations — Narrow series — Dimensions and loads

Part 003: Inch series with low friction coefficient

`,,```,,,,````-`-`,,`,,`,`,,` -This British Standard is the UK implementation of EN 4538-003:2010 The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems

A list of organizations represented on this committee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

© BSI 2010 ISBN 978 0 580 58635 4 ICS 49.035

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2010

Amendments issued since publication

Date Text affected

Copyright British Standards Institution

Provided by IHS under license with BSI - Uncontrolled Copy

`,,```,,,,````-`-`,,`,,`,`,,` -NORME EUROPÉENNE

EUROPÄISCHE NORM November 2010

ICS 49.035

English Version Aerospace series - Bearings, spherical plain, in corrosion resisting steel with self-lubricating liner elevated load under low oscillations - Narrow series - Dimensions and loads - Part 003:

Inch series with low friction coefficient

Série Aérospatiale - Rotules, en acier résistant à la corrosion à garniture autolubrifiante à charge élevée sous

faibles oscillations Série étroite Dimensions et charges

-Partie 003 : Série en inches avec coefficient bas de friction

Luft- und Raumfahrt - Gelenklager, aus korrosionsbeständigem Stahl mit selbstschmierender Beschichtung Hohe Belastung ohne Montagenut - Schmale Reihe - Maße und Belastungen - Teil 003: Inch Reihe mit

niedrigen Reibungskoeffizienten

This European Standard was approved by CEN on 30 July 2010

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member

This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E FÜ R N O R M U N G

Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2010 CEN All rights of exploitation in any form and by any means reserved

worldwide for CEN national Members

Ref No EN 4538-003:2010: E

`,,```,,,,````-`-`,,`,,`,`,,` -2

Foreword 3

1 Scope 4

2 Normative references 4

3 Symbols and definitions 4

4 Required characteristics 5

5 Designation 11

6 Marking 11

7 Technical specification 11

Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy

`,,```,,,,````-`-`,,`,,`,`,,` -3

Foreword

This document (EN 4538-003:2010) has been prepared by the Aerospace and Defence Industries Association

of Europe - Standardization (ASD-STAN)

After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2011, and conflicting national standards shall be withdrawn at the latest by May 2011

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom

`,,```,,,,````-`-`,,`,,`,`,,` -4

1 Scope

This standard specifies the characteristics of bearings, spherical plain in corrosion resisting steel with self-lubricating liner, elevated load under low oscillations, with low friction coefficient, narrow series, inch series They shall be used in the temperature range – 54 °C to 120 °C

2 Normative references

The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies

EN 2030, Steel FE-PM43 — Hardened and tempered — Bars D ≤ 150 mm — Aerospace series 1)

EN 2133, Aerospace series — Cadmium plating of steels with specified tensile strength ≤ 1 450 MPa, copper, copper alloys and nickel alloys

EN 2424:2008, Aerospace series — Marking of aerospace products

EN 3161, Aerospace series — Steel FE-PM3801 (X5CrNiCu17-4) — Air melted — Solution treated and

precipitation treated — Bar — a or D ≤ 200 mm — R m≥ 930 MPa

EN 4540, Aerospace series — Bearings, spherical plain, in corrosion resisting steel with self-lubricating liner —

Elevated load under low oscillations — Technical specification 2)

ISO 1132-1:2000, Rolling bearings — Tolerances — Part 1: Terms and definitions

TR 4475, Aerospace series — Bearings and mechanical transmissions for airframe applications — Vocabulary 3)

AMS-QQ-C-320, Chromium Plating (Electrodeposited) 4)

3 Symbols and definitions

For the purposes of this document, the symbols and definitions given in ISO 1132-1:2000 and the following apply

α = Maximum angle of tilt of the outer ring with respect to the inner ring, with the spherical surface of

the outer ring being completely in contact with the inner ring

Ca = Permissible static axial load

Cs = Permissible static radial load

1) Published as ASD-STAN Standard at the date of publication of this standard by Aerospace and Defence Industries Association of Europe-Standardization (ASD-STAN) (www.asd-stan.org)

2) Published as ASD-STAN Prestandard at the date of publication of this standard by Aerospace and Defence Industries Association of Europe-Standardization (ASD-STAN) (www.asd-stan.org)

3) Published as ASD-STAN Technical Report at the date of publication of this standard by Aerospace and Defence Industries Association of Europe-Standardization (ASD-STAN) (www.asd-stan.org)

4) Published by: Society of Automotive Engineers (SAE) (www.sae.org)

Copyright British Standards Institution

Provided by IHS under license with BSI - Uncontrolled Copy

`,,```,,,,````-`-`,,`,,`,`,,` -5

C250 = Permissible dynamic radial load by 250 000 cycles

∆dmp = Single plane mean bore diameter deviation

∆Dmp = Single plane mean outside diameter deviation

∆ds = Deviation of a single bore diameter

∆Ds = Deviation of a single outside diameter

The definition and vocabulary, see TR 4475

4 Required characteristics

4.1 Configuration, dimensions, tolerances and mass

See Figures 1 and 2 and Table 1 The dimensions are expressed in millimetres and apply after surface treatment

4.2 Surface roughness

See Figures 1 and 2 The values are expressed in micrometres and apply before surface treatment

`,,```,,,,````-`-`,,`,,`,`,,` -6

a TFE liner

b Cadmium plated

c Set back

d Spherical diameter

Figure 1 — Bearing without swaging grooves, code “S”

Copyright British Standards Institution

Provided by IHS under license with BSI - Uncontrolled Copy

`,,```,,,,````-`-`,,`,,`,`,,` -7

a Set back

b Swaging groove

c TFE liner

d Cadmium plated

e Spherical diameter

Figure 2 — Bearing with swaging grooves, code “R”

`,,```,,,,````-`-`,,`,,`,`,,` -8

Table 1 — Dimensions, tolerances and mass

Diameter

code a

Diameter

d D Limit deviation B C d1 K N

∆ dmp ∆ ds ∆ Dmp ∆ Ds 0

− 0,06 ± 0,1 min Ref + 0,1

− 0,2

03 4,826 14,287

0

− 0,013

0

− 0,013

0

− 0,013 + 0,003

− 0,015

7,14 5,54 7,442 10,31 12,70

04 6,350 16,667 8,71 6,35 9,245 12,70 15,09

05 7,937 19,050 9,53 7,14 10,642 14,28 16,51

06 9,525 20,637 10,31 7,93 12,065 15,88 18,08

07 11,113 23,017 11,10 8,71 13,462 17,50 20,47

08 12,700 25,400 12,70 9,91 15,240 19,84 22,25

09 14,288 27,780 14,28 11,10 17,018 22,23 24,64

10 15,875 30,163 15,88 12,70 18,770 24,59 27,00

12 19,050 36,513 19,05 15,06 23,368 30,15 33,35

14 22,225 39,687 22,23 17,86 24,892 33,30 36,53

16 25,400 44,450

+ 0,003

− 0,015

25,40 20,24 28,397 38,10 41,30

20 31,750 50,800 27,76 23,93 36,703 45,24 47,70

24 38,100 61,912 33,32 28,83 47,500 57,15 58,85

28 44,450 71,437 38,89 33,45 50,710 64,00 68,33

Diameter

code a

Mass

g/piece

U r1 r2 r3 r4 α b θ1 θ2 P T

max max min ± 0,5° ± 0,5° 0

− 0,25 max ≈

03

0,12

0,127

to 0,381

0,13

to 0,25

0,254

to 0,508

0,12

10°

30°

20° 0,70

0,8 9

04

05

0,25

to 0,43

30°

0,90

14

06

0,508

to 0,762

9°

0,9

18

07

8°

22

08

1,40

31

09

1,0 40

12

0,762

to

95

16

0,25

To 0,51

9° 176

20

6° 1,50

240

a The diameter code corresponds to bore diameter d in 1/16 inch

b The acceptance value is the maximum value for the user

Copyright British Standards Institution

Provided by IHS under license with BSI - Uncontrolled Copy

`,,```,,,,````-`-`,,`,,`,`,,` -9

4.3 Loads and starting torques

See Table 2

Table 2 — Loads and starting torques

Diameter code

Static limit loads a

kN

Dynamic radial loads

250 000 cycles b

Projected surface area c Starting

torques

Radial d

Cs

Axial e, f

0,11 to 0,90

0,23 to 1,50

a Definition and testing for permissible and ultimate static loads according to EN 4540

b Permissible surface pressure 100 MPa

c The projected surface area values are given to determine for each bearing size the duty cycle loads

d Permissible surface pressure 344 MPa

e These values apply to bearings without swaging groove For installed bearings with swaging groove, the push-out loads may be

smaller than these values

f Permissible surface pressure 138 MPa

`,,```,,,,````-`-`,,`,,`,`,,` -10

4.4 Materials

Inner ring: steel EN 2030, hardness 55 HRC to 62 HRC

Outer ring: steel EN 3161, hardness 28 HRC to 37 HRC before swaging

Liner: self-lubricating low friction, wear resistant material consistent with the requirements of EN 4540

4.5 Surface treatment

Without code: ball (inner ring) chrome plated on spherical diameter per AMS-QQ-C-320 class 2

Code Z: cadmium plating on outer race per EN 2133

Without swaging groove

Code S: ball (inner ring) chrome plated on spherical diameter per AMS-QQ-C-320 class 2, min 8 µm

to 13 µm thick Cadmium plating of outer ring: 5 µm to 8 µm (0,2 µin to 0,3 µin) according to

EN 2133 Cylindrical surface area and chamfers and both end surfaces at manufacturer’s option, followed by chromating

Swaging groove

Code R: ball (inner ring) chrome plated on spherical diameter per AMS-QQ-C-320 class 2, min 8 µm to

13 µm thick Cylindrical surface area, broken angles and radii, respectively, as well as both end surfaces up to the swaging grooves, followed by chromating

4.6 Low friction coefficient

See Table 3

Table 3 — Low friction coefficient Friction

coefficient a Temperature

range Bearing pressure range

µ

a The proof of the value of friction coefficient has to be furnished for the new bearing and after completion to lead the life time test

Copyright British Standards Institution

Provided by IHS under license with BSI - Uncontrolled Copy

`,,```,,,,````-`-`,,`,,`,`,,` -11

5 Designation

EXAMPLE

Description block BEARING

Identity block EN4538-003R04AZ

Number of this standard

Swaging groove code (see Figures 1 and 2)

Diameter code (see Table 1)

Technology code

Surface treatment code (see 4.5)

(Code or without code)

Where the following technology codes are applied:

– Code A, bonded liner technology;

– Code B, injected or moulded liner technology;

– Without code, both technologies can be used at user’s convenience

NOTE If necessary, the code I9005 shall be placed between the description block and the identity block

6 Marking

EN 2424:2008, style A

7 Technical specification

EN 4540

`,,```,,,,````-`-`,,`,,`,`,,` -This page deliberately left blank

Copyright British Standards Institution

Provided by IHS under license with BSI - Uncontrolled Copy

This page deliberately left blank

It presents the UK view on standards in Europe and at the international level

It is incorporated by Royal Charter

raising standards worldwide™

BSI Group Headquarters

389 Chiswick High Road London W4 4AL UK

Tel +44 (0)20 8996 9001

Fax +44 (0)20 8996 7001

www.bsigroup.com/standards

Revisions

British Standards are updated by amendment or revision Users of British

Stan-dards should make sure that they possess the latest amendments or editions.

It is the constant aim of BSI to improve the quality of our products and

serv-ices We would be grateful if anyone finding an inaccuracy or ambiguity while

using this British Standard would inform the Secretary of the technical

com-mittee responsible, the identity of which can be found on the inside front

cover.

Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001

BSI offers Members an individual updating service called PLUS which ensures

that subscribers automatically receive the latest editions of standards.

Tel: +44 (0)20 8996 7669 Fax: +44 (0)20 8996 7001

Email: plus@bsigroup.com

Buying standards

You may buy PDF and hard copy versions of standards directly using a

credit card from the BSI Shop on the website www.bsigroup.com/shop.

In addition all orders for BSI, international and foreign standards publications

can be addressed to BSI Customer Services.

Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001

Email: orders@bsigroup.com

In response to orders for international standards, it is BSI policy to

supply the BSI implementation of those that have been published

as British Standards, unless otherwise requested.

Information on standards

BSI provides a wide range of information on national, European and international standards through its Knowledge Centre.

Tel: +44 (0)20 8996 7004 Fax: +44 (0)20 8996 7005 Email: knowledgecentre@bsigroup.com

Various BSI electronic information services are also available which give details on all its products and services

Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsigroup.com

BSI Subscribing Members are kept up to date with standards developments and receive substantial discounts on the purchase price

of standards For details of these and other benefits contact Membership Ad-ministration

Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsigroup.com

Information regarding online access to British Standards via British

Standards Online can be found at www.bsigroup.com/BSOL Further information about BSI is available on the BSI website at www.bsi-group.com/standards

Copyright

Copyright subsists in all BSI publications BSI also holds the copyright,

in the UK, of the publications of the international standardization bodies Ex-cept as permitted under the Copyright, Designs and Patents Act 1988 no ex-tract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission

of BSI must be obtained Details and advice can be obtained from the Copy-right & Licensing Manager.

Tel: +44 (0)20 8996 7070 Email: copyright@bsigroup.com

Copyright British Standards Institution

Provided by IHS under license with BSI - Uncontrolled Copy