prEN 12082-1

SLOVENSKI STANDARD
01-november-2024
Železniške naprave - Ohišja ležajev kolesnih dvojic - Preskusni postopki
Railway applications - Axleboxes - Test procedures
Bahnanwendungen - Radsatzlager - Teil 1: Prüfverfahren
Applications ferroviaires - Boîtes d'essieux - Méthodes d’essai
Ta slovenski standard je istoveten z: prEN 12082-1
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2024
ICS Will supersede EN 12082:2017+A1:2021
English Version
Railway applications - Axleboxes - Test procedures

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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-CENELEC
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12082-1:2024 E
worldwide for CEN national Members.

Contents Page
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 9
5 Tightness test . 10
5.1 Water tightness test . 10
5.2 Test specification . 10
6 Rig performance test . 11
6.1 General. 11
6.2 Test specification . 11
6.3 Test execution . 12
6.3.1 Test rig . 12
6.3.2 Test parameters . 13
6.4 Carrying out the test . 14
6.4.1 Pre-test . 14
6.4.2 Performance test . 15
6.5 Acceptance criteria. 15
6.5.1 Results obtained during the test . 15
6.5.2 Results obtained after the test . 16
6.6 Performance test report . 16
7 Field test . 17
7.1 General. 17
7.2 Test specification . 17
7.3 Carrying out the test . 17
7.4 Test parameters . 18
7.5 Results to be obtained during and after field test . 18
7.6 Field test report . 19
Annex A (normative) Rig performance test . 20
Figure A.1 — Schematic example of test rig with fans . 20
Figure A.2 — Schematic example of test rig with ducted air flow . 21
Figure A.3 — Positions of axlebox temperature sensors . 22
Figure A.4 — Grease sampling zones (example of an axlebox with a set of tapered roller
bearings) . 23
Figure A.5 — Graphical representation of test cycles . 26
Annex B (informative) Sequenced performance tests . 32
Figure B.1 — Schematic example of pre-test and sequenced performance test for a High
Speed Train . 33
Figure B.2 — Schematic example of pre-test and sequenced performance test for a passenger
train . 34
Figure B.3 — Schematic example of pre-test and sequenced performance test for a freight
train . 36
Figure B.4 — Schematic example of pre-test and sequenced performance test for a peri-
urban train . 37
Annex C (informative) Water tightness test . 38
Figure C.1 — Water tightness test - principle sketches . 41
Figure C.2 — Water tightness test - principle sketches . 42
Annex D (informative) Temperature evaluation examples . 43
Figure D.1 — Simplified example criterion A . 43
Figure D.2 — Simplified example criterion B . 44
Figure D.3 — Simplified example criterion C . 44
Figure D.4 — Simplified example criterion D . 45
Figure D.5 — Simplified example criterion E1 . 45
Bibliography . 46

European foreword
This document (prEN 12082-1:2024) has been prepared by Technical Committee CEN/TC 256 “Railway
Applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12082:2017+A1:2021.
EN 12082-1 includes the following significant technical changes with respect to
EN 12082:2017+A1:2021:
— Document split into EN 12082-1 on Test procedures and EN 12082-2 on Deployment procedure
— EN 12082-1 contains requirements for tests which are referred to in EN 12082-2 as part of the
axlebox deployment procedure. These test requirements focus on test preparation, test execution
and post-test actions including the test report. Main addressees of EN 12082-1 are testing institutes
which carry out the tests.
— Requirements on test specifications and test reports are revised and separated for each test
— Tightness tests is now mentioned with water tightness test as one example
— Modified requirements on water tightness test with respect to test procedure and test conditions
— Saddle adapter added as possible housing design to overview of common axlebox designs as possible
housing design
— Modifications to rig performance test with respect to results obtained after the test, definition of
grease sampling areas, test report and test procedure
— Modifications to field test requirements with respect to acceptance criteria
This series of European standards Railway applications – Axleboxes consists of:
— EN 12080, Railway applications — Axleboxes — Rolling bearings
— EN 12081, Railway applications — Axleboxes — Lubricating greases
— EN 12082-1, Railway applications — Axleboxes — Test procedures
— EN 12082-2, Railway applications — Axleboxes — Deployment procedure
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
Introduction
This document has been drawn up with the purpose of standardizing component integration and the
performance testing of axleboxes for rolling stock to ensure suitability for the required service, i.e. that
the assembly of box housing, bearing(s), seal(s) and grease is well suited for the service requirements.
This axlebox performance testing is made in two stages, a “rig test”, described in detail in this document,
and a “field test”. The extent of testing to be applied depends on the novelty of bearing design, seal design,
grease formulation and/or box housing, as well as the application.
The second part of this European standard comprises requirements for the deployment with respect to
design parameters of the axlebox and its components. This dedicated part of the standard is introduced
to comply with CEN regulations regarding conformity assessment and mainly consists of clauses and
requirements that were part of EN 12080 and EN 12081 before.
1 Scope
This docuemnt specifies the principles and methods for a rig performance test of the system of axlebox
rolling bearing(s), housing, seal(s) and grease, required for reliable operation of trains on European
networks. It covers a rig performance test, a water tightness test and basic principles for a field test. Test
parameters and minimum performance requirements for vehicles in operation on main lines are
specified. Different test parameters and performance requirements may be selected for vehicles in
operation on other networks (e.g. urban rail). This document is historically developed for outboard
applications with rotating inner rings, but can be used for vehicles with inboard bearing arrangements.
It gives some possible examples where a sequenced rig performance test addresses the broad range of
different service conditions within a specific application or vehicle platform into account.
It describes compatibility tests of components
...