EN 12080:2017+A1:2022

SLOVENSKI STANDARD
01-november-2022
Železniške naprave - Ohišja ležajev kolesnih dvojic - Kotalni ležaji (vključno z
dopolnilom A1)
Railway applications - Axleboxes - Rolling bearings
Bahnanwendungen - Radsatzlager - Wälzlager
Applications ferroviaires - Boîtes d'essieux - Roulements
Ta slovenski standard je istoveten z: EN 12080:2017+A1:2022
ICS:
21.100.20 Kotalni ležaji Rolling bearings
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.

EN 12080:2017+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 21.100.20; 45.040 Supersedes EN 12080:2017
English Version
Railway applications - Axleboxes - Rolling bearings
Applications ferroviaires - Boîtes d'essieux - Bahnanwendungen - Radsatzlager - Wälzlager
Roulements
This European Standard was approved by CEN on 19 June 2017 and includes Amendment 1 approved by CEN on 6 June 2022.

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-CENELEC 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-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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12080:2017+A1:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Technical specification . 11
4.1 General requirements . 11
4.2 Technical specification content . 11
5 Quality systems . 12
6 Manufacture . 12
6.1 Steel manufacturing . 12
6.2 Heat treatment . 12
6.3 Traceability . 13
6.4 Coatings . 14
6.4.1 General . 14
6.4.2 Permanent coating. 14
6.4.3 Non-permanent coating . 14
7 Material properties . 14
7.1 General . 14
7.2 Steel for rings and rolling elements . 14
7.2.1 Grades. 14
7.2.2 Inclusion content . 15
7.3 Materials of other components (cages, spacers, seals etc.) . 15
8 Geometry and dimensions . 15
8.1 Dimensions and tolerances . 15
8.2 Rolling bearing internal clearance . 15
8.2.1 Rolling bearing clearance before mounting . 15
8.2.2 Rolling bearing clearance after mounting . 16
9 Mechanical properties — inner ring expanding ability . 16
10 Physical properties . 16
10.1 Visual aspect . 16
10.1.1 Rings and rolling elements . 16
10.1.2 Cages . 16
10.2 Soundness of rings and rolling elements . 16
10.2.1 General rules . 16
10.2.2 Internal soundness of rings . 17
10.2.3 Soundness of ring surfaces . 17
10.2.4 Soundness of roller raceway surfaces . 17
10.2.5 Grinding burns . 17
10.3 Case depth . 17
10.4 Surface hardness . 18
11 Marking . 18
11.1 General . 18
11.2 Marking of rings for cylindrical roller bearings (CRB) . 19
11.3 Marking of cartridge bearings for axleboxes. 19
11.4 Marking of spherical roller bearings (SRB) . 20
11.5 Prefix and postfix . 20
12 Inspection . 20
12.1 Inspection plan . 20
12.2 Sampling . 21
13 Quality records . 22
14 Approval . 22
15 Delivery and packing . 22
15.1 Greasing of rolling bearings . 22
15.2 Corrosion protection . 22
15.3 Packaging . 22
Annex A (normative) Ultrasonic inspection of rolling bearing rings . 24
A.1 Purpose . 24
A.2 Principle . 24
A.3 Equipment . 24
A.4 Operating procedure . 24
A.4.1 General rules . 24
A.4.2 Preparation of rings . 24
A.4.3 Examination . 25
A.4.4 Calibration . 25
Annex B (normative) Magnetic particle inspection of ring surfaces . 29
B.1 Purpose . 29
B.2 Principle . 29
B.3 Equipment . 29
B.4 Operation procedure . 30
B.4.1 Preparation of rings . 30
B.4.2 Examination . 30
B.4.3 Demagnetisation . 30
Annex C (normative) Eddy current inspection of the raceways of the rollers . 31
C.1 Purpose .
...