BS EN 12080:2017
$198.66
Railway applications. Axleboxes. Rolling bearings
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 54 |
This European Standard specifies the quality parameters of axlebox rolling bearings supporting the load of the vehicle, required for reliable operation of trains on European networks. It covers metallurgical and material properties as well as geometric and dimensional characteristics. It also defines methods for quality assurance and conditions for approval of the products.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 9 | 1 Scope 2 Normative references |
| 10 | 3 Terms and definitions |
| 12 | 4 Technical specification 4.1 General requirements 4.2 Technical specification content |
| 13 | 5 Quality systems 6 Manufacture 6.1 Steel manufacturing 6.2 Heat treatment |
| 14 | 6.3 Traceability |
| 15 | 6.4 Coatings 6.4.1 General 6.4.2 Permanent coating 6.4.3 Non-permanent coating 7 Material properties 7.1 General 7.2 Steel for rings and rolling elements 7.2.1 Grades |
| 16 | 7.2.2 Inclusion content 7.3 Materials of other components (cages, spacers, seals etc.) 8 Geometry and dimensions 8.1 Dimensions and tolerances 8.2 Rolling bearing internal clearance 8.2.1 Rolling bearing clearance before mounting |
| 17 | 8.2.2 Rolling bearing clearance after mounting 9 Mechanical properties — inner ring expanding ability 10 Physical properties 10.1 Visual aspect 10.1.1 Rings and rolling elements 10.1.2 Cages 10.2 Soundness of rings and rolling elements 10.2.1 General rules |
| 18 | 10.2.2 Internal soundness of rings 10.2.3 Soundness of ring surfaces 10.2.4 Soundness of roller raceway surfaces 10.2.5 Grinding burns 10.3 Case depth |
| 19 | 10.4 Surface hardness 11 Marking 11.1 General |
| 20 | 11.2 Marking of rings for cylindrical roller bearings (CRB) 11.3 Marking of cartridge bearings for axleboxes |
| 21 | 11.4 Marking of spherical roller bearings (SRB) 11.5 Prefix and postfix 12 Inspection 12.1 Inspection plan |
| 22 | 12.2 Sampling |
| 23 | 13 Quality records 14 Approval 15 Delivery and packing 15.1 Greasing of rolling bearings 15.2 Corrosion protection 15.3 Packaging |
| 25 | Annex A (normative)Ultrasonic inspection of rolling bearing rings A.1 Purpose A.2 Principle A.3 Equipment A.4 Operating procedure A.4.1 General rules A.4.2 Preparation of rings |
| 26 | A.4.3 Examination A.4.4 Calibration A.4.4.1 Distance A.4.4.2 Sensitivity A.4.4.3 Automatic monitoring system A.4.4.4 Verification |
| 30 | Annex B (normative)Magnetic particle inspection of ring surfaces B.1 Purpose B.2 Principle B.3 Equipment |
| 31 | B.4 Operation procedure B.4.1 Preparation of rings B.4.2 Examination B.4.3 Demagnetisation |
| 32 | Annex C (normative)Eddy current inspection of the raceways of the rollers C.1 Purpose C.2 Principle C.3 Equipment C.4 Operating procedure C.4.1 Preparation of rollers C.4.2 Examination |
| 33 | C.4.3 Calibration C.4.3.1 Sensitivity C.4.3.2 Automatic monitoring system C.4.3.3 Verification |
| 35 | Annex D (normative)Cages of polymeric material D.1 Purpose D.2 Material D.2.1 General D.2.2 Base material D.2.3 Additives D.2.4 Conditioning D.3 Cage requirements D.3.1 Inspection plan D.3.1.1 General |
| 37 | D.3.1.2 Inspection frequency for series production D.3.2 Moisture content D.3.3 Fibre glass diameter and length measurement procedure |
| 38 | D.3.4 Surface quality D.3.4.1 General D.3.4.2 Surface defects D.3.4.3 Burrs D.3.5 Sub-surface quality |
| 39 | D.4 Mechanical tests D.4.1 Test conditions |
| 41 | D.4.2 Bending test procedures D.4.3 Tension test procedures D.4.3.1 Force applied to cage body |
| 42 | D.4.3.2 Force applied to cage bar |
| 43 | D.5 Thermal ageing in grease or oil bath |
| 44 | Annex E (normative)Approval procedures E.1 General E.2 Complete procedure, type C E.2.1 General E.2.2 Stage 1 E.2.3 Stage 2 E.2.4 Stage 3 |
| 45 | E.2.5 Stage 4 E.2.6 Decision E.3 Reduced procedure, type R |
| 46 | Annex F (normative)Criteria to determine the extent of approval procedures |
| 48 | Annex G (informative)Examples of axlebox assemblies |
| 50 | Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC aimed to be covered |
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BS EN 12080:2017 – TC:2020 Edition
Tracked Changes. Railway applications. Axleboxes. Rolling bearings Published By Publication Date Number of Pages BSI…
