BS EN 16451:2024 – TC

$186.33

Tracked Changes. Railway applications. Braking. Brake pad holder

Published By	Publication Date	Number of Pages
BSI	2024	73

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The document is applicable to the brake pad holders with which the rail vehicles of main-line railways, regional and suburban railways are fitted. Brake pad holders pursuant to this document are to be made from ferrous materials e.g. cast iron, cast steel or forged steel. Brake pad holders made of non-ferrous materials are not subject of this document.

PDF Catalog

PDF Pages	PDF Title
1	30491583
42	A-30458288
43	undefined
47	European foreword
48	Introduction
49	1 Scope 2 Normative references
50	3 Terms and definitions 4 Symbols and abbreviations
51	5 Design and manufacture 5.1 Latch mechanism 5.2 Interchangeability by applying same main dimensions and geometry 5.2.1 General 5.2.2 Interchangeability for “conventional” brake unit 5.2.3 Interchangeability for “compact” brake unit 5.2.4 Dimensional conformity 5.3 Material
52	5.4 Environmental conditions 5.4.1 Ambient temperature 5.4.2 Other environmental conditions 5.4.2.1 General 5.4.2.2 Humidity 5.4.2.3 Rain 5.4.2.4 Snow, ice and hail 5.4.2.5 Solar radiation 5.4.2.6 Resistance to pollution
53	Table 1 — Pollution 5.5 Loading in the direction of force application 5.6 Loading in the direction of the braking moment (tangential force) 5.7 Vibrations and shocks 5.7.1 New designs
54	5.7.2 Existing designs 6 Type test methods 6.1 Sampling for type test Table 2 — Operation to carry out for conformity assessment 6.2 Test requirements 6.3 Test procedure 6.3.1 Interchangeability by applying same main dimensions and geometry 6.3.2 Material
55	6.3.3 Salt spray test 6.3.4 Loading in the direction of force application 6.3.4.1 General 6.3.4.2 Test SL-A
56	Figure 1 — Principle of test bench for test SL-A – Loading in the direction of force application 6.3.4.3 Test SL-B Figure 2 — Principle of test bench for test SL-B – Loading in the direction of force application
57	6.3.4.4 Measurement and controls after tests SL-A and SL-B 6.3.5 Loading in the direction of the braking moment (tangential force) 6.3.5.1 Test method Figure 3 — Principle of test bench – Loading in the direction of the braking moment (tangential force)
58	6.3.5.2 Measurement and controls after loading tests 6.3.6 Vibrations and shocks 6.3.6.1 General 6.3.6.2 Test VL 6.3.6.3 Test VH
59	Figure 4 — Principle of assembly of brake pad dummy in brake pad holder – Vibrations test VH
60	Figure 5 — Dovetail requirements – Vibrations test VH 6.3.6.4 Measurements and controls after tests VL or VH
61	7 In-service assessment 8 Designation 9 Identification and marking
62	Annex A (normative) Interchangeability for “conventional” brake unit Figure A.1 — Interface geometry
63	Figure A.2 — Dovetail dimensions Figure A.3 — Dovetail dimensions
64	Annex B (informative) Interchangeability for “conventional” brake unit Figure B.1 — Space envelope
65	Figure B.2 — Interface geometry
66	Annex C (normative) Interchangeability for “compact” brake unit Figure C.1 — Interface geometry Figure C.2 — Dovetail dimensions
67	Annex D (informative) Interchangeability for “compact” brake unit Figure D.1 — Space envelope
68	Figure D.2 — Dovetail dimensions
69	Annex E (informative) Device with mechanical coding Figure E.1 — Example for device with mechanical coding
70	Annex F (informative) In-service assessment F.1 General F.2 Test set-up and sampling F.3 Procedure F.4 Pass/fail criteria
71	Bibliography