Scope
UIC 519
Railway Wheelset Equivalent Conicity Determination
This test method specifies procedures for determining the equivalent conicity of railway wheelsets, a critical parameter governing vehicle stability and steering behavior on curves. Conicity describes the geometric relationship between wheel profiles and rail geometry, affecting how vehicles negotiate curves and respond to track irregularities. The measurement is essential for wheelset manufacturers, vehicle designers, and track maintenance specialists to ensure stable, safe operation and minimize wear and derailment risk. Accredited testing provides objective verification that wheelsets meet design specifications and regulatory requirements for dynamic safety.
What it measures
- Wheel profile geometry and taper angles
- Equivalent conicity value (λ)
- Wheelset geometric parameters and deviation
- Contact point position relative to wheel center
- Stability characteristics and steering forces
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NBN EN 13262
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DIN EN 13262
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BS EN 13262
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NF EN 13262
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UNI EN 13262
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UNE EN 13262
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NEN EN 13262
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Neisseria gonorrhoeae
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Borrelia burgdorferi IgG
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2 · 10–6 mol/mol  C  100 · 10–6 mol/mo
0,1 · 10–2 mol/mol < C  2,5 · 10–2 mol/
1 · 10–6 mol/mol  C  100 · 10–6 mol/mo
5 · 10–6 mol/mol  C  20 · 10–6 mol/mol
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DIN EN 13018
ISO 16750-5
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DIN EN IEC 60068-2-5
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ISO 21527-1
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DIN ISO 16649-2
DIN EN ISO 4833-1
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NBN EN 13508-2 (Codering)
NBN B-34-001
SB 250 Hoofdstuk 7 - Hoofdstuk 14
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