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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ISO 11731
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APAT CNR IRSA 2030 Man 29 2003
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Tensile testing of metallic materials (I
Charpy impact test (ISO 148-1)
DIN EN ISO 6506-1
DIN EN ISO 6507-1
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Charpy impact test (ISO 148-1)
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ASTM E 8
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Charpy impact test (ISO 148-1)
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DM 06/09/1994 GU n 288 10/12/1994
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DIN EN 20105
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