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
🇧🇪 NBN EN 13262 🇩🇪 DIN EN 13262 🇬🇧 BS EN 13262 🇫🇷 NF EN 13262 🇮🇹 UNI EN 13262 🇪🇸 UNE EN 13262 🇳🇱 NEN EN 13262
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Vickers hardness test (ISO 6507) Railway braking — urban guided transport Railway vehicle body structural requirem Railway bogies — wheelsets and bogies st Railway vehicles — gauge limits (UIC 505 + 3 more
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UKAS 21065 Cleckheaton, GB
staining based on HSG 248 (PCM) based on HSG 248 Analysts’ Guide (HSG 248)
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ACCREDIA 02334 Monfalcone, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) ASTM E 8 DIN EN 10002-1 DIN EN 10045-1 + 3 more
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UKAS 7567 Newcastle-Under-Lyme, GB
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DAkkS D-K-22489-01-01 Steineroth, DE
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ACCREDIA 00254 Zola Predosa, IT
DIN EN ISO 17141 ISO 11737-3 ISO 10993-12 ISO 14698-1 BS EN ISO 11737-1:2018 + 3 more
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ACCREDIA 00666 Limena, IT
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ACCREDIA 00676 Bassano del Grappa, IT
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ACCREDIA 00596 Napoli, IT
ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 + 3 more
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Industries

Wheelset and bogie manufacturing Rolling stock design and engineering Track maintenance and infrastructure management Vehicle certification and type approval Railway research and development

Related Standards

  • UIC 510-2 Railway vehicles — Running gear — Wheels and wheelsets — Part 2: Definitions and gauges
  • EN 13262 Railway applications — Wheelsets and bogies — Safety requirements for wheels
  • UIC 644 Railway — behaviour of coach bogies — Y25 bogie type

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