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
🇩🇪 DIN EN 13262 🇬🇧 BS EN 13262 🇫🇷 NF EN 13262 🇮🇹 UNI EN 13262 🇪🇸 UNE EN 13262 🇳🇱 NEN EN 13262
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ETSI EN 319 412 ETSI EN 319 401 ETSI EN 319 411-2 ETSI EN 319 411-1
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ISO 17704 BS EN ISO 14362-1 ISO 1841-2 BS EN ISO 14362-3 ISO 16181-1 + 3 more
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ETSI EN 301 489-1: V2.2.3 IEC 62109-1 DIN EN 50178: 1998 IEC 61000-4-16: 2015 IEC 62109-2 + 3 more
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IEC 60335-2-51 DIN EN 60068-2-30 IEC 61000-6-1 IEC 60335-2-54: 2008 DIN EN 50564 + 3 more
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Telsy

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ACCREDIA 01747 Orvieto, IT
ETSI EN 319 412 ETSI EN 319 401 ETSI EN 319 411-2 ETSI EN 319 411-1
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ACCREDIA 00999 Carugate, IT
DIN EN 60068-2-30 IEC 61000-6-1 AS/NZS CISPR 22:2006 IEC 61000-6-2: 2005 ETSI EN 303 446-2 + 3 more
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WTLAB

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ACCREDIA 01077 Tribano, IT
IEC 62109-1 IEC 61400-21-1 IEC 62109-2 DIN EN 60598-2-4 DIN EN 60068-2-30 + 3 more
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ACCREDIA 01046 Cerea, IT
DIN EN ISO 11546-1 UNI EN ISO 9295 DIN EN ISO 11957 ISO 354 ISO 3741 + 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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