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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DIN CEN ISO 15216-2 ISO 19250 AOAC 2012.01 2016 DIN EN ISO 15587-1 EPA 300.1 1997 + 3 more
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DIN EN ISO 1135-4 DIN EN 13744 IEC 62623: 2012 DIN EN 13746 Sound Attenuation EN ISO 4869-1:2018 + 3 more
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ACCREDIA 02189 Catania, IT
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EN 14531-1 DIN EN 50215 UNI EN 14531-2 DIN EN 16334 DIN EN 15355 + 3 more
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DIN EN 14019 EN ISO 1716 IEC 60512-15-2 BS EN ISO 1716:2002 DIN EN 1026 + 3 more
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EN 14304:2009+A1:2013 EN 14305:2009+A1:2013 DIN EN ISO 12623 DIN EN 1873 DIN EN 14963 + 3 more
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ISO 6888-1 ISO 18787 ISO 19250 AOAC 2012.01 2016 ISO 14698-1 + 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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