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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UNI 10478-2 UNI 10478-4 UNI EN 12385-1 ISO 12076 UNI EN 13796-3 + 2 more
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DIN EN 27888 ISO 18787 ISO 6496 ISO 21527-1 ISO 21527-2 + 3 more
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ISO 18787 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 + 3 more
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DIN EN ISO 16535 DIN EN ISO 29469 DIN EN ISO 29767 DIN EN 1607 DIN EN 12667 + 3 more
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DIN EN ISO 12966-2 ISO 4832 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 + 3 more
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ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 7932 DIN EN ISO 11290-1 + 3 more
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DIN EN 27888 ISO 18787 ISO 4832 ISO 21527-1 DIN ISO 16649-2 + 3 more
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DIN EN ISO 11290-1 ISO 16649-2 ISO 11290-1 ISO 6579-1 ISO 4833-1 + 3 more
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IEC 15408-1 IEC 18045 IEC 18367 IEC 20543 IEC 20004
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ACCREDIA 00645 Robassomero, IT
DIN EN ISO 19458 DIN EN 13126-19 DIN EN ISO 14780 DIN EN ISO 16994 DIN EN ISO 18125 + 3 more
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ACCREDIA 00866 Lovere, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 6506-1 DIN EN ISO 6507-1 DIN EN ISO 6892-2 + 3 more
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ACCREDIA 00486 Cucciago, IT
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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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