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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ENAC LE2633 Tarragona, ES
Railway wheel-rail interaction — roughne ISO 5667-11 ISO 11423-1 ISO 5667-4 ISO 5667-10 + 3 more
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DAkkS D-PL-22637-01-02 Kiel, DE
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ISO 21527-2 UNE-EN 17722 (Método 1)
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ENAC LE2360 Derio, ES
Railway passenger ride comfort evaluatio ISO 5667-11 ISO 5667-4 ISO 5667-10 ISO 15705 + 3 more
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ISO 7150-1 ISO 15705 ISO 6878 ASTM E1077-14(2021) ISO 20595 + 3 more
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Railway brake — anti-slide device (UIC 5 Railway brake — magnetic track brakes (U Railway brakes — conditions for homologa Railway brakes — electropneumatic brakes Railway braking — urban guided transport + 3 more
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Tensile testing of metallic materials (I ASTM E 8 ISO 6507-1 BS EN ISO 9015-1:2011 BS EN ISO 9015-2 + 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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