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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Circ Min Trasp n 18911 02/08/2018
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DAkkS D-PL-11092-04-01 Wuppertal, DE
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ISO 20653 DIN EN IEC 60068-2-11 DIN EN 60068-2-30 IEC 60068-2-82 ISO 16750-3 + 3 more
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DIN EN 1650 DIN EN 13624 DIN EN 16615 DIN EN 1276
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ACCREDIA 02287 Sant'Antonio Abate, IT
ISO 4832 ISO 21527-2 DIN EN ISO 10304-1 VDE 414-9-11 ISO 11731 + 3 more
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DIN EN 27888 DIN 19682-1 DIN 19682-2 DIN EN ISO 14688-2 DIN EN 12457-4 + 3 more
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ACCREDIA 01433 Ovada, IT
DIN EN 12880 DIN EN 933-1 DIN EN 933-11 DIN EN 1097-2 DIN EN 1097-5 + 3 more
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UKAS 10243 Royston, GB
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UKAS 2230 Prestwick, GB
(HSG 248) – 2021 (PCM) based on HSG 248 LSD.ASB.02 based on HSG 248 LSD.ASB.04 based on HSG 248
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UKAS 10194 Hockliffe, GB
(PCM) based on HSG 248 Analysts’ Guide (HSG 248
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UKAS 0472 Grays, GB
ASB/SOP/OM8 based on HSG 248 (HSG 248) – 2021 QOP03 based on HSG 248 (PCM) based on HSG 248 (PCM) based on HSG 248) + 1 more
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UKAS 10792 Mansfield Woodhouse, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 4234 Slough, GB
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UKAS 2544 Hebburn, GB
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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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