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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ASTM D 5034-21 IEC 60095-1 EN 50342-1
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RvA M251 Leiden, NL
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DAkkS D-K-15093-01-00 Dortmund, DE
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ACCREDIA 02301 Signa, IT
DIN EN 13657 DIN EN ISO 10523 DIN EN 14346 DIN EN 12457-2 ISO 10523 + 3 more
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RvA M082 Hoorn Nh, NL
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COFRAC 1-0794 Bagnols Sur Ceze Cedex, FR
DIN EN ISO 10703 DIN EN ISO 9698 ISO 10703 UNE-EN ISO 9698 NF ISO 18510-1
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UKAS 0595 1 South Gyle Crescent, GB
parameters and ranges) simulation. digital and analogue HTM 2010:Part 3:1994
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ACCREDIA 01929 Como, IT
ISO 23695 UNI 11759 APAT CNR IRSA 2060 Man 29 2003 APAT CNR IRSA 2090 B Man 29 2003 APAT CNR IRSA 3010 B
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ACCREDIA 01401 Lurate Caccivio, IT
DIN EN ISO 13934-1 DIN EN 12530 DIN EN 13759 DIN EN ISO 3071 DIN EN ISO 14184-1 + 3 more
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BELAC 297-TEST Liège, BE
NF EN ISO 13688 et méthode interne NF EN ISO 19340 ISO 6703-1 NBN 304.04 WAC/III/A/004 en NBN EN 27888 + 3 more
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UKAS 4332 Poole, GB
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DAkkS D-K-17132-01-00 Elsenfeld, DE
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DAkkS D-K-15160-01-00 St. Wendel, DE
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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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