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
1,632 Accredited labs
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DAkkS D-ML-19082-01-00 Oberschleißheim, DE
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BeckProsper

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UKAS 8974 Kingswinford, GB
ASTM A370-24 ASTM E23-24 ASTM E 384-22 ASTM E8/E8M-24 ISO 6507-1 + 3 more
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DAkkS D-ML-13090-01-00 Hamburg, DE
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ACCREDIA 01119 Santa Croce sull'Arno, IT
ISO 16181-1 NF EN ISO-15587-2 ISO 16186 DIN EN ISO 17229 DIN EN ISO 17232 + 3 more
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DAkkS D-K-15017-01-00 Frankfurt, DE
Vickers hardness test (ISO 6507) Temperatur * Temperaturmessgrößen −35 °C Railway braking — urban guided transport Temperatur −40 °C + 3 more
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DAkkS D-ML-13452-02-00 Berlin, DE
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Zelldifferenzierung Erythrozyten Großes Blutbild Hämoglobin Kleines Blutbild + 3 more
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DAkkS D-ML-13452-07-00 Mainz, DE
Hämoglobin (immunologisch) CA 125 CA 15-3 CA 19-9 CA 72-4 + 3 more
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Hämoglobin Natriumchlorid Kalium Natrium Eiweißelektrophorese: Albumin, Alpha-1-G + 3 more
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DAkkS D-ML-13322-01-00 Karlsruhe, DE
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DAkkS D-ML-19774-01-01 Gießen, DE
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DAkkS D-ML-13031-01-01 St. Ingbert, DE
Lamotrigin Metanephrine, Normetanephrine Erythrozyten Aripiprazol Lymphozyten + 3 more
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UKAS 0726 Garretts Green, GB
(HSG 248) – 2021 ) (PCM) based on HSG 248) (PCM) based on HSG 248 staining based on HSG 248 (HSG 264, 2012)
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Bizerba SE &

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DAkkS D-PL-15018-01-00 Balingen, DE
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DAkkS D-PL-22936-01-01 Löffingen, DE
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Blower Door

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DAkkS D-K-19788-01-00 Springe-Eldagsen, DE
Positiver und negativer verwendete Abkürzungen: DKD-R
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UKAS 1155 Halesowen, GB
staining based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248 (HSG 264:2012)
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DAkkS D-PL-18812-01-02 Bremen, DE
DIN EN ISO 2418 DIN EN 61340-4-4 DIN CEN ISO/TS 16179 DIN EN ISO 14362-1 DIN EN ISO 14362-3 + 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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