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
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Rwanda Standards Board

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Régie Autonome des Transports Parisiens

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COFRAC 1-1523 Boissy-Saint-Leger, FR
DIN EN ISO 6507-1 DIN EN ISO 6508-1 NF X70-100-1 DIN EN 45545-2 NF X70-100-2 + 3 more
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COFRAC 1-5058 Pierre Percee, FR
DIN EN 27888 NF X 31-615 (Uniquement DIN EN ISO 10523
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Durchfluss von 2 m3/h bis 800 rn3/h − Durchfluss von Flüssigkeiten Volumendurchfluss dV/dt von strörnenden + 3 more
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S2 Partnership

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UKAS 27441 Elsworth, GB
(HSG 264, 2012)
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ACCREDIA 00591 Cavriago, IT
ISO 18787 DIN EN ISO 10304-1 DIN 40633-2 DIN EN ISO 6888-2 ISO 4832 + 3 more
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AM-01 based on BS 4401:Part 1: AM-32 based on BS 4401:Part 4: AM-03 based on BS ISO 937:2023 AM-04 based on BS ISO AM-31 based on BS EN ISO + 3 more
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COFRAC 1-0618 Le Bourget Du Lac Cedex, FR
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DIN 53394-2 DIN 53176 DIN EN ISO 1172 ASTM D 5576 IEC 60512-11-4 + 3 more
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COFRAC 1-0162 Paris, FR
DIN EN ISO 12966-2 DIN EN 12266-2 DIN EN ISO 12966-4 DIN EN 13656 DIN 30660 + 3 more
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SERVICIOS AVANZADOS DE INGENIERÍA PARA LA CERTIFICACIÓN Y ACREDITACIÓN, S.L. (SAICA)

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ENAC LC10.192 Sevilla, ES
EURAMET CG-6 CEM DI-021 CEM DI-004 CEM DI-013 CEM DI-012 + 3 more
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SGS Brightsight

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RvA L355 Delft, NL
IEC 15408-1 IEC 18045
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SGS ESPAÑOLA DE CONTROL, S.A. (Unipersonal)

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ENAC LE249 Bueu, ES
UNE-EN ISO 8754 ASTM D1298 UNE-EN ISO 12185 ASTM D1319 ASTM D 5291 + 3 more
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SGS France EIHT - Centre et Ouest Rouen

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COFRAC 1-6449 Saint-Etienne-Du-Rouvray, FR
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COFRAC 1-6446 Evry-Courcouronnes, FR
NF X 43-264 NF X 43-014 NF X 43-267 DIN EN ISO 15587-2 NF T90-111 + 3 more
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COFRAC 1-7056 Gennevilliers, FR
NF X 43-269 - Annexe K NF X43-050 (parties utiles de ISO 22262-1 NF X 43-050 NF ISO 22262-1 (parties utiles
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COFRAC 1-6452 Brive-La-Gaillarde, FR
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COFRAC 1-6454 Toulouse, FR
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DAkkS D-PL-11020-03-01 Puchheim, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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DIN 51757 ASTM D 4052 DIN EN ISO 12185 DIN EN ISO 3405 DIN EN 13016-1 + 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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