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
3,987 Accredited labs
21 Countries

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ACCREDIA 00842 Bari, IT
ISO 21527-1 DIN EN ISO 4833-1 ISO 11731 DIN EN ISO 6888-1 ISO 16649-2 + 3 more
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ACCREDIA 00352 Conegliano, IT
BS EN 15662 UNI EN 15662 OIV-MA-AS313-01 cap 5.2 R2015 OIV-MA-AS313-02 R2015 OIV-MA-AS2-04 R2009 + 3 more
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ACCREDIA 01085 Atena Lucana, IT
ISO 4832 ISO 21527-1 DIN EN ISO 4833-1 DIN EN ISO 21528-2 ISO 16649-2 + 3 more
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ACCREDIA 00429 Perugia, IT
DIN EN ISO 15587-2 ISO 11731 ISO 6222 ISO 7899-2 ISO 9308-1 + 3 more
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ACCREDIA 00354 Refrontolo, IT
OIV-MA-AS313-01 cap 5.2 R2015 OIV-MA-AS313-02 R2015 OIV-MA-AS2-04 R2009 OIV-MA-AS2-03B R2012 OIV-MA-AS311-02 R2009 + 3 more
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ENAC LE878 Olite, ES
OIV-MA-AS312-01 OIV-MA-AS2-01 OIV-MA-AS2-03B OIV-MA-AS313-15 OIV-MA-AS323-04A1 + 3 more
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ACCREDIA 00820 Castellabate, IT
DIN EN ISO 6579-1 DIN EN ISO 18593 ISO 11731 ISO 18743 ISO 6579-1 + 3 more
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ACCREDIA 00776 Cavriago, IT
ISO 4832 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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ACCREDIA 00815 Nocera Inferiore, IT
ISO 21527-1 DIN EN ISO 10523 ISO 6222 ISO 7899-2 ISO 9308-1 + 3 more
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ACCREDIA 00042 Vaprio d'Adda, IT
DIN 1048-2 DIN ISO 48-4 DIN ISO 815-2 DIN ISO 1817 ISO 37 + 3 more
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ENAC LE391 Jerez de la Frontera, ES
OIV-MA-AS312-01 OIV-MA-AS2-01 OIV-MA-BS-06 OIV-MA-AS2-03B OIV-MA-BS-10 + 3 more
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ACCREDIA 00827 Matera, IT
ISO 18787 DIN EN ISO 6579-1 DIN EN ISO 6888-2 ISO 16649-2 ISO 11290-1 + 3 more
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ENAC LC10.052 San Cibrao das Viñas, ES
CEM DI-012 CEM DI-008 CEM DI-021 CEM DI-005 CEM DI-022 + 3 more
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ACCREDIA 00362 Oderzo, IT
DIN EN 26777 BS EN 15662 ISO 7150-1 ISO 15705 UNI EN 15662 + 3 more
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ACCREDIA 00364 Camposampiero, IT
DIN EN ISO 17294-2 DIN EN 1484 DIN EN ISO 11732 ISO 6222 ISO 7899-2 + 3 more
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ACCREDIA 00339 Schio, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 7438 DIN EN ISO 4136 DIN EN ISO 5173 + 3 more
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ENAC LE1340 San Ginés, ES
Radiated emissions (CISPR 32) Influenza A/H1-2009 Bakterien 2: Clostridioides ISO 4831 ISO 4832 + 3 more
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ACCREDIA 00449 Parma, IT
DIN EN ISO 4833-1 DIN EN ISO 6888-2 DIN EN ISO 16212 DIN EN ISO 21149 DIN EN 13657 + 3 more
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ACCREDIA 00875 Guastalla, IT
DIN EN ISO 12966-2 ISO 4832 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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ACCREDIA 02118 Avellino, IT
APAT CNR IRSA 2030 Man 29 2003 APAT CNR IRSA 2060 Man 29 2003 APAT CNR IRSA 4020 Man 29 2003
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ENAC LE2990 Espinardo, ES
UNE-EN ISO 21149 UNE-EN ISO 16212 UNE-EN 1262
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ENAC LE2524 Brenes, ES
ISO 4832 ISO 21527-1 ISO 16649-2 ISO 21528-2 UNE 77308 + 3 more
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ENAC LC10.195 Paterna, ES
ISO 5-3 ISO 2813 ISO 3864-4 UNE-EN ISO 9342-1 UNE-EN ISO 8598-1 + 3 more
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ENAC LE2687 Bollullos de la Mitación, ES
ISO 18787 ISO 15214 ISO 21527-1 ISO 21527-2 ISO 11083 + 3 more
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ENAC LE1116 Fuenlabrada, ES
ISO 23695 UNE-EN ISO 6222 UNE-EN ISO 16266 UNE-EN ISO 9308-1 UNE-EN ISO 7899-2 + 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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