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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10 · 10-6 mol/mol  C  20 · 10-6 mol/mo 10 · 10-6 mol/mol  C  5000 · 10-6 mol/ 1 · 10-6 mol/mol  C  10 · 10-6 mol/mol 1 · 10-6 mol/mol  C  5 · 10-6 mol/mol 10 · 10-6 mol/mol  C  100 · 10-6 mol/m + 3 more
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DIN EN 13725:2003-07 und Berichtigung DIN EN 16841-1 UNI 7133-3 DIN EN 16841-1 DIN EN 16841-2 + 1 more
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BELAC 054-TEST Geel, BE
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DIN EN 933-1 DIN EN 933-3 DIN EN 933-4 DIN EN 1097-2 DIN EN 1097-6 + 3 more
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NEN 3650-1 NEN 3650-2 NEN 3651 NEN 3650-3 NPR 3659
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NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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ISO 4832 ISO 21527-1 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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OIV-MA-AS313-01 cap 5.2 R2015 OIV-MA-AS313-02 R2015 OIV-MA-AS323-04B R2009 OIV-MA-AS2-03B R2012 OIV-MA-AS311-02 R2009 + 3 more
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EN 13129 EN 14813-1 EN 14813-1+ A1 EN 14813-2 EN 14813-2+ A1 + 3 more
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dbSNP rs1800562, rs1799945, rs1800730, r DIN EN 15984 DIN EN 27888 DIN EN ISO 15549 DIN EN 13126-19 + 3 more
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DIN EN 1186-2 DIN EN 1186-3 DIN EN 16711-2 ISO 10993-23 BS EN 12868 + 3 more
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ISO 4832 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 21528-2 + 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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