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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DIN EN 61439-1 EN IEC 61439-1 DIN EN 60204-1 BS EN (IEC) 61439-2:2011 EN 61439-2
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ISO 18787 ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 + 3 more
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ACCREDIA 01032 Collegno, IT
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ACCREDIA 00838 Valdagno, IT
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ACCREDIA 00529 Amaro, IT
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dbSNP rs1800562, rs1799945, rs1800730, r DIN EN 27888 ISO 18787 ISO 4832 ISO 15214 + 3 more
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ACCREDIA 00861 Cerignola, IT
ISO 4832 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN 15408 + 3 more
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ACCREDIA 02189 Catania, IT
ETSI EN 319 401 ETSI EN 319 411-1 ETSI EN 319 411-2 ETSI EN 319 412
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Salt spray / neutral salt fog test (ISO ISO 11948-1 DIN EN 62471: 2009 ISO 2808 ISO 2813 + 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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