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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DAkkS D-ML-13079-01-00 Aschaffenburg, DE
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DAkkS D-PL-18171-01-01 Bad Neustadt a.d. Saale, DE
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ACCREDIA 02290 Vergiate, IT
IPC-TM-650 2.2.5 1997 IPC-TM-650 2.1.1 2015
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ACCREDIA 00716 Ozzano Taro, IT
DIN EN ISO 21528-1 ISO 21528-1 ISO 8070 ISO 14675 TEMPO EB AFNOR BIO 12/21-12/06 + 3 more
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RvA M325 Utrecht, NL
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DAkkS D-ML-19686-01-00 Köln, DE
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DAkkS D-K-22286-01-01 Fellbach, DE
Vickers hardness test (ISO 6507) Railway bogies — wheelsets and bogies st Taupunkttemperatur − Messgeräte für relative Feuchte Thermometer, −70 °C + 3 more
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DAkkS D-PL-19142-01-00 Oldenburg, DE
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ACCREDIA 01263 Catania, IT
DIN EN ISO 19458 DIN EN ISO 11885 DIN EN ISO 15587-2 DIN EN ISO 10523 DIN EN 15934 + 3 more
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ACCREDIA 02055 Vizzola Ticino, IT
ISO 15222 ISO 13325 UNECE 117R04/02 (2025) - solo/only
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ACCREDIA 01281 Forlì, IT
DIN EN 12004-2 DIN ISO 11665-4 ISO 13166 DIN EN ISO 10703 DIN EN ISO 9698 + 3 more
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BELAC 462-TEST Liège, BE
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BELAC 462-CAL Liège, BE
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BELAC 009-CAL Mons, BE
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DAkkS D-PL-14150-01-01 Pirmasens, DE
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DAkkS D-PL-17639-01-00 Hagen, DE
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DAkkS D-K-15130-01-00 Michelfeld, DE
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UKAS 9510 Cardiff, GB
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UKAS 1817 Bangor, GB
ISO 11290-1 ISO 6579-1 ISO 7932 ISO 15213-2 W080 based on BS EN ISO + 3 more
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ACCREDIA 01237 Cammarata, IT
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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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