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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UKAS 29622 Chelmsford, GB
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UKAS 1119 Enfield, GB
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UKAS 9681 Hextable, GB
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DIN EN ISO 10304-1 ISO 10304-1 ISO 11465 ISO 54321 NF EN ISO 11885 + 3 more
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DIN EN 13260 DIN EN 13261 DIN EN 13262 DIN EN 13103-1 UNI 10478-2 + 3 more
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UKAS 0013 Stone, GB
ISO DIN EN 772-1 DIN EN 594 DIN EN 1607 DIN EN 13964 + 3 more
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UKAS 2569 Gateshead, GB
DIN EN 12504-1 DIN EN 14629 DIN EN 14630 (HSG 248) – 2021 ASTM C876-22b + 3 more
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DAkkS D-K-15223-01-00 Wertheim, DE
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DAkkS D-ML-14413-03-01 München, DE
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UKAS 0227 Poole, GB
LENGTH Plain gap gauges (parallel) ANGLE Depth Plain plug gauges (taper) + 3 more
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DIN EN ISO 3679 ISO 4832 DIN ISO 16649-2 DIN EN 12880 DIN EN ISO 19458 + 3 more
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RvA L696 Udenhout, NL
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UKAS 32229 Cheltenham, GB
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ACCREDIA 00853 Scandiano, IT
DIN EN 1348 DIN EN 12004-2 DIN CEN/TS 16165 DIN EN 1308 DIN EN 1324 + 3 more
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COFRAC 1-2000 Meyzieu, FR
DIN EN 13126-19 ISO 10780 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more
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COFRAC 1-1318 Asnieres Sur Seine, FR
DIN EN 13126-19 ISO 10780 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more
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COFRAC 1-7496 Asnieres Sur Seine, FR
ISO 10780 NF X43-329 BS EN BS EN ISO 21877:2019 BS EN ISO 16911-1:2013 using IS EN 15058:2017 + 3 more
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COFRAC 1-1678 Etupes, FR
DIN EN 13284-1 DIN EN ISO 21877 DIN EN 14791 DIN EN 13211 DIN EN 14385 + 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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