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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ACCREDIA 00739 Bitonto, IT
APAT CNR IRSA 2030 Man 29 2003 APAT CNR IRSA 2060 Man 29 2003 APAT CNR IRSA 4030 C Man 29 2003 APAT CNR IRSA 4090 A1 Man 29 2003 APAT CNR IRSA 3150 C Man 29 2003 + 3 more
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ISO 4832 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 7932 + 3 more
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EPPO PM 7/79 rev 2 2016/Cor 2017 EPPO PM 7/24 rev 5 2023 Appendix 5
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ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN 846-7 ISO 16649-2 + 3 more
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ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 6888-2 ISO 11731 + 3 more
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ACCREDIA 01565 Corciano, IT
Circ Min Trasp n 18911 02/08/2018
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DIN EN 62471: 2009 DIN EN 303-5 DIN EN 1186-3 DIN EN ISO 105-1302 ISO 5636-5 + 3 more
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ACCREDIA 00679 Camerino, IT
APAT CNR IRSA 2030 Man 29 2003 APAT CNR IRSA 2060 Man 29 2003 DM 10/02/2015 GU n 50 02/03/2015
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ISO 18787 DIN EN ISO 4833-1 ISO 11731 DIN EN ISO 4833-2 DIN EN ISO 6888-1 + 3 more
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DIN EN ISO 4833-1 DIN EN ISO 6888-2 ISO 11731 DIN EN ISO 4833-2 ISO 21528-2 + 3 more
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DIN EN 1021-1 DIN EN 1021-2 DIN EN 20105 DIN EN ISO 659 DIN EN ISO 6941 + 3 more
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DIN EN 13657 DIN EN 14346 DIN EN ISO 10304-1 DIN EN ISO 9377-2 BS EN 15662 + 3 more
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DAkkS D-PL-18721-01-01 Plochingen, DE
DIN EN 1367-5 DIN 51423-2 DIN EN ISO 10523 DIN 53843-2 DIN 53843-1 + 3 more
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ACCREDIA 01602 Camisano Vicentino, IT
IQ-Check Salmonella - AFNOR BRD 07/06-07 Reg CE 152/2009 27/01/2009 GU CE
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ACCREDIA 02292 Faenza, IT
DIN EN ISO 14891 DIN EN ISO 16826 DIN EN 1348 DIN EN 12004-2 DIN EN ISO 29466 + 3 more
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UKAS 0822 Southam, GB
Hydraulic pressure (gauge) TEMPERATURE AC CURRENT Calibration of pressure Gas pressure (gauge) + 3 more
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DIN EN ISO 3093 ISO 4831 ISO 4832 ISO 15214 ISO 21527-2 + 3 more
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ACCREDIA 00090 Uta, IT
DIN EN ISO 11885 DIN EN ISO 10304-1 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more
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ACCREDIA 00258 Cairo Montenotte, IT
dbSNP rs1800562, rs1799945, rs1800730, r DIN EN 27888 DIN EN ISO 3093 ISO 4831 ISO 4832 + 3 more
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ACCREDIA 00733 Priolo Gargallo, IT
DIN EN 13126-19 DIN EN ISO 9377-2 DIN EN ISO 16911-1 DIN EN 14790 DIN EN 14792 + 3 more
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ACCREDIA 02393 Monte di Malo, IT
DIN EN 27888 ISO 4832 ISO 11731 ISO 16649-2 ISO 11290-1 + 3 more
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UKAS 9966 Isleworth, GB
Pure Tone Audiometry Tympanometry Impression Taking Hearing Aid Fitting Hearing Aid Diagnostics and Adjustments + 3 more
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DAkkS D-PL-18162-01-04 Bremen, DE
ID116 DIN EN ISO 12185 DIN EN ISO 20846 DIN EN ISO 3104 DIN EN ISO 2719 + 3 more
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UKAS 8714 Calow, GB
Audiology | Adult Hearing Services: Audiology | Otoscopy Audiology | Impression Taking Audiology | Hearing Aid Fitting Audiology | Real Ear Measurement + 3 more
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ACCREDIA 00600 Pagani, IT
ISO 4832 ISO 21527-1 DIN ISO 16649-2 DIN EN ISO 4833-1 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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