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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COFRAC 1-0793 Perpignan, FR
DIN EN 27888 ISO 4832 ISO 15214 DIN ISO 16649-2 DIN EN ISO 4833-1 + 3 more
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ENAC LE1870 Rinconada, ES
Salt spray / neutral salt fog test (ISO ISO 2808 ASTM D 2240 ISO 48-4 ASTM D 4809 + 3 more
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ENAC LE2015 Madrid, ES
DIN EN 17892 ISO 5667-4 ISO 5667-10 ISO 5667-6 ISO 15705 + 3 more
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ENAC LE2410 Bétera, ES
IEC 62471: 2006 IEC 62471-7 UNE-EN 62471 UNE-EN 13032-1 UNE-EN 13032-4 + 3 more
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ACCREDIA 00573 Pero, IT
DIN EN 13657 DIN EN 15634-1 NF EN ISO-15587-2 ISO 6341 UNI 11759 + 3 more
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UKAS 9583 Staffordshire, GB
Volume | Volume/weight HUMAN BODY FLUIDS Andrology examination HUMAN BODY FLUIDS Andrology examination Detection of sperm | 2016 Laboratory gui Detection of sperm | SOP AND-SOP-15
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DAkkS D-K-22378-01-01 Mühldorf a. Inn, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Railway — traction effort and braking fo Railway vehicles — specific test require positiver Überdruck + 3 more
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ENAC LC10.201 Alacant, ES
(0,15 ± 0,02) · 10-2 mol/mol (0,50 ± 0,0 (6,0 ± 1,0) · 10-2 mol/mol (11,5 ± 2,0) (10 ± 2) · 10-6 mol/mol (50 ± 8) · 10-6 (0,15 ± 0,02) · 10-2 mol/mol (0,30 ± 0,0 1,000 ± 0,100 + 3 more
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ACCREDIA 00287 Fidenza, IT
ISO 18787 ISO 4832 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 + 3 more
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CATAS SpA

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ACCREDIA 00024 San Giovanni al Natisone, IT
Salt spray / neutral salt fog test (ISO DIN EN 597-1 DIN EN 597-2 DIN EN 1021-1 DIN EN 1021-2 + 3 more
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ENAC LC10.234 Bollullos de la Mitación, ES
EURAMET cg-17 EURAMET cg-18 CEM Edición
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ACCREDIA 00849 Campagnola di Zevio, IT
DIN EN 27888 DIN EN 12880 DIN EN ISO 15587-2 DIN EN 13657 DIN EN 14346 + 3 more
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DAkkS D-K-15125-01-01 Lorsch, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Railway brake handbooks (UIC 547) Railway bogies — wheelsets and bogies st Taupunkttemperatur + 3 more
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COFRAC 1-6348 Saint-Etienne Cedex 1, FR
DIN EN 15152 NF EN 15152 :
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ACCREDIA 00893 Massa Lubrense, IT
ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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CDM Smith SE

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DAkkS D-PL-22595-01-02 Crailsheim, DE
DIN EN ISO 19458 DIN EN 932-1 DIN EN ISO 22476-2 DIN 19682-1 DIN 19682-2 + 3 more
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ACCREDIA 00537 Vercelli, IT
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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DAkkS D-PL-12133-01-01 Ilmenau, DE
DIN EN 50155 VDE 0115-200 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 + 3 more
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ACCREDIA 01344 Solofra, IT
ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 18593 DIN EN ISO 19458 DIN EN ISO 11885 + 3 more
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COFRAC 1-0689 Arpajon Cedex, FR
DIN EN ISO 10304-1 DIN EN ISO 17294-2 DIN EN ISO 10704 DIN EN ISO 10703 DIN EN ISO 9698 + 3 more
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COFRAC 1-2334 Is Sur Tille, FR
DIN EN ISO 19017 NF ISO 19017
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COFRAC 1-5571 Soisy Sous Montmorency, FR
NF X 43-257 NF X 43-050 NF X 43-269 NF X 46-032 ISO 16000-7 + 1 more
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COFRAC 1-7012 Fretin, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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DAkkS D-K-21434-01-00 Mömlingen, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Drehmomentaufnehmer, 0,01 N·m 0,1 N·m 0,05 N·m + 3 more
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ACCREDIA 00302 Ortona, IT
BS EN 15662 UNI EN 15662 COI/T.20/Doc n 35/rev 1 2017 COI/T.20/Doc n 34/rev 1 2017 COI/T.20/Doc n 19/rev 5 2019 + 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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