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
🇩🇪 DIN EN 13262 🇬🇧 BS EN 13262 🇫🇷 NF EN 13262 🇮🇹 UNI EN 13262 🇪🇸 UNE EN 13262 🇳🇱 NEN EN 13262
1,632 Accredited labs
19 Countries

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RvA I141 Noord-Scharwoude, NL
DIN EN 15746-4 DIN EN 14033-1 DIN EN 14033-2 DIN EN 15746-1 EN 14033-3 + 3 more
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ACCREDIA 00719 Longarone, IT
ISO 17234-1 ISO 4045 EPA 8270 ISO 17234-2 DIN EN ISO 17075-1 + 3 more
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UKAS 2338 Burton-upon-Trent, GB
DIN EN 13284-1 BS ISO 9096:2017 requirements of BS EN 15259:2007 Standard and BS EN 15259:2007 DIN EN ISO 16911-1 + 3 more
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DAkkS D-K-19566-01-00 Hilden, DE
Druck * > –0,12 bar bis negativer und positiver Überdruck p e > –0,01 bar bis > 0,03 bar bis + 3 more
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COFRAC 1-7246 Cherbourg-En-Cotentin, FR
NF EN ISO 6892-1 (méthode DIN EN ISO 9016 DIN EN ISO 5178 ISO 11148-1
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CETEP

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COFRAC 1-2262 Mainvilliers, FR
DIN EN 12469 NF S 90-351 BS EN ISO 14644-1:2015 ISO 14644-3
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CEcert

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DAkkS D-PL-12049-01-02 Wismar, DE
IEC 61000-4-2: 2008 EN IEC 61000-4 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 + 3 more
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CHEMISERVICE

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ACCREDIA 00228 Monopoli, IT
DIN EN 17892 NEN-EN 16618 (incl EN 62366-1: 2015 +A1: BS EN 15662 ISO 12966-2 + 3 more
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ACCREDIA 01477 Gazoldo degli Ippoliti, IT
ISO 4832 DIN EN ISO 5764 UNI 03 DIN EN 14675 DIN EN ISO 4833-1 + 3 more
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ACCREDIA 00618 Vicenza, IT
DIN EN 1186-3 IEC 62321-3-1 DIN EN 13727 EPA 6020 DIN EN 12457-2 + 3 more
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COFRAC 1-2263 Arnage, FR
NF X 43-269 NF X 43-269 - Annexe K NF X 43-298 NF X 43-259 ISO 22262-1 + 3 more
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ACCREDIA 01177 Parma, IT
ISO 18787 DIN EN ISO 6888-2 ISO 4832 DIN EN ISO 11290-1 DIN EN 14675 + 3 more
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ENAC LE2384 Leganés, ES
ISO/IEC 15408-3 ISO/IEC 15408-1 ISO/IEC 15408-2 ISO/IEC 15408-4 ISO/IEC 15408-5 + 1 more
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COFRAC 1-0064 Saint-Marcel, FR
DIN EN 1254-2 DIN EN 1254-3 DIN EN 1254-5 DIN EN 12101-10 BS EN 50291-1:2018 + 3 more
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DAkkS D-ML-21581-01-00 Berlin, DE
Thrombozytenaggregationstest Blutbild mit Vordifferenzierung Calcium Natriumchlorid Kalium + 3 more
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ENAC LC10.255 Torrejón de Ardoz, ES
CEM EL-020 EURAMET cg-17 CEM EL CEM ME-004 EURAMET cg-11 + 3 more
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ENAC LE1009 Talayuela, ES
UNE 118019 UNE 118012 ISO 22980 UNE 118020 UNE 118021-2
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DAkkS D-K-19708-01-00 Paderborn, DE
- Gleichspannung Quellen > 0,10 V > 1 V > 10 V - Gleichstromstärke + 3 more
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ENAC LE2170 Olot, ES
SM 3111 B SM 3500-K B SM 3500-Na B SM 2330 B SM 3113 B UNE-EN ISO 8467 + 3 more
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COSMOB

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ACCREDIA 00215 Montelabbate, IT
ISO 16000-3 BS ISO 9227:2022 ISO 16000-6 ISO 16000-9 DIN EN 14749 + 3 more
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COFRAC 1-0097 Charleville-Mezieres, FR
DIN EN ISO 6508-1 ASTM E8/E 8M DIN EN ISO 643 EN ISO 12624 ISO 4967 + 3 more
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ACCREDIA 00841 Grugliasco, IT
EN ISO 16119-2 DIN EN ISO 28139 EN ISO 16119-3 EN ISO 19932-1 EN ISO 19932-2
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DAkkS D-PL-12030-01-02 Plattling, DE
DIN EN 55016-2 VDE 0877-16-2-1 VDE 0877-16-2-2 VDE 0877-16-2-3 EN IEC 61000-4 + 3 more
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CSI SpA

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ACCREDIA 00009 Bollate, IT
BS 1363-1 BS EN 15662 DIN EN ISO 6888-1 DIN EN 60068-2-30 DIN EN 81-58 + 3 more
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CSTB - BV

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COFRAC 1-0300 Marne La Vallee Cedex 2, FR
DIN EN 947 DIN CEN TS 15119-2 NF P 20-501 DIN EN 1026 BS EN 14351-1:2006+A2:2016 + 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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