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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ENAC LE1300 Madrid, ES
UNE 10523 UNE 27888 UNE 7027 ISO 15923-1 SM 3500 + 3 more
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ENAC LE1555 Madrid, ES
UNE-EN ISO 7932 ISO 15213-1 ISO 21528-2 DIN EN ISO 6579-1 ISO 22964 + 3 more
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ENAC LE1409 Coslada, ES
SM 3111 SM 5220 D SM 2130 B SM 2520 B SM 2510 B + 3 more
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ENAC LE2360 Derio, ES
SM 2540 F SM 2130 B EPA 8270 UNE-EN ISO 8467 UNE-EN ISO 5815-1 + 3 more
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ENAC LE2081 Abrera, ES
SM 4500 H+ UNE EN 27888 SM 2130 B UNE-EN 77059 UNE-EN 1484 + 3 more
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ENAC LE027 Paterna, ES
UNE 137001 UNE 49706 UNE-EN ISO 2234 UNE-EN ISO 12048 UNE-EN ISO 2244 + 3 more
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ENAC LC10.092 Palma, ES
CEM ME-003
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ENAC LC10.235 Rinconada, ES
CEM ME-003 CEM DI-008 UNE-EN ISO 6789-2 CEM DI-020 CEM DI-005 + 3 more
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ENAC LE2541 Erandio, ES
ISO 10469:2006)
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ENAC LE808 Tres Cantos, ES
IEC 60068-2-1 IEC 60068-2-2 UNE-EN 60068-2-14 UNE-EN 60068-2-78 IEC 60068-2-6 + 3 more
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ENAC LC10.017 Leganés, ES
CEM DI-002 EURAMET CG-2 CEM DI-014 CEM DI-006 CEM DI-016 + 3 more
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ENAC LE201 Sada, ES
ISO 6059 ASTM D 1209 UNE-EN ISO 8467 SM 4500-NH D 3 UNE 77048 + 3 more
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ENAC LE2307 Puertollano, ES
ISO/IEC 25010 ISO/IEC 25040 ISO/IEC 25012 ISO/IEC 5259-2
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ENAC LC10.098 San Ginés, ES
EURAMET cg-18 CEM Ed CEM GUIA CEM TH-001 CEM TH-007 + 3 more
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ENAC LE1105 Valencia, ES
DIN EN 13864 DIN EN 14808 DIN EN 12235 ISO 2549 ISO 4919 + 3 more
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ENAC LE016 Ibi, ES
UNE-EN 71-1 ISO 8124-1 ISO 8124-2 ASTM F963-17 (NM_001718: c.1-c.500) + 3 more
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ENAC LE025 Alcoi, ES
DIN EN ISO 11612 DIN EN ISO 3175-2 ISO 17493 DIN EN ISO 17227 DIN EN ISO 6330 + 3 more
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ENAC LE004 Castellón de la Plana, ES
UNE-EN ISO 10545-2 UNE-EN ISO 10545-3 ASTM C373 UNE-EN ISO 10545-4 UNE-EN ISO 10545-5 + 3 more
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ENAC LE2422 Toledo, ES
UNE-EN 772-11 UNE 136029 DIN 4772:1979 DIN EN 16510-2-4 DIN EN 17539 + 3 more
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AVL IBERICA

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ENAC LC10.240 Valladolid, ES
CEM ME-003
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ENAC LE1004 Logroño, ES
IEC 61400-11:2012/ AMD:2018 IEC 61400-12-2 IEC 61400-50-2 IEC 61400-12-1 IEC 61400-12-3 + 3 more
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BIOTECNAL

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ENAC LE582 Sant Quirze del Valles, ES
UNE-EN ISO 6579-1 UNE-EN ISO 6222 UNE-EN 26777 UNE-EN ISO 7027-1 en 31-7-79 (BOE 29-08-79) + 3 more
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ENAC LE378 Sant Cugat del Vallès, ES
UNE-EN 13284-2 UNE-EN 15259 UNE-EN 16911-2 UNE-EN 13284-1 UNE EN 1911 + 3 more
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ENAC LE1870 Rinconada, ES
ISO 2808 ISO 48-4 UNE-EN ISO 2808 ISO 2409 UNE-EN ISO 2360 + 3 more
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ENAC LC10.234 Bollullos de la Mitación, ES
EURAMET cg-18 EURAMET cg-17 CEM Edición
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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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