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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DIN EN 13725:2003-07 und Berichtigung UNI EN 13725
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Vibration measuring instruments — test m Railway brake — magnetic track brakes (U nur Vor-Ort-Kalibrierungen entsprechen nicht der DIN 51220 + 3 more
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COI/T.20/Doc n 35/rev 1 2017 COI/T.20/Doc n 33/rev 1 2017 COI/T.20/Doc n 34/rev 1 2017 COI/T.20/Doc n 19/rev 5 2019 OIV-MA-AS313-01 cap 5.2 R2015 + 3 more
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ISO 4832 DIN EN ISO 6579-1 DIN EN ISO 7932 DIN EN ISO 11290-1 DIN EN 13126-19 + 3 more
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ASTM D664 ASTM D92 ISO 3961 2.92 mm systems (continued) Refractive Index + 3 more
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ISO 20653 DIN EN 60529 IEC 60529: 1989 IEC 61400-50 ISO 16232-2 + 3 more
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Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 6506-1 DIN EN ISO 6508-1 ASTM E 8 + 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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