Scope
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 (ฮป)
- Wheelset geometric parameters and deviation
- Contact point position relative to wheel center
- Stability characteristics and steering forces
๐ฉ๐ช
DIN EN 13262
๐ฌ๐ง
BS EN 13262
๐ซ๐ท
NF EN 13262
๐ฎ๐น
UNI EN 13262
๐ช๐ธ
UNE EN 13262
๐ณ๐ฑ
NEN EN 13262
1,399
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(HSG 248) โ 2021
(PCM) based on HSG 248
ISO 12966-2
F06 6 & F06 5 based on BS EN
F05 4 based on BS 770:Part
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Leftfield Environmental
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(HSG 248) โ 2021
LSOP6 based on HSG 248
(PCM) based on HSG 248
Life Environmental Services
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(HSG 248) โ 2021
QSOP 01 based on HSG 248
(PCM) based on HSG 248
QSOP 03 based on HSG 248
accordance with (EN ISO 14644-
BS EN ISO 14644-1:2015
London Borough of Enfield
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staining based on HSG 248
(HSG 248) โ 2021
(PCM) based on HSG 248
London Laboratories
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(HSG 248) โ 2021
ASB04 based on HSG 248
(PCM) based on HSG 248
Lucion Services
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staining based on HSG 248
(HSG 248) โ 2021
(PCM) based on HSG 248
3492, ISO14966 and HSG 248
DIN EN 14629
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M E Broadstone Limited
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Plain ring gauges (taper)
Plain gap gauges (parallel)
Plain plug gauges (taper)
LENGTH
ANGLE
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MP Calibration Services
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Plain plug gauges (parallel)
length bars)
LENGTH (continued)
Micrometers
(enzephalomyopathische Form
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MS Laboratories
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on BS 4401:Part 3:1970(1986)
ISO 936:1998
BS ISO 21528-2:2017
BS ISO 16649-2:2001
ISO 6888-1
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MSS Consulting
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(HSG 264, 2012)
Appendix 5 of HSG 227 (2004)
Appendix 3 of HSG 227 (2004)
(HSG 248) โ 2021
(PCM) based on HSG 248
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Marfleet Microbiology
Active
ISO 6579-1
ISO 21528-2
ISO 16649-2
TP/007 based on BS ISO
ISO 11290-2
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tungsten carbide)
Plain ring gauges (taper)
Straight edges
LENGTH (contโd)
Squares
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Microbiological Solutions
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1) TM 5.4.1 based on BS EN
ISO 21149:2017+Amd1:2022
DIN EN 13704
DIN EN 13727
DIN EN 1656
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Microtech Services (Wessex)
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ISO 7251
# = 100 A
ISO 6888-3
1) A:2b based on ISO 4833-2:2013 Amd 1:2
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NSF Wales Limited
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BS EN ISO 7686:2005
DIN EN 997
DIN EN 13079
DIN ISO 10381-7
DIN EN 14622
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Natureโs Consultancy
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(HSG 248) โ 2021
(PCM) based on HSG 248
DOC/002 based on HSG 248)
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