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
1,632
Accredited labs
19
Countries
Showing 201โ225 of 347 labs
Lambeth Scientific Services
Active
(HSG 248) โ 2021
(PCM) based on HSG 248
P-12 based on HSG 248
(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
+ 3 more
Leftfield Environmental
Active
(HSG 248) โ 2021
LSOP6 based on HSG 248
(PCM) based on HSG 248
Life Environmental Services
Active
(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
Active
staining based on HSG 248
(HSG 248) โ 2021
(PCM) based on HSG 248
London Laboratories
Active
(HSG 248) โ 2021
ASB04 based on HSG 248
(PCM) based on HSG 248
Lucideon
Active
DIN EN 772-13
DIN EN 1052-2
DIN EN 772-20
DIN EN 772-14
DIN EN 1052-4
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Lucion Services
Active
staining based on HSG 248
(HSG 248) โ 2021
(PCM) based on HSG 248
3492, ISO14966 and HSG 248
DIN EN 14629
+ 3 more
M E Broadstone Limited
Active
Plain ring gauges (taper)
Plain gap gauges (parallel)
Plain plug gauges (taper)
LENGTH
ANGLE
+ 3 more
MP Calibration Services
Active
Plain plug gauges (parallel)
length bars)
LENGTH (continued)
Micrometers
(enzephalomyopathische Form
+ 3 more
MS Laboratories
Active
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
Active
(HSG 264, 2012)
Appendix 5 of HSG 227 (2004)
Appendix 3 of HSG 227 (2004)
(HSG 248) โ 2021
(PCM) based on HSG 248
+ 1 more
Marfleet Microbiology
Active
ISO 6579-1
ISO 21528-2
ISO 16649-2
TP/007 based on BS ISO
ISO 11290-2
+ 3 more
Meridian Technical Services
Active
BS EN 14876:2007/Internal proceduresDiss
BS EN ISO 18119:2018+A1:2021
BS EN ISO 22434:2011
BS EN ISO 10460:2018
BS EN ISO 13769:2018
tungsten carbide)
Plain ring gauges (taper)
Straight edges
LENGTH (contโd)
Squares
+ 3 more
Micro Precision (Midlands)
Active
LENGTH
Caliper
Depth BS 6468: 2008, 0 to 300
Depth
Dial gauges and dial
+ 2 more
Microbiological Solutions
Active
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)
Active
ISO 7251
# = 100 A
ISO 6888-3
1) A:2b based on ISO 4833-2:2013 Amd 1:2
2) A:6c based on ISO 21528-1:2017 by mos
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