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 (λ)
- Wheelset geometric parameters and deviation
- Contact point position relative to wheel center
- Stability characteristics and steering forces
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DIN EN 13262
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BS EN 13262
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NF EN 13262
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UNI EN 13262
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UNE EN 13262
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NEN EN 13262
1,632
Accredited labs
19
Countries
Showing 1,326–1,350 of 1,632 labs
(HSG 248) – 2021
03 based on HSG 248)
QOP01 based on HSG 248
(PCM) based on HSG 248
The Original Gauge Company
Active
LENGTH
Screw ring gauges (parallel)
LENGTH cont.
As for Involute Spline Gauges
See Note 2
+ 3 more
The Testing Lab
Active
DIN EN 933-11
BS EN ISO 17892-1:2014+A1:2022
BS EN ISO 17892-10:2018
BS EN ISO 17892-11:2019
BS EN ISO 17892-2:2014
+ 3 more
Thermo Electron LED
Active
- Gleichspannung
Messgeräte 0,001 V bis
0,33 V bis
3,3 V bis
330 V bis
+ 3 more
Thermo Sensor
Active
Tensile testing of metallic materials (I
Temperaturmessgrößen
thermometer und
Railway braking — urban guided transport
Railway vehicle body structural requirem
+ 3 more
ThermoTEC Weilburg
Active
Vickers hardness test (ISO 6507)
Taupunkttemperatur
Widerstandssensor * –90 °C
–80 °C
–40 °C
+ 3 more
Thomas Dudley
Active
BS 1212-2:1990 Clause 4
BS 1212-3:1990 Clause 4
DIN EN 997
Laktoseintoleranz (LCT -14055
BS 1212-4:1991 Clause 4, 13, 14
Masse oder
Konventioneller
Wägewert/
Massenormal *)
> 1 mg
+ 3 more
Railway brake — magnetic track brakes (U
Kraft (WPM)
Länge (WPM)
a) nur Vor-Ort-Kalibrierungen
Vickers hardness test (ISO 6507)
+ 3 more
Total Clean Air
Active
ISO 14644-3
BS EN ISO 14644-2:2015:Part 2
DIN EN 12469
BS EN ISO 14644-1:2015
BS EN ISO 14644-4:2022
+ 3 more
Trescal
Active
- Gleichspannung
/ Messgeräte
10 V; 100 V; 1000 V
> 100 mV
> 0,22 V
+ 3 more
Trigas FI
Active
Durchfluss von 0,05 mL/min bis
− Durchfluss von Flüssigkeiten
Railway overhead lines — pantograph head
Massedurchfluss dm / dt
Durchfluss von Gasen
+ 3 more
Tru-Cal Metrology
Active
including dial and digital
LENGTH (cont’d)
Plain plug gauges (taper)
ANCILLARY MEASUREMENTS
Plain ring gauges (taper)
+ 3 more
Tyneside Standards
Active
Micrometers
See Notes 3 and 5
See Note 6
Caliper
length bars) – See Note 5
+ 3 more
UNE-EN 60903
UNE-EN IEC 61243-1
UNE-EN 50508
UNE 204001
UNE-EN 61111
+ 2 more
TÜV NORD CERT
Active
IEC 61000-4-39
IEC 61000-4-3: 2006
VDE 0847-4-3
IEC 61000-4-4: 2012
VDE 0847-4-4
+ 3 more
TÜV NORD Mobilität
Active
positiven Überdruck
positiver Überdruck
- Gleichstromstärke
Kraft
Schließ- und
+ 3 more
ISO 26262-2
ISO 26262-3:
ISO 26262-4
ISO 26262-5
ISO 26262-6
+ 3 more
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