How it works

From a CALIPRI export to fleet-wide analytics

WheelHub reads the CALIPRI open-standard XML (v3.0) and turns it into a live picture of your fleet — no new hardware, no integration project.

Works with your existing CALIPRI workflow

Your measurements, already in the right format

CALIPRI optical gauges record wheel profiles by laser light-section and export them as a documented, open-standard XML file. WheelHub speaks that format natively — you upload the export and the analytics are ready, with nothing to install on the device.

WheelHub is an independent product and is not affiliated with NEXTSENSE GmbH. We simply read the open export.

Four steps, fully automated

From the gauge in the depot to a fleet-wide view — in minutes.

1 · Measure

Your team measures wheels with a CALIPRI optical profile gauge, exactly as they do today — against your existing measurement plans.

2 · Export

CALIPRI writes an open-standard XML (v3.0) export: the plan, session metadata, every measured point, its dimensions, and the raw profile.

3 · Reconstruct

WheelHub parses that XML and rebuilds your physical fleet — depot, train, bogie, axle, and wheel — from the point names alone, no per-fleet setup.

4 · Analyse

Every dimension is classified against the plan’s tolerance bands, wear is trended across inspections, and machining is forecast before limits are reached.

The wheels behind the data

Every dimension WheelHub trends traces back to real rolling stock — measured in the depot, re-profiled on the wheel lathe, and tracked through the bogie it rides under.

Rows of overhauled railway wheelsets lined up in the SBB maintenance works yard at Bellinzona — Overhauled wheelsets at the SBB works, Bellinzona

A Hegenscheidt underfloor wheel lathe with a wheelset mounted for re-profiling in a depot workshop — A Hegenscheidt underfloor wheel lathe re-profiling a wheelset

Close-up of a modern passenger-train bogie and its wheelsets beneath a railcar — A modern passenger bogie and its wheelsets

What WheelHub reads

The export is a flat list of measured points. WheelHub derives the structure from each point's name — so any operator's naming convention reconstructs cleanly into the hierarchy your team already thinks in, without bespoke configuration.

DepotTrainWagonBogieAxleWheel

CALIPRI export — XML v3.0

<calipriexport name="HCMT_WHEEL_1" version="3.0"> // measurement plan = name
<session operator="…" depot="…" date="…">
<measurements>
<point name="90_W1"> // one wheel position
<dimension type="FlangeHeight" value="28.4">
<dimension type="FlangeWidth" value="32.1">
<profile …point cloud…>
<point name="90_W2"> // …and so on

What you get back

One upload, a full read on every wheel.

Tolerance classification on every dimension, judged against your own measurement plan
Drafting-style wheel cross-sections with ISO dimensioning and profile overlays
Wear trending across inspections, with machining forecasts before limits are hit
Per-wheel lifecycle — identity tracked through machining, switches, and replacement

Try it with your own export

A note on CALIPRI

CALIPRI is a trademark of NEXTSENSE GmbH. WheelHub is an independent product and is not affiliated with, endorsed by, or sponsored by NEXTSENSE GmbH or Hexagon AB. WheelHub reads the CALIPRI open-standard XML (v3.0) export to provide its analytics.