Key takeaways
- The Class 52 is the war locomotive – a freight steam engine deliberately designed from 1942 for simple, fast construction.
- Fastest way to identify it: count the axles. Five coupled axles plus one leading axle at the front give the wheel arrangement 1'E.
- Austria says "Reihe", not "Baureihe" – steam locomotives kept their short, two-digit numbers under this system.
- The Giesl ejector is an Austrian giveaway: a flat, elongated chimney instead of the standard round one.
- There is no scheduled service left – surviving engines run in heritage and special-service operation.
Contents
Fact file
| Vehicle type | Freight steam locomotive with tender |
|---|---|
| Wheel arrangement | 1'E – one leading axle at the front, five coupled driving axles |
| Origin | War locomotive, built from 1942 in simplified form |
| Designation in Austria | Class 52 in the ÖBB classification system |
| Typical special feature | On many ÖBB engines, the Giesl ejector with a flat chimney |
| UIC type code | 90 (other traction type, here steam), country code 81 for Austria |
| Use today | Heritage and special-service operation, no scheduled service |
Identifying features
Is this really the class in front of you?
- Five coupled axles under the boiler, with a small leading axle in front
- Markedly plain, functional design without elaborate cladding
- Tender locomotive – no water tanks on the boiler
- On many ÖBB engines a flat, elongated chimney (Giesl ejector)
- Class designation 52 on the cab or smokebox door
- Today runs exclusively ahead of special and heritage trains
Updated: August 2026 – A heavy, markedly plain steam locomotive with five coupled axles and a flat chimney: that’s the typical picture of the Class 52 in Austria. It’s one of the most numerous steam locomotives ever built in Europe and today is purely a museum vehicle. This page shows you how to recognise it, why it looks the way it does, and how to photograph it.
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What is the ÖBB Class 52?
The Class 52 is the Austrian designation for the war locomotive: a freight steam locomotive with the wheel arrangement 1’E, meaning one leading axle at the front and five coupled driving axles. It was built from 1942 in a deliberately simplified design, geared towards fast production and sparing use of materials.
After the war numerous engines remained in Austria and were carried on by the ÖBB as Class 52. Some received typically Austrian retrofits there, above all the Giesl ejector with its flat, elongated chimney. Today only a few specialists still master such interventions in steam technology, among them the Dampflokomotiv- und Maschinenfabrik. It’s exactly this combination – German base design, Austrian detail solutions – that makes the 52 such an instructive vehicle for anyone learning to tell steam locomotives apart. You can find the standard-gauge original design under the Class 52 on the German page.
Why the locomotive looks so plain
The most striking characteristic of the Class 52 is its austerity. Where older express locomotives appear with cladding, curved shapes and elaborate fittings, the 52 looks like a tool: straight lines, visible rivet rows, little ornamentation.
There’s a practical reason for that. The design was geared towards using as few working hours and as little material as possible. Components were simplified or omitted, production steps combined. For observers this is a gift: the machine displays its technology openly. Boiler, frame, motion and valve gear are visible without detours, which makes it an excellent subject for detail shots.
The wheel arrangement follows the task too. Five coupled axles spread the weight across many wheels and put a lot of adhesive weight onto the rail – ideal for heavy freight trains on straightforward routes. The single leading axle at the front guides the locomotive through curves, and at moderate speed nothing more is needed.
Identifying it in three steps
Count the axles
Five large coupled wheels in a row, with a smaller leading axle in front. That gives 1'E and already rules out most other steam classes.
Check the tender
The Class 52 has a coupled tender. If it's missing and water tanks sit on the sides of the boiler, you're looking at a tank locomotive – such as the Class 77.
Look at the chimney
A flat chimney, stretched in the direction of travel, points to a Giesl ejector and hence an Austrian retrofit. A standard round chimney, though, doesn't rule out the 52.
Keep the order
Always count the axles first. This feature works even from a distance, in poor light and against the light. Check the chimney shape and markings afterwards, at your leisure.
The guide to identifying classes describes how to build this kind of feature chain in general.
Where the Class 52 sits in the Austrian fleet
The ÖBB classification system helps with placing it. Modern traction units carry the word Reihe (class) plus a four-digit number, whose first digit names the traction type. Steam locomotives kept their short numbers – and that’s exactly how you can instantly tell, in conversation or in lists, which era is meant.
| Class number | What it denotes | Example |
|---|---|---|
| Two-digit | Standard-gauge steam locomotive | Class 52, Class 77 |
| Three-digit | Narrow-gauge steam locomotive | Class 298, Class 399 |
| Four-digit starting with 1 | Electric locomotive | Class 1042, Class 1142 |
| Four-digit starting with 2 | Diesel locomotive | Class 2016, Class 2143 |
| Four-digit starting with 4 | Electric multiple unit | Class 4020, Class 4024 |
| Four-digit starting with 5 | Diesel multiple unit | Class 5022, Class 5047 |
In the twelve-digit vehicle number, steam locomotives carry the 90 as the type code at the front, followed by the country code 81 for Austria. For comparison, it’s worth looking at the passenger locomotive ÖBB Class 77 and at the narrow-gauge design Class 298 (U) – three vehicles, three completely different silhouettes.
Special trains can be planned – chance encounters can't
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Photo tips for the Class 52
A freight steam locomotive is a different photographic subject from an express engine. It’s long, low, and visibly working – and that gives you plenty to work with.
- Use a side view. The motion with its five coupled axles is the standout feature. It’s completely lost from the front.
- Wait for a start or a gradient. Under load the locomotive exhausts forcefully and the exhaust beat becomes visible. While coasting, often only a thin plume remains.
- Take detail shots too. Valve gear, axle boxes, the smokebox door and the Giesl ejector are subjects in their own right and tell you more about the design than any overall shot.
- Use long focal lengths sparingly. With steam, a strong telephoto compresses the smoke plume over the locomotive and makes it look cluttered.
- Watch the background. A historic locomotive in front of modern buildings loses impact. A calm, as neutral as possible background keeps the eye on the vehicle rather than its surroundings.
- Photograph the data panel too. With surviving steam locomotives, markings and livery change over the years. An extra shot of the number makes your sighting clearly identifiable later.
Which focal length suits which situation is covered by the guide to the best telephoto lens for railway photography. You’ll find suitable dates via the guide to heritage railways and special trains.
Keep your distance – even at special events
Tracks, platform edges, shunting areas, engine sheds and all operational railway land are off limits. At heritage events there is also additional shunting, run-round moves and water replenishment – vehicles can move unannounced and often quietly. Photograph only from areas that are publicly accessible. What is permitted in any given case depends on the local rules.
Common mix-ups
It points to the Class 52 if …
- you can count five coupled axles and one leading axle at the front
- a tender is coupled on
- the design looks markedly plain and functional
- the number 52 appears on the cab
Look more closely if …
- the chimney is round rather than flat – that doesn't rule out the 52
- the locomotive is standing cold and partly obscured
- another five-coupled freight locomotive is standing next to it
It's not a Class 52 if …
- the locomotive has water tanks on the boiler and no tender
- you count fewer than five coupled axles
- the train is running on narrow gauge – then classes like 298 or 399 come into question
Verdict
The Class 52 is the steam locomotive on which you learn to count axles. Five coupled axles, a tender and a deliberately plain design produce a silhouette you won’t mistake once you’ve seen it. The flat Giesl chimney is the Austrian extra. There is no scheduled service left – anyone wanting to see one plans around special-train dates from heritage operators such as the Eisenbahnmuseum Strasshof and then logs the sighting properly.
In short
A freight steam locomotive with wheel arrangement 1'E, a plain design and a tender, carried in Austria as Class 52. Count the axles, check the tender, look at the chimney – that's all it takes to identify it.
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Summary
- The Class 52 represents the simplest and most widely built freight steam locomotive of its era, and it continued running in numerous European countries after the war.
- In Austria it was carried as Class 52; many engines there received typical Austrian conversions such as the Giesl ejector.
- Axle count, tender type and a look at the chimney are enough to identify it.
- Operability, livery and home depot of surviving locomotives change over time – always check the current status with the operator.
Frequently asked questions
What is the ÖBB Class 52?
It is the Austrian designation for the war locomotive, a freight steam locomotive with the wheel arrangement 1'E. It was built from 1942 in a deliberately simplified design so it could be produced quickly and with little material. After the war many engines remained in Austria and continued running there as Class 52.
What's the quickest way to identify the Class 52?
Count the axles. Under the boiler sit five coupled driving axles, with a single leading axle in front – the wheel arrangement 1'E. Add a tender and a strikingly plain, uncased build. Anyone who sees this combination has already narrowed the field of candidates considerably.
What is a Giesl ejector?
An exhaust-draught system developed in Austria that uses the exhaust steam more efficiently. Externally it is instantly recognisable: instead of a round chimney, a flat chimney, elongated in the direction of travel, sits on the smokebox. Many ÖBB steam locomotives were fitted with it, which makes the feature a good clue to Austrian origin.
Why is it called the war locomotive?
Because it was designed for mass production under wartime conditions. Elaborate components were dropped, materials were saved, and the design was geared towards short build times. The result is a rugged but markedly plain machine – and that very plainness is one of its best recognition features today.
Are there differences from the German Class 52?
The origin is the same, but the later development is not. In Austria many engines received their own conversions and fittings, including the Giesl ejector. Tender types and cab details can also differ. The basic design with five coupled axles, however, remains the same in both countries.
Is the Class 52 still running today?
Only in heritage and special-service operation. There has been no scheduled service for a long time. Which engines are currently operational depends on boiler certificate deadlines, volunteer work and funding, and changes continuously. Anyone wanting to see one should follow the event announcements of the respective operators.
How do I tell it apart from a passenger steam locomotive?
By axle count and wheel diameter. Freight locomotives like the Class 52 have many, comparatively small coupled wheels for high tractive effort at moderate speed. Passenger engines like the Class 77 have fewer coupled axles, larger wheels and usually leading and trailing axles. The silhouette differs markedly as a result.
Is it worth documenting individual engines?
Yes. With surviving steam locomotives, livery, markings, tender assignment and operational status change considerably over the years. A dated sighting with a photo and number is therefore often the only reliable record of what a particular locomotive looked like at a particular time and where it was used.
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Related classes
ÖBB Class 77
The Class 77 is an Austrian passenger tank locomotive with three coupled axles between two leading/trailing axles. Here's how to identify and classify it.
Steam/specialGKB Class 29
The GKB Class 29 belongs to the historic steam fleet of the Graz-Köflacher Bahn. Here's how to read its vehicle number and plan a sighting.
Steam/specialClass 52
Class 52 is Germany's most-built steam locomotive: over 7,000 wartime locomotives with five coupled axles. Today you'll only encounter it in museum operation.
Steam/specialÖBB Class 298 (U)
Class 298 – the old type U – is a narrow-gauge steam locomotive for 760 mm gauge. Here's how to identify it and find it in heritage operation.
Who is behind it
Groups, brands, manufacturers and operators – who owns whom and how to recognise them out in the field.
Bregenzerwaldbahn (Wälderbähnle)
The Bregenzerwaldbahn was a 760 mm narrow-gauge line from Bregenz to Bezau. What remains is a short stretch, on which a society runs steam and diesel trains during the summer half of the year. For spotters, it's one of the few chances to see Bosnian gauge in operation in Vorarlberg.
ManufacturerDampflokomotiv- und Maschinenfabrik AG (DLM)
The Dampflokomotiv- und Maschinenfabrik AG in Winterthur is one of the few businesses worldwide still delivering brand-new steam locomotives after the end of the steam era. Its approach isn't replica building but further development: oil firing, enclosed cabs, modern controls.
Heritage railwayEisenbahnmuseum Strasshof
Eisenbahnmuseum Strasshof isn't a reconstructed museum but a genuine locomotive depot on the Nordbahn that lost its job. The roundhouse, turntable and water crane still stand where they belong – along with Austria's largest vehicle collection.
Heritage railwayErzbergbahn
The Erzbergbahn runs from Vordernberg over the Präbichl to Eisenerz – standard gauge, but with rack sections, because pure adhesion isn't enough on these gradients. The ore traffic is long gone; what remains is a heritage line with technology that has almost died out on the regular network.
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