New construction, modernization and overhaul of steam locomotives and steam engines based on the modern steam concept
Dampflokomotiv- und Maschinenfabrik DLM AG
Lagerhausstrasse 3, CH-8400 WinterthurNew on Amplifa
About DLM AG
Dampflokomotiv- und Maschinenfabrik DLM AG, based in Winterthur, is a Swiss company that separated from SLM in mid-2000 and, under the leadership of founding engineer Roger Waller, develops, builds new, modernizes and overhauls modern steam locomotives and steam engines. The modern steam concept includes DLM-system light-oil firing with smoke- and spark-free combustion, welded boilers with superheaters, maintenance-free roller bearings, electric preheating units, full insulation of boiler and cylinders, and one-person operation with remotely controlled steam engines. Its value-added activities include the construction of new rack steam locomotives, the conversion from coal to light-oil firing, the installation of remotely controlled marine steam engines, roller-bearing wheelset assemblies, steam storage technology for fireless locomotives, and the manufacture of pistons, piston rods and flat slide valves. Customers include tourism and museum railways, mountain railways, shipping companies and industrial enterprises at home and abroad, among them the Brienz-Rothorn-Bahn, the Schafbergbahn, the ÖBB, the RhB, the CGN, the BLS and the Puffing Billy Railway in Australia. For special excursion services, DLM operates its own steam locomotive 52 8055, comprehensively modernized in 1998/99.
- Site
- Winterthur
- Processes
- New construction of steam locomotives (modern steam), Manufacture of steam engines (including remotely controlled marine steam engines), DLM-system light-oil firing (development and conversion from coal to light-oil firing), Boiler construction (new welded boiler with superheater), Conversion of wheelsets to maintenance-free roller bearings (23 wheelset assemblies supplied to the, Overhaul and modernization of steam locomotives (e.g. 52 8055, RhB G 3/4 Heidi), Construction of fireless steam locomotives / storage technology, Manufacture of pistons, piston rods and flat slide valves
- Materials
- Steel, Heating oil EL (light fuel oil)
- Founded
- 2000
- Industries
- Tourism and museum railways, Mountain railways (rack railways), Shipping, Energy, steam and storage technology, Chemical industry (explosion-protected fireless locomotives), Shipping (paddle steamers/screw steamers)
- 01
Design and engineering
- 02
Machining of pistons, piston rods and flat slide valves
- 03
Boiler construction (welded boilers with superheater)
- 04
Assembly of steam engines and running gear
- 05
Conversion to light-oil firing and roller bearings
- 06
Overhaul and commissioning
Materials and Processes
Steel
Material for boiler construction (welded boilers with superheater) and locomotive frames.
Heating oil EL (light fuel oil)
Fuel of the DLM light-oil firing system with smoke- and spark-free combustion, also as a conversion from coal firing.
Locations
Winterthur
CHRegistered office and works
- Lot size
- Single items and custom fabrication
- Materials
- Steel
- Steam engine manufacturing
- Boiler construction
- Assembly and overhaul
Components and Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| New construction of steam locomotives (modern steam)Assembly | – | – | – | – | Stahl |
| Manufacture of steam engines (including remotely controlled marine steam engines)Assembly | – | – | – | – | – |
| DLM-system light-oil firing (development and conversion from coal to light-oil firing)Assembly | – | – | – | – | – |
| Boiler construction (new welded boiler with superheater)Joining | – | – | – | – | Stahl |
| Conversion of wheelsets to maintenance-free roller bearings (23 wheelset assemblies supplied to theAssembly | – | – | – | – | – |
| Overhaul and modernization of steam locomotives (e.g. 52 8055, RhB G 3/4 Heidi)Assembly | – | – | – | – | – |
| Construction of fireless steam locomotives / storage technologyAssembly | – | – | – | – | – |
| Manufacture of pistons, piston rods and flat slide valvesMachining | – | – | – | – | – |
| Fitting of snow ploughs/clearing blades onto steam locomotive framesAssembly | – | – | – | – | – |
Additional services
Reference customers
Company History
- 1990–1992
Development of the DLM-system light-oil firing
- 1992
First new-build rack steam locomotives ordered for the Brienz-Rothorn-Bahn; built 1992/96, eight locomotives in total
- 1998–1999
Comprehensive modernization of 52 8055 according to the principles of modern steam
- 2000
DLM AG spun off from SLM under the leadership of Roger Waller
- 2001
Paddle steamer Montreux back in service with new DLM steam drive (650 kW)
- 2003
DLM acquires locomotive 52 8055
- 2016
Inauguration of the modernized RhB G 3/4 No. 11 Heidi on 5 March
- 2018–2019
New DLM steam engine built for the screw steamer Spiez, installed on 18 September 2019
- 2022
Commissioning of the steamship Spiez after issuance of the ship's certificate on 8 April
- 2023
52 8055 severely damaged in a fire at the Schaffhausen depot
- 2025
Overhaul of 52 8055 in Frauenfeld completed; conversion of 99 760 of the SOEG to light-oil firing commissioned