Product information at 30/10/2026, 12:44
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341.12 €incl. VAT | incl. Shipping Cost
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Would you like to add an extraordinary steam locomotive to your H0 model railroad layout—one whose real-life counterpart was still hauling heavy coal trains well into the 21st century? The Roco 7100079 Steam Locomotive 33-503 from the Kreka coal mine in Bosnia and Herzegovina is a fascinating model for enthusiasts of historic steam technology and extraordinary industrial railways. The locomotive is based on the legendary Class 52 of the former Deutsche Reichsbahn and captivates with its distinctive design featuring a disc-type leading wheel. Delicate metal spoked wheels, drive and coupling rods made of precision-cast metal, and an elaborate drive system on seven axles make this Era IV–VI model a special addition to your H0 collection.
The 33-503 steam locomotive belongs to a particularly interesting group of historic locomotives that remained in service well beyond the classic era of steam railroads. Originally, these locomotives belonged to the Class 52 of the former Deutsche Reichsbahn. After World War II, locomotives of this type found their way to various European countries, where some continued to be used for many decades. In Bosnia and Herzegovina, some of these robust freight locomotives enjoyed an exceptionally long service life. At the Kreka coal mine in the Tuzla Canton, they were used for heavy coal transport, thereby preserving an impressive chapter of European railway history.
A distinctive feature of the historic prototype is its exceptionally long service history. As late as 2024, the Kreka coal mine was among the last operators of steam locomotives in regular service in Bosnia and Herzegovina. At that time, five locomotives of the former Class 52 were in service, transporting lignite from the mine to the Tuzla power plant. The power plant is one of the region’s most important energy-generation facilities. The Kreka coal mine has extensive lignite reserves and is an important part of the region’s industrial history. The Roco 33-503 commemorates this extraordinary steam locomotive operation and offers the opportunity to recreate a coal transport train, a sight that had long since disappeared in many other European countries.
The Roco 7100079 impresses with numerous characteristic features. A distinctive feature is the disc-shaped leading wheel, which sets this locomotive apart from other versions of the Class 52 series. Added to this are finely crafted metal spoked wheels as well as drive and coupling rods made of precision-cast metal. These components underscore the impressive appearance of the five-axle steam locomotive undercarriage. The intricate rod mechanism really comes into its own, especially during slow shunting maneuvers and when pulling heavy freight trains. The striking boiler design and the trailing tender complete the characteristic silhouette of this extraordinary industrial locomotive.
Technically as well, the Roco 33-503 steam locomotive is designed for demanding model railroad operation. The model features a flywheel-driven powertrain that ensures smooth running characteristics. Two axles of the tender are powered. Additionally, power is transmitted via a cardan shaft to all five driving axles of the locomotive. In total, the model thus has seven powered axles. Two axles are equipped with traction tires to enhance traction. This sophisticated drive design is particularly well-suited for depicting heavy coal transports and longer freight trains. With a length over buffers of 265 mm and a minimum curve radius of 358 mm, the steam locomotive can be used on appropriately designed H0 track layouts.
The Roco 7100079 is supplied as an analog DC model for H0 two-wire layouts. An electrical PluX16 interface allows for the later retrofitting of a suitable digital decoder. This enables the steam locomotive to be integrated into a digital model railroad system as needed. A digital or sound decoder is not factory-installed in this analog version. The locomotive features a direction-dependent two-light headlight with LED technology, which underscores the classic character of the steam locomotive. In addition, a Z21 cab is available, which can be used with a compatible Z21 controller after appropriate digitization.
The Roco 33-503 steam locomotive offers particularly interesting possibilities for model railroad layouts focused on industrial and freight transport from Eras IV through VI. True to the prototype, the locomotive can be combined with open freight cars for transporting lignite. A continuous set of coal cars impressively conveys the daily operations between the Kreka mine and the Tuzla power plant. An industrial rail yard, a coal-loading station, or a spur line also make for suitable backdrops. For coupling with freight cars, the model features a NEM 362 coupling shaft on the tender with close-coupling kinematics. A close-coupling mechanism is also provided between the locomotive and the tender. This allows you to create impressive train formations for exceptional steam locomotive operations.
The Roco 7100079 combines the history of a legendary freight steam locomotive with an unusual area of operation in Bosnia and Herzegovina. In particular, the documented coal transports carried out by steam locomotives as late as 2024 lend the prototype exceptional significance. The disc-type leading wheel, the fine metal wheels, and the intricately detailed driving and coupling rods also make the 33-503 an interesting model from a technical standpoint. For collectors of the Class 52 series, enthusiasts of European steam locomotives, and model railroaders specializing in industrial freight transport, this version is an attractive choice. Bring a fascinating piece of living steam locomotive history to your H0 model railroad layout with the Roco 33-503 from the Kreka Coal Mine!
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