The reference for locomotives and railcars
Bavarian D VI
German Reichsbahn class 9875
Germany | 1880 | 53 produced
No. 7508 “Berg” in October 1985 in the Bochum-Dahlhausen Railway Museum
No. 7508 “Berg” in October 1985 in the Bochum-Dahlhausen Railway Museum

The D VI was a four-coupled tank locomotive for local railways, which had been developed together with the D VII. It was intended for railway lines with a maximum axle load of up to 12 tonnes on the level, while its sister was intended for branch lines with more gradients. Between 1880 and 1894, Krauss and Maffei delivered a total of 53 vehicles.

Despite the small size, the locomotives benefited from modern developments. Vacuum brakes were already installed in the first examples, later even air brakes. For easier accessibility during maintenance, running boards were used for the first time on a Bavarian locomotive. Sometimes there was also a connecting bridge to the train. Initially, there were no storage tanks on the side, instead 500 kg of coal were accommodated in the driver's cab and 1.8 m³ of water were in the frame, which was designed as a water tank. The last nine machines received storage tanks on both sides of the boiler, which increased the capacities to 800 kg or 2.3 m³.

With 26 machines, the Reichsbahn received about half of the originally built ones, which were then classified as class 9875. Their service there ended in the 1920s, but a few examples were sold to works railways. The last example was the former 98 7508 that was in use at the Raubling peat works until 1964. This locomotive is now maintained by the DGEG and again has the number 1222 of the K.Bay.Sts.B. and the name “Berg”.

Variantwell tankside tanks
ManufacturerMaffei, Krauss
Axle config0-4-0WT (Four-coupled) 0-4-0T (Four-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length22 ft 6 1/16 in
Service weight40,785 lbs43,211 lbs
Adhesive weight40,785 lbs43,211 lbs
Axle load20,503 lbs21,605 lbs
Water capacity476 us gal608 us gal
Fuel capacity1,102 lbs (coal)1,764 lbs (coal)
Power sourcesteam
Estimated power121 hp (90 kW)
Optimal speed9 mph
Top speed28 mph
Starting effort8,190 lbf
Power Plant
Driver diameter39.6 in
Boiler pressure174 psi
Expansion typesimple
Cylinderstwo, 10 1/2 x 20 in
Grate area8.1 sq ft
Firebox area32.6 sq ft
Tube heating area244.1 sq ft
Evaporative heating area276.7 sq ft
Total heating area276.7 sq ft
Calculated Values
steam locomotive
local railway
secondary line
last changed: 01/2022

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