kkStB Class 265

The Austrian kkStB Class 265 were branch line tank locomotives with the Imperial Austrian State Railways, which had originally been procured by the Bohemian Northern Railway Company (Böhmische Nordbahn-Gesellschaft) as Class BNB Class VIb for duties on the Böhmisch Leipa-Steinschönau railway line.

BNB Class VIb
kkStB Class 265
ČSD Class 312.7
Number(s)BNB VIb 126/127
kkStB 265.01 / 02
ČSD 312.701 / 702
Quantity2
ManufacturerErste Böhmisch-Mährische Maschinenfabrik, Prague
Year(s) of manufacture1907
Retired1949
Wheel arrangement0-6-2T
Axle arrangementC1'n2t
Track gauge1,435 mm (4 ft 8 1⁄2 in)
Length over buffers9,836 mm
Wheelbase2,800 mm
Overall wheelbase4,800 mm
Empty weight32.3 t
Service weight44.6 t
Adhesive weight35.2 t
Top speed45 km/h
Indicated Power259 kW
Driving wheel diameter930 mm
Carrying wheel diameter840 mm
No. of cylinders2
Cylinder bore420 mm
Piston stroke480 mm
Boiler Overpressure12 bar
No. of heating tubes192
Grate area1.66 m2
Radiative heating area6.1 m2
Tube heating area79.6 m2
Evaporative heating area85.7 m2
Water capacity7,0 m3
Fuel4.7 m3 coal
Brakesvacuum brake

The two locomotives were built in Prague in 1907 by the Erste Böhmisch-Mährische Maschinenfabrik.

The locomotives spent their entire lives on their home line. In 1924 the Czechoslovakian State Railways (ČSD) grouped the engines into their ČSD Class 312.7. After the Second World War the Deutsche Reichsbahn gave them the designation DR Class 90.3.

On the introduction into service of new ČSD Class M 131.1 railcars, these locomotives were retired in 1949.

See also
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