Niederschlesisch-Markische Bahn 2-4-0 Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class Series 445-453 (Locobase 631)

Data from

Works numbers were 1-13 in 1867, 25-26, 29-32, 48-49 in 1868, 195-202, 223-224 in 1871

Chief Engineer August Wohler of the Niederschlesisch-Markische Bahn (Lower Silesia and Brandenburg Railroad) in Prussia produced an engine that combined some of Joseph Hall's designs with his own emphasis on simplicity. The result had a different appearance from Hall's Austrian engines because the slide valves and Allan gear lay inside, the plate frame was unfilled, and Hall's bearing-collar crank design was fitted only to the lead, driving axle.As usual for the time, the steam dome sat just behind the smokebox and the drivers had small splashers. Unlike many designs, this design offered full-height face for the cab, a roof, and small side lights.

Weishaupt arrived first for the NMB and was the first built by Schwarzkopff.

51 2-4-0s went to the Lower Silesia from 1864-1875 with 61 1/2" (1,560 mm) drivers, 35 with the 72.6" drivers described in the specifications from 1869-1871. 29 were built for the Berlin-Potsdam-Magdeburg Railroad where they were regarded as powerful, but not steady enough at high speeds. 55 more were build for the Breslau-Freiburg Railroad.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassSeries 445-453
Locobase ID631
RailroadNiederschlesisch-Markische Bahn
CountryGermany
Whyte2-4-0
Number in Class170
Road Numbers
GaugeStd
Number Built170
BuilderSchwartzkopff
Year1867
Valve GearAllan
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.15 / 2.48
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)55,213 / 25,044
Engine Weight (lbs / kg)85,069 / 38,587
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)72.60 / 1845
Boiler Pressure (psi / kPa)149.40 / 1030
High Pressure Cylinders (dia x stroke) (in / mm)17.5" x 20.6" / 445x525
Tractive Effort (lbs / kg)11,035 / 5005.40
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.00
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)15.80 / 1.47
Evaporative Heating Surface (sq ft / m2)1153 / 107.16
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1153 / 107.16
Evaporative Heating Surface/Cylinder Volume201.05
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2361
Same as above plus superheater percentage2361
Same as above but substitute firebox area for grate area
Power L1
Power MT

All material Copyright © SteamLocomotive.com
Wes Barris