NHJ / NSB 2-8-0 Locomotives in Norway

Class Details by Steve Llanso of Sweat House Media

Class Class 47a (Locobase 6192)

Data from:

Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004).

This trio of Consolidations brought with them the high superheat and expansive dimensions of German locomotive design. After they were absorbed by the NSB in 1926, they continued in service for decades. The last of the three was retired on 28 Feb 1958.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassClass 47a
Locobase ID6192
RailroadNHJ / NSB
Number in Class3
Road Numbers96-98
Number Built3
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)43.37 / 13.22
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)126,104 / 57,200
Engine Weight (lbs / kg)148,150 / 67,200
Tender Loaded Weight (lbs / kg)66,139 / 30,000
Total Engine and Tender Weight (lbs / kg)214,289 / 97,200
Tender Water Capacity (gals / ML)3432 / 13
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.90 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)53 / 26.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)49.20 / 1250
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)22.05" x 25.2" / 560x640
Tractive Effort (lbs / kg)36,832 / 16706.73
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.42
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)27.98 / 2.60
Evaporative Heating Surface (sq ft / m2)1457 / 135.40
Superheating Surface (sq ft / m2)433 / 40.20
Combined Heating Surface (sq ft / m2)1890 / 175.60
Evaporative Heating Surface/Cylinder Volume130.82
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4869
Same as above plus superheater percentage5988
Same as above but substitute firebox area for grate area
Power L1
Power MT

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