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The reference for locomotives and railcars

Empress Elisabeth Railway V

Imperial-Royal State Railways class 70 and Czechoslovak State Railways class 402.0

Austria-Hungary 1873 24 produced
KEB No. 200, later kkStB 70.21 on a builder's photo Lokomotivfabrik Floridsdorf PD

In 1873, the Kaiserin-Elisabeth-Bahn initially received eight freight locomotives from the Sächsische Maschinenfabrik Hartmann in Chemnitz. One of them received an honorary diploma at the 1873 World Exhibition in Vienna. The next 16 locomotives came from Austria, namely from Wiener Neustadt and Floridsdorf.

These were eight-coupled locomotives with a wheel diameter of 1,106 mm for use on low mountain lines with a low axle load. To run through tighter curves, the fourth axle could be moved laterally by 20 mm. They had outside cylinders but inside valve gear.

When the KEB was nationalized in 1884 they became the kkStB class 70. Shortly thereafter they received new boilers to extend their life. After the First World War, a total of five came to the ČSD, which remained in service for more than 20 years. The two machines of the BBÖ were retired in 1936.

Technical data

General

Built
1873-1875
Manufacturers
Hartmann, Wiener Neustadt, Floridsdorf
Wheel arrangement
0-8-0 (Eight-coupled)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Length loco
9.14 m
Wheelbase
3.58 m
Empty mass
38 t
Service mass
42.4 t
Adhesion mass
42.4 t
Rigid wheelbase
2.40 m
Axle load
10.7 t
Water capacity
10,200 l
Fuel capacity
6 t (coal)

Boiler

Grate area
1.75 m²
Firebox surface
9.4 m²
Tube heating surface
141.58 m²
Evaporative heating surface
150.98 m²
Total heating surface
151.0 m²

Power plant

Driver diameter
1,106 mm
Boiler pressure
10 bar
Expansion type
simple expansion
Cylinders
two, 448 x 579 mm

Power

Power source
steam
Estimated power
400 kW (544 PS)
Top speed
35 km/h
Starting effort
89.3 kN

Calculated values

Factor of adhesion
1 : 4.65
Optimal speed
27 km/h
Power-to-weight ratio
9.4 kW/t
Heating Surface Equivalent
198.0 m²
Cylinder volume/HSE
1 : 922.00
Adhesive weight/Total
1 : 1.00
Tractive force/Heating surface
1 : 12.35
Grate area/Heating surface
1 : 86.27
Firebox/Tube surface
1 : 15.06
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