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The reference for locomotives and railcars

German Reichsbahn class 562-8

Austrian Federal Railways class 656 and Polish State Railways Tr5

Germany 1932 691 produced
Ex 56 533 as NS 4652 D.C. Gerdessen / Nederlandse Spoorwegen / CC-BY 4.0

The class 562-8 was a rebuild of the Prussian G 81, which had received a bissel axle in front of the coupled axles. On the one hand, this measure served to increase the permitted speed and also reduced the axle load to just over 16 tons. Although the G 81 was powerful, it could not achieve smooth running due to the missing carrying axle and the large overhangs. At the same time as the bissel axle was added, the boiler was moved slightly forward for better weight distribution and was also placed higher. In addition, ballast weights were attached to obtain additional traction due to the now very low axle load of the first two coupled axles. 

A total of 691 were rebuilt in this form. They could now run 70 km/h and were even used in the following decades to haul passenger trains in local traffic. Of the locomotives which were still in existence after the Second World War, smaller numbers were in Poland, Austria and the Soviet occupation zone of Germany, where they were also used everywhere. The Reichsbahn in the GDR was the last to use them until 1970.

However, most of the locomotives were in the three western zones after the war. A total of 410 locomotives were counted in varying conditions, of which the newly founded Bundesbahn took over 368. They were withdrawn by 1968, with a new number being only provided for the last survivor, but no longer applied.

Technical data

General

Built
1932-1941
Wheel arrangement
2-8-0 (Consolidation)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Length
18.30 m
Wheelbase
7.20 m
Empty mass
68.9 t
Service mass
74.6 t
Adhesion mass
64.1 t
Total mass
120.1 t
Rigid wheelbase
4.70 m
Axle load
16.2 t
Water capacity
16,500 l
Fuel capacity
7 t (coal)

Boiler

Grate area
2.66 m²
Firebox surface
13.89 m²
Tube heating surface
132.15 m²
Evaporative heating surface
146.04 m²
Superheater surface
51.88 m²
Total heating surface
197.9 m²

Power plant

Driver diameter
1,350 mm
Boiler pressure
14 bar
Expansion type
simple expansion
Cylinders
two, 600 x 660 mm

Power

Power source
steam
Indicated power
927 kW (1,260 PS)
Top speed
70 km/h
Starting effort
209.4 kN

Calculated values

Factor of adhesion
1 : 3.00
Optimal speed
27 km/h
Power-to-weight ratio
12.4 kW/t
Heating Surface Equivalent
319.3 m²
Cylinder volume/HSE
1 : 1,169.06
Adhesive weight/Total
1 : 1.16
Tractive force/Heating surface
1 : 22.10
Grate area/Heating surface
1 : 74.41
Firebox/Tube surface
1 : 9.51
Total/Superheater
1 : 2.81
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