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The reference for locomotives and railcars

Japanese Government Railways class 9600

North China Transportation Co. Soriko class, China Railway classes KD5 and KD55, and Taiwanese State Railway class DT500

Japan 1913 828 produced
DT609 in December 2015 at Kaohsiung, Taiwan CEphoto, Uwe Aranas

The class 9600 of the Japanese Government Railways consisted of 770 Consolidations for freight service built by several builders between 1913 and 1925. They were the first steam locomotives which were mass-produced in Japan. Their nickname was “Kyuroku”, what just means “nine-six”. 38 more were built for Taiwan and at first called class 800, later D98 and finally DT580. After World War II, another one was built in Taiwan from parts of scrapped locomotives.

Also in World War II, the Central China Railway and the North China Transportation Company urgently needed locomotives and so 251 of the Japanese ones were shipped to China and rebuilt to standard gauge. There they were called Soriko class and after the war, China Railway took them over as class KD5. Some were converted to meter gauge to be used on the Kunming–Hekou Railway and called KD55. In Japan, all were retired at once on March 2nd, 1976 when steam service ended. Today, more than 40 are still existing.

Technical data

General

Built
1913-1925
Manufacturers
Kawasaki, Kisha Seiz&#333, Kokura
Wheel arrangement
2-8-0 (Consolidation)
Gauge
1,067 mm (Cape gauge)

Dimensions and weights

Length
16.56 m
Wheelbase
2136.65 m
Total wheelbase
4315.97 m
Service mass
59.8 t
Adhesion mass
52.7 t
Total mass
93.6 t
Rigid wheelbase
1392.94 m
Axle load
13.2 t
Water capacity
49,210 l
Fuel capacity
2.7 t (coal)

Boiler

Grate area
2.323 m²
Firebox surface
10.034 m²
Tube heating surface
121.331 m²
Evaporative heating surface
131.365 m²
Superheater surface
32.237 m²
Total heating surface
163.6 m²

Power plant

Driver diameter
1,245 mm
Boiler pressure
12.4 bar
Expansion type
simple expansion
Cylinders
two, 508 x 610 mm

Power

Power source
steam
Indicated power
640 kW
Top speed
64 km/h
Starting effort
133.3 kN

Calculated values

Factor of adhesion
1 : 3.87
Optimal speed
29 km/h
Power-to-weight ratio
10.7 kW/t
Heating Surface Equivalent
246.0 m²
Cylinder volume/HSE
1 : 1,004.48
Adhesive weight/Total
1 : 1.14
Tractive force/Heating surface
1 : 17.02
Grate area/Heating surface
1 : 70.43
Firebox/Tube surface
1 : 12.09
Total/Superheater
1 : 4.07
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