JGR Class 2120

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JGR Class 2120
Mantetsu Class 2120
Taiwan Railways Class CK80
Class 2120 locomotive preserved at Ome Railway Park
Type and origin
Power typeSteam
BuilderDübs and Company, Sharp, Stewart and Company, North British Locomotive Company, JNR - Kobe
Build date1890-
Total produced268
 • Whyte0-6-2 Tank locomotive
Gauge1,067 mm (3 ft 6 in)
Driver dia.1.25 m (4 ft 1 in)
Trailing dia.970 mm (3 ft 2 in)
Wheelbase6.02 m (19 ft 9 in)
Length10.371 m (34 ft 0.3 in)
Loco weight51.23 t
Fuel typeCoal
Fuel capacity1.9 t
Water cap7.8 m3 (2,061 US gal)
 • Firegrate area
1.33 m2 (14 sq ft)
Boiler pressure12 kg/cm2 (170 lbf/in2)
Heating surface73 m2 (786 sq ft)
Cylinder size40.6 cm × 55.9 cm (16 in × 22 in)
Valve gearStephenson

The JGR Class 2120 was a B6 type 0-6-2 steam tank locomotive used on Japanese Government Railways for shunting and pulling freight cars. The earliest locomotives of this type were imported from Great Britain. One is preserved at the Ome Railway Park in Ome, Tokyo.[1]

During the Russo-Japanese War, the Imperial Japanese Army captured the southern portion of the Russian-owned Chinese Eastern Railway. The Japanese converted the lines under their control to Japanese 1,067 mm gauge, and sent 187 Class 2120 locomotives to the newly established South Manchuria Railway (Mantetsu) in 1905. However, in 1908, Mantetsu completed the conversion of its lines to standard gauge, rendering these locomotives useless. Five were sent directly to the Taiwan Government Railway, and the rest were returned to Japan. The Taiwan Government Railway eventually received a further ten, where they became class CK80.

See also[edit]


  1. ^ a b Naotaka Hirota Steam Locomotives of Japan (1972) Kodansha International Ltd. pp.25,27,93&103 ISBN 0-87011-185-X