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JGR Class 2120 Mantetsu Class 2120 Taiwan Railways Class CK80
Class 2120 locomotive preserved atOme Railway Park
Type and origin Reference:[1] Power type Steam Builder Dübs and Company,Sharp, Stewart and Company,North British Locomotive Company, JGR - Kobe Build date 1890- Total produced 268
Specifications Configuration: ​  • Whyte 0-6-2T Gauge 1,067 mm (3 ft 6 in) Driver dia. 1,250 mm (49.21 in) Trailing dia. 970 mm (38.19 in) Wheelbase 6.02 m (19 ft 9 in) Length 10.371 m (34 ft1⁄4 in) Loco weight 51.23 t (50.42 long tons; 56.47 short tons) Fuel type Coal Fuel capacity 1.9 t (1.87 long tons; 2.09 short tons) Water cap. 7.8 m3 (2,061 US gal; 1,716 imp gal) Firebox: ​  • Grate area 1.33 m2 (14 sq ft) Boiler pressure 12 kg/cm2 (171 lbf/in2; 1,177 kPa) Heating surface 73 m2 (786 sq ft) Cylinders Two Cylinder size 40.6 cm × 55.9 cm (16 in × 22 in) Valve gear Stephenson
Performance figures Tractive effort 7,690kg

TheJGR Class 2120 was aB6 type0-6-2 steamtank locomotive used onJapanese Government Railways for shunting and pulling freight cars. The earliest locomotives of this type were imported fromGreat Britain. One is preserved at theOme Railway Park inOme, Tokyo.^[1]

During theRusso-Japanese War, theImperial Japanese Army captured the southern portion of the Russian-ownedChinese 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 establishedSouth Manchuria Railway (Mantetsu) in 1905. However, in 1908, Mantetsu completed the conversion of its lines tostandard gauge, rendering these locomotives useless. Five were sent directly to theTaiwan Government Railway, and the rest were returned to Japan. The Taiwan Government Railway eventually received a further ten, where they became classCK80.

Same type locomotives were also built inGermany andUnited States. They were calledClass 2400 andClass 2500.

• Japan Railways locomotive numbering and classification
• List of operational steam locomotives in Japan

• 0-6-2T locomotives
• C1′ t locomotives
• Steam locomotives of Japan
• Steam locomotives of China
• Steam locomotives of Taiwan
• Narrow-gauge steam locomotives of China
• 1067 mm gauge locomotives of Japan
• Preserved steam locomotives of Japan
• Freight locomotives
• Dübs locomotives
• NBL locomotives
• Sharp Stewart locomotives
• Railway locomotives introduced in 1890

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