The reference for locomotives and railcars


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China Railway class JS
China | 1957 | 1,916 produced
JS 8167 in action at the Sandaoling coal mine in December 2017
JS 8167 in action at the Sandaoling coal mine in December 2017
Georg Trüb / https://railpictures.net/photo/641941

A few years after the revolution, China Railway developed a Mikado that would be built in large numbers. The chassis of the JF1 class, which had been built since 1918, was used as the basis. It received a modern boiler and was also adapted to current requirements in other areas. The new class was called JS or “Jiàn Shè”, which roughly means “construction”.

With a coupling wheel diameter of only 1,370 mm, a high level of traction could be achieved. As is usual for China, the tender was chosen to be large with a coal supply of 17 tonnes. The design came from Dalian, but the production was subcontracted to several plants.

The first 1,135 units were built between 1957 and 1965. Another production only started in 1981, which included almost 800 more locomotives until 1988. More than half of them belonged to a “B” variant, which received some improvements. A special feature was a locomotive that was sold new in 1989 to the Boone and Scenic Valley Railroad in Iowa.

Built1957-1965, 1981-1988
ManufacturerDalian, Qishuyan, Datong, Beijing
Axle config2-8-2 (Mikado) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase33 ft 5 3/16 in
Fixed wheelbase14 ft 6 in
Total wheelbase67 ft 2 11/16 in
Empty weight201,282 lbs
Service weight229,942 lbs
Adhesive weight175,885 lbs
Total weight415,130 lbs
Axle load44,092 lbs
Water capacity9,246 us gal
Fuel capacity37,479 lbs (coal)
Power sourcesteam
Indicated power2,266 hp (1,690 kW)
Optimal speed29 mph
Top speed53 mph
Starting effort49,983 lbf
Power Plant
Driver diameter53.9 in
Boiler pressure218 psi
Expansion typesimple
Cylinderstwo, 22 13/16 x 27 15/16 in
Grate area55 sq ft
Evaporative heating area1,944.7 sq ft
Superheater area959.4 sq ft
Total heating area2,904.1 sq ft
Calculated Values
steam locomotive
last changed: 03/2023

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