The reference for locomotives and railcars
China Railway class QJ
China | 1956 | 4,717 produced
QJ 7105 on the JiTong railway
QJ 7105 on the JiTong railway
Sammy King

Between 1956 and 1960, various factories in China manufactured a total of 42 prototypes of a new 2-10-2 freight locomotive, which was based on the Soviet ОР21. From 1964 onwards, series production of a total of 4,675 additional machines, which were soon referred to as QJ, began in Datong. The abbreviation here stood for “Qianjin”, which means “progress”.

They replaced the JF and FD in heavy freight traffic and also pulled heavy passenger trains. In addition to the stoker and mostly smoke deflectors, their features also included the distinctive air horn. Some QJs were also built in Soviet broad gauge. A chimney similar to the Giesl ejector was tested on other machines.

Although production continued until 1988, replacement with diesel locomotives began in the eighties. After steam operations on the Chinese State Railways officially ended in 2002, the last of them disappeared from the main lines in 2003. However, the private JiTong Railway used the QJ to transport coal on its 945 km long line in Inner Mongolia until 2005 and it was also used by industrial companies until around 2010. Three QJs later found their way to the USA.

Variantfour-axle tendersix-axle tender
Axle config2-10-2 (Santa Fé) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length85 ft 4 in95 ft 10 in
Length loco52 ft 11 7/16 in
Wheelbase50 ft 5 1/8 in
Fixed wheelbase20 ft 11 15/16 in
Total wheelbase86 ft 1 7/8 in
Service weight293,876 lbs
Adhesive weight233,690 lbs
Total weight485,016 lbs557,769 lbs
Axle load46,738 lbs
Water capacity10,435 us gal13,209 us gal
Fuel capacitycoal
Power sourcesteam
Indicated power2,940 hp (2,192 kW)
Optimal speed30 mph
Top speed50 mph
Starting effort63,296 lbf
Power Plant
Driver diameter59.1 in
Boiler pressure213 psi
Expansion typesimple
Cylinderstwo, 25 9/16 x 31 1/2 in
Grate area73.2 sq ft
Firebox area349.8 sq ft
Tube heating area2,398.2 sq ft
Evaporative heating area2,748 sq ft
Superheater area1,551.1 sq ft
Total heating area4,299.1 sq ft
Calculated Values
steam locomotive
last changed: 01/2024

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