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China Railway class QJ
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 ...
General
| Property | China Railway class QJ four-axle tender |
|---|---|
| Built | 1956-1988 |
| Manufacturers | Datong |
| Wheel arrangement | 2-10-2 (Santa Fé) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | China Railway class QJ four-axle tender |
|---|---|
| Length | 26.01 m |
| Length loco | 16.14 m |
| Wheelbase | 15.37 m |
| Rigid wheelbase | 6.40 m |
| Total wheelbase | 26.26 m |
| Service weight | 133.3 t |
| Adhesive weight | 106 t |
| Axle load | 21.2 t |
| Total weight | 220 t |
| Water capacity | 39,500 l |
Boiler
| Property | China Railway class QJ four-axle tender |
|---|---|
| Grate area | 6.8 m² |
| Firebox surface | 32.5 m² |
| Tube heating surface | 222.8 m² |
| Evaporative heating surface | 255.3 m² |
| Superheater surface | 144.1 m² |
| Total heating surface | 399.4 m² |
Power plant
| Property | China Railway class QJ four-axle tender |
|---|---|
| Driver diameter | 1,500 mm |
| Boiler pressure | 14.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 650 x 800 mm |
Power
| Property | China Railway class QJ four-axle tender |
|---|---|
| Power source | steam |
| Indicated power | 2,192 kW (2,980 PS) |
| Top speed | 80 km/h |
| Starting effort | 281.6 kN |
Calculated values
| Property | China Railway class QJ four-axle tender |
|---|---|
| Factor of adhesion | 1 : 3.69 |
| Optimal speed | 48 km/h |
| Power-to-weight ratio | 16.4 kW/t |
| Heating Surface Equivalent | 706.0 m² |
| Cylinder volume/HSE | 1 : 752.02 |
| Adhesive weight/Total | 1 : 1.26 |
| Tractive force/Heating surface | 1 : 14.72 |
| Grate area/Heating surface | 1 : 58.74 |
| Firebox/Tube surface | 1 : 6.86 |
| Total/Superheater | 1 : 1.77 |
