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Japanese Government Railways class 9800
In 1912, the Japanese Government Railways received three types of 0-6-6-0 Mallet locomotives from different builders. These were 24 of the class 9750 from ALCO-Schenectady, 18 of the class 9800 shown here from Baldwin...
| Japanese Government Railways class 9800Remove | |
|---|---|
| Variant | Standard |
| Built | 1912 |
| Manufacturers | Baldwin |
| Wheel arrangement | CC ma |
| Gauge | 1067 mm |
| Length | 18815 mm |
| Service mass | 64705 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Japanese Government Railways class 9800 Standard Remove |
|---|---|
| Built | 1912 |
| Manufacturers | Baldwin |
| Wheel arrangement | 0-6-6-0 (Erie) |
| Gauge | 1,067 mm |
Dimensions and weights
| Property | Japanese Government Railways class 9800 Standard Remove |
|---|---|
| Length | 18.82 m |
| Wheelbase | 7.98 m |
| Total wheelbase | 14.63 m |
| Service mass | 64.7 t |
| Adhesion mass | 64.7 t |
| Total mass | 93 t |
| Rigid wheelbase | 2.74 m |
| Axle load | 12 t |
| Water capacity | 12,276 l |
| Fuel capacity | 3 t (coal) |
Boiler
| Property | Japanese Government Railways class 9800 Standard Remove |
|---|---|
| Grate area | 1.97 m² |
| Firebox surface | 11.334 m² |
| Tube heating surface | 124.583 m² |
| Evaporative heating surface | 135.917 m² |
| Superheater surface | 30.008 m² |
| Total heating surface | 165.9 m² |
Power plant
| Property | Japanese Government Railways class 9800 Standard Remove |
|---|---|
| Driver diameter | 1,245 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 406 x 610 mm and LP: 635 x 610 mm |
Power
| Property | Japanese Government Railways class 9800 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 746 kW (1,014 PS) |
| Starting effort | 134.5 kN |
| Starting effort simple | 161.4 kN |
Calculated values
| Property | Japanese Government Railways class 9800 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.72 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 11.5 kW/t |
| Heating Surface Equivalent | 252.6 m² |
| Cylinder volume/HSE | 1 : 1,390.35 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 16.93 |
| Grate area/Heating surface | 1 : 84.23 |
| Firebox/Tube surface | 1 : 10.99 |
| Total/Superheater | 1 : 4.53 |
