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Indian Railways class ZB
Among the IRS standard locomotives, the class ZB was a 2-6-2 with an axle load of six tons for a gauge of two and a half feet (762 mm). Distinct features were the outside frames and the Belpaire firebox that was optim...
General
| Property | Indian Railways class ZBRemove |
|---|---|
| Built | 1925-1952 |
| Manufacturers | Hudswell, Clarke & Co., W.G. Bagnall, Krauss-Maffei |
| Wheel arrangement | 2-6-2 (Prairie) |
| Gauge | 762 mm (Two feet six inch) |
Dimensions and weights
| Property | Indian Railways class ZBRemove |
|---|---|
| Service weight | 29.5 t |
| Adhesive weight | 18.3 t |
| Axle load | 6.1 t |
Boiler
| Property | Indian Railways class ZBRemove |
|---|---|
| Grate area | 1.301 m² |
| Evaporative heating surface | 54.534 m² |
| Superheater surface | 11.613 m² |
| Total heating surface | 66.1 m² |
Power plant
| Property | Indian Railways class ZBRemove |
|---|---|
| Driver diameter | 864 mm |
| Boiler pressure | 11 bar |
| Expansion type | simple expansion |
| Cylinders | two, 305 x 457 mm |
Power
| Property | Indian Railways class ZBRemove |
|---|---|
| Power source | steam |
| Estimated power | 373 kW (507 PS) |
| Starting effort | 46.1 kN |
Calculated values
| Property | Indian Railways class ZBRemove |
|---|---|
| Factor of adhesion | 1 : 3.89 |
| Optimal speed | 50 km/h |
| Power-to-weight ratio | 12.7 kW/t |
| Adhesive weight/Total | 1 : 1.61 |
| Tractive force/Heating surface | 1 : 14.56 |
| Grate area/Heating surface | 1 : 50.84 |
| Total/Superheater | 1 : 4.70 |
