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Indian Railways class XB
The XB was one of several Pacific and Mikado locomotives designed in the Indian Railway Standard (IRS) programme for use in all India. Loosely based on the BESA principles, it had modern features and was built to serv...
General
| Property | Indian Railways class XBRemove |
|---|---|
| Built | 1927-1936 |
| Manufacturers | Vulcan Foundry, Armstrong Whitworth, North British |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,676 mm (Indian broad gauge) |
Dimensions and weights
| Property | Indian Railways class XBRemove |
|---|---|
| Wheelbase | 10.24 m |
| Rigid wheelbase | 4.01 m |
| Total wheelbase | 20.31 m |
| Service weight | 91.7 t |
| Adhesive weight | 51.8 t |
| Axle load | 17.3 t |
| Total weight | 157.7 t |
| Water capacity | 20,456 l |
| Fuel capacity | 10.2 t (coal) |
Boiler
| Property | Indian Railways class XBRemove |
|---|---|
| Grate area | 4.181 m² |
| Firebox surface | 18.395 m² |
| Tube heating surface | 152.547 m² |
| Evaporative heating surface | 170.942 m² |
| Superheater surface | 43.014 m² |
| Total heating surface | 214.0 m² |
Power plant
| Property | Indian Railways class XBRemove |
|---|---|
| Driver diameter | 1,880 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 546 x 711 mm |
Power
| Property | Indian Railways class XBRemove |
|---|---|
| Power source | steam |
| Estimated power | 969 kW (1,317 PS) |
| Starting effort | 119.0 kN |
Calculated values
| Property | Indian Railways class XBRemove |
|---|---|
| Factor of adhesion | 1 : 4.27 |
| Optimal speed | 50 km/h |
| Power-to-weight ratio | 10.6 kW/t |
| Heating Surface Equivalent | 348.9 m² |
| Cylinder volume/HSE | 1 : 954.77 |
| Adhesive weight/Total | 1 : 1.77 |
| Tractive force/Heating surface | 1 : 11.62 |
| Grate area/Heating surface | 1 : 51.17 |
| Firebox/Tube surface | 1 : 8.29 |
| Total/Superheater | 1 : 3.97 |
