| LNWR Class A |
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| Specifications |
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Configuration:
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| • Whyte | 0-8-0 |
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| • UIC | D n3vG |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) |
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| Driver dia. | 4 ft 5.5 in (1.359 m) |
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| Wheelbase | 17 ft 3 in (5.26 m) |
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| Loco weight | 50 long tons 0 cwt (112,000 lb or 50.8 t) |
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| Fuel type | Coal |
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| Boiler pressure | 175 psi (1.21 MPa) |
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| Heating surface | 1,489 sq ft (138.3 m2) |
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| Cylinders | Three, compound |
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| High-pressure cylinder | (2 outside) 15 by 24 inches (380 mm × 610 mm) |
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| Low-pressure cylinder | (1 inside) 30 by 24 inches (760 mm × 610 mm) |
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| Valve gear | Stephenson link motion |
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The London and North Western Railway (LNWR) Class A was a class of 0-8-0 steam locomotives. From 1893 to 1900, Crewe Works built 111 of these engines, which had a three-cylinder compound arrangement, and were designed by Francis Webb. According to the LNWR Society, 110 were built between 1894 and 1900.