| BNCR Class A |
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| Type and origin |
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| Power type | Steam |
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| Builder | BNCR/NCC, York Road Works, Belfast
Midland Railway, Derby Works |
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| Build date | 1901–1908 |
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| Total produced | 13 |
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| Rebuilder | LMS (NCC) |
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| Rebuild date | 1927–1936 |
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|
| Specifications |
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Configuration:
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| • Whyte | 4-4-0 |
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| Gauge | 5 ft 3 in (1,600 mm) |
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| Leading dia. | 3 ft 0 in (0.914 m) |
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| Driver dia. | 6 ft 0 in (1.829 m) |
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| Wheelbase | 40 ft 11 in (12.47 m) |
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| Length | 49 ft 7+3⁄4 in (15.13 m) |
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| Width | 8 ft 4 in (2.54 m) |
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| Height | 13 ft 2 in (4.01 m) |
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| Axle load | 15.30 long tons (15.55 t; 17.14 short tons)+
14.45 long tons (14.68 t; 16.18 short tons) |
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| Adhesive weight | 29.75 long tons (30.23 t; 33.32 short tons) |
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| Loco weight | 45.05 long tons (45.77 t; 50.46 short tons) |
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| Tender weight | 28.85 long tons (29.31 t; 32.31 short tons) |
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| Fuel type | Coal |
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| Fuel capacity | 6.00 long tons (6.10 t; 6.72 short tons) |
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| Water cap. | 2,090 imp gal (9,500 L; 2,510 US gal) |
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| Boiler pressure | 175 psi (1.21 MPa) |
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| Heating surface: | |
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| • Firebox | 106 sq ft (9.8 m2) |
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| • Tubes | 824 sq ft (76.6 m2) |
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| • Total surface | 930 sq ft (86 m2) |
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| Cylinders | Two |
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| High-pressure cylinder | LHS: 18 in × 24 in (457 mm × 610 mm) |
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| Low-pressure cylinder | RHS: 26 in × 24 in (660 mm × 610 mm) |
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| Valve gear | Walschaerts |
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| Train brakes | Automatic vacuum |
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|
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| Career |
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| Operators | |
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| Scrapped | 1947–1954 |
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The Belfast and Northern Counties Railway (BNCR) Class A was a class of 13 two-cylinder compound steam locomotives built for service in north-east Ireland. The first two members of the class would be the last locomotives to be built for the independent BNCR, being completed before its purchase by the Midland Railway in 1903. The members of the class were rebuilt by the LMS (NCC) becoming either Class A1 or Class U2 depending on how they had been modified.