EMD G12

EMD G12 series
Class M2 570 – Alberta in Sri Lanka
Type and origin Power type Diesel-electric Builder General Motors Electro-Motive Division (USA), General Motors Diesel (Canada) Clyde Engineering (Australia) Model G12 Build date 1953–1968 Total produced B-B version: 670 A1A-A1A version: 300 C-C version: 126
Specifications Configuration: ​  • AAR B-B, A1A-A1A and C-C Gauge 1,000 mm (3 ft 3+3⁄8 in) 3 ft 6 in (1,067 mm) 4 ft 8+1⁄2 in (1,435 mm) 5 ft 3 in (1,600 mm) 5 ft 6 in (1,676 mm) Loco weight 107 long tons (109 t; 120 short tons) Fuel capacity 2,840 litres (750 US gal; 620 imp gal) Prime mover EMD 12-567C Engine type two-stroke V12 diesel Cylinders 12 Cylinder size 8.5 in × 10 in (216 mm × 254 mm) Transmission Electric
Performance figures Power output 1,310 or 1,425 bhp (977 or 1,063 kW) Tractive effort 19,100 kgf (187.3 kN; 42,108.3 lbf)
Career Disposition Most scrapped, many preserved, some still in service

The EMD G12 is a class of export locomotive built by GM-EMD, and its Canadian affiliate General Motors Diesel. In addition, Australian licensee Clyde Engineering built ten locomotives for New Zealand in 1957, five for Hong Kong, 23 for Queensland, fourteen for Western Australia and seven for BHP. Australian licensee Commonwealth Engineering also built 42 for Queensland Rail in 1964–1966. Many examples were built in the 1950-1960s for railroads around the world.

They are powered by EMD 12-567C prime movers rated at 1,250 hp (930 kW); some have been rebuilt with EMD 645 engines. The A1A-A1A and C-C versions had a lower axle loading than the B-B version.