Belgian State Railways Type 12

The Belgian State Railways Type 12 was a class of 2-4-2 steam locomotives for express passenger service, introduced in 1888. They were the successors of the Belgian State Railways Type 1 locomotives.^[1]

Belgian State Railways Type 12
Type and origin Power type Steam Build date 1888–1897 Total produced 115
Specifications Configuration: ​  • Whyte 2-4-2  • UIC 1B1 n2 Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 1,400 mm (4 ft 7+1⁄8 in) Driver dia. 2,100 mm (6 ft 10+5⁄8 in) Trailing dia. 1,400 mm (4 ft 7+1⁄8 in) Wheelbase 6,560 mm (21 ft 6+1⁄4 in) Loco weight 1888 type: 49.20 t (108,500 lb) 1892 type: 49.70 t (109,600 lb) 1897 type: 51.96 t (114,600 lb) Firebox: ​  • Type Belpaire  • Grate area 4.7071 m2 (50.667 sq ft) Boiler pressure 10 atm (1.01 MPa; 147 psi) Heating surface 124.675 m2 (1,341.99 sq ft) Cylinders Two, inside Cylinder size 500 mm × 600 mm (19.69 in × 23.62 in) Valve gear Walschaert
Performance figures Maximum speed 110 km/h (68 mph) Power output 850 CV (838 hp; 625 kW) Tractive effort 4,796 kg (10,573 lb)
Career Operators Belgian State Railways Class Type 12

Construction history

The locomotives were built by various manufacturers from 1888 to 1897.^[1] The machines had an outside frame with the cylinders and the Walschaert valve gear located inside the frame.^[2]

The locomotives used three-axle tenders with a 14 m³ (490 cu ft) capacity, as well as two-axle tenders with 9 m³ (320 cu ft).^[1]

Known production quantities

Manufacturer	Quantity	Type / Years	Note
Cockerill	28	1885–1888	Belgian State Railways[3]
Tubize	12		Belgian State Railways[4]
Saint-Léonard [fr]	15	1891–1896[5]	Belgian State Railways[6]
Couillet	10		Belgian State Railways[7]
Franco-Belge	5	1893–1895	Belgian State Railways[8]
Haine-Saint-Pierre [fr]	13	1892–1897	Belgian State Railways[9]
La Meuse	14	1888–1898	Belgian State Railways, one with Durant-Lencauchez valve gear[10]
Carels Frères	8		Belgian State Railways[11]