SNCB Type 1

The NMBS/SNCB Type 1 was a class of 4-6-2 steam locomotives built in 1935 and 1938 for working heavy express passenger trains operated by the National Railway Company of Belgium (NMBS/SNCB).

NMBS/SNCB Type 1
NMBS/SNCB Type 1
Type and origin Power type Steam Builder Société Anonyme la Métallurgique, Tubize Build date 1935 - 1938 Total produced 35
Specifications Configuration: ​  • Whyte 4-6-2  • UIC 2′C1′ h4 Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Driver dia. 1,980 mm (77.95 in) Loco weight 124 tonnes (122 long tons; 137 short tons) Tender weight 86 tonnes (84.6 long tons; 94.8 short tons) Water cap. 48,000 litres (11,000 imperial gallons; 13,000 US gallons) Firebox: ​  • Grate area 5.00 m2 (53.8 sq ft) Boiler pressure 18 atm (1.82 MPa; 265 psi) Feedwater heater ACFI Heating surface 234.8 m2 (2,527 sq ft) Superheater: ​  • Heating area 111.7 m2 (1,202 sq ft) Cylinders Four Cylinder size 420 mm × 720 mm (16.54 in × 28.35 in)
Performance figures Tractive effort 198.9 kN (44,710 lbf)
Career Operators NMBS/SNCB Class Type 1 Numbers 101 - 135 1.001 – 1.035 Withdrawn 1962 Preserved One: 1.002 Disposition 1 preserved, 34 scrapped

Design, construction and service history

No. 1.002 on display at Treignes

Thirty five type 1 locomotives were built by the Société Anonyme la Métallurgique at its Tubize factory. They had a high degree of superheat, and a firebox that was so wide, it had two firehole doors. The members of the class were retired in 1962.

One locomotive, no. 1.002, has been preserved by the NMBS/SNCB. It is displayed at the Treignes railway museum of heritage railway CFV3V (Chemin de fer à vapeur des trois vallées) in the far south of Belgium.