SEM SNCB 40

Built by CW Mechelen, SEM

Top speed

100 km/h

62 mph

Weight

128 t

282,191 lb

Length

68.9 m

226 ft 1 in

Track gauge

1,435 mm

Standard gauge

Years built

1961

7 units

Axle arrangement

Bo'Bo'+2'2'+2'2'

Overview of the SEM SNCB 40

Explore the SNCB 40, an iconic Belgian diesel-electric multiple unit (DMU).

Built by CW Mechelen and SEM in 1961, this locomotive served the SNCB/NMBS with robust design and reliable performance.

Reaching a top speed of 100 km/h and accommodating 214 passengers (24 in first class, 190 in second), the SNCB 40 was perfect for local and regional routes.

Its substantial 128-ton weight and 68.9-meter length command attention, while its Bo'Bo'+2'2'+2'2' UIC axle classification highlights its intricate engineering.

A significant piece of Belgian railway history, this DMU is a testament to its era.

SEM SNCB 40 technical specifications

	Value	Imperial / US
Built by	CW Mechelen, SEM · 19617 units
Top speed	100 km/h62 mph	62 mph
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	Bo'Bo'+2'2'+2'2'
Capacity	1st class 24, 2nd class 190 seats
Train length	68.9 m226 ft 1 in	226 ft 1 in
Weight	128 t282,191 lb	282,191 lb