De Dietrich Y 7400

Built by De Dietrich, Decauville, Moyse

Top speed

60 km/h

37 mph

Power output

129 kW

173 hp

Weight

32 t

70,548 lb

Length

8.94 m

29 ft 4 in

Track gauge

1,435 mm

Standard gauge

Years built

1963–1972

489 units

Overview of the De Dietrich Y 7400

Explore the Y 7400 Diesel Locomotive, a robust and versatile workhorse that played a significant role in French railway operations.

Built by De Dietrich, Decauville, and Moyse between 1963 and 1972, this 1435 mm gauge locomotive features a 0-4-0 Whyte notation and B' UIC axles.

Measuring 8.94 meters long and weighing 32 tonnes, the Y 7400 boasts a power output of 129 kW and a tractive effort of 73 kN, with a top speed of 60 km/h.

This reliable diesel locomotive served with both Régiorail Lorraine and the French National Railway Corporation (SNCF), demonstrating its efficiency in shunting and light haulage duties.

Discover the enduring legacy of the Y 7400, a testament to practical and effective locomotive design.

De Dietrich Y 7400 technical specifications

	Value	Imperial / US
Built by	De Dietrich, Decauville, Moyse · 1963–1972489 units
Top speed	60 km/h37 mph	37 mph
Power output	129 kW173 hp	173 hp
Tractive effort	73 kN16,411 lbf	16,411 lbf
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	B'
Whyte notation	0-4-0
Length	8.94 m29 ft 4 in	29 ft 4 in
Width	2.87 m9 ft 5 in	9 ft 5 in
Height	3.87 m12 ft 8 in	12 ft 8 in
Weight	32 t70,548 lb	70,548 lb