SNCF Class Y 7400

Class Y 7400
Y 7832 at Gare de Neussargues, Cantal
Type and origin Power type Diesel Builder Billiard Decauville De Dietrich Moyse Build date 1959, 1963-72 Total produced 1 + 488
Specifications Configuration: ​  • Whyte 0-4-0  • UIC B Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Driver dia. 1,050 mm (3 ft 5 in) Wheelbase 3,685 mm (12 ft 1.1 in) Length 8,940 mm (29 ft 4 in) Loco weight 32 tonnes (31 long tons; 35 short tons) Fuel type Diesel Prime mover Poyaud 6PYT Transmission Mechanical
Performance figures Power output 129 kW (173 hp) Tractive effort 73 kN (16,000 lbf)

The Y 7400 class of small shunters is France's most numerous with 488 locomotives in the production build. The first 120 were built by Deauville, with further batches built by De Dietrich (105) and Moyse (263). They have the 0-4-0 ("B") wheel arrangement, 150 kW diesel engines and mechanical transmission. They can be found all over the French network.

During 1959 Y 7192 was converted to mechanical transmission and renumbered as Y 7001. This locomotive was the prototype for the Y7400 class.

Non-SNCF users

RATP have two Y 7400 class locomotives built in 1969 by Moyse. They are numbered T 102 & T 103 and were not part of the SNCF fleet. Likewise Voies Ferrées Locales et Industrials (VLFI ) have two Y 7400 locomotives, 088 & 089, which were originally built for CFD. VFLI have augmented their fleet with Y 7474 and Y 7684 purchased from SNCF.

Only Y 7566 has been preserved. It's based at Chemins de Fer de Blaise-et-Der, Wassy.