DSB Class MH

The class MH was a class of diesel-hydraulic locomotives of the Danish State Railways (DSB), built by Danish manufacturer Frichs. A total of 120 units, numbered 301–420, were delivered between 1960 and 1965. They were primarily used for shunting and light freight traffic.

Power typeDiesel

Power typeDiesel

BuilderFrichs

Build date1960–1965

Quick facts MH 301–420, Type and origin ...

MH 301–420
MH 346 at the Danish Railway Museum (2005).
Type and origin Power type Diesel Builder Frichs Build date 1960–1965 Total produced 120
Specifications Configuration: ​  • UIC C Gauge 1,435 mm (4 ft 8+1⁄2 in) Wheel diameter 1,150 mm (3 ft 9+1⁄4 in)[1] Length 9.44 m (30 ft 11+5⁄8 in) Width 3.13 m (10 ft 3+1⁄4 in)[1] Height 4.29 m (14 ft 7⁄8 in)[1] Loco weight 40.5 t 45.0 t (with extra ballast)[2][3] Prime mover MAN W8V17,5/22A[2][3] Engine type Straight-8 diesel[4] Cylinders 8 Cylinder size 175 mm × 220 mm (6.9 in × 8.7 in)[2] Transmission Hydraulic, Voith L37U[3]
Performance figures Maximum speed 60 km/h (37 mph) Power output 440 hp (330 kW) Tractive effort 135 kN (30,000 lbf)[1]
Career Operators DSB

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Their design was strongly based on that of the slightly earlier MH 201–203 built by Henschel, using the same MAN diesel engine and Voith hydraulic transmission.^[5]

Apart from a few units damaged in accidents, the locomotives were mostly retired between the late 1980s and 2000.^[6]