SBB-CFF-FFS Bm 4/4

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SBB-CFF-FFS Bm 4/4
SBB Bm 4 4 18424.jpg
Type and origin
Power type Diesel
Builder SLM, SAAS
Build date 1960–1970
Total produced 46
Specifications
UIC class Bo′Bo′
Gauge 1,435 mm (4 ft 8 12 in)
Length 12,650–13,710 mm (41 ft 6 in–45 ft 0 in)
Loco weight 72 tonnes (70.9 long tons; 79.4 short tons)
Traction motors Four
Transmission Diesel electric
Performance figures
Maximum speed 75 km/h (47 mph)
Power output 620 kW (831 hp)
Career
Operators SBB-CFF-FFS
Numbers 18401–18446
Withdrawn From 2006

The Bm 4/4 is a heavy diesel shunter built for Swiss Federal Railways. 46 examples were built between 1960 and 1970, and a number remain in service. The class is currently being replaced by new Vossloh locomotives.

See also[edit]