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Locomotive-Specs
SAAS Bm 4/4 – photo 1© trainspo.com
Diesel locomotive

SAAS Bm 4/4

Built by SLM, SAAS

Top speed
75 km/h
47 mph
Power output
620 kW
831 hp
Weight
72 t
158,733 lb
Track gauge
1,435 mm
Standard gauge
Years built
1960–1970
46 units
Axle arrangement
Bo'Bo'

Overview of the SAAS Bm 4/4

Discover the Bm 4/4 diesel locomotive, a powerful and versatile machine built between 1960 and 1970.

This locomotive boasts a top speed of 75 km/h and a weight of 72 tons, powered by a 620 kW diesel engine. Its standard 1435 mm gauge and Bo'Bo' UIC classification ensure adaptability to various railway lines.

Originally operated by the Swiss Federal Railways (SBB) as the SBB Bm 4/4, it also served Marti AG in Switzerland under the designation Marti Bm 840.

The Bm 4/4 stands as a notable example of Swiss railway engineering, recognized for its reliable and robust service history.

SAAS Bm 4/4 technical specifications

Value
Built bySLM, SAAS · 1960–197046 units
Top speed75 km/h47 mph
Power output620 kW831 hp
Track gauge1,435 mmStandard gauge4 ft 8½ in
UIC axle arrangementBo'Bo'
Weight72 t158,733 lb
Source of the data: en.wikipedia.orgView this model on trainspo.com Spotted an error? Let us know

Operators of the SAAS Bm 4/4

Railway companies that have operated the Bm 4/4, with the class designation used by each of them.

OperatorClassCountry
Marti AGMarti Bm 840Switzerland
Swiss Federal RailwaysSBB Bm 4/4Switzerland

SAAS Bm 4/4 photos

Photos © their respective authors, shared on trainspo.com. They may show liveries or variants that differ from the specifications above.

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