SBB-CFF-FFS Am 6/6

The Am 6/6, later known as Am 861, is a class of diesel shunting locomotive which were built for the Swiss Federal Railways (SBB) and were intended for use as heavy hump shunters at the Limmattal classification yard.[1][2]

SBB-CFF-FFS Am 6/6
Type and origin
Power typeDiesel
BuilderThyssen Henschel, Brown, Boveri & Cie
Build date1976
Total produced6
Specifications
Configuration:
  AARC-C
  UICCo′Co′
Gauge1,435 mm (4 ft 8+12 in)
BogiesFlexifloat
Driver dia.1,040 mm (3 ft 5 in)
Wheelbase12.2 metres (40 ft)
Length17.4 metres (57 ft)
Height4.5 metres (15 ft)
Axle load18.5 t (41,000 lb)
Loco weight111 t (245,000 lb)
Traction motors(6)
TransmissionDiesel-electric
Performance figures
Maximum speed85 km/h (53 mph)
Power output1,440 kW (1,930 hp)
Career
OperatorsSBB-CFF-FFS
ClassAm 6/6, later Am 861
Numbers18521–18526
LocaleLimmattal classification yard
DispositionAll withdrawn

A total of six locomotives were built jointly by Thyssen Henschel and Brown, Boveri & Cie for SBB by and these received running numbers 18521 to 18526. In the late 1990s they received modernized electrical systems

The locomotives utilized a Co′Co′ wheel arrangement and a diesel-electric transmission, had six three-phase asynchronous traction motors and Flexifloat bogies (bogies without pivots and cradles) while being powered by 1.440 kW (1,930 hp) diesel engines.[3]

In January 2004 locomotive 18524 was withdrawn to serve as a parts donor for the remainder of the class. The other five locomotives continued in service with SBB until March 2020, by which point the remainder were withdrawn from service. As of April 2020 these locomotives are awaiting to be scrapped.

See also

References

  1. "Bouwserie Am 6/6 - 3rail Wiki". wiki.3rail.nl. Retrieved 2022-08-15.
  2. "SBB-Cargo diesel locomotives". Railfaneurope.net. Archived from the original on 14 July 2011. Retrieved 28 September 2009.
  3. "SBB Am 6/6 — Trainspo". trainspo.com. Retrieved 2022-08-17.


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