NMBS/SNCB Class 73

The Class 73 is a class of diesel locomotives operated by SNCB/NMBS in Belgium.

Class 73
Former NMBS/SNCB Class 73 loco 7304 at Mariemburg CF3V, 24 September 2005.
Type and origin
Power typeDiesel
BuilderBN
Build date1965-1977 (three batches)
Total produced95
Specifications
Configuration:
  Whyte0-6-0
Gauge1,435 mm (4 ft 8 12 in)
Driver dia.1,262 mm (4 ft 1.7 in)
Length11.4 m (37 ft 5 in)
first batch 11.17 m (36 ft 8 in)
Adhesive weight9.33 t
Loco weight56 t
Fuel typediesel
Prime moverCockerill 6TH695SA or 6T240CO
TransmissionVoith hydraulic
Performance figures
Maximum speed30 or 60 km/h (19 or 37 mph)
Power output550 kW
Tractive effort211 kN
Career
OperatorsSNCB/NMBS
Class73
Numbers7301-7395
Dispositionin service

The class formed the backbone of the SNCB shunter fleet. Class 77s have replaced them but they are still to be found across Belgium. They were built in three batches: 7301-7335 during 1965–1967, 7336-7375 during 1973-1974 and finally 7373–7395 in 1976–1977.

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