Polish State Railways SM31 and Fablok 411D
Poland 1976 197 produced
The SM31, called type 411D by its manufacturer Fablok, is a six-axle diesel locomotive designed for heavy shunting and transfer service. Based on the four-axle SM42, it has a more powerful variant of the same engine with 1,200 instead of 800 hp. After the first two prototypes were bought by industrial operators, 167 locomotives were delivered to PKP until 1985. 28 more were directly built for industrial operators and designated Ls1200. Today, the last operational ones are still being used for shunting and freight trains over short distances.
Technical data
General
- Built
- 1976-1985
- Manufacturers
- Fablok
- Wheel arrangement
- C-C
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Length
- 17.00 m
- Service mass
- 116.4 t
- Adhesion mass
- 116.4 t
- Axle load
- 19.4 t
Power plant
- Engine
- a8C22W
- Engine type
- V8 diesel
Power
- Power source
- diesel-electric
- Indicated power
- 880 kW (1,196 PS)
- Top speed
- 80 km/h
- Starting effort
- 360.0 kN
Calculated values
- Factor of adhesion
- 1 : 3.17
- Power-to-weight ratio
- 7.6 kW/t
- Adhesive weight/Total
- 1 : 1.00
