PKP class ST40

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PKP ST40/NeWag 311Da
311D-15 PCCR KWK Janina 20080510.jpg
PCC Rail 311D-14 at KWK Janina
Type and origin
Power typeDiesel
BuilderNewag Poland
Build date2007-200?
 • UICCo-Co
Gauge1,520 mm (4 ft 11 2732 in) (PKP LHS)
1,435 mm (4 ft 8 12 in) (other operators)
Length17.55 m
Width2.95 m
Height4.62 m
Engine typeGE 7FDL 12 EFI
Traction motorsGE ED 118A
Safety systemsSHP
Performance figures
Maximum speed100 km/h
Power output2,133 kW
OperatorsPKP LHS/KB/PCC Rail
Number in class6 (PKP LHS)
5 (Kolej Bałtycka)
15 (DB Schenker Rail Polska)
Nicknames"Robocop", "Transformer"
First run2007
Dispositionin service

PKP Class ST40 is a new class of cargo diesel-electric locomotives used by the PKP LHS broad-gauge division and various Polish private operators, designated 311D (standard gauge) or 311Da (broad gauge) by its manufacturer, Newag. The class is a heavily reconstructed Russian M62 (PKP ST44), using only the underframe. The body is new, the main engine is a General Electric GE 7FDL12. Original engines were also modernized, as ED118 A GE. The class is much more economical and modern than a basic M62. The body has external walkways instead of an internal passage connecting the cabs. The first locomotive was modernized in 2007. As of January 2009, there were 20 class 311D completed (15 for PCC Rail and five for the Baltic Railways) and six 311Da for PKP LHS, where they are designated ST40.


The locomotive is a modernisation of the popular Soviet locomotive M62 (ST44), which can be noticed by the chassis structure and carriages. The drive unit has been completely changed by installing a more efficient engine by the General Electric company which is placed in one place together with the main generator, compressor and fan. The most visible change is the complete change of the structure, the internal passageway between the cabins, having a driver's cab at each end and that the train has transitions outside with the jetties. By using the graft this has improved access to the engine.[clarification needed] The front of the locomotive has been changed, giving a new look. The cabin has a new design and provides better working conditions.


  • Pokropiński, Bogdan (2009). Lokomotywy spalinowe produkcji polskiej. Warsaw: WKiL. ISBN 978-83-206-1731-3.

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