PKP class SM04

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SM04
SM04-002 at Chabówka Railway Museum
Type and origin Power type Diesel Builder Zastal  POL Model 409Da Build date 1972, 1978 Total produced 2
Specifications Configuration: ​  • AAR B Gauge 1,435 mm (4 ft 8+1⁄2 in) Driver dia. 950 mm Length 6,940 mm Width 2,970 mm Height 3,380 mm Loco weight 24 T Fuel capacity 250 l Engine type 10H6/14H6 Cylinders 6 Transmission Mechanical Loco brake Knorr
Performance figures Maximum speed 25.7 km/h (Ls150) 45.8 km/h (2LS150) Power output 133 kW Tractive effort 58.5 kN
Career Operators PKP Class SM04 Locale  POL Poland Delivered 1972, 1978

The SM04 (factory designation 409Da) is a low power, Polish built shunter, formerly operated by PKP (Polish National Railways) and is an improved version of the SM03.