PKP class SM48

SM48
SM48/TEM2 locomotive at the station Skawina in Poland
Type and origin Power type Diesel-electric Builder USSR Model ТЭМ2 (TEM2) Build date 1976
Specifications Configuration: ​  • UIC Co'Co' Gauge 1,435 mm (4 ft 8 1⁄2 in) standard gauge Driver dia. 1,050 mm (41.34 in) Length 16.97 m (55 ft 8 in) Width (?) Height 4.44 m (14 ft 7 in) Loco weight 116 t (114 long tons; 128 short tons) Fuel capacity 4,590 l (1,010 imp gal; 1,210 US gal) Prime mover PD1M Engine type (?) Cylinders 6 Cylinder size (?) Transmission Diesel electric Loco brake Matrosow Train brakes Air
Performance figures Maximum speed 100 km/h (62 mph) Power output 883 kW (1,184 hp) Tractive effort 372.65 kN (83,780 lbf)
Career Operators PKP Class SM48 Nicknames Walentyna Tamara

SM48 is the name for class of Soviet diesel locomotives operating in Poland for PKP. The original designation was ТЭМ2 (TEM2), and was the Soviet-built version of the ALCO RSD-1.

The SM48 was originally put into service on the eastern Polish railways, where 1,524 mm (5 ft) Russian broad gauge railways were still in use. In fact, the locomotive coped well with the structure gauge on standard gauge lines.

Since 1976, PKP have bought 130 SM48 locomotives. There are also locos in service with other Polish operators: PCC Rail, PTKiGK Zabrze, Kopalnia Piasku Kotlarnia.

Starting from 2010, several locomotives undergo a modernization to ST48 standard.