PKP class SM25

The PKP SM25 series was a shunting locomotive of the Polish railway PKP.

History

Since 1959, the Polish Railway planned a diesel locomotive with a diesel- hydraulic drive to build. The use of diesel-hydraulic power transmission was already provided for the parallel developed railcar SN80. The SM25 series was made ​​in 1961 the first Polish locomotive with hydraulic power transmission. By 1963, a total of three specimens were prepared in the Polish Fablok plants in Chrzanów. The production of other locomotives in 1963 discarded because there were problems when importing gear from the German company Voith. They were given the vehicle numbers SM25 -001, SM25 and SM25 -002 -003.

All three locomotives were stationed in Krakow and used from there for shunting. In 1973 they were retired and shut down. SM25 -002 was the railway museum Warsaw passed and exhibited there.

Construction and Technology

A locomotive of the SM25 series consists of a frame, the attached drive and the superstructure. The drive consists of three sets of wheels, each with two wheels. The wheel diameter is 1100 mm. The wheelsets are driven by a jackshaft mounted on a rod.

On Lokomotiv frame screw couplers and brake hoses front and rear mounted. In addition, two buffers and lanterns are mounted. There are a total of four brakeman available.

In the context of the structures are in place. These consist of two stems and a centrally arranged cab with cab. This can be accessed by two located on the side doors. He is equipped to respect the then latest findings Occupational safety and comfort. Among the Stems are the engine, transmission, cooling elements and other aggregates. The diesel engine of the type Wola 1DVSa/31-350 has an output of 257 kW. The power is transmitted to a fluid transmission from the German manufacturer Voith.

The 37 -ton locomotives are braked by a brake type Oerlikon and a hand brake. The speed limit is 60 km / h