DRG Class 02

The steam locomotives of Class 02 were Unity express locomotives of the Deutsche Reichsbahn (DR ) with a four - cylinder compound engine. 02 001 was the first completed unit steam locomotive of the DR

The German Reichsbahn resulted in obtaining a unit express train steam locomotive a comparison of a steam - twin design (Series 01) with a four-cylinder compound type (Series 02) by. Ten advance copies of both types were built from 1925 onwards; the vehicles of the Series 02 were given the operating numbers 02001-02 010 The first eight locomotives were built in 1925 by the firm of Henschel, two more in 1926 by Maffei.

Since the steam engine of the series was 02 designed insufficient, the compound steam engine was able to develop an engaging, higher power only at speeds above 70 km / h; below 1000 PSI steam consumption also was higher than in the series 01 - a point of criticism.

Since the vehicles also compared to the 01 series had a more complicated and designed to be maintenance more sophisticated engine, they were not further prepared. From 1937 to 1942, the vehicles were successively rebuilt in RAW Meiningen on two-cylinder engines and classified with numbers 01 011 and 01233-01241 in the Series 01:

The comparison operation of the locomotives of the series 01 and 02 took place in the Bahnbetriebswerke Erfurt P, Hamm and yard. Already in the late 1920s were all concentrated in 02 Bw yard, the experience with the operation of Vierzylinderverbundloks possessed ( Bavarian S 3/6 / DR 18.4-5 or Saxon XII HR / DR 17.7 ). But for the Bw court first had to give back his 01. Even after the conversion remained the locomotives in yard, so that they all at the German Federal Railroad ( DB) came after the war. The last former 02 - to 01 234, conversion from 02 003 - was retired on 8 May 1972 in the yard.

The vehicles had been delivered as a temporary solution in some cases (?) With a Tender of type 2'2 T 30. Later they were all equipped with a Tender of type 2'2 T 32.