DRG Class 87

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DRG Class 87
Number(s) DRG 87 001–016
Quantity 16
Manufacturer Orenstein & Koppel
Year(s) of manufacture 1927–1928
Retired 1951–1956
Wheel arrangement 0-10-0T
Axle arrangement E
Type Gt 55.17
Track gauge 1,435 mm (4 ft 8 12 in)
Length over buffers 13,300 mm
Service weight 85.6 t
Adhesive weight 85.6 t
Axle load 17.4 t
Top speed 45 km/h
Indicated Power 691 kW
Cylinder bore 600 mm
Piston stroke 550 mm
Boiler Overpressure 14 bar
Grate area 2.39 m2
Superheater area 47.00 m2
Evaporative heating area 117.37 m2

The German Class 87 was a standard (see Einheitsdampflokomotive) goods train tank locomotive with the Deutsche Reichsbahn-Gesellschaft (DRG). It was specifically designed by the firm of Orenstein & Koppel for use in Hamburg Harbour. The harbour lines had minimal curve radii of only 100 m and high train loads to be moved. The axle load had to be no more than 17,5 tons. These requirements resulted in an axle count of five axles. In order to keep wear and tear on the running gear within acceptable limits only the middle three wheelsets were linked by coupling rods, the two Luttermöller outside axles were driven by cogs.

Due to damage the vehicles were partly also operated as 1'D, D1' or 1'C1' engines.

From 1951 they were superseded by DB Class 82 locomotives.

See also[edit]