DRG Class 87
Type and origin
BuilderOrenstein & Koppel
Build date1927–1928
Total produced16
Specifications
Configuration:
​
 • Whyte0-10-0T
 • GermanGt 55.17
Gauge1,435 mm (4 ft 8+1⁄2 in)
Driver dia.1,100 mm (3 ft 7+1⁄4 in)
Length:
​
 • Over beams13,300 mm (43 ft 7+1⁄2 in)
Axle load17.4 tonnes (17.1 long tons; 19.2 short tons)
Adhesive weight85.6 tonnes (84.2 long tons; 94.4 short tons)
Empty weight68 tonnes (67 long tons; 75 short tons)
Service weight85.6 tonnes (84.2 long tons; 94.4 short tons)
Fuel capacityCoal: 3 tonnes (3.0 long tons; 3.3 short tons)
Water cap.9 m3 (320 cu ft) pr 9,000 litres (2,000 imp gal; 2,400 US gal)
Boiler:
​
No. of heating tubes110
No. of smoke tubes26
Heating tube length4,500 mm (14 ft 9+1⁄4 in)
Boiler pressure14 bar (1.40 MPa; 203 psi)
Heating surface:​
 • Tubes107.27 m2 (1,154.6 sq ft)
 • Firebox2.39 m2 (25.7 sq ft)
 • Radiative10 m2 (110 sq ft)
 • Evaporative117.37 m2 (1,263.4 sq ft)
Superheater:
​
 • Heating area47.00 m2 (505.9 sq ft)
CylindersTwo
Cylinder size600 mm (23+5⁄8 in)
Piston stroke550 mm (21+5⁄8 in)
Performance figures
Maximum speed45 km/h (28 mph)
Indicated power691 kW (939 PS; 927 hp)
Career
NumbersDRG 87 001 – 87 016
Retired1951–1956

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 metres (330 ft) and high train loads to be moved. The axle load had to be no more than 17.5 tonnes (17.2 long tons; 19.3 short 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From 1951 they were superseded by DB Class 82 locomotives.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

References

    • Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. pp. 292–294. ISBN 978-3-946594-21-5.
    • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1978). Dampflokomotiven deutscher Eisenbahnen, Baureihe 60–96 (EFA 1.3) (in German) (4th ed.). Düsseldorf: Alba. pp. 121–123. ISBN 3-87094-083-2.
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