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.

DRG Class 87
87 008
Type and origin
Power typeSteam
BuilderOrenstein & Koppel
Serial number11231–11238, 11411–11415, 11551–11553
Build date1927–1928
Total produced16
Specifications
Configuration:
 • Whyte0-10-0T
 • UICE h2t
 • GermanGt 55.17
Gauge1,435 mm (4 ft 8+12 in)
Driver dia.1,100 mm (3 ft 7+14 in)
Wheelbase:
 • Axle spacing
(Asymmetrical)
  • 1,400 mm (4 ft 7+18 in) +
  • 1,800 mm (5 ft 10+78 in) +
  • 1,600 mm (5 ft 3 in) +
  • 1,400 mm (4 ft 7+18 in) =
 • Engine6,200 mm (20 ft 4+18 in)
Length:
 • Over headstocks12,000 mm (39 ft 4+12 in)
 • Over buffers13,300 mm (43 ft 7+58 in)
Height4,165 mm (13 ft 8 in)
Axle load17.1 t (16.8 long tons; 18.8 short tons)
Adhesive weight85.6 t (84.2 long tons; 94.4 short tons)
Empty weight68.0 t (66.9 long tons; 75.0 short tons)
Service weight85.6 t (84.2 long tons; 94.4 short tons)
Fuel typeCoal
Fuel capacity3.0 t (3.0 long tons; 3.3 short tons)
Water cap.9 m3 (1,980 imp gal; 2,380 US gal)
Firebox:
 • Grate area2.34 m2 (25.2 sq ft)
Boiler:
 • Pitch2,700 mm (8 ft 10+14 in)
 • Tube plates4,500 mm (14 ft 9+18 in)
 • Small tubes44.5 mm (1+34 in), 110 off
 • Large tubes133 mm (5+14 in), 26 off
Boiler pressure14 bar (14.3 kgf/cm2; 203 psi)
Heating surface:
 • Firebox10.0 m2 (108 sq ft)
 • Tubes61.4 m2 (661 sq ft)
 • Flues45.9 m2 (494 sq ft)
 • Total surface117.3 m2 (1,263 sq ft)
Superheater:
 • Heating area47.0 m2 (506 sq ft)
CylindersTwo, outside
Cylinder size600 mm × 550 mm (23+58 in × 21+58 in)
Performance figures
Maximum speed45 km/h (28 mph)
Indicated power940 PS (691 kW; 927 hp)
Career
Operators
Numbers87 001 – 87 016
Retired1951–1956

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From 1951 they were superseded by DB Class 82 locomotives.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

References

edit
  • 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.