DRG Class 45

DRG Class 45
45 010 in the DB Museum, Nuremberg
Type and origin
Power typeSteam
Order numberHenschel & Sohn
Serial number22805–22806, 24796–24821
Build date1937–1940
Total produced28
Specifications
Configuration:
 • Whyte2-10-2
 • UIC1′E1′ h3
 • GermanG 57.18 (also G 57.20)
DriverDivided: inner cylinder on 2nd coupled axle, outer on 3rd
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.1,000 mm (3 ft 3+38 in)
Driver dia.1,600 mm (5 ft 3 in)
Trailing dia.1,250 mm (4 ft 1+14 in)
Wheelbase:
 • Axle spacing
(Asymmetrical)
  • 3,000 mm (9 ft 10+18 in) +
  • 1,850 mm (6 ft 78 in) +
  • 1,850 mm (6 ft 78 in) +
  • 1,850 mm (6 ft 78 in) +
  • 1,850 mm (6 ft 78 in) +
  • 3,200 mm (10 ft 6 in) =
 • Engine13,600 mm (44 ft 7+38 in)
 • Tender
  • 1,750 mm (5 ft 8+78 in) +
  • 1,500 mm (4 ft 11 in) +
  • 1,375 mm (4 ft 6+18 in) +
  • 1,375 mm (4 ft 6+18 in) =
  • 6,000 mm (19 ft 8+14 in)
 • incl. tender21,775 mm (71 ft 5+14 in)
Length:
 • Over headstocks24,345 mm (79 ft 10+12 in)
 • Over buffers25,645 mm (84 ft 1+58 in)
Axle load
  • 001–002: 18.6 or 19.9 t (18.3 or 19.6 long tons; 20.5 or 21.9 short tons)
  • Remainder: 18.2 or 19.8 t (17.9 or 19.5 long tons; 20.1 or 21.8 short tons)
  • Rebuilt: 18.2–18.6 or 19.4–19.9 t (17.9–18.3 or 19.1–19.6 long tons; 20.1–20.5 or 21.4–21.9 short tons)
Adhesive weight
  • 001–002: 92.9 or 99.4 t (91.4 or 97.8 long tons; 102.4 or 109.6 short tons)
  • Remainder: 90.7 or 98.8 t (89.3 or 97.2 long tons; 100.0 or 108.9 short tons)
  • Rebuilt: 91.0–93.0 or 97.2–99.7 t (89.6–91.5 or 95.7–98.1 long tons; 100.3–102.5 or 107.1–109.9 short tons)
Empty weight
  • 001–002: 117.5 t (115.6 long tons; 129.5 short tons)
  • Remainder: 114.7 t (112.9 long tons; 126.4 short tons)
  • Rebuilt: 112.3–114.4 t (110.5–112.6 long tons; 123.8–126.1 short tons)
Service weight
  • 001–002: 128.4 t (126.4 long tons; 141.5 short tons)
  • Remainder: 126.7 t (124.7 long tons; 139.7 short tons)
  • Rebuilt: 125.5–128.5 t (123.5–126.5 long tons; 138.3–141.6 short tons)
Tender type
  • New: 2′3 T 38
  • Rebuilt: 2′3 T 29
Fuel typeCoal
Fuel capacity
  • 2′3 T 38: 10 t (9.8 long tons; 11 short tons)
  • 2′3 T 29: 12 t (12 long tons; 13 short tons)
Water cap.
  • 2′3 T 38: 38 m3 (8,360 imp gal; 10,000 US gal)
  • 2′3 T 29: 29 m3 (6,380 imp gal; 7,660 US gal)
Firebox:
 • Grate area
  • 001–002: 5.0 m2 (54 sq ft)
  • Remainder: 4.8 m2 (52 sq ft)
  • Rebuilt: 4.5 m2 (48 sq ft)
Boiler:
 • Pitch3,060 mm (10 ft 12 in)
 • Tube plates
  • New: 7,500 mm (24 ft 7+14 in)
  • Rebuilt: 6,500 mm (21 ft 3+78 in)
 • Small tubes
  • 001–002: 83 mm (3+14 in), 72 off
  • Remainder: 79 mm (3+18 in), 98 off
  • Rebuilt: 60 mm (2+38 in), 106 off
 • Large tubes
  • 001–002: 191 mm (7+12 in), 33 off
  • Remainder: 185 mm (7+516 in), 30 off
  • Rebuilt: 152 mm (6 in), 44 off
Boiler pressure
  • new: 20 bar (20.4 kgf/cm2; 290 psi)
  • later: 16 bar (16.3 kgf/cm2; 232 psi)
Heating surface:
 • Firebox
  • 001–002: 18.8 m2 (202 sq ft)
  • Remainder: 18.7 m2 (201 sq ft)
  • Rebuilt: 23.2 m2 (250 sq ft)
 • Tubes
  • 001–002: 130.0 m2 (1,399 sq ft)
  • Remainder: 168.5 m2 (1,814 sq ft)
  • Rebuilt: 116.9 m2 (1,258 sq ft)
 • Flues
  • 001–002: 140.2 m2 (1,509 sq ft)
  • Remainder: 123.3 m2 (1,327 sq ft)
  • Rebuilt: 128.9 m2 (1,387 sq ft)
 • Total surface
  • 001–002: 289.0 m2 (3,111 sq ft)
  • Remainder: 310.5 m2 (3,342 sq ft)
  • Rebuilt: 269.0 m2 (2,895 sq ft)
Superheater:
 • Heating area
  • 001–002: 132.5 m2 (1,426 sq ft)
  • Remainder: 120.6 m2 (1,298 sq ft)
  • Rebuilt: 120.6 m2 (1,298 sq ft)
CylindersThree
Cylinder size520 mm × 720 mm (20+12 in × 28+38 in)
Valve gearHeusinger
Valve typePiston Valve
Train heatingSteam
Loco brakeKnorr Air Brakes steam
Train brakesKnorr Air Brakes
CouplersScrew Link
Performance figures
Maximum speed90 km/h (56 mph)
Indicated power2,800 PS (2,060 kW; 2,760 hp)
3,020 PS (2,220 kW; 2,980 hp) (45 003)
Career
Numbers45 001 – 45 028
Retired1946–1968

German Class 45 steam locomotives were standard locomotives (Einheitslokomotiven) designed by the Deutsche Reichsbahn for hauling goods trains.