DRB Class 01.10

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DRB Class 01.10 DB Class 011, 012
Preserved 01 1102 with restored streamlining
Type and origin Power type Steam Builder Berliner Maschinenbau Serial number 11000, 11308–11361 Build date 1939–1940 Total produced 55
Specifications Configuration: ​  • Whyte 4-6-2  • UIC 2′C1′ h3  • German S 36.20 Driver Divided: inside cylinder on 1st, outside cylinders on 2nd Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 1,000 mm (3 ft 3+3⁄8 in) Driver dia. 2,000 mm (6 ft 6+3⁄4 in) Trailing dia. 1,250 mm (4 ft 1+1⁄4 in) Tender wheels 1,000 mm (3 ft 3+3⁄8 in) Wheelbase: ​  • Axle spacing (Asymmetrical) 2,200 mm (7 ft 2+5⁄8 in) + 1,800 mm (5 ft 10+7⁄8 in) + 2,300 mm (7 ft 6+1⁄2 in) + 2,300 mm (7 ft 6+1⁄2 in) + 3,800 mm (12 ft 5+5⁄8 in)  • Engine 12,400 mm (40 ft 8+1⁄4 in)  • Tender 6,000 mm (19 ft 8+1⁄4 in)  • incl. tender 20,370 mm (66 ft 10 in) Length: ​  • Over headstocks 22,830 mm (74 ft 10+3⁄4 in)  • Over buffers 24,130 mm (79 ft 2 in) Axle load 20.1 tonnes (19.8 long tons; 22.2 short tons) Adhesive weight 60.2 tonnes (59.2 long tons; 66.4 short tons) Empty weight 103.1 tonnes (101.5 long tons; 113.6 short tons) Service weight 114.3 tonnes (112.5 long tons; 126.0 short tons) Tender type 2′3 T 38 Fuel capacity 10.0 tonnes (9.8 long tons; 11.0 short tons) coal or 13,500 L (2,970 imp gal; 3,570 US gal) fuel oil Water cap. 38.0 m3 (8,400 imp gal; 10,000 US gal) Firebox: ​  • Grate area 4.32 m2 (46.5 sq ft) Boiler: ​  • Tube plates 6,800 mm (267+11⁄16 in)  • Small tubes 70 mm (2+3⁄4 in), 106 off  • Large tubes 171 mm (6+3⁄4 in), 24 off Boiler pressure 16 bar (16.3 kgf/cm2; 232 psi) Heating surface: ​  • Firebox 16.9 m2 (182 sq ft)  • Tubes 147 m2 (1,580 sq ft)  • Flues 83 m2 (890 sq ft)  • Total surface 246.9 m2 (2,658 sq ft) Cylinders Three Cylinder size 500 mm × 660 mm (19+11⁄16 in × 26 in) Valve gear Walschaerts (Heusinger) Loco brake Knorr, single-chamber, compressed air brakes acting on both sides of coupled wheels + compressed air quick-acting brakes on driving and tender wheels
Performance figures Maximum speed Forwards: 150 or 140 km/h (93 or 87 mph) Reverse: 50 km/h (31 mph) Indicated power 1,559 kW (2,120 PS; 2,090 hp) 1,728 kW (2,350 PS; 2,320 hp) (coal, with Austausch boiler) 1,817 kW (2,470 PS; 2,440 hp) (oil, with Austausch boiler)
Career Numbers DRG: 01 1001, 01 1052 – 01 1105 DB (from 1968): 011 062-7 ... 011 099-9, 012 001-4, 012 052-7 ... 012 105-3 Retired 1975 Disposition 10 preserved, remainder scrapped

The Deutsche Reichsbahn Class 01.10 was a series of express steam locomotives. Developed at the end of the 1930s it was part of the standard locomotive programme (Einheitsdampflokomotiven). Modernized in the 1950s, the class lasted almost until the end of steam operation at the West German Deutsche Bundesbahn (DB).