Baden III b

The Baden Class III b engines were German steam locomotives designed for hauling passenger trains for the Grand Duchy of Baden State Railway (Großherzoglich Badische Staatseisenbahn). In this class the Baden state railway grouped rebuilt locomotives of former classes III and III a.

Baden III b
Quantity	about 70
Year(s) of manufacture	1881–1891
Wheel arrangement	4-4-0
Axle arrangement	2′B n2
Track gauge	1,435 mm (4 ft 8 ^1⁄2 in)
Length over buffers	14,082–14,332 mm (46 ft 2 ^1⁄2 in–47 ft ^1⁄4 in)
Height	4,150 mm (13 ft 7 ^1⁄2 in)
Overall wheelbase	4,500 mm (14 ft 9 ^1⁄4 in)
Adhesive weight	19.00 t (18.70 long tons; 20.94 short tons)
Driving wheel diameter	1,830 mm (6 ft 0 in)
Carrying wheel diameter	950 mm (3 ft 1 ^3⁄8 in)
Heating tube length	3,188–3,388 mm (10 ft 5 ^1⁄2 in–11 ft 1 ^1⁄2 in)
Grate area	1.31 m^2 (14.1 sq ft)

Seventy engines of Baden classes III and III a were rebuilt between 1881 and 1891. They were all given a new, more powerful, three-ring boiler with a larger grate area. Because this was longer than the original boilers, the frame of the Class III had to be extended (on the Class IIIa it was long enough) and a buffer beam built onto the front.

The boiler had a Belpaire firebox with a somewhat higher top surface. A larger steam dome was fitted on top of the rear boiler ring.

Further reading

• Lokomotiv-Archiv Baden, Hermann Lohr, Georg Thielmann, transpress Berlin, ISBN 3-344-00210-4, 1988, pp 82–88.

See also

• Grand Duchy of Baden State Railway
• List of Baden locomotives and railbuses