Prussian T 37

The Prussian T 37s were German steam locomotives operated by the Prussian state railways. They replaced the smaller 0-6-0T locomotives on the railway line between Beuthen and Kattowitz. In all 18 engines were supplied to Prussia, of which eight were taken over by the Reichsbahn and given numbers 99 401 to 99 408. They were all withdrawn by 1939 and scrapped.

Prussian T 37 DRG Class 99.40
Number(s)	99 401–408
Quantity	18
Manufacturer	Hartmann Orenstein & Koppel Maschinenfabrik Christian Hagans
Year(s) of manufacture	1904–1912
Retired	1939
Wheel arrangement	0-8-0T
Axle arrangement	D n2t
Type	K 44.7
Track gauge	785 mm (2 ft 6 ^29⁄32 in)
Length over buffers	8,520 mm (27 ft 11 ^1⁄2 in)
Service weight	27.9 tonnes (27.5 long tons; 30.8 short tons)
Adhesive weight	27.9 t
Top speed	25 km/h (16 mph)
Driving wheel diameter	810 millimetres (2 ft 7 ^7⁄8 in)
Valve gear	Walschaerts (Heusinger)
No. of cylinders	2
Cylinder bore	340 mm (13 ^3⁄8 in)
Piston stroke	400 mm (15 ^3⁄4 in)
Boiler Overpressure	13 bar (1.30 MPa; 189 psi)
Grate area	1.00 m^2 (10.8 sq ft)
Evaporative heating area	49.21 m^2 (529.7 sq ft)
Water capacity	2,500 litres (550 imp gal; 660 US gal)
Fuel	Coal: 1.3 tonnes (1.28 long tons; 1.43 short tons)

These locomotives were equipped with Klien-Lindner axles at each end. They had an outside frame and the third wheelset was driven. They also had an outside Walschaerts valve gear. The engines could carry 1.3 tonnes of coal and 2.5 m² of water. The coal tank was located behind the driver's cab.

See also

• List of Prussian locomotives and railcars
• Prussian state railways