Sentetsu Puresa-class locomotives

Power typeSteam

Power typeSteam

BuilderBorsig

Build date1912

Chosen Government Railway Puresa class (プレサ) Korean National Railroad Pureo3 class (푸러3) Korean State Railway Purŏsŏ class (부러서)
Sentetsu プレ283 as built, later プレサ3
Type and origin Power type Steam Builder Borsig Build date 1912 Total produced 14
Specifications Configuration: ​  • Whyte 2-6-2T Gauge 1,435 mm (4 ft 8+1⁄2 in) Driver dia. 1,370 mm (54 in) Length 10,338 mm (33 ft 11.0 in) Width 3,000 mm (9 ft 10 in) Height 3,880 mm (12 ft 9 in) Adhesive weight 37.00 t (36.42 long tons) Loco weight 52.00 t (51.18 long tons) Fuel capacity 1.25 t (1.23 long tons) Water cap. 5,900 L (1,600 US gal) Firebox: ​  • Grate area 1.69 m2 (18.2 sq ft) Boiler: ​  • Small tubes 177 x 51 mm (2.0 in) Boiler pressure 11.5 kgf/cm2 (164 psi) Heating surface: ​  • Firebox 9.50 m2 (102.3 sq ft)  • Tubes 89.60 m2 (964.4 sq ft)  • Total surface 99.10 m2 (1,066.7 sq ft) Cylinders 1 Cylinder size 410 mm × 610 mm (16 in × 24 in) Valve gear Walschaerts
Performance figures Maximum speed 75 km/h (47 mph) Tractive effort 72.1 kN (16,200 lbf)
Career Operators Chosen Government Railway Korean National Railroad Korean State Railway Class Sentetsu: プレサ KNR: 푸러3 KSR: 부러서 Number in class Sentetsu: 14 Numbers Sentetsu: プレサ1–プレサ14 Delivered 1912

The Puresa-class (プレサ) locomotives were a group of steam tank locomotives with 2-6-2 wheel arrangement of used by the Chosen Government Railway (Sentetsu) in Korea. The "Pure" name came from the American naming system for steam locomotives, under which locomotives with 2-6-2 wheel arrangement were called "Prairie".^[1]

In all, Sentetsu owned 227 locomotives of all Pure classes, whilst privately owned railways owned another 52; of these 279 locomotives, 169 went to the Korean National Railroad in South Korea and 110 to the Korean State Railway in North Korea.^[2]