Class K-4sa
Country USA
Railroad Line Pennsylvania Railroad (PRR)
Wheel Arrangement 2'C1' h2   Boiler Pressure 14.4 kp/cm
Tender 2'2' Grate Area 6.5 m
Driving Wheel 2030 mm

Heating Surface Area

376 m
Leading Wheel 914 mm Superheater Area 87.7 m
Trailing Wheel 1270 mm Cylinder 685 mm
Length (over all) mm Piston Stroke 711 mm
Max. Speed (Design) km/h Max. Axle Loading 32.3 Mp
Max. Speed (achieved) km/h Weight on drivers 95.1 Mp
Power 3500 hpi Weight (total) Mp
Fuel Coal Power Transmission Rods
Gauge 1435 mm Tractive Effort    20.2 Mp
First Bldg. Year

1920 (1939 streamlined)

  Number built

5