Class K-4s
Country USA
Railroad Line Pennsylvania Railroad (PRR)
Wheel Arrangement 2'C1' h2   Boiler Pressure 14.4 kp/cm
Tender 3'3' 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 Mp
Max. Speed (achieved) 153 km/h Weight on drivers Mp
Power 3500 hpi Weight (total) 283 Mp
Fuel Coal Power Transmission Rods
Gauge 1435 mm Tractive Effort    20.2 Mp
First Bldg. Year

1920 (1936 streamlined)

  Number built

1