The reference for locomotives and railcars
US Railroad Administration Heavy Santa Fé
United States | 1918 | 175 produced
Pennsylvania Rairoad N2sa No. 8110 in 1933 in Columbus, Ohio
Pennsylvania Rairoad N2sa No. 8110 in 1933 in Columbus, Ohio
collection Taylor Rush
Schematic drawing with dimensions
Schematic drawing with dimensions
1922 Locomotive Cyclopedia of American Practice

The USRA standard model for heavy, slow coal trains was the Heavy Santa Fé. ALCO-Brooks delivered 135 and Baldwin 40 more. By far the largest number were the 130 members of the Pennsylvania Railroad's class N2s. The locomotives were generally considered a successful design that fulfilled their tasks satisfactorily. As early as 1923, the PRR rebuilt them with new boilers with Belpaire fireboxes and renamed them class N2sa. A fundamental problem with the Heavy Santa Fé was the very long frame, which was not cast in one piece. This warped over time, leading to increased maintenance costs.

ManufacturerALCO, Baldwin
Axle config2-10-2 (Santa Fé) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length loco55 ft 3 7/8 in
Wheelbase42 ft 2 in
Fixed wheelbase22 ft 4 in
Total wheelbase82 ft 10 1/2 in
Service weight380,000 lbs
Adhesive weight293,000 lbs
Total weight586,100 lbs
Axle load58,600 lbs
Water capacity12,000 us gal
Fuel capacity32,000 lbs (coal)
Power sourcesteam
Estimated power3,800 hp (2,834 kW)
Optimal speed33 mph
Top speed35 mph
Starting effort73,829 lbf
Power Plant
Driver diameter63 in
Boiler pressure190 psi
Expansion typesimple
Cylinderstwo, 30 x 32 in
Grate area83.2 sq ft
Firebox area429 sq ft
Tube heating area4,727 sq ft
Evaporative heating area5,156 sq ft
Superheater area1,230 sq ft
Total heating area6,386 sq ft
Calculated Values
steam locomotive
last changed: 11/2023

We use cookies to save the following settings:

  • selected navigation structure
  • selected language
  • preferred units
  • spelling of railway company names

If you refuse the use of cookies, the settings will only be retained for the current session and will be reset to the default values the next time you visit the site.

Display of units

Here you can set the desired unit system for the technical data.

  • Metric: Lengths in meters, weights in tonnes, and volumes in cubic meters
  • Imperial (UK): Lengths in feet/inches, weights in long tons and volumes in imperial gallons
  • Imperial (US): Lengths in feet/inches, weights in pounds, and volumes in US gallons
  • Individual: Depends on the country of origin of each locomotive
Operator names

Here you can set the display of railway company names.

  • Short: Abbreviation or short form of the name
  • Standard: commonly used name, partially translated to English
  • Complete: full name in local language