USRA Heavy Santa Fe
| USRA Heavy Santa Fe | |
| Power type | Steam |
|---|---|
| Configuration | 2-10-2 |
| Gauge | 4 ft 8½ in (1435 mm) |
| Leading wheel size | 33 in (838 mm) |
| Trailing wheel size | 43 in (1,092 mm) |
| Wheelbase | 42 ft 2 in (12.85 m) |
| Length | 55 ft 4 in (16.87 m) without tender |
| Width | 10 ft 8 in (3.25 m) |
| Height | 15 ft 9 in (4.80 m) |
| Weight on drivers | 293,000 lb (133,000 kg) |
| Total weight | 380,000 lb (172,000 kg) |
| Locomotive and tender combined weight | 586,000 lb (266,000 kg) |
| Fuel type | Soft coal |
| Boiler pressure | 190 lbf/in² (1.31 MPa) |
| Fire grate area | 82.2 ft² (7.64 m²) |
| Heating surface: Tubes | 3,258 ft² (302.68 m²) |
| Heating surface: Flues | 1,469 ft² (136.47 m²) |
| Heating surface: Firebox | 429 ft² (39.85 m²) |
| Heating surface: Total | 5,156 ft² (479.01 m²) |
| Superheater area | 1,230 ft² (114.27 m²) |
| Cylinders | 2 |
| Cylinder size | 30×32 in (762×813 mm) |
| Valve gear | Walschaert valve gear |
| Tractive effort | 74,000 lbf (329 kN) |
| Factor of adhesion | 3.96 |
The USRA Heavy Santa Fe was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. These locomotives were of 2-10-2 wheel arrangement in the Whyte notation, or "1'E1'" in UIC classification; this arrangement was commonly named "Santa Fe" in the United States. At the time, the Santa Fe was the largest non-articulated type in common use, primarily in slow drag freight duty in ore or coal service.
A total of 175 of these locomotives were constructed under the auspices of the USRA. They went to the following railroads:
- Bessemer and Lake Erie Railroad (5)
- Chicago, Burlington and Quincy Railroad (10)
- Erie Railroad (25)
- Fort Worth and Denver City Railroad (5)
- Pennsylvania Railroad (130) PRR Class N2s
The Pennsylvania Railroad locomotives were later refitted with the Pennsy's trademark Belpaire fireboxes.
