| Baldwin DR-4-4-1500 | |
| Powertype: | Diesel-electric |
| Builder: | Baldwin Locomotive Works |
| Buildmodel: | DR-4-4-1500 |
| Builddate: | November 1947 – June 1950 |
| Totalproduction: | 105 |
| Aarwheels: | B-B |
| Trucks: | AAR Type B |
| Primemover: | 608SC |
| Enginetype: | Four-stroke diesel |
| Aspiration: | Turbocharged |
| Generator: | Westinghouse 471A |
| Tractionmotors: | Westinghouse 370F (4) |
| Cylindercount: | 8 |
| Gear Ratio: | 15:63 |
| Coupling: | AAR type E knuckle |
| Poweroutput: | 15002NaN2 |
| Operator: | Missouri Pacific, New York Central, Central Railroad of New Jersey, Pennsylvania Railroad, Elgin, Joliet and Eastern, Baltimore and Ohio |
| Operatorclass: | PRR- BF15/BF15a, NYC- DFA-4a, CNJ- FD-43 |
| Nicknames: | Babyface / Sharknose |
| Locale: | North America |
| Scrapdate: | 1962 (B&O, NYC, MP) 1963 (CNJ) 1966 (PRR) |
| Disposition: | All scrapped |
The Baldwin DR-4-4-15 was a 1500hp cab unit-type diesel locomotive built for freight service by the Baldwin Locomotive Works between November 1947 and June 1950. It was produced in two different body types, nicknamed the "Babyface" and "Sharknose" styles by railfans, though Baldwin used the same model number for both. 22 "Babyface" cab-equipped A units were built, along with 11 cabless booster B units; 36 "Sharknose" A units and 36 B units were constructed, making a total for all models of 105 locomotives built.
| Railroad | Quantity A units | Quantity B units | Road numbers A units | Road numbers B units | Notes | |
|---|---|---|---|---|---|---|
| 10 | 5 | 70–79 | K, L, M, R, S | |||
| Missouri Pacific Railroad | 8 | 4 | 201–208 | 201B–204B | ||
| New York Central Railroad | 4 | 2 | 3400–3403 | 3700–3701 | Renumbered 3800–3803 (A) | |
| Totals | 22 | 11 |
| Railroad | Quantity A units | Quantity B units | Road numbers A units | Road numbers B units | Notes | |
|---|---|---|---|---|---|---|
| Baldwin Locomotive Works (demonstrators) | 2 | 2 | 6001A, 6001A1 | 6001B, 6001B1 | to Elgin, Joliet and Eastern Railroad #700A/#701A (A) #700B/#701B (B), then to Baltimore and Ohio Railroad 847, 849 (A) 847X, 849X (B), later 4200–4201 (A), 5200–5201 (B) | |
| Pennsylvania Railroad | 34 | 34 | 9568A–9593A, 9700A–9707A | 9568B–9593B, 9700B–9707B | 9700A,B - 9707A,B were equipped with Baldwin RF-16 bodies and Westinghouse 370G generator, and are therefore referred to by some as "RF-15s." 9583B repowered with an Alco 251B V12 prime mover in December 1959, renumbered 9632B. converted to mobile power unit by Sullian Trail Colliery in 1991, scrapped in 1992. | |
| Totals | 36 | 36 |
