PRR locomotive classification
Encyclopedia
Locomotive classification on the Pennsylvania Railroad
took several forms. Early on, steam locomotive
s were given single-letter classes. As the 26 letters were quickly assigned, that scheme was abandoned for a more complex system. This was used for all of the PRR's steam locomotives, and — with the exception of the final type bought (the E44) — all electric locomotive
s also used this scheme.
type, an arrangement best suited to small switcher
s. Most railroads abandoned the 0-4-0 after the 1920s, but the PRR kept it alive for use on small industrial branches, especially those with street trackage and tight turns.
type, the most popular arrangement for switcher
s on the PRR.
type. These were very common on other railroads, but the PRR was not keen on them and only built a few. This was partly because the PRR used 2-8-0
"Consolidation" types for similar service.
"American" type, the most common arrangement in 19th Century American railroading. 4-4-0s stayed in service on the PRR in secondary work later than on most other railroads, and three were in use until after World War II
"Atlantic" type was assigned class E. The PRR was an enthusiastic user of the Atlantic type in flatter country, and built some of the most advanced Atlantics used in the United States.
"Mogul" type was assigned class F. On the PRR, this type was used during the period of 1895–1925, approximately. They were mostly used to haul express freight, although some hauled suburban passenger trains.
"Decapod" type was assigned class I. The PRR only owned one type of Decapod, class I1s, but they owned 598 of them, one of the largest classes of identical power in the United States.
"Prairie" locomotives built by ALCO in 1905. These were both withdrawn from service by the mid 1920s. In 1942, the PRR built 250 2-10-4
"Texas" type locomotives to C&O plans; class J now being unoccupied, it was reused for them.
"Pacific" type. The Pacific was the most common type of passenger locomotive on the Pennsylvania.
"Mikado" type.
arrangement was rare anywhere, and on the PRR it was found only on eight experimental electric locomotives.
arrangement was seen on the PRR only on electric locomotives. As a steam locomotive arrangement, it was poorly suited to the PRR's mountainous terrain, wasting much potential adhesive weight on non-driven wheels. That it was so widely used by the rival New York Central would also likely have factored against PRR adoption.
steam locomotive ever built.
"Northern" type, although the T1
duplexes were effectively a "Northern" with the driving wheels split into two groups.
s and joined locomotive units by using multiples of the previous classifications.
Articulated steam:
Articulated electric:
Pennsylvania Railroad
The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....
took several forms. Early on, steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
s were given single-letter classes. As the 26 letters were quickly assigned, that scheme was abandoned for a more complex system. This was used for all of the PRR's steam locomotives, and — with the exception of the final type bought (the E44) — all electric locomotive
Electric locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or an on-board energy storage device...
s also used this scheme.
A: 0-4-0
Class A was the 0-4-00-4-0
Under the Whyte notation for the classification of steam locomotives, 0-4-0 represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven...
type, an arrangement best suited to small switcher
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...
s. Most railroads abandoned the 0-4-0 after the 1920s, but the PRR kept it alive for use on small industrial branches, especially those with street trackage and tight turns.
- A1PRR A1The Pennsylvania Railroad's class A1 was a class of 0-4-0 type steam locomotives.- History :The Pennsylvania Railroad's class A1 was a class of 0-4-0 switcher type steam locomotive. When the A1 was introduced into service, 0-4-0s were being used by other railroads. In time the 0-6-0 came and other...
- A2
- A3
- A4
- A5sPRR A5sThe Pennsylvania Railroads class A5s was the largest class of 0-4-0 steam locomotives.-History:In the 1920s many railroads in the United States of America had retired 0-4-0 steam locomotives, because they were too small to move freight cars in yards and were too small for switching duties. This was...
B: 0-6-0
Class B comprised the 0-6-00-6-0
Under the Whyte notation for the classification of steam locomotives, 0-6-0 represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles, and no trailing wheels...
type, the most popular arrangement for switcher
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...
s on the PRR.
- B1PRR B1The Pennsylvania Railroad's class B1 comprised 42 switcher-type electric locomotives built between 1926 and 1935. They were of 0-6-0 wheel arrangement in the Whyte notation with 700 horsepower. As built, the first 28 locomotives formed permanently coupled pairs, known as BB1's...
- B2
- B3
- B4
- B5
- B6PRR B6The Pennsylvania Railroad's class B6 was its most successful class of switcher, or as the PRR termed them, "shifter". The PRR preferred the 0-6-0 wheel arrangement for larger switchers, whereas on other roads the 0-8-0 gained preference...
- B7
- B8
- B21
- B22
- B23
- B28s
- B29
C: 0-8-0
Class C was assigned to the 0-8-00-8-0
Under the Whyte notation for the classification of steam locomotives, 0-8-0 represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles, and no trailing wheels...
type. These were very common on other railroads, but the PRR was not keen on them and only built a few. This was partly because the PRR used 2-8-0
2-8-0
Under the Whyte notation for the classification of steam locomotives, 2-8-0 represents the wheel arrangement of two leading wheels on one axle , eight powered and coupled driving wheels on four axles, and no trailing wheels...
"Consolidation" types for similar service.
- C1PRR C1The PRR C1 was the Pennsylvania Railroad's class of 0-8-0 steam locomotives. They were commonly used in switching services on the system. While most railroads liked the 0-8-0 wheel arrangement, this particular wheel arrangement was not keen on the PRR. When the railroad needed bigger motive power,...
- C29
- C30
- C31
D: 4-4-0
Class D was the 4-4-04-4-0
Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...
"American" type, the most common arrangement in 19th Century American railroading. 4-4-0s stayed in service on the PRR in secondary work later than on most other railroads, and three were in use until after World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
- D1PRR D1The Pennsylvania Railroad's steam locomotive class D1 comprised thirteen 4-4-0 locomotives for express passenger service, constructed at the railroad's own Altoona Works during 1868–1872...
- D2PRR D2The Pennsylvania Railroad's steam locomotive class D2 comprised twenty 4-4-0 locomotives intended for mountain passenger helper service, constructed at the railroad's own Altoona Works during 1869–1880...
- D3PRR D3The Pennsylvania Railroad's steam locomotive class D3 comprised sixty-seven 4-4-0 locomotives intended for general passenger and freight service, constructed at the railroad's own Altoona Works during 1869–1881....
- D4PRR D4The Pennsylvania Railroad's steam locomotive class D4 comprised thirty-seven anthracite-burning 4-4-0 locomotives intended for general passenger and freight service on the PRR's New Jersey lines, constructed at the railroad's own Altoona Works during 1873–1890.They shared many parts with other...
- D5PRR D5The Pennsylvania Railroad's steam locomotive class D5 comprised eighteen lightweight 4-4-0 locomotives for light duty, maintenance-of-way and branch-line service, constructed at the railroad's own Altoona Works during 1870–1873.They shared many parts with other standard classes, although less so...
- D6PRR D6Class D6 on the Pennsylvania Railroad was a class of 4-4-0 steam locomotive.Nineteen were built by the PRR's Altoona Works between 1881–1883...
- D7PRR D7Class D7 on the Pennsylvania Railroad was a class of 4-4-0 steam locomotive.Fifty-eight were built by the PRR's Altoona Works between 1882–1891 with drivers, while sixty-one of class D7a were constructed with drivers.The D7 was fundamentally an anthracite-burning version of the PRR D6, with a...
- D8
- D9
- D10
- D11
- D12
- D13
- D14PRR D14Class D14 on the Pennsylvania Railroad was a type of steam locomotive with a 4-4-0 wheel arrangement in the Whyte notation.They were originally designated class P in the PRR's pre-1895 classification scheme...
- D15PRR D15The class D15 of the Pennsylvania Railroad comprised a solitary Lindner-system cross compound steam locomotive of 4-4-0 "American" wheel arrangement in the Whyte notation. The sole locomotive was #1515, built in 1892; it had rather British lines with a full-length footplate and splashers, and...
- D16PRR D16Class D16 on the Pennsylvania Railroad was their final development of the 4-4-0 "American" type of steam locomotive.A total of 429 of these locomotives were built, spread across five subclasses; some had diameter driving wheels for service in level territory, while others had drivers for...
- D21 - ex-Vandalia RailroadVandalia Railroad (1905-1917)The Vandalia Railroad was a railroad from Logansport, Indiana, to South Bend, Indiana. It quickly became a property of the Pennsylvania Railroad , which later became part of Penn Central and then Conrail. The railroad was mostly a freight-carrying route with a hub at Logansport Yard...
, built by Baldwin 1871-1873 - D22 - ex-Vandalia Railroad, built by Pittsburgh 1883-1889
- D23 - ex-Vandalia Railroad, built by Pittsburgh 1884
- D24 - ex-Vandalia Railroad, built by Rogers 1887
- D25 - ex-Vandalia Railroad, built by Pittsburgh 1890
- D26 - ex-Vandalia Railroad, built by Schenectady 1895-1899
- D30 - ex-Toledo, Walhonding Valley and Ohio Railroad, built by Rome 1890
- D31 - ex-Toledo, Walhonding Valley and Ohio Railroad, built 1892-1895
- D32 - ex-Toledo, Walhonding Valley and Ohio Railroad, built by Baldwin 1892
- D33
- D34 - ex-Cleveland and Marietta Railroad, built by Rome 1885
- D35 - ex-Cleveland and Marietta Railroad, built by Rome 1885
- D36 - ex-Cleveland and Marietta Railroad, built by Rogers 1885-1886
- D37 - ex-Cincinnati, Lebanon and Northern Railway, built by Baldwin 1894
- D38 - ex-Cincinnati, Lebanon and Northern Railway, built by Pittsburgh 1899
- D39 - ex-Grand Rapids and Indiana RailroadGrand Rapids and Indiana RailroadThe Grand Rapids and Indiana Railroad at its height provided passenger and freight railroad services between Cincinnati, Ohio and the Straits of Mackinac in Michigan, USA...
, built by Baldwin 1892-1893 - D61 - ex-Cleveland, Akron and Columbus Railway, built by Baldwin 1893
- "Odd D" #10003PRR Odd D 10003Pennsylvania Railroad's Odd D #10003 was an experimental electric locomotive built in 1907 of 4-4-0 wheel arrangement in the Whyte notation, or 2-B in the AAR scheme. On the PRR, class D was assigned to 4-4-0 locomotives...
, an experimental electric locomotiveElectric locomotiveAn electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or an on-board energy storage device...
.
E: 4-4-2
The 4-4-24-4-2 (locomotive)
Under the Whyte notation for the classification of steam locomotives, 4-4-2 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and two trailing wheels on one axle...
"Atlantic" type was assigned class E. The PRR was an enthusiastic user of the Atlantic type in flatter country, and built some of the most advanced Atlantics used in the United States.
- E1PRR E1Three experimental Atlantic 4-4-2 locomotives built in 1899 to compete with the Reading Railroad on the Philadelphia, Pennsylvania to Atlantic City, New Jersey high-speed seashore passenger train service. These engines were designed with cab-center or camelback locomotives, wide fireboxes, and 80"...
- E2PRR E2The Pennsylvania Railroad's class E2, E3, E7 steam locomotives were of the 4-4-2 "Atlantic" passenger type, frequently called “light Atlantics” after the introduction of the heavier, more powerful E6 Atlantics. All locomotives were similar in terms of wheel configuration and size, boiler capacity...
- E3
- E4
- E5
- E6PRR E6Class E6 on the Pennsylvania Railroad was the final type of 4-4-2 "Atlantic" locomotive built by the railroad, and second only to the Milwaukee Road's streamlined class A in size, speed and power. Although quickly ceding the crack trains to the larger K4s Pacifics, the E6 remained a popular...
- E7
- E21
- E22
- E23
- E28
F: 2-6-0
The 2-6-02-6-0
Under the Whyte notation for the classification of steam locomotives, 2-6-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This arrangement is commonly called a Mogul...
"Mogul" type was assigned class F. On the PRR, this type was used during the period of 1895–1925, approximately. They were mostly used to haul express freight, although some hauled suburban passenger trains.
- F1
- F2
- F3
- F21
- F22
- F23
- F24
- F25
- F26
- F27
- F30
- F31
- F61
G: 4-6-0
- G1
- G2
- G3
- G4
- G5PRR G5The Pennsylvania Railroad G5s was a class of 4-6-0 steam locomotives built by the PRR's Juniata Shops in the mid-late 1920s. The class was designed primarily for providing power to passenger trains, particularly on commuter lines, and thus became a fixture on suburban railroads, most notably the...
- Largest 10 wheeler built. PRR constructed 90 for use in commuter service and then built 30 for their subsidiary the Long Island RR. - G53 - Owned By subsidiary Long Island RR
H: 2-8-0
- H1
- H2
- H3
- H4
- H5
- H6
- H8PRR H8The Pennsylvania Railroad's class H8, H9s and H10s steam locomotives were of the 2-8-0 "Consolidation" type, the last three classes of such built by the railroad. The three classes differed only in cylinder diameter and thus tractive effort, each subsequent class increasing that measurement by an...
- H9
- H10
I: 2-10-0
The 2-10-02-10-0
Under the Whyte notation for the classification of steam locomotives, 2-10-0 represents the wheel arrangement of two leading wheels on one axle, ten powered and coupled driving wheels on five axles, and no trailing wheels...
"Decapod" type was assigned class I. The PRR only owned one type of Decapod, class I1s, but they owned 598 of them, one of the largest classes of identical power in the United States.
- I1sPRR I1sThe Pennsylvania Railroad's class I1s steam locomotives were the largest class of 2-10-0 "Decapods" built in the United States, with 598 built 1916–1923 . These locomotives were the premier freight locomotive type on the system until World War II, and they remained in service until the end of...
- heavy freight hauler.
J: 2-6-2 and 2-10-4
Class J was first used for two experimental 2-6-22-6-2
Under the Whyte notation for the classification of steam locomotives, 2-6-2 represents the wheel arrangement of two leading wheels, six coupled driving wheels and two trailing wheels.Other equivalent classifications are:...
"Prairie" locomotives built by ALCO in 1905. These were both withdrawn from service by the mid 1920s. In 1942, the PRR built 250 2-10-4
2-10-4
Under the Whyte notation for the classification of steam locomotives, a 2-10-4 locomotive has two leading wheels, ten driving wheels , and four trailing wheels...
"Texas" type locomotives to C&O plans; class J now being unoccupied, it was reused for them.
- J1PRR J1The PRR J1 was a class of 2-10-4 or "Texas" type steam locomotives with driving wheels built between 1943 and 1944. The J1 had over of tractive effort, plus an additional if the booster engine was used.- Features :...
- 2-10-4 freight locomotives. - J28PRR J28The Pennsylvania Railroad's class J28 comprised 2 experimental 2-6-2 "Prairie" type steam locomotives.-History:In 1905, the Pennsylvania Railroad needed a better steam locomotive, than the class E 4-4-2 "Atlantic" type. So, the railroad ordered two 2-6-2s from Alco-Schenectady. They were tested...
- experimental 2-6-2 locomotives.
K: 4-6-2
The PRR assigned class K to the 4-6-24-6-2
4-6-2, in the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles , six powered and coupled driving wheels on three axles, and two trailing wheels on one axle .These locomotives are also known as Pacifics...
"Pacific" type. The Pacific was the most common type of passenger locomotive on the Pennsylvania.
- K2 - 153 built at Altoona 1910-1911
- K3s - 30 built by BaldwinBaldwin Locomotive WorksThe Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...
in 1913. - K4sPRR K4sThe Pennsylvania Railroad's K4s 4-6-2 "Pacific" was their premier passenger-hauling steam locomotive from 1914 through the end of steam on the PRR in 1957....
- 425 built by the PRR and Baldwin 1914-1928. - K5PRR K5The Pennsylvania Railroad's class K5 was an experimental 4-6-2 "Pacific" type, built in 1929 to see if a larger Pacific than the standard K4s was worthwhile. Two prototypes were built, #5698 at the PRR's own Altoona Works, and #5699 by the Baldwin Locomotive Works. Although classified identically,...
- 2 prototypes built
L: 2-8-2
Class L was assigned to the 2-8-22-8-2
Under the Whyte notation for the classification of steam locomotives, 2-8-2 represents the wheel arrangement of two leading wheels on one axle , eight powered and coupled driving wheels on four axles, and two trailing wheels on one axle...
"Mikado" type.
- L1sPRR L1sClass L1s on the Pennsylvania Railroad comprised 574 2-8-2 "Mikado" type steam locomotives constructed between 1914 and 1919 by the railroad's own Juniata Shops as well as the Baldwin Locomotive Works and the Lima Locomotive Works ....
- freight twin to the famed K4sPRR K4sThe Pennsylvania Railroad's K4s 4-6-2 "Pacific" was their premier passenger-hauling steam locomotive from 1914 through the end of steam on the PRR in 1957....
Pacific (575 built) - L2sPRR L2sThe Pennsylvania Railroads class L2s were a class of USRA Light Mikados rebuilt to Pennsylvania Railroad specifications.-History:After World War II, the Pennsylvania Railroad need a lighter 2-8-2 type steam locomotive to handle lighter freight trains on the system, especially after World War II...
- the USRAUnited States Railroad AdministrationThe United States Railroad Administration was the name of the nationalized railroad system of the United States between 1917 and 1920. It was possibly the largest American experiment with nationalization, and was undertaken against a background of war emergency.- Background :On April 6, 1917, the...
standard light Mikado (5 built for PRR). - L5PRR L5The Pennsylvania Railroad's class L5 were the railroad's second generation of production electric locomotives after the DD1, and the last to use a jackshaft and side rods to drive the wheels. The L5 was a single-unit locomotive instead of the twin-unit DD1. Thirteen were built...
- PRR 2nd generation DC electric locomotive. - L6PRR L6The Pennsylvania Railroad's class L6 comprised three electric locomotives of 2-8-2 wheel arrangement in the Whyte notation. The intention was to build a whole class of freight boxcab locomotives using this design, but the displacement of class P5a to freight work after the introduction of the GG1...
- PRR freight AC electric locomotives.
M: 4-8-2
- M1PRR M1M1 is a class of steam locomotive of the Pennsylvania Railroad . It was a class of heavy mixed-traffic locomotives of the 4-8-2 "Mountain" arrangement, which uses four pairs of driving wheels with a four-wheel guiding truck in front for stability at speed and a two-wheel trailing truck to support...
- mixed-traffic Mountain type, latterly mostly used on fast freight.
N: 2-10-2
- N1sPRR N1sThe Pennsylvania Railroad's N1s was a class of steam locomotive built for Lines West. They were of 2-10-2 "Santa Fe" wheel arrangement, ten driving wheels with a two-wheel leading truck and a two-wheel cast KW-pattern trailing truck under a giant firebox...
- Lines West heavy freight locomotive. - N2s - USRAUnited States Railroad AdministrationThe United States Railroad Administration was the name of the nationalized railroad system of the United States between 1917 and 1920. It was possibly the largest American experiment with nationalization, and was undertaken against a background of war emergency.- Background :On April 6, 1917, the...
Standard 2-10-2, also used on Lines West.
O: 4-4-4
The 4-4-44-4-4
Under the Whyte notation for the classification of steam locomotives, 4-4-4 represents the wheel arrangement of four leading wheels on two axles, four powered and coupled driving wheels on two axles, and four trailing wheels on two axles. In the United States, this arrangement was named the...
arrangement was rare anywhere, and on the PRR it was found only on eight experimental electric locomotives.
- O1PRR O1The Pennsylvania Railroad's class O1 comprised eight experimental boxcab electric locomotivesbuilt in 1930 and 1931.They had the wheel arrangement classified as 4-4-4 in the Whyte notation . Although successful, they were not powerful enough for the railroad's increasingly heavy trains...
- experimental electric locomotives.
P: 4-6-4
The 4-6-44-6-4
Under the Whyte notation for the classification of steam locomotives, 4-6-4 represents the wheel arrangement of four leading wheels on two axles , six powered and coupled driving wheels on three axles, and four trailing wheels on two axles .Other equivalent classifications are:UIC classification:...
arrangement was seen on the PRR only on electric locomotives. As a steam locomotive arrangement, it was poorly suited to the PRR's mountainous terrain, wasting much potential adhesive weight on non-driven wheels. That it was so widely used by the rival New York Central would also likely have factored against PRR adoption.
- P5PRR P5The Pennsylvania Railroad's class P5 comprised 92 mixed-traffic electric locomotives constructed 1931–1935 by the PRR, Westinghouse and General Electric....
- mixed-traffic electric locomotive.
Q: 4-4-6-4 or 4-6-4-4
The Q class comprised what were effectively 4-10-4s with the driving axles split into two driven groups. The Q2 was the most powerful non-articulatedArticulated locomotive
Articulated locomotive usually means a steam locomotive with one or more engine units which can move independent of the main frame. This is done to allow a longer locomotive to negotiate tighter curves...
steam locomotive ever built.
- Q1PRR Q1The Pennsylvania Railroad's class Q1 comprised a single experimental steam locomotive for freight service, #6130, built in March 1942. A duplex locomotive, it had a wheel arrangement of 4-6-4-4, comprising a four-wheel leading truck, two sets of driving wheels in a rigid locomotive frame, and a...
- experimental duplexDuplex locomotiveA duplex locomotive is a steam locomotive that divides the driving force on its wheels by using two pairs of cylinders rigidly mounted to a single locomotive frame; it is not an articulated locomotive...
freight locomotive. - Q2PRR Q2The Pennsylvania Railroad's class Q2 comprised one prototype and twenty-five production duplex steam locomotives of 4-4-6-4 wheel arrangement....
- duplex freight locomotive.
R: 4-8-4
The PRR never built any steam locomotives of the 4-8-44-8-4
Under the Whyte notation classification of steam locomotives, 4-8-4 represents the wheel arrangement of four leading wheels on two axles , eight powered and coupled driving wheels on four axles, and four trailing wheels on two axles .Other equivalent classifications are:UIC classification: 2D2...
"Northern" type, although the T1
PRR T1
The Pennsylvania Railroad's 52 T1 class duplex-drive 4-4-4-4 steam locomotives, introduced in 1942 and 1946 , were their last-built steam locomotives and their most controversial. They were ambitious, technologically sophisticated, powerful, fast, and uniquely streamlined by Raymond Loewy...
duplexes were effectively a "Northern" with the driving wheels split into two groups.
- R1PRR R1The Pennsylvania Railroad's class R1 comprised a single prototype electric locomotive constructed in 1934 by the Baldwin Locomotive Works of Philadelphia, Pennsylvania, USA, with the electrical equipment by Westinghouse....
- experimental electric locomotive, surpassed by the GG1PRR GG1The PRR GG1 is a class of electric locomotives that was built for the Pennsylvania Railroad for use in the northeastern United States. A total of 140 GG1s were constructed by its designer General Electric and the Pennsylvania's Altoona Works from 1934 to 1943....
.
S: 6-4-4-6 or 6-8-6
Both S class locomotives were originally intended to only have four leading and trailing wheels, but increases in weight required them. In the case of the S2, it was due to wartime limits on the use of advanced steel alloys.- S1PRR S1The PRR S1 class steam locomotive was an experimental locomotive that was the largest rigid frame passenger locomotive ever built. The streamlined Art Deco styled shell of the locomotive was designed by Raymond Loewy....
- experimental duplex express passenger locomotive. - S2PRR S2The Pennsylvania Railroad's class S2 was a steam turbine locomotive. Only one prototype was built, #6200, delivered in 1944. The S2 was the sole example of the 6-8-6 wheel arrangement in the Whyte notation, featuring a six-wheel leading truck, eight driving wheels, and a six-wheel trailing truck...
- experimental steam turbine locomotiveSteam turbine locomotiveA steam turbine locomotive is a steam locomotive which transmits steam power to the wheels via a steam turbine. Numerous attempts at this type of locomotive were made, mostly without success...
.
T: 4-4-4-4
The duplex-drive T1 was the final class of steam locomotive constructed for the Pennsylvania Railroad, and possibly the most controversial.- T1PRR T1The Pennsylvania Railroad's 52 T1 class duplex-drive 4-4-4-4 steam locomotives, introduced in 1942 and 1946 , were their last-built steam locomotives and their most controversial. They were ambitious, technologically sophisticated, powerful, fast, and uniquely streamlined by Raymond Loewy...
- Duplex express passenger locomotive.
Compound classifications
The PRR classified articulated locomotiveArticulated locomotive
Articulated locomotive usually means a steam locomotive with one or more engine units which can move independent of the main frame. This is done to allow a longer locomotive to negotiate tighter curves...
s and joined locomotive units by using multiples of the previous classifications.
Articulated steam:
- CC1sPRR CC1sThe Pennsylvania Railroad's class CC1s consisted as a single experimental 0-8-8-0 steam locomotive built by Baldwin in 1912. It was assigned road number #3397. A subsequent class, the CC2s', followed after the tests with this locomotive. Later this locomotive was scrapped....
- 0-8-8-00-8-8-0In the Whyte notation for classifying the wheel arrangement of steam locomotives, an 0-8-8-0 is a locomotive with two sets of eight driving wheels and neither leading wheels nor trailing wheels...
Mallet locomotive. Treated as two 0-8-00-8-0Under the Whyte notation for the classification of steam locomotives, 0-8-0 represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles, and no trailing wheels...
s for classification. One built. - CC2s - 0-8-8-0 Mallet locomotive. 10 built.
- HC1s - 2-8-8-02-8-8-0In the Whyte notation for the classification of steam locomotives by wheel arrangement, a 2-8-8-0 is a locomotive with a two-wheel leading truck, two sets of eight driving wheels, and no trailing truck.-Equivalent classifications:...
simple articulated locomotive. The PRR's only main-line articulated. One built. - HH1sPRR HH1sThe Pennsylvania Railroad's class HH1s comprised a single 2-8-8-2 type steam locomotive. Unlike most Pennsylvania Railroad steam locomotives, it had a wagon-top boiler. It was built by the American Locomotive Company in 1911. For 17 years, the single HH1s served as a helper until 1928. It had the...
- 2-8-8-22-8-8-2.A 2-8-8-2, in the Whyte notation for describing steam locomotive wheel arrangements, is an articulated locomotive with a two-wheel leading truck, two sets of eight driving wheels, and a two-wheel trailing truck. The equivalent UIC classification is, refined to Mallet locomotives, D1...
Mallet locomotiveMallet locomotiveThe Mallet Locomotive is a type of articulated locomotive, invented by a Swiss engineer named Anatole Mallet ....
. Treated for classification purposes as two 2-8-02-8-0Under the Whyte notation for the classification of steam locomotives, 2-8-0 represents the wheel arrangement of two leading wheels on one axle , eight powered and coupled driving wheels on four axles, and no trailing wheels...
s back to back. - HH1 - 2-8-8-2 Norfolk & Western class Y3 borrowed by PRR during World War IIWorld War IIWorld War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
.
Articulated electric:
- AA1PRR AA1The Pennsylvania Railroad's class AA1 comprised two experimental electric locomotives constructed in 1905 by Westinghouse at the start of the PRR's electrification project.They were testbeds for larger locomotives to come...
- experimental 0-4-4-0 or B-B electric locomotives. - BB1 - two-unit prototype AC electric 0-6-0+0-6-0 switching locomotive, later split into single units as class B1PRR B1The Pennsylvania Railroad's class B1 comprised 42 switcher-type electric locomotives built between 1926 and 1935. They were of 0-6-0 wheel arrangement in the Whyte notation with 700 horsepower. As built, the first 28 locomotives formed permanently coupled pairs, known as BB1's...
. - BB2 - two-unit 0-6-0+0-6-0 DC electric switching locomotives, later split into single units as class B1PRR B1The Pennsylvania Railroad's class B1 comprised 42 switcher-type electric locomotives built between 1926 and 1935. They were of 0-6-0 wheel arrangement in the Whyte notation with 700 horsepower. As built, the first 28 locomotives formed permanently coupled pairs, known as BB1's...
. - BB3 - two-unit 0-6-0+0-6-0 DC electric switching locomotives for LIRRLong Island Rail RoadThe Long Island Rail Road or LIRR is a commuter rail system serving the length of Long Island, New York. It is the busiest commuter railroad in North America, serving about 81.5 million passengers each year. Established in 1834 and having operated continuously since then, it is the oldest US...
, later split into single units as class B3. - DD1PRR DD1The Pennsylvania Railroad's class DD1 were semi-permanently coupled pairs of third rail direct current electric locomotives built for the railroad's initial New York-area electrification. They operated between Manhattan Transfer and Pennsylvania Station in New York City, and from there to the...
- two-unit DC electric locomotive, two 4-4-04-4-0Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...
half-locomotives semi-permanently coupled back to back. Served between Manhattan TransferManhattan Transfer (PRR station)Manhattan Transfer was a passenger station in Harrison, New Jersey, east of Newark, 8.8 miles west of New York Penn Station on the Pennsylvania Railroad main line, now Amtrak's Northeast Corridor...
and Penn Station, and to Sunnyside YardSunnyside YardSunnyside Yard is a large coach yard, a railroad yard for passenger cars, in Sunnyside, Queens in New York City.-Description:The yard is owned by Amtrak and is also used by New Jersey Transit. The shared tracks of the Long Island Rail Road Main Line and Amtrak's Northeast Corridor pass along the...
. - DD2PRR DD2The Pennsylvania Railroad's class DD2 electric locomotive was a single prototype locomotive never placed into series production.It was intended as an improved and simplified GG1 for use on the planned, but never built, extension of the PRR's electrification west of Harrisburg, Pennsylvania.The one...
- experimental mixed-traffic AC electric locomotive. - FF1PRR FF1The Pennsylvania Railroad's class FF1 was an American electric locomotive, a single prototype numbered #3931 and nicknamed "Big Liz" by its crews. It was built in 1917 for the task of hauling freight trains across the Allegheny Mountains, which the PRR planned to electrify; this was never...
- 2-6-6-22-6-6-2In Whyte notation, 2-6-6-2 refers to a railroad steam locomotive that has two leading wheels followed by six coupled driving wheels, a second set of six coupled driving wheels, and two trailing wheels...
(1-C+C-1) experimental electric locomotive, 1917. Too powerful. - FF2PRR FF2The Pennsylvania Railroad's class FF2 was a group of American electric locomotives which comprised eight boxcab units, purchased from the Great Northern Railway in 1956 following the GN's dismantling of its Cascade Tunnel electrification. They had been built by the American Locomotive Company and...
- 2-6-6-2 motor-generator AC electric locomotives acquired second-hand from the Great Northern Railway (their classes Y1 and Y1a) in 1956. - GG1PRR GG1The PRR GG1 is a class of electric locomotives that was built for the Pennsylvania Railroad for use in the northeastern United States. A total of 140 GG1s were constructed by its designer General Electric and the Pennsylvania's Altoona Works from 1934 to 1943....
- express passenger and freight electric locomotive, highly successful.
Non-standard electric classification
- E2bPRR E2bPennsylvania Railroad class E2b comprised six experimental B-B electric locomotives built for the railroad by General Electric.In 1952 the Pennsylvania Railroad took delivery of eight experimental locomotives, four from Westinghouse and four from General Electric. GE also built two demonstrators to...
- experimental B-B General ElectricGeneral ElectricGeneral Electric Company , or GE, is an American multinational conglomerate corporation incorporated in Schenectady, New York and headquartered in Fairfield, Connecticut, United States...
-built AC electric locomotives (3 pairs built). - E3bPRR E3bPennsylvania Railroad class E3b comprised a pair of experimental B-B-B or Bo-Bo-Bo electric locomotives. The bodywork and running gear was produced by Baldwin-Lima-Hamilton while the electrical equipment was provided by Westinghouse, who also acted as the main contractor.In 1952 and 1953 the...
- experimental B-B-B Baldwin-Lima-Hamilton-Westinghouse AC/DC rectifier locomotives (1 pair built). - E2c - experimental C-C Baldwin-Lima-Hamilton-Westinghouse AC/DC rectifier locomotives (1 pair built)
- E44PRR E44The E44 was an electric, rectifier-equipped locomotive built by GE for the Pennsylvania Railroad between 1960 and 1963. They survived through the PRR and its successors until Conrail abandoned its electric operations in the early 1980s. They were acquired by Amtrak and NJ Transit, where they...
- 1960 C-C General ElectricGeneral ElectricGeneral Electric Company , or GE, is an American multinational conglomerate corporation incorporated in Schenectady, New York and headquartered in Fairfield, Connecticut, United States...
AC/DC rectifier freight locomotives.
Diesel classification
The Pennsylvania Railroad was slow to dieselize. By the end of WW2 they only had 18 units. However over the next 22 years they had acquired a total of 3005 units. They bought from all the manufacturers: Alco 516 units, Baldwin 643 units, EMD 1,479 units, Fairbanks-Morse 200 units, General Electric 145 units, and Lima 22 units. This diversity was a nightmare for the maintenance department as there was very little compatibility amongst the different builders.-
- The class number system is as follows:
- The first letter stood for the manufacturer; A=Alco, B =Baldwin, G =General Electric, E =EMD, F =Fairbanks-Morse, and L =Lima.
- The second and third letters represented the type of service; S =switcher, F =Freight, P =passenger, :: PF=dual service, RS =road-switcher, and H =helper.
- The next number(s) were for horse power rounded to hundreds.
- The last letter, if used, was for model variations.
Alco
| PRR Class | Builder’s Model | Build date | Total produced | Wheel arrangement AAR wheel arrangement The AAR wheel arrangement system is a method of classifying locomotive wheel arrangements that was developed by the Association of American Railroads. It is essentially a simplification of the European UIC classification, and it is widely used in North America to describe diesel and electric... | Service | Power output Horsepower Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the... | S-1 ALCO S-1 and S-3 The ALCO S-1 and S-3 were switcher diesel-electric locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works . Basically, the two locomotives differed only in trucks, with the S-1 using ALCO's own Blunt trucks, and the S-3 riding on standard AAR type A switcher trucks... | 1947–1951 | 40 | B-B | Switcher | 600 hp |
|---|---|---|---|---|---|---|---|
| AS10 | S-2 ALCO S-2 and S-4 The ALCO S2 and S4 were switcher diesel locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works . Basically, the two locomotives differed only in trucks, with the S-2 using ALCO's own Blunt trucks, and the S-4 riding on standard AAR type A switcher trucks. Both were powered... |
1948–1954 | 90 | B-B | Switcher | 1000 hp | 22 units MU class AS10m |
| AS10a | T-6 ALCO T-6 The Alco T6 was a diesel-electric locomotive of the switcher type rated at , that rode on two-axle trucks, having a B-B wheel arrangement.... |
1958 | 6 | B-B | Switcher | 1000 hp | |
| AF15 | FA-1 ALCO FA The ALCO FA was a family of B-B diesel locomotives designed to haul freight trains. The locomotives were built by a partnership of ALCO and GE in Schenectady, New York, between January 1946 and May 1959. They were of a cab unit design, and both cab-equipped lead FA and cabless booster FB models... |
1948–1950 | 8 | B-B | Freight | 1500 hp | |
| AF15 | FB-1 ALCO FA The ALCO FA was a family of B-B diesel locomotives designed to haul freight trains. The locomotives were built by a partnership of ALCO and GE in Schenectady, New York, between January 1946 and May 1959. They were of a cab unit design, and both cab-equipped lead FA and cabless booster FB models... |
1948–1950 | 8 | B-B | Freight | 1500 hp | |
| AF16 | FA-2 ALCO FA The ALCO FA was a family of B-B diesel locomotives designed to haul freight trains. The locomotives were built by a partnership of ALCO and GE in Schenectady, New York, between January 1946 and May 1959. They were of a cab unit design, and both cab-equipped lead FA and cabless booster FB models... |
1951 | 24 | B-B | Freight | 1600 hp | |
| AF16 | FA-2 ALCO FA The ALCO FA was a family of B-B diesel locomotives designed to haul freight trains. The locomotives were built by a partnership of ALCO and GE in Schenectady, New York, between January 1946 and May 1959. They were of a cab unit design, and both cab-equipped lead FA and cabless booster FB models... |
1951 | 12 | B-B | Freight | 1600 hp | |
| AFP20 | PA-1 ALCO PA ALCO PA refers to a family of A1A-A1A diesel locomotives built to haul passenger trains that were built in Schenectady, New York in the United States by a partnership of the American Locomotive Company and General Electric between June, 1946 and December, 1953... |
1947 | 10 | A1A-A1A | Pass | 2000 hp | many converted to Freight |
| AFP20 | PB-2 ALCO PA ALCO PA refers to a family of A1A-A1A diesel locomotives built to haul passenger trains that were built in Schenectady, New York in the United States by a partnership of the American Locomotive Company and General Electric between June, 1946 and December, 1953... |
1947 | 5 | A1A-A1A | Pass | 2000 hp | many converted to Freight |
| ARS10 | RS-1 ALCO RS-1 The ALCO RS-1 was a 4-axle diesel-electric locomotive built by Alco-GE between 1941 and 1953 and the American Locomotive Company from 1953 to 1960. This model has the distinction of having the longest production run of any diesel locomotive for the North American market.The carbody configuration of... |
1948–1952 | 27 | B-B | Freight | 1000 hp | 5 units used in Pass service |
| ARS15 | RS-2 ALCO RS-2 The ALCO RS-2 is a , B-B road switcher railroad locomotive. It was manufactured by American Locomotive Company from October 1946 to May 1950, and 378 were produced — 369 by the American Locomotive Company, and 9 by Montreal Locomotive Works in Canada. Eight of the ALCO RS-2s were exported to... |
1948 | 6 | B-B | Freight | 1500 hp | ex D&H |
| ARS16 | RS-3 ALCO RS-3 The ALCO RS-3 is a 1,600 hp , B-B road switcher railroad locomotive. It was manufactured by American Locomotive Company and Montreal Locomotive Works from May 1950 to August 1956, and 1,418 were produced — 1,265 for American railroads, 98 for Canadian railroads, 48 for Brazilian and 7... |
1951–1955 | 115 | B-B | Freight | 1600 hp | 45 units used in Pass service |
| ARS16a | RSD-4 | 1952–1953 | 6 | C-C | Freight | 1600 hp | |
| ARS18 | RS-11 ALCO RS-11 The ALCO RS-11 is a diesel-electric locomotive of the road switcher type rated at 1,800 hp , that rode on two-axle trucks, having a B-B wheel arrangement.-Development:... |
1956–1957 | 32 | B-B | Freight | 1800 hp | |
| ARS18a | RS-12 | 1957–1958 | 25 | C-C | Freight | 1800 hp | |
| ARS20 | RS-11 | 1956–1957 | 6 | B-B | Freight | 2000 hp | |
| ARS24 | RSD-15 | 1956 | 6 | C-C | Freight | 2400 hp | |
| ARS24s | RSD-7 | 1955–1956 | 5 | C-C | Pass | 2400 hp | |
| ARS24 | RS-27 ALCO RS-27 The ALCO RS-27 is a diesel-electric locomotive built by ALCO between December 1959 and October 1962. Only 27 examples were manufactured. With ALCO's introduction of the Century Series line, the C-424 replaced the RS-27 in the builder's catalog... |
1962 | 15 | C-C | Freight | 2400 hp | |
| AF24 | C-424 ALCO Century 424 The Century 424 was a four-axle, 2400 horsepower diesel locomotive of the road switcher type. 190 were built between April 1963 and May 1967. Cataloged as a part of Alco's Century line of locomotives, the C424 was intended to replace the earlier RS-27 model and offered as a lower-priced... |
1962 | 1 | C-C | Freight | 2400 hp | |
| AF25 | C-425 ALCO Century 425 The ALCO Century 425 was a four-axle, 2500 horsepower diesel locomotive of the road switcher type. 91 were built between October 1964 and December 1966.... |
1964–1965 | 31 | C-C | Freight | 2500 hp | |
| AF27 | C-628 ALCO Century 628 The ALCO Century 628 was a six-axle, 2,750 horsepower diesel locomotive. 186 were built between December 1963 and December 1968. Cataloged as part of ALCO's 'Century' line of locomotives, the C628 was intended to replace the earlier RSD-15 model.... |
1965 | 15 | C-C | Freight | 2750 hp | |
| AF30 | C-630 ALCO Century 628 The ALCO Century 628 was a six-axle, 2,750 horsepower diesel locomotive. 186 were built between December 1963 and December 1968. Cataloged as part of ALCO's 'Century' line of locomotives, the C628 was intended to replace the earlier RSD-15 model.... |
1966 | 15 | C-C | Freight | 3000 hp |
Baldwin Locomotive Works
| PRR Class | Builder’s Model | Build date | Total produced | Wheel arrangement AAR wheel arrangement The AAR wheel arrangement system is a method of classifying locomotive wheel arrangements that was developed by the Association of American Railroads. It is essentially a simplification of the European UIC classification, and it is widely used in North America to describe diesel and electric... | Service | Power output Horsepower Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the... | VO-660 Baldwin VO-660 The Baldwin VO-660 was a diesel-electric locomotive switcher built by Baldwin Locomotive Works between April, 1939 and May, 1946. The 197,520–203,980 lb units were powered by a six-cylinder diesel engine rated at 660 horsepower , and rode on two-axle AAR Type-A switcher trucks in a B-B wheel... | 1942–1945 | 12 | B-B | Switcher | 600 hp |
|---|---|---|---|---|---|---|---|
| BS6 | DS-4-4-660 | 1942–1945 | 99 | B-B | Switcher | 660 hp | |
| BS7 | DS-4-4-750 | 1951 | 24 | B-B | Switcher | 750 hp | |
| BS7 | S7 Baldwin S-8 The Baldwin S-8 was an 800-horsepower diesel-electric locomotive intended for use in yard switching. The Baldwin Locomotive Works produced a total of 54 units between 1951 and 1953. In addition, nine "calf" units were built for Oliver Iron Mining Company in Minnesota... |
1951 | 7 | B-B | Switcher | 750 hp | |
| BS10 | VO | 1943–1945 | 8 | B-B | Switcher | 1000 hp | |
| BS10 | DS-4-4-1000 | 1948–1950 | 137 | B-B | Switcher | 1000 hp | |
| BS12 | S-12 Baldwin S-12 The Baldwin S-12 was a 1,200-horsepower diesel-electric locomotive intended for use in yard switching. The Baldwin Locomotive Works produced a total of 451 units between 1951 and 1956... |
1951–1956 | 98 | B-B | Switcher | 1200 hp | |
| BF15 | DR-4-4-1500 Baldwin DR-4-4-15 The Baldwin DR-4-4-15 was a 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... |
1940–1950 | 34 | B-B | Freight | 1500 hp | Cab (A) aka “Sharknose Sharknose Sharknose is a term applied by railfans to the styling of several cab unit diesel locomotives built by the Baldwin Locomotive Works to the specifications of the Pennsylvania Railroad. The styling was by the PRR's preferred designer, Raymond Loewy, with the distinctive nose reminiscent of his... ” |
| BF15 | DR-4-4-1500 Baldwin DR-4-4-15 The Baldwin DR-4-4-15 was a 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... |
1940–1950 | 34 | B-B | Freight | 1500 hp | Cab (B) |
| BF16 | RF-16 (A) Baldwin RF-16 The Baldwin RF-16 is a cab unit-type diesel locomotive built for freight service by the Baldwin Locomotive Works between 1950 and 1953. All RF-16s were configured with a B-B wheel arrangement and ran on two AAR Type B two-axle road trucks, with all axles powered. A total of 109 cab-equipped A... |
1950–1952 | 72 | B-B | Freight | 1600 hp | Cab (A) aka “Sharknose Sharknose Sharknose is a term applied by railfans to the styling of several cab unit diesel locomotives built by the Baldwin Locomotive Works to the specifications of the Pennsylvania Railroad. The styling was by the PRR's preferred designer, Raymond Loewy, with the distinctive nose reminiscent of his... ” |
| BF16 | RF-16 (B) Baldwin RF-16 The Baldwin RF-16 is a cab unit-type diesel locomotive built for freight service by the Baldwin Locomotive Works between 1950 and 1953. All RF-16s were configured with a B-B wheel arrangement and ran on two AAR Type B two-axle road trucks, with all axles powered. A total of 109 cab-equipped A... |
1950–1952 | 30 | B-B | Freight | 1600 hp | Cab (B) |
| BP60a | DR-12-8-3000 Baldwin DR-12-8-1500/2 The Baldwin DR-12-8-1500/2 was the Baldwin Locomotive Works' first serious attempt at a production road diesel locomotive. The Baldwin type designation was DR-12-8-1500/2 meaning Diesel Road locomotive, with 12 axles , and two engines of 1,500 horsepower each... |
1947–1948 | 24 | 2-D-D-2 | Pass | 3000 hp | converted to helper aka "Centipede Baldwin DR-12-8-1500/2 The Baldwin DR-12-8-1500/2 was the Baldwin Locomotive Works' first serious attempt at a production road diesel locomotive. The Baldwin type designation was DR-12-8-1500/2 meaning Diesel Road locomotive, with 12 axles , and two engines of 1,500 horsepower each... " |
| BP20 | DR-6-4-2000 Baldwin DR-6 Baldwin Locomotive Works produced several different Baldwin DR-6 models of 6-axle passenger train-hauling diesel locomotives between 1945 and 1948. The series comprised eight individual versions, all of which sold only in small numbers; across all versions, only 39 locomotives were produced. Each... |
1948 | 18 | A1A-A1A | Pass | 2000 hp | Cab (A) |
| BP20 | DR-6-4-2000 Baldwin DR-6 Baldwin Locomotive Works produced several different Baldwin DR-6 models of 6-axle passenger train-hauling diesel locomotives between 1945 and 1948. The series comprised eight individual versions, all of which sold only in small numbers; across all versions, only 39 locomotives were produced. Each... |
1948 | 9 | A1A-A1A | Pass | 2000 hp | Cab (B) |
| BRS10 | DRS-4-4-1000 | 1949–1950 | 6 | B-B | Pass | 1000 hp | |
| BRS12 | RS-12 | 1951–1954 | 8 | B-B | Pass | 1200 hp | 3 units used in Pass service |
| BRS15 | DRS-4-4-1500 | 1950 | 8 | B-B | Pass | 1500 hp | |
| BRS16 | AS-16 | 1953–1955 | 28 | C-C | Pass | 1600 hp | 16 units used in Pass service |
| BRS24 | RT-624 Baldwin RT-624 The Baldwin RT-624 was a twin-engined diesel-electric locomotive, built by Baldwin Locomotive Works between 1951 and 1954.The RT-624, an improved version of the Baldwin DT-6-6-2000, was a center cab transfer locomotive,.... |
1951–1954 | 22 | C-C | Transfer | 2400 hp | |
| LRS25 | T2500 | 1950–1951 | 22 | C-C | Transfer | 2500 hp | Built by Lima Locomotive Works Lima Locomotive Works Lima Locomotive Works was an American firm that manufactured railroad locomotives from the 1870s through the 1950s. The company took the most distinctive part of its name from its main shops location in Lima, Ohio. The shops were located between the Baltimore & Ohio's Cincinnati-Toledo main line... |
General Electric
| PRR Class | Builder’s Model | Build date | Total produced | Wheel arrangement AAR wheel arrangement The AAR wheel arrangement system is a method of classifying locomotive wheel arrangements that was developed by the Association of American Railroads. It is essentially a simplification of the European UIC classification, and it is widely used in North America to describe diesel and electric... | Service | Power output Horsepower Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the... | 44 Ton GE 44-ton switcher The GE 44-ton switcher is a 4-axle diesel locomotive built by General Electric between 1940 and 1956. It was designed for industrial and light switching duties, often replacing steam locomotives that had previously been assigned these chores... | 1948–1950 | 46 | B-B | Switcher | 400 hp |
|---|---|---|---|---|---|---|---|
| GF25 | U25B GE U25B The GE U25B was General Electric's first independent entry into the United States domestic diesel-electric railroad locomotive market for heavy production road locomotives since 1936... |
1965 | 59 | B-B | Freight | 2500 hp | |
| GF25a | U25C GE U25C The U25C was General Electric's first six-axle road switcher intended for the United States domestic market. Launched in September 1963, it remained in production until December 1965. It was replaced by the U28C.-External links:* Sarberenyi, Robert. ... |
1965 | 20 | C-C | Freight | 2500 hp | |
| GF28a | U28C GE U28C The U28C was developed by General Electric from the U25C, with a slight increase in power of 300 hp . A passenger-hauling variant, the U28CG, was also produced for the Atchison, Topeka and Santa Fe Railway.-External links:* Sarberenyi, Robert. ... |
1966 | 15 | C-C | Freight | 2800 hp | |
| GF30a | U30C GE U30C The GE U30C was one of the earliest successes from General Electric in the diesel locomotive market. With 600 units sold, the U30C proved to be a choice for customers who weren't able to purchase SD40's or SD40-2's from EMD due to mass orders... |
1967 | 5 | C-C | Freight | 3000 hp |
EMD
| PRR Class | Builder’s Model | Build date | Total produced | Wheel arrangement AAR wheel arrangement The AAR wheel arrangement system is a method of classifying locomotive wheel arrangements that was developed by the Association of American Railroads. It is essentially a simplification of the European UIC classification, and it is widely used in North America to describe diesel and electric... | Service | Power output Horsepower Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the... | SW1 EMD SW1 The EMD SW1 was a diesel-electric switcher locomotive built by General Motors Electro-Motive Division between December 1938 and November 1953. Final assembly was at EMD's plant at La Grange, Illinois. The SW1 was the second generation of 600 hp switcher from EMD, succeeding the SW and SC... | 1942–1950 | 85 | B-B | Switcher | 600 hp |
|---|---|---|---|---|---|---|---|
| ES10 | NW2 EMD NW2 The EMD NW2 is a 1,000 hp , B-B switcher locomotive manufactured by General Motors Electro-Motive Division of La Grange, Illinois. The NW2 was manufactured from February, 1939 to December, 1949, and 1145 were produced – 1121 for the U.S., and 24 were exported to Canada. Starting in late 1948... |
1941–1948 | 32 | B-B | Switcher | 1000 hp | |
| ES12 | SW7-SW9 EMD SW9 An EMD SW9 is a diesel switcher locomotive built by General Motors Electro-Motive Division between December 1950 and December 1953. Power was provided by an EMD 567B 12-cylinder engine, producing .... |
1950–1953 | 84 | B-B | Switcher | 1200 hp | |
| ES12 | SW1200 EMD SW1200 An EMD SW1200 is a diesel switcher locomotive built by General Motors Electro-Motive Division between January 1954 and May 1966. Power was provided by an EMD 567C 12-cylinder engine which generated 1200 horsepower... |
1957 | 35 | B-B | Switcher | 1200 hp | |
| EF15 | F3A,F7A EMD F3 The EMD F3 was a , B-B freight- and passenger-hauling diesel locomotive produced between July 1945 and February 1949 by General Motors’ Electro-Motive Division. Final assembly was at GM-EMD's La Grange, Illinois plant... |
1947–1952 | 203 | B-B | Freight | 1500 hp | Cab A unit |
| EF15 | F3B,F7B EMD F3 The EMD F3 was a , B-B freight- and passenger-hauling diesel locomotive produced between July 1945 and February 1949 by General Motors’ Electro-Motive Division. Final assembly was at GM-EMD's La Grange, Illinois plant... |
1947–1952 | 107 | B-B | Freight | 1500 hp | Cab B unit |
| EPF15 | FP7A EMD FP7 The EMD FP7 was a , B-B dual-service passenger and freight-hauling diesel locomotive produced between June 1949 and December 1953 by General Motors' Electro-Motive Division and General Motors Diesel. Final assembly was at GM-EMD's La Grange, Illinois plant, excepting locomotives destined for... |
1952 | 40 | B-B | Pass | 1500 hp | Cab A unit |
| EPF15 | FP7B | 1952 | 14 | B-B | Pass | 1500 hp | Cab B unit |
| EP20 | E7A EMD E7 The EMD E7 was a , A1A-A1A passenger train locomotive manufactured by General Motors' Electro-Motive Division of La Grange, Illinois. The cab version, or E7A, was manufactured from February, 1945 to April, 1949, and 428 were produced. The booster version, or E7B, was manufactured from March, 1945... |
1945–1949 | 46 | A1A-A1A | Pass | 2000 hp | Cab A unit |
| EP20 | E7B | 1945–1949 | 14 | A1A-A1A | Pass | 2000 hp | Cab B unit |
| EP22 | E8A EMD E8 The EMD E8 was a , A1A-A1A passenger train locomotive manufactured by General Motors' Electro-Motive Division of La Grange, Illinois. The cab version, or E8A, was manufactured from August, 1949 to December, 1953, and 449 were produced – 446 for U.S., and 3 for Canada... |
1950–1952 | 74 | A1A-A1A | Pass | 2250 hp | Cab A unit |
| ERS15 | GP7 EMD GP7 The EMD GP7 is a four-axle diesel-electric locomotive built by General Motors Electro-Motive Division and General Motors Diesel between October, 1949 and May, 1954. Power was provided by an EMD 567B 16-cylinder engine which generated . The GP7 was offered both with and without control cabs, and... |
1952–1953 | 66 | B-B | Freight | 1500 hp | 10 units used in Pass service |
| ERS15ax | SD7 EMD SD7 An EMD SD7 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between February 1952 and November 1953. Power was provided by an EMD 567B 16-cylinder engine which generated .... |
1953 | 2 | B-B | Freight | 1500 hp | |
| ERS17 | GP9 EMD GP9 An EMD GP9 is a four-axle diesel locomotive built by General Motors' Electro-Motive Division in the United States, and General Motors Diesel in Canada between January, 1954, and August, 1963. US production ended in December, 1959, while an additional thirteen units were built in Canada, including... |
1955–1959 | 310 | B-B | Freight | 1750 hp | 40 units no cab |
| ERS17a | SD9 EMD SD9 An EMD SD9 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between January 1954 and June 1959. Power was provided by an EMD 567C 16-cylinder engine which generated . This model is, externally, similar to its predecessor, the SD7. The principal spotting feature are the... |
1957–1958 | 25 | C-C | Freight | 1750 hp | |
| EF22 | GP30 EMD GP30 The EMD GP30 was a 2,250 hp four-axle B-B diesel locomotive built by General Motors Electro-Motive Division of La Grange, Illinois between July, 1961 and November, 1963... |
1963 | 52 | B-B | Freight | 2250 hp | |
| EF25 | GP35 EMD GP35 An EMD GP35 is a 4-axle diesel locomotive built by General Motors Electro-Motive Division between July 1963 and December 1965 and by General Motors Diesel between May 1964 and January 1966. Power was provided by an EMD 567D3A 16-cylinder engine which generated .Many railroads traded in Alco and... |
1964–1965 | 119 | B-B | Freight | 2500 hp | |
| EF25a | SD35 EMD SD35 An EMD SD35 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between June 1964 and January 1966. Power was provided by an EMD 567D3A 16-cylinder engine which generated . A fuel tank was used on this unit. This locomotive model shared a common frame with the EMD SD28,... |
1965 | 40 | C-C | Freight | 2500 hp | |
| EF30a | SD40 EMD SD40 The EMD SD40 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between January 1966 and August 1972.-Design:Like its predecessor in EMD's catalog, the SD35, the SD40 is a high-horsepower, six-motor freight locomotive.... |
1966 | 65 | C-C | Freight | 3000 hp | |
| EF36 | SD45 EMD SD45 The EMD SD45 is a six-axle diesel locomotive built by General Motors Electro-Motive Division between December, 1965, and December, 1971. Power was provided by an EMD 645E3 twenty-cylinder engine which generated 3,600 HP. This locomotive shared the same common frame with the EMD SD38, EMD SD39, EMD... |
1966 | 65 | C-C | Freight | 3600 hp | |
| EF20a | GP38 EMD GP38 An EMD GP38 is a 4-axle diesel locomotive built by General Motors Electro-Motive Division between January 1966 and December 1971. Power was provided by an EMD 645 16-cylinder engine which generated .... |
1967 | 5 | B-B | Freight | 2000 hp | Built for PRSL Pennsylvania-Reading Seashore Lines Pennsylvania-Reading Seashore Lines was a railroad that operated in southern New Jersey in the 20th century. It was created as a joint venture of the Pennsylvania Railroad and the Reading Company .- History :... |
Fairbanks-Morse
| PRR Class | Builder’s Model | Build date | Total produced | Wheel arrangement AAR wheel arrangement The AAR wheel arrangement system is a method of classifying locomotive wheel arrangements that was developed by the Association of American Railroads. It is essentially a simplification of the European UIC classification, and it is widely used in North America to describe diesel and electric... | Service | Power output Horsepower Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the... | H10-44 FM H-10-44 The FM H-10-44 was a yard switcher produced by Fairbanks-Morse from August, 1944–March, 1950. The units featured a , six-cylinder opposed piston engine prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-A switcher trucks, with all axles powered... | 1948–1949 | 55 | B-B | Switcher | 1000 hp |
|---|---|---|---|---|---|---|---|
| FS12 | H12-44 FM H-12-44 The FM H-12-44 was a yard switcher produced by Fairbanks-Morse from May, 1950–March, 1961. The units featured a , six-cylinder opposed piston engine prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-A switcher trucks, with all axles powered and... |
1952–1954 | 16 | B-B | Switcher | 1200 hp | |
| FF20 | Erie Buil FM Erie-built The Erie-built was the first streamlined, cab-equipped dual service diesel locomotive built by Fairbanks-Morse, introduced as direct competition to such models as the ALCO PA and EMD E-unit... t |
1947–1948 | 36 | A1A-A1A | Freight | 2000 hp | Cab A |
| FF20 | Erie Built | 1947–1948 | 12 | A1A-A1A | Freight | 2000 hp | Cab B |
| FF16 | CF-16-4 FM Consolidated line The Consolidated line, or C-line, was a series of diesel-electric railway locomotive designs produced by Fairbanks-Morse and its Canadian licensee, the Canadian Locomotive Company. Individual locomotives in this series were commonly referred to as “C-liners”... |
1950 | 16 | B-B | Freight | 1600 hp | Cab A |
| FF16 | CF-16-4 | 1950 | 8 | B-B | Freight | 1600 hp | Cab B |
| FRS-16 | H16-44 FM H-16-44 The FM H-16-44 was a road switcher produced by Fairbanks-Morse from April 1950 – February 1963. The locomotive shared an identical platform and carbody with the predecessor Model FM H-15-44 , and were equipped with the same eight-cylinder opposed piston engine that had been... |
1952 | 10 | B-B | Freight | 1600 hp | |
| FRS-20 | H20-44 FM H-20-44 The FM H-20-44 was an multiple unit-capable end cab road switcher manufactured by Fairbanks-Morse from June 1947 – March 1954, and represented the company's first foray into the road switcher market. The , ten-cylinder opposed piston engine locomotive was referred to by F-M's engineering... |
1948–1951 | 38 | B-B | Freight | 2000 hp | |
| FRS-24 | H24-66 FM H-24-66 -External links:* * * *... |
1948–1951 | 38 | C-C | Freight | 2000 hp | aka Train Master |