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Steam
Tender Locomotives with up to Two Coupled Axles
Tender Locomotives with Three Coupled Axles
0-6-0 “Six-coupled”
2-6-0 “Mogul”
2-6-2 “Prairie”
4-6-0 “Ten-wheeler”
4-6-2 “Pacific”
Atlanta & West Point class P-74
Badenian IV f
Badenian IV h
Baltimore & Ohio class P-7
Bavarian S 3/6
Belgian Railway type 10
Boston & Maine class P-4
British Rail Standard class 7 “Britannia”
Canadian Pacific class G3
Canadian Pacific class G5
Central RR of New Jersey classes G-1s to G-4s ( classes P-43, P-47 and P-52)
Central South African class 10
Central South African class 10-2
Chesapeake & Ohio class F-16
Chicago, Milwaukee, St. Paul & Pacific (Milwaukee Road) class F3
Chicago, Rock Island & Pacific (Rock Island) class P-40
German Federal Railway class 10
German Reichsbahn 07 1001
German Reichsbahn 18 201
German Reichsbahn class 01
German Reichsbahn class 0110
German Reichsbahn class 015
German Reichsbahn class 02
German Reichsbahn class 03
German Reichsbahn class 0310
German Reichsbahn class 04
German Reichsbahn H 02 1001
Alsace-Lorraine S 12
Erie class K-5a and b
French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”
Federated Malay States class H
Federated Malay States class L
Federated Malay States classes K1 and K2
Federated Malay States classes O1 to O4
French State Railway (État) 231-501 to 783
Grand Trunk class K-3
Great Western Railway No. 111 “The Great Bear”
Indian Railways class WP
Italian State Railway class 690 II
Italian State Railway class 691
Japanese National Railways classes C59 and C60
Imperial-Royal State Railways class 210
Imperial-Royal State Railways class 310
Leopoldina No. 306 to 333
London & North Eastern Gresley classes A1 and A3
London & North Eastern Gresley class A4
London & North Eastern Peppercorn class A1
London, Midland & Scottish Coronation class
Louisville & Nashville class K-2
Maine Central classes C, C1 and C2
Maine Central classes C-3 and C-3B
Missouri Pacific class P-69
New York Central class K-3
New York Central class K-5
New Zealand Railways class Q (1901)
New Zealand Railways classes A and AD
New Zealand Railways class AB
Paris-Lyon-Méditerranée No. 6001, 6011 to 6030 and 6221 to 6285
Paris-Orléans No. 4501 to 4600
Paris-Orléans No. 3701 to 3731
Pennsylvania class K4s
Rede de Viação Cearense class 400
Saxon XVIII H
Santa Fé class 3400
Soo Line classes H-3 and H-21 to H-23
Southern Railway (UK) Merchant Navy class
Southern Railway (UK) West Country and Battle of Britain-classes
Southern Railway (USA) class Ps-4
South Manchurian Railway Pashisa and Pashiha class
South Manchurian Railway Pashiko class
South Manchurian Railway Pashiro class
South Manchurian Railway Pashina class
Tasmanian Government class M and MA
US Railroad Administration Light Pacific
US Railroad Administration Heavy Pacific
Wabash class J-2
Western Australian Government Railways class E (1902)
Western Australian Government Railways classes P and Pr “River”
Württemberg C
Lehigh Valley class K-6b
Western Australian Government Railways classes Pm and Pmr
Boston & Maine classes P-1 and P-2
Little River Railroad No. 110
4-6-4 “Hudson”, “Baltic”
Tender Locomotives with Four and More Coupled Axles
Tank Locomotives up to Two Coupled Axles
Tank Locomotives with Three Coupled Axles
Tank Locomotives Four and More Coupled Axles
Articulated and Bogie
Special Types
Electric
Diesel
Railcars and Multiple Units
Page views since 2023-01-26: 438090
Pennsylvania class K4s
United States | 1914 | 425 produced
No. 5351 in December 1955 in Camden, New Jersey
No. 5351 in December 1955 in Camden, New Jersey
Neil Norkaitis / collection Taylor Rush
Streamlined No. in front of a second non-streamlined K4s
Streamlined No. in front of a second non-streamlined K4s
William vu

The most important express locomotive of the PRR from 1914 until it was replaced by diesel locomotives. It also survived all of its intended successors. Used the same boiler with Belpaire firebox as the L1s Mikado and influenced many other locomotives, including overseas. Number 3768 was fitted with a full streamlining by Raymond Loewy and others received partial fairing.

Variantas builtstreamlined
General
Built1914-19281936
ManufacturerAltoona, Baldwin
Axle config4-6-2 (Pacific) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length83 ft 6 in
Wheelbase36 ft 2 in
Rigid wheelbase13 ft 10 in
Total wheelbase74 ft 8 in87 ft
Service weight304,500 lbs338,000 lbs
Adhesive weight199,500 lbs223,000 lbs
Total weight517,225 lbs630,000 lbs
Axle load65,000 lbs74,500 lbs
Water capacity7,000 us gal
Fuel capacity32,000 lbs (coal)
Boiler
Grate area70 sq ft
Firebox area322.6 sq ft305 sq ft
Tube heating area3,735.4 sq ft3,736 sq ft
Evaporative heating area4,058 sq ft4,041 sq ft
Superheater area943 sq ft
Total heating area5,001 sq ft4,984 sq ft
Variantas builtstreamlined
Power Plant
Driver diameter80 in
Boiler pressure205 psi
Expansion typesimple
Cylinderstwo, 27 x 28 in
Power
Power sourcesteam
Indicated power3,285 hp (2,450 kW)
Estimated power3,260 hp (2,431 kW)
Optimal speed47 mph
Top speed90 mph
Starting effort44,460 lbf
Calculated Values
steam locomotive
express
streamline
J.T. Wallis
last changed: 02/2023
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