Pennsylvania Railroad Class K2

Pennsylvania Railroad Class K2
No. 1458 in Hicksville, NY circa 1940
Technical specifications
Manufacturer(s)	PRR's Juniata Shops
Build date	1910
Total produced	72
Classification	K2
Wheel arrangement	4-6-2 "Pacific"
Rail gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Valve gear	Walschaerts
Cylinders	Two, Outside
Boiler pressure	205 psi (14.10 kPa)
Bore stroke	26 in x 26 in (660 mm x 660 mm)
Firegrate area	55.40 sq ft (5.15 m2)
Fuel type	Coal
Heating area	845 sq ft (78.53 m2)
Performance figures
Tractive effort	38,283 lbf (170.3 kN)
Factor of adhesion	4.95
Service information
Running numbers	23, 77, 150, 163, 247, 347, 382, 397, 482, 654, 732, 821, 838, 927, 997, 1061, 1119, 1184, 1246, 1253, 1396, 1458, 1525, 2125, 2437, 2980, 3250, 3251, 3320-3327, 6621, 6625, 7048, 7114, 7137, 7153, 7175, 7202, 7510-7528, 8635-8644, 9990-9999
Disposition details
Preserved	None were preserved
Disposition	All Scrapped

The Pennsylvania Railroad Class K2 were a class of 72 Baldwin-built 4-6-2 "Pacific" type steam locomotive that were built by the Pennsylvania Railroad themselves at their own Juniata Shops in 1910.

History

A total of 72 examples of the Pennsylvania Railroad Class K2 were constructed by the Pennsylvania Railroad themselves at their own Juniata Shops in 1910 as part of their K Series.

The K2s were one of Pennsylvania's first examples of a 4-6-2 Pacific passenger steam locomotive. The first of this type ordered by the PRR was the lone K28, bought from the Pittsburgh Works of the American Locomotive Company (ALCo). It was given the road number 7067 and had 80" drivers, 24" x 26" cylinders, a boiler pressure of 205 psi, exerted 32,620 lbs of tractive effort and weighed 273,600 pounds. After being put through the rugged and strict testing the PRR was famous for, the company decided that this locomotive type was what it needed for passenger service. Development began on more "personalized" engines better suited to the unforgiving mountain terrain which made up the majority of the PRR's mainline.

The first K2s were near copies of the original ALCO locomotive, sharing many characteristics such as duplicate driver diameter, cylinder diameter, tractive effort, and boiler pressure, though they were slightly heavier at 278,00 pounds.

Nos. 732, 1245, 1458, 3325, 3366, 3378, and 3570 were often leased to work on the Long Island Railroad, a subsidiary of the Pennsylvania Railroad.

Very few of this class survived the 1930s with most being retired early in that decade until they were all withdrawn from active service when the Pennsylvania Railroad had gave up steam. Not a single example of the Class K2 was preserved as they were all scrapped after the Pennsylvania Railroad had dieselized. All that's left of the Pennsylvania Railroad Class K locomotives are two surviving K4 Pacifics, Nos. 1361 and 3750.

Stock list

Image	Loco No.	Build date	Manufacturer	Status	Notes
Frameless	23	1910	PRR's Juniata Shops	Scrapped
Frameless	77	1910	PRR's Juniata Shops	Scrapped
Frameless	150	1910	PRR's Juniata Shops	Scrapped
Frameless	163	1910	PRR's Juniata Shops	Scrapped
Frameless	247	1910	PRR's Juniata Shops	Scrapped
Frameless	347	1910	PRR's Juniata Shops	Scrapped
Frameless	382	1910	PRR's Juniata Shops	Scrapped
Frameless	397	1910	PRR's Juniata Shops	Scrapped
Frameless	482	1910	PRR's Juniata Shops	Scrapped
Frameless	654	1910	PRR's Juniata Shops	Scrapped
Frameless	732	1910	PRR's Juniata Shops	Scrapped	Often leased to work on the Long Island Railroad, a subsidiary of the Pennsylvania Railroad.
Frameless	821	1910	PRR's Juniata Shops	Scrapped
Frameless	838	1910	PRR's Juniata Shops	Scrapped
Frameless	927	1910	PRR's Juniata Shops	Scrapped
Frameless	997	1910	PRR's Juniata Shops	Scrapped
Frameless	1061	1910	PRR's Juniata Shops	Scrapped
Frameless	1119	1910	PRR's Juniata Shops	Scrapped
	1458	1910	PRR's Juniata Shops	Scrapped	Often leased to work on the Long Island Railroad, a subsidiary of the Pennsylvania Railroad.
Frameless	1525	1910	PRR's Juniata Shops	Scrapped
Frameless	2125	1910	PRR's Juniata Shops	Scrapped
Frameless	2437	1910	PRR's Juniata Shops	Scrapped
Frameless	2980	1910	PRR's Juniata Shops	Scrapped
Frameless	3250	1910	PRR's Juniata Shops	Scrapped
Frameless	3251	1910	PRR's Juniata Shops	Scrapped
Frameless	3320	1910	PRR's Juniata Shops	Scrapped
Frameless	3321	1910	PRR's Juniata Shops	Scrapped
Frameless	3322	1910	PRR's Juniata Shops	Scrapped
Frameless	3323	1910	PRR's Juniata Shops	Scrapped
Frameless	3324	1910	PRR's Juniata Shops	Scrapped
Frameless	3325	1910	PRR's Juniata Shops	Scrapped	Often leased to work on the Long Island Railroad, a subsidiary of the Pennsylvania Railroad.
Frameless	3326	1910	PRR's Juniata Shops	Scrapped
Frameless	3327	1910	PRR's Juniata Shops	Scrapped
Frameless	6621	1910	PRR's Juniata Shops	Scrapped
Frameless	6625	1910	PRR's Juniata Shops	Scrapped
Frameless	7048	1910	PRR's Juniata Shops	Scrapped
	7114	1910	PRR's Juniata Shops	Scrapped
Frameless	7137	1910	PRR's Juniata Shops	Scrapped
Frameless	7153	1910	PRR's Juniata Shops	Scrapped
Frameless	7175	1910	PRR's Juniata Shops	Scrapped
Frameless	7202	1910	PRR's Juniata Shops	Scrapped
Frameless	7510	1910	PRR's Juniata Shops	Scrapped
Frameless	7511	1910	PRR's Juniata Shops	Scrapped
Frameless	7512	1910	PRR's Juniata Shops	Scrapped
Frameless	7513	1910	PRR's Juniata Shops	Scrapped
Frameless	7514	1910	PRR's Juniata Shops	Scrapped
Frameless	7515	1910	PRR's Juniata Shops	Scrapped
Frameless	7516	1910	PRR's Juniata Shops	Scrapped
Frameless	7517	1910	PRR's Juniata Shops	Scrapped
Frameless	7518	1910	PRR's Juniata Shops	Scrapped
Frameless	7519	1910	PRR's Juniata Shops	Scrapped
Frameless	7520	1910	PRR's Juniata Shops	Scrapped
Frameless	7521	1910	PRR's Juniata Shops	Scrapped
Frameless	7522	1910	PRR's Juniata Shops	Scrapped

References

• http://www.trainsarefun.com/lirr/lirrengines.htm