Union Railroad 0-10-2

Infobox Locomotive
name = Union Railroad 0-10-2
powertype = Steam
builder = Baldwin Locomotive Works
builddate = 1936–1939
totalproduction = 10
whytetype = 0-10-2
uicclass = E1'
gauge = RailGauge|ussg
driversize = 61 in (1550 mm)
weight = 644,510 lb (292.34 t)
tenderc
short tons (13 t) coal
boilerpressure = 260 lbf/in² (1.8 MPa)
cylindercount = 2
cylindersize = 28 in bore × 32 in stroke (711.2 mm × 812.8 mm)
valvegear = Walschaerts
tractiveeffort = 90,900 lbf (locomotive) + 17,150 lbf (tender booster) (404.3 kN + 76.3 kN)
railroad = Union Railroad, Duluth, Missabe and Iron Range
roadnumber = URR 301-310; DM&IR 601-610

Ten Union Railroad 0-10-2 steam locomotives were built in 1936–1939 by the Baldwin Locomotive Works. These were the only 0-10-2 locomotives ever built in the United States and this purchase gave the name "Union" to this type. [cite book
title = American Locomotives
author = Alexander, Edwin P.
year = 1950
pages = 194–195
publisher = Bonanza]

The Union Railroad was a switching and transfer line owned by U.S. Steel, serving a number of plants in the area and connecting with six trunk line railroads. Operation was only at low speed, thus a leading truck's stability was not required. The intent was to eliminate helper requirements on grades, and thus a locomotive larger than the Union's previous switchers and 2-8-0 "Consolidations" was needed. Ten driving wheels allowed the application of sufficient tractive effort within the axle load limits of the line, and the requirement for a large firebox and plentiful steam-raising ability necessitated the trailing truck. To increase tractive effort still further, a booster engine was fitted to the leading tender truck.

Upon dieselization of the Union in 1949, the locomotives were sold to fellow U.S. Steel railroad the Duluth, Missabe and Iron Range, where they served until 1962. One of these locomotives survives as a static exhibit at Greenville, Pennsylvania. [cite web
url = http://www.steamlocomotive.info/vlocomotive.cfm?Display=1016
title = Duluth, Missabe & Iron Range RR No. 604
work = SteamLocomotive.info
accessdate = 2006-12-16]

References