EMD SW1001
Encyclopedia
The EMD SW1001 was a 1000 hp diesel locomotive
for industrial switching
service built by General Motors' Electro-Motive Division between September 1968 and June 1986. A total of 230 examples were constructed, mainly for North American railroads and industrial operations.
The SW1001 was developed because EMD's SW1000
model had proved unpopular among industrial railroad customers, as the heights of its walkway and cab eaves were much greater than those of earlier EMD switcher models. The overall height was similar, but the SW1000's roof was much flatter in curvature. Industrial railroads that only operated switchers often had facilities designed to the proportions of EMD's earlier switchers.
The SW1001, in essence, placed the hood and powertrain of the SW1000 with the underframe and cab of the earlier SW1200
. The EMD 645
-series diesel engine
had a deeper crankcase and oil pan than the SW1200's EMD 567
-series engine. The engine had to be mounted on risers for sufficient clearance, raising the whole hood about 6 in (152 mm) above the walkway compared to the SW1000, and requiring a spacer under the hood. The cab was similar to that of the SW1200, but not identical; it is longer, and has a different window arrangement. The SW1001 uses the same pilot
plates as the SW1000; given the lower frame height, these protrude above the walkway deck height, giving the most obvious SW1001 spotting feature.
. 18 by companies in Mexico; 12 by AHMSA, 3 by Lazaro Cardenas Steel, and 3 by Pemex
.
In Africa 5 units in total were supplied to the Boke project in Guinea
in the early 1970s and 18 units were acquired by the railways of Morocco (ONCFM) in 1982 as type DI 500. In Asia the Korean National Railway acquired 28 between 1969 and 1971.
1 unit was acquired in 1980 by Foster Yeoman
(vehicle code Y44), and another by Hanson Aggregates, (Hanson plc
) in 2000 both for use on quarry industrial sites in the UK.
5 units were bought for the government railways of Saudi Arabia in 1981.
Additionally 60 variants with a redesigned cab were built under license as the RENFE Class 310
for the railways of Spain between 1989 and 1991.
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...
for industrial switching
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...
service built by General Motors' Electro-Motive Division between September 1968 and June 1986. A total of 230 examples were constructed, mainly for North American railroads and industrial operations.
The SW1001 was developed because EMD's SW1000
EMD SW1000
An EMD SW1000 is a diesel switcher locomotive built by General Motors Electro-Motive Division between June 1966 and October 1972. Power was provided by an EMD 645E 8-cylinder engine which generated...
model had proved unpopular among industrial railroad customers, as the heights of its walkway and cab eaves were much greater than those of earlier EMD switcher models. The overall height was similar, but the SW1000's roof was much flatter in curvature. Industrial railroads that only operated switchers often had facilities designed to the proportions of EMD's earlier switchers.
The SW1001, in essence, placed the hood and powertrain of the SW1000 with the underframe and cab of the earlier 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...
. The EMD 645
EMD 645
The EMD 645 family of diesel engines was designed and manufactured by the Electro-Motive Division of General Motors. Intended primarily for locomotive, marine and stationary engine use, one 16-cylinder version powered the 33-19 "Titan" prototype haul truck designed by GM's Terex...
-series diesel engine
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...
had a deeper crankcase and oil pan than the SW1200's EMD 567
EMD 567
The EMD 567 is a line of diesel engines built by General Motors' Electro-Motive Division. This engine, which succeeded Winton's 201-A, was used in EMD's locomotives from 1938 until its replacement in 1966 by the EMD 645. It has a bore of , a stroke of and a displacement of 567 in³ per cylinder...
-series engine. The engine had to be mounted on risers for sufficient clearance, raising the whole hood about 6 in (152 mm) above the walkway compared to the SW1000, and requiring a spacer under the hood. The cab was similar to that of the SW1200, but not identical; it is longer, and has a different window arrangement. The SW1001 uses the same pilot
Pilot (locomotive)
In railroading, the pilot is the device mounted at the front of a locomotive to deflect obstacles from the track that might otherwise derail the train. In some countries it is also called cowcatcher or cattle catcher....
plates as the SW1000; given the lower frame height, these protrude above the walkway deck height, giving the most obvious SW1001 spotting feature.
Export models
The SW1001 locomotive type was used in a number of countries outside the USA: in the Americas 4 units were bought by Canadian businesses; 2 by Saskatchewan Power, and 2 by the National Harbours BoardNational Harbours Board
The National Harbours Board was the administrative body that controlled the business and service operations in major Canadian ports in the years 1936 to 1983 and was also responsible for coordination and determination of policy, and planning and engineering of capital works. It reported on its...
. 18 by companies in Mexico; 12 by AHMSA, 3 by Lazaro Cardenas Steel, and 3 by Pemex
Pemex
Petróleos Mexicanos or Pemex is a Mexican state-owned petroleum company. As of 2010, with a total asset worth of $415.75 billion, it is the second non-publicly listed largest company in the world by total market value, and Latin America's second largest enterprise by annual revenue as of 2009...
.
In Africa 5 units in total were supplied to the Boke project in Guinea
Guinea
Guinea , officially the Republic of Guinea , is a country in West Africa. Formerly known as French Guinea , it is today sometimes called Guinea-Conakry to distinguish it from its neighbour Guinea-Bissau. Guinea is divided into eight administrative regions and subdivided into thirty-three prefectures...
in the early 1970s and 18 units were acquired by the railways of Morocco (ONCFM) in 1982 as type DI 500. In Asia the Korean National Railway acquired 28 between 1969 and 1971.
1 unit was acquired in 1980 by Foster Yeoman
Foster Yeoman
Foster Yeoman Limited, based in the United Kingdom, is one of Europe's largest quarrying and asphalt companies, owned by Swiss construction materials conglomerate Holcim.-Company history:...
(vehicle code Y44), and another by Hanson Aggregates, (Hanson plc
Hanson plc
Hanson plc is a British based international building materials company, headquartered in Maidenhead. Traded on the London Stock Exchange and a constituent of the FTSE 100 Index for many years, the company was acquired by a division of German rival Heidelberg Cement in August 2007.-History:Hanson...
) in 2000 both for use on quarry industrial sites in the UK.
5 units were bought for the government railways of Saudi Arabia in 1981.
Additionally 60 variants with a redesigned cab were built under license as the RENFE Class 310
RENFE Class 310
The RENFE Class 310 is a class of 60 four axle Bo'Bo' diesel electric shunting and freight locomotives built by Meinfesa with General Motors Electromotive Division components ....
for the railways of Spain between 1989 and 1991.