The Baldwin DS-4-4-1000 were two models of four-axle 1,000 horsepower (746 kW) diesel-electric switcher locomotives built by the Baldwin Locomotive Works between 1946 and 1951. The first models (56 locomotives) were powered by an 8-cylinder normally aspirated prime mover, but from 1948, a change was made to the second model powered by a 6-cylinder turbocharged engine. These two models replaced the VO-1000 in Baldwin's catalogue, and were in turn replaced by the S-12 in 1951.

This article includes a list of general references, but it lacks sufficient corresponding inline citations. (June 2017)

Quick Facts Type and origin, Power type ...

Baldwin DS-4-4-1000-NA (608NA)
Baldwin DS-4-4-1000 #41, of the Chicago Great Western at a yard in Chicago, Illinois on September 10. 1967
Type and origin Power type Diesel-electric Builder Baldwin Locomotive Works Model DS-4-4-1000 (608NA) Build date June 1946 – January 1948 Total produced 56
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) Prime mover Baldwin 608NA Engine type Four-stroke diesel Aspiration Normally aspirated, solid injection Displacement 1,979 cu in (32.43 L) per cylinder 15,831 cu in (259.42 L) total Generator DC generator Traction motors DC traction motors Cylinders Straight-8 Cylinder size 12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm) Transmission Electric Loco brake Air Train brakes Air
Performance figures Power output 1,000 hp (746 kW)
Career Locale North America

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Quick Facts Balwin DS-4-4-1000-SC (606SC), Type and origin ...

Balwin DS-4-4-1000-SC (606SC)
Pennsylvania Railroad DS4-4-1000-SC #5586 in Conway Yard, Conway, Pennsylvania (date unknown)
Type and origin Power type Diesel-electric Builder Baldwin Locomotive Works Model DS-4-4-1000 (606SC) Build date January 1948 – November 1951 Total produced 446
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) Length 46 ft 6+1⁄4 in (14.18 m) Width 9 ft 11+1⁄4 in (3.03 m) Height 14 ft (4.27 m) Loco weight 230,000 lb (100,000 kg) Prime mover Baldwin 606SC RPM range 625 rpm max. Engine type Four-stroke diesel Aspiration Turbocharged Displacement 1,979 cu in (32.43 L) per cylinder 11,874 cu in (194.58 L) total Generator Westinghouse 480DC Traction motors Westinghouse 362-D, 4 off Cylinders Straight-6 Cylinder size 12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm) Loco brake Air Train brakes Air
Performance figures Power output 1,000 hp (746 kW) Tractive effort 57,500 lb (26,100 kg)
Career Locale North America

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• Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. p. 161. ISBN 0-87564-715-4.
• Kirkland, John F. (November 1994). The Diesel Builders volume 3: Baldwin Locomotive Works. Pasadena, California: Interurban Press. ISBN 0-916374-93-9.
• Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Kalmbach Books. pp. 282, 289. ISBN 0-89024-026-4.

• Baldwin DS-4-4-1000 roster
• Preserved Baldwin and Lima locomotives
• DS-4-4-1000 — Original owners