The reference for locomotives and railcars
Indian Railways class WDS-6
India | 1975 | 411 produced
No. 36238 with a heavy passenger train at Visakhapatnam
No. 36238 with a heavy passenger train at Visakhapatnam

In the 1970s, a heavy shunting locomotive was needed to assemble heavy passenger trains, since the existing WDS-4 were no longer up to the job. The new locomotive was given the designation WDS-6, which stood for “Wide Gauge, Diesel, Shunting, 6th Generation”. It had the same powerpack as the meter-gauge YDM-4, i.e. the six-cylinder ALCO 251-D with an output of 1,400 hp. Production started in 1975 at the Banaras Locomotive Works in Varanasi. Later, also in Parel, locomotives were assembled from components that had been manufactured in the BLW. Of the 411 WDS-6s built, many were later sold to industry or public sector undertakings.

Builtfrom 1975
ManufacturerBanaras, Parel
Axle configC-C 
Gauge5 ft 6 in (Indian broad gauge)
Dimensions and Weights
Length52 ft 9 3/8 in
Wheelbase42 ft 1 1/4 in
Service weight249,122 lbs
Adhesive weight249,122 lbs
Axle load41,667 lbs
Power sourcediesel-electric
Top speed44 mph
Starting effort74,861 lbf
EngineALCO 251-D
Engine type6-cyl. diesel
Fuel793 us gal (diesel)
Engine output1,400 hp (1,044 kW)
Power Plant
Calculated Values
diesel locomotive
last changed: 08/2023

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