Indian locomotive class WDS-6

WDS-6
Tuglakabad based WDS-6 roaming at Anand Vihar Terminal.
Type and origin
Power typeDiesel
BuilderBLW, Central Railway Loco Workshop, Parel
Build date1975+
Total producedWDS-6: 300
WDS-6AD: 111
RebuilderParel Workshops
Specifications
Configuration:
 • UICCo′Co′
 • CommonwealthCo-Co
Gauge1,676 mm (5 ft 6 in)
BogiesALCO Asymmetric cast frame trimount
Wheel diameter1,092 mm (3 ft 7 in)
Wheelbase12.834 m (42 ft 1+14 in)
Length16.088 m (52 ft 9+38 in)
Width2.864 m (9 ft 4+34 in)
Height4.185 m (13 ft 8+34 in)
Axle load21,000 kg (46,000 lb)
Loco weight113,000 kg (249,000 lb)
Fuel typeDiesel
Fuel capacity3,000 L (660 imp gal; 790 US gal)
Lubricant cap.530 L (120 imp gal; 140 US gal), 630 L (140 imp gal; 170 US gal) DLW
Water cap.22 L (4.8 imp gal; 5.8 US gal), 28 L (6.2 imp gal; 7.4 US gal) DLW
Prime moverALCO 251-D
RPM range400-1100
Engine typeInline, 6-cylinder, diesel
AspirationTurbo-supercharged
Displacement267 mm
GeneratorDC
Traction motors6 DC
Cylinders6
TransmissionDiesel-electric transmission
MU working2
Loco brake28LV-1, Air brake for Locomotive using SA-9 brake handle
Train brakesOriginally vacuum, or air, but some modified to dual
Performance figures
Maximum speed71 km/h (44 mph)
Power outputMax:1,400 hp (1,000 kW)
Site rated:1,300 hp (970 kW)
Tractive effort34.000 t (33 long tons; 37 short tons) maximum 16.050 t (16 long tons; 18 short tons) continuous
Career
OperatorsIndian Railways
LocaleAll over Indian Railways, also leased and sold to some private- and public-sector industrial concerns
Current ownerIndian Railways, private industries
DispositionActive

The Indian locomotive class WDS-6 is a diesel-electric locomotive used by the Indian Railways mainly for shunting and also for performing departmental duties. The model name stands for broad gauge (W), Diesel (D), Shunting (S) engine, 6th generation (6). As of April 2022, 375 units of this class are currently in use all over India.