Before reading I thanks to Wiki and Indian Railways for providing Images
and Information of their locomotive, and Indian Railways for providing such
a great service in India.
We love India and Indian Railways, This blog is written in 2019 so there
must be some time differences. Hopefully, I will try to update it.
WDG Series -
These Locomotives are specially made for Goods trains. So, they have G
on their last
(WDG 2) WDG 3A
The class WDM-3A is Indian Railways' workhorse diesel-electric
locomotive. Since 1993, it has been manufactured in India by the Diesel
Locomotive Works, Varanasi. The model name stands for broad gauge, diesel,
mixed-traffic engine. The WDM-3A is the most common diesel locomotive of
Indian Railways. - Wikipedia
- Build date: 22 August 1994
- Fuel type: Diesel fuel
- Preserved: 1
- Transmission: Diesel-electric transmission
- Model: ALCO DL560C variant
- Rebuilder: Diesel-Loco Modernisation Works, Patiala
- Builders: Diesel Locomotive Works, Diesel Loco Modernisation Works
WDG 3B
WDG-3B, -3C and -3D: Upgraded WDG-2 or -3As. The WDG-3B and WDG-3C are
rebuilt WDG-3As, and the WDG-3C is rated at 3,330 hp (2,480 kW).
WDG 4 (EMD GT46MAC)
The EMD GT46MAC is a freight-hauling diesel-electric locomotive with AC
electric transmission built by General Motors Electro-Motive Diesel in
1997–1998 for Indian Railways, where they are classed as WDG 4.
-Wikipedia
- Aspiration: Turbocharger
- Fuel type: Diesel fuel
- Manufacturer: Diesel Locomotive Works
- Train brake: Railway air brake
- Transmission: Diesel-electric transmission
- Model: GT46MAC
- Builders: Electro-Motive Diesel, Diesel Locomotive Works
WDG 4D (Vijay)
A WDG-4 with dual air-conditioned cabs and a maximum speed of 100
km/h (62 mph), India's first dual-cab diesel freight engine.
WDG 5 (Bheem)
With an output of 5,500 bhp, the WDG5 is the strongest diesel locomotive ever to run on the Indian
rail network. In combination with its record high tractive effort of
560 KN, it can pull significantly more load at higher speeds, thus
enabling Indian Railways to increase the system throughput in the rail
network.
Developed by Diesel Locomotive Works and supported by
Electro-Motive Diesels. The series is Nicknamed as BHEEM, after
great warrior from the Indian Epic Mahabharat. These locomotives are
based on EMD SD80MAC. Their prime mover is a 20 cylinder EMD 710.
their model name is EMD GT50AC. Progress Rail gave this name to WDG5
BHEEM. It means:-
G = Narrow body with cab at ONLY one end T = Turbocharged Engine 50
= V-20 version of EMD 710 (EMD 20N-710G3B-EC) AC = AC Electric
Traction
WDM Series -
These Locomotives are specially made for both Passenger and Goods
trains. So, they have M on their last. M means Mixed.
WDM 1
Indian locomotive class WDM-1
The 1st class of Wide Gauge, Diesel-powered, Mixed load, i.e., meant
for hauling both freight and passenger trains. These are the first
mainline diesel engines imported after Independence. They were even the
fastest diesel locomotives until the advent of WDM 2 and WDM 4. They
used to haul ore/freight trains on SER. - Wikipedia
- Model: ALCO FA
- Builder: American Locomotive Company
- Fuel type: Diesel fuel
- Total produced: 100
- Withdrawn: 2000
- Locale: Eastern Railway zone, South Eastern Railway zone
WDM 2
Indian locomotive class WDM-2
The Indian locomotive class WDM-2 is a class of diesel-electric
locomotive that was developed in 1962 by American Locomotive Company
for Indian Railways. The model name stands for broad gauge, Diesel,
Mixed traffic engine, 2nd generation. They entered service in 1962. -
Wikipedia
- Model: ALCO DL560C
- Operator: Indian Railways
- Aspiration: Turbocharger
- Build date: 1962
- Fuel type: Diesel fuel
- Preserved: 9
- Transmission: Diesel-electric transmission
WDM 2A and 2B
WDM-2 variants; the WDM-2A has dual brakes, and the 2B usually
has air brakes.
WDM 2G
Indian Railways' first Multi-Gen-set locomotive, manufactured by DLMW
Patiala in 2013. In February 2014, two locos were in service: #80000
and #80001. They have been approved for a maximum speed of 105 km/h
(65 mph).
WDM 3/3A
Indian locomotive class WDM-3A
The class WDM-3A is Indian Railways' workhorse diesel-electric
locomotive. Since 1993, it has been manufactured in India by the
Diesel Locomotive Works, Varanasi. The model name stands for broad
gauge, diesel, mixed-traffic engine. The WDM-3A is the most common
diesel locomotive of Indian Railways. - Wikipedia
- Build date: 22 August 1994
- Fuel type: Diesel fuel
- Preserved: 1
- Transmission: Diesel-electric transmission
- Model: ALCO DL560C variant
- Rebuilder: Diesel-Loco Modernisation Works, Patiala
- Builders: Diesel Locomotive Works, Diesel Loco Modernization Works
WDM 3B

The Indian locomotive class WDM-3D is a class of diesel-electric
locomotive that was developed in 2003 by Diesel Locomotive Works
(DLW), Varanasi for Indian Railways. The model name stands for
broad gauge (W), Diesel (D), Mixed traffic (M) engine with 3300
horsepower (3D). They entered service in 2003. A total of 590+
WDM-3D were built at Diesel Locomotive Works (DLW), Varanasi
between 2003 and 2016.
The WDM-3D is one of the most successful locomotives of Indian
Railways serving both passenger and freight trains. A few WDM-3D
units were exported to neighboring countries like Sri Lanka. A
significant number of these locomotives are still in use, both on
mainline and departmental duties. As of January 2020, most of the
locomotives still retain "operational status" on the mainline as
WDM-3D, with further examples having been converted from
WDM-3B.
Specification
It is the higher-powered version of the Indian locomotive class
WDM-3A. These locos have a 3300 hp power pack, with maximum
available traction power of 2925 hp. The engine is an enhanced
version of the 16-cylinder Alco 251C model with max. speed of
160 km/h. The bogies are Improved Fabricated (welded) Alco
High-Adhesion Co-Co bogies with stem type vertical and lateral
dampers in place of 'eye' type which helps reduce wheel slip and
maintenance of
The loco features Left-hand drive, WDG-3A style High Adhesion
bogies, air cylinder under the footboard, WDP-4 style fuel
tanks, engine doors like WDP-4, marker lights outside cabin
doors, electronic horn, High capacity buffers. Components and
auxiliaries have been improved with the aim of making the duty
schedule longer between maintenance visits to the shed.
WDM 3C
Higher-powered versions of the WDM-3A, rated at 3,300 hp
(2,500 kW). The WDM-3C is rebuilt from the WDM-2. The
WDM-3C have maximum speeds of 120 km/h (75 mph).
WDM 3D
ALCO DL560C Locomotive class
The ALCO DL560C is a series of the diesel-electric locomotive
with AC electric transmission designed by the American
Locomotive Company and produced under license by Diesel
Locomotive Works Varanasi, India for Indian Railways as their
classes WDM-2, WDM-3A/2C, WDM-3D and WDG-3A for operation in
India. - Wikipedia
- Aspiration: Twincharger
- Fuel type: Diesel fuel
- Locale: India
- Operator: Indian Railways
- Train brake: Railway air brake
- Transmission: Diesel-electric transmission
- Model: ALCO DL560C
WDM 4
Indian locomotive class WDM-4
The Indian locomotive class WDM-4 is a class of
diesel-electric locomotive that was developed in 1962 by
General Motors for Indian Railways. The model name stands
for broad gauge, Diesel, Mixed traffic engine, 4th
generation. They entered service in 1962. - Wikipedia
- Builder: Electro-Motive Diesel
- Fuel type: Diesel fuel
- Locale: Northern Railway zone
- Model: EMD G16
- Preserved: 2 (#18001, #18086)
- Total produced: 72
- Train brake: Vacuum brake
WDM 3F
Manufactured by DLW, the 3,600 hp (2,700 kW) HAHS bogies have
conventional DBR and air brakes.
WDM 6
Two were made, and exported to Sri Lanka. Rated at 1,350 hp
(1,010 kW), their maximum speed was 75 km/h (47 mph) and they
had 19,200 kgf of tractive effort and Bo-Bo bogies.
WDM 7
Indian locomotive class WDM-7
The class WDM-7 is a diesel-electric locomotive of Indian
Railways. It has been manufactured by Diesel Locomotive
Works, Varanasi. The model name stands for broad gauge,
diesel, mixed-traffic engine. The WDM-7 are found
exclusively at Chennai Central and nearby area. -
Wikipedia
- Builder: Diesel Locomotive Works
- Fuel type: Diesel fuel
- Locale: Southern Railway Headquarters
- Model: ALCO DL560C
- Total produced: 15
- Transmission: Diesel-electric transmission
WDP Series
These Locomotives are specially made for both Passenger
trains. So, they have P on their last. P means
Passenger.
WDP 1
Indian locomotive class WDP-1
The WDP-1 class is a diesel-electric locomotive that is
used by Indian Railways. It is a lower-powered version
of the WDM-2. These locos have a 2300 hp power pack. -
Wikipedia
- Aspiration: Turbocharger
- Builder: Diesel Locomotive Works
- Fuel type: Diesel fuel
- Model: ALCO DL560C
- Total produced: 69 (WDP-1)
- Transmission: Diesel-electric transmission
- Build date: 1995-99
WDP 2/3A
Indian locomotive class WDP-3A
The class WDP-3A is a diesel-electric locomotive of
Indian Railways. Since 1998, it has been manufactured
in India by the Diesel Locomotive Works, Varanasi. The
model name stands for broad gauge, Diesel, Passenger
traffic engine. The WDP-3A is an IR attempt to create
a High-speed diesel locomotive. - Wikipedia
- Fuel type: Diesel fuel
- Total produced: 44
- Transmission: Diesel-electric transmission
- Serial number: WDP-2-1 to WDP-2-44
- Rebuilder: Diesel-Loco Modernisation Works, Patiala
- Model: ALCO DL560C variant
- Builders: Diesel Locomotive Works, Diesel Loco Modernization Works
WDP 4(EMD GT46PAC)
EMD GT46PAC
The EMD GT46PAC or WDP4 is a passenger-hauling
diesel-electric locomotive with AC electric
transmission designed by General Motors
Electro-Motive Division and built by both GM-EMD and
under license by Diesel Locomotive Works of
Varanasi, India for Indian Railways as the classes
WDP4, WDP4B, and WDP4D.- Wikipedia
- Model: GT46PAC
- Aspiration: Turbocharger
- Fuel type: Diesel fuel
- Locale: India
- Operator: Indian Railways
- Total produced: 10
- Train brake: Railway air brake
WDP 4B
Improved WDP-4 with 4,500 hp (3,400 kW),
six traction motors (like the WDG-4), a wider cabin
to aid visibility, and minor exterior design
changes. Production of the single-cab locomotives
has ended.
WDP 4D
A WDP-4 with twin cabs, the 4,500 hp
(3,400 kW) locomotive with an LCD instrument
display, and a driver toilet has entered serial
production and regular service.
WDS Series -
These Locomotives are specially made for shunting
trains. So, they have S on their last. S means
shunting
WDS 1
India's first widely deployed diesel locomotive
(imported in 1944–45), the 386 hp
(288 kW) engine is out of service.
WDS 3
The 618 hp (461 kW) locomotives
of this class were rebuilt and reclassified as
WDS-4C from 1976 to 1978. With 17,100 kgf of
tractive effort, they were built in 1961.
WDS 4, -4A, -4B and -4D
Indian locomotive class WDS-4
The WDS-4 is a class of diesel-hydraulic
locomotive used by Indian Railways for
shunting and departmental operations. The
model name stands for broad gauge, Diesel,
Shunting engine. The WDS-4 was once used all
over India but most have now been scrapped
or condemned from active service.-
Wikipedia
Builder: Chittaranjan Locomotive
Works
Fuel type: Diesel fuel
WDS 4C
Rebuilt by CLW and reclassified from
WDS-3, the 700 hp (520 kW)
locomotive has 18,000 kgf of tractive effort
and C bogies. Out of service, its maximum
speed is 65 km/h (40 mph).
WDS 5
Some are used for industrial shunting, and a
few are used on Indian Railways. It is rated
at 1,065 hp (794 kW).
WDS 6
Indian locomotive class WDS-6
The class WDS-6 is a diesel-electric
locomotive used by Indian Railways for
shunting and doing departmental works. The
model name stands for broad gauge, Diesel,
Shunting engine. The WDS-6 is used all
over India.- Wikipedia
Aspiration: Turbocharger
Fuel type: Diesel fuel
Transmission: Diesel-electric
transmission
Total produced: WDS-6: 300; WDS-6AD:
111
Build date: 1975+
Builders: Diesel Locomotive Works,
Central Railway Loco Workshop, Parel
WDS-6R, -6SL and -6AD
Variants of the WDS-6, the -6SL are
exported to Sri Lanka. The -6AD has a
maximum speed of 50 km/h (31 mph)
and a six-cylinder engine.
WDS 8
Five 800 hp (600 kW) locos, with
a maximum speed of 35 km/h
(22 mph) and 22,000 kgf of tractive
effort, were made by CLW and transferred to
steelworks.
All the images used here not belong to
us
Source - Wikipedia
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