Indian locomotive class WDS-6

2022-06-04T04:54:08Z

2409:4041:2D14:BCD6:0:0:2109:2814:

{{More footnotes|date=July 2019}}
{{Infobox locomotive
| name = WDS-6
| powertype = Diesel
| image = File:SSB WDS6.jpg
| alt =
| caption = Sakurbasti based WDS-6 at SSB DLS.
| builder = [[Banaras Locomotive Works|BLW]], Central Railway Loco Workshop, Parel
| ordernumber =
| serialnumber =
| buildmodel =
| builddate = 1975+
| totalproduction = '''WDS-6:''' 300<br />'''WDS-6AD:''' 111
| rebuilder = Parel Workshops
| rebuilddate =
| numberrebuilt =
| Britishclass = [[Co-Co locomotives|Co-Co]]
| uicclass = [[Co′Co′]]
| gauge = {{RailGauge|1676mm|lk=on}}
| trucks =
| bogies =ALCO Asymmetric cast frame trimount
| wheeldiameter = {{convert|1092|mm|ftin|0|abbr=on}}
| trailingdiameter =
| minimumcurve =
| wheelbase = {{convert|12.834|m|ftin|abbr=on|frac=8}}
| length = {{convert|16.088|m|ftin|abbr=on|frac=8}}
| width = {{convert|2.864|m|ftin|abbr=on|frac=8}}
| height = {{convert|4.185|m|ftin|abbr=on|frac=8}}
| axleload = {{convert|21000|kg|abbr=on}}
| weightondrivers =
| locoweight = {{convert|113000|kg|abbr=on}}
| fueltype = [[Diesel fuel|Diesel]]
| fuelcap = {{convert|3000|L|abbr=on}}
| lubecap = {{convert|530|L|abbr=on}}, {{convert|630|L|abbr=on}} DLW
| coolantcap =
| watercap = {{convert|22|L|abbr=on}}, {{convert|28|L|abbr=on}} DLW
| sandcap =
| consumption =
| watercons =
| primemover = [[ALCO 251|ALCO 251-D]]
| rpmrange = 400-1100
| enginetype = [[Straight-six engine|Inline, 6-cylinder]], [[Diesel engine|diesel]]
| aspiration = [[Turbo-supercharger|Turbo-supercharged]]
| displacement = 267 mm
| alternator =
| generator = DC
| tractionmotors = 6 DC
| cylindercount = 6
| cylindersize =
| transmission =[[Diesel-electric transmission]]
| multipleworking =2
| maxspeed = {{convert|71|km/h|0|abbr=on}}
| poweroutput = Max:{{convert|1400|HP|abbr=on}}<br>Site rated:{{convert|1300|HP|abbr=on}}
| tractiveeffort ={{convert|34.000|t|0|abbr=on}} maximum {{convert|16.050|t|0|abbr=on}} continuous
| factorofadhesion =
| trainheating =
| locobrakes = 28LV-1, Air brake for Locomotive using SA-9 brake handle
| locobrakeforce =
| trainbrakes = Originally [[Vacuum brake|vacuum]], or [[Railway air brake|air]], but some modified to [[Vacuum brake#Dual brakes|dual]]
| safety =
| operator =[[Indian Railways]]
| operatorclass =
| powerclass =
| numinclass =
| fleetnumbers =
| officialname =
| nicknames =
| axleloadclass =
| locale =All over Indian Railways, also leased and sold to some private- and public-sector industrial concerns
| deliverydate =
| firstrundate =
| lastrundate =
| retiredate =
| withdrawndate =
| preservedunits =
| restoredate =
| scrapdate =
| currentowner = Indian Railways, private industries
| disposition = Active
}}

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 [[5 ft 6 in gauge railway|broad gauge]] (W), '''D'''iesel (D), '''S'''hunting (S) engine, '''6'''th generation (6). As of April 2022, 375 units of this class are currently in use all over India.

==History==
This class was designed in 1975 to address the need for a powerful shunting locomotive with the ability to haul 20- to 24-coach rakes. The previous [[WDS-4]] class was found to be grossly underpowered for this kind of operation. A WDS-6 locomotive basically consists of a [[YDM-4]] powerpack (a 6-cylinder, 4-stroke, inline, turbo-supercharged [[American_Locomotive_Company|ALCo]] engine) mounted on a [[Indian locomotive class WDM-2|WDM-2]] body frame.
Beginning in 1975, these were initially manufactured solely by [[Banaras Locomotive Works|BLW, Varanasi]], but later, the Parel Workshop started building them using CKD (completely-knocked-down) kits provided by DLW.
WDS-6 units can be easily recognized by their low short hoods (with two cab windows above these) and flat-ended cabs on the long-hood end. Many of them were sold and transferred to private industrial concerns and public sector undertakings (PSUs) in huge numbers, but still display their IR road numbers.

== Locomotive sheds ==
{| class="wikitable"
|-
! Zone !! Name !! Shed Code !! Quantity
|-
| rowspan="2" |[[Central Railway zone|Central Railway]] || [[Pune Junction railway station|Pune]] || PA || 1
|-
| [[Kurla railway station|Kurla]] || CLA || 50
|-
| rowspan="5" |[[Eastern Railway zone|Eastern Railway]] || [[Howrah Junction railway station|Howrah]] || HWH || 18
|-
| Beliaghata || BGA || 27
|-
| [[Bardhaman railway station|Bardhaman]] || BWN|| 2
|-
| [[Andal railway station|Andal]] || UDL || 6
|-
| [[Jamalpur railway station|Jamalpur]] || JMP|| 2
|-
| rowspan="2" |[[East Central Railway zone|East Central Railway]] ||[[Patratu railway station|Patratu]] || PTRU || 5
|-
| [[Mughalsarai Junction railway station|Pt. DD Upadhyaya Junction]] || DDU || 13
|-
| [[East Coast Railway zone|East Coast Railway]] || [[Visakhapatnam railway station|Visakhapatnam]] || VSKP|| 10
|-
| rowspan="4" |[[Northern Railway zone|Northern Railway]] || [[Tughlakabad railway station|Tughlakabad]] || TKD || 11
|-
| [[Shakur Basti (Delhi Assembly constituency)|Shakurbasti]] || SSB ||21
|-
| [[Ludhiana Junction railway station|Ludhiana]] || LDH || 3
|-
| [[Lucknow Charbagh railway station|Lucknow]] || LKO || 4
|-
| [[North Central Railway zone|North Central Railway]] || [[Jhansi Junction railway station|Jhansi]] || JHS || 13
|-
| rowspan="2" |[[North Eastern Railway zone|North Eastern Railway]] || [[Gonda, Uttar Pradesh|Gonda]] || GD || 4
|-
| [[Izzatnagar railway station|Izzatnagar]] || IZN || 1
|-
| [[Northeast Frontier Railway zone|Northeast Frontier Railway]]|| [[Guwahati railway station|Guwahati]] || NGC || 12
|-
| rowspan="3" |[[Southern Railway zone|Southern Railway]] ||[[Erode Junction railway station|Erode]] || ED || 6
|-
| [[Golden Rock railway station|Golden Rock]] || GOC || 1
|-
| [[Tondiarpet railway station|Tondiarpet]] || TNP || 13
|-
| rowspan="3" |[[South Central Railway zone|South Central Railway]] || [[Kazipet railway station|Kazipet]] || KZJ ||1
|-
| [[Guntakal Junction railway station|Guntakal]] || GTL || 3
|-
| [[Vijayawada Junction railway station|Vijayawada]] || BZA|| 5
|-
| rowspan="3" |[[South Eastern Railway zone|South Eastern Railway]] || [[Kharagpur Junction railway station|Kharagpur]] || KGP || 17
|-
| [[Bondamunda railway station|Bondamunda]] || BNDM || 8
|-
| [[Bokaro Steel City railway station|Bokaro Steel City]] || BKSC || 10
|-
| [[South East Central Railway zone|South East Central Railway]] || [[Raipur Junction railway station|Raipur]] || R || 20
|-
|[[South Western Railway zone|South Western Railway]] || [[Krishnarajapuram railway station|Krishnarajapuram]] || KJM || 3
|-
| rowspan="4" |[[Western Railway zone|Western Railway]] || [[Ratlam Junction railway station|Ratlam]] || RTM || 5
|-
| [[Vatva Railway Station|Vatva]] || VTA || 19
|-
| [[Gandhidham Junction railway station|Gandhidham]] || GIMB || 4
|-
| Bandra Marshalling Yard || BAMY || 24
|-
| rowspan="2" |[[West Central Railway zone|West Central Railway]] || [[Itarsi Junction railway station|Itarsi]] || ET || 17
|-
| [[New Katni Junction railway station|New Katni Junction]] || KTE || 3
|-
| || Unknown || || 13
|-
| colspan="3" |'''Total Locomotives in Service as of April 2022'''<ref>{{cite web|url=https://www.irfca.org/apps/locos/list?list_type=named|title = IRFCA}}</ref> || 375
|}

== Technical specifications ==
<ref>{{Cite web|url=https://www.irfca.org/faq/faq-loco2d.html|title=[IRFCA] Indian Railways FAQ: Locomotives -- Specific classes : AC Electric|website=www.irfca.org}}</ref>
{| class="wikitable"
|Manufacturers
|DLW, Parel Workshop
|-
|Engine
|[[American_Locomotive_Company|Alco]] 251-D, [[Straight-six engine|Inline-6]], {{convert|1,400|hp|abbr=on|lk=on}} ({{convert|1,300|hp|abbr=on|disp=or}} site rating) with Alco turbocharged engine. 1,100 rpm max, 400 rpm idle; {{convert|228|x|267|mm|in|2|abbr=on}} bore x stroke; compression ratio 12.5:1.
|-
|Transmission
|Electric, DC-DC (DC Generator and DC Traction motor)
|-
|[[Traction motor]]s
|GE for original Alco and MLW models, BHEL for DLW
|-
|-
|[[Axle load]]
|{{convert|21|t|abbr=on}}
|-
|total weight
|{{convert|113|t|abbr=on}}
|-
|[[Bogie]]s
|Alco design cast frame trimount ([[Co-Co engine|Co-Co]]) bogies
|-
|Starting TE
|{{convert|34|t|abbr=on}}, at adhesion 27%
|-
|Length over [[buffer beam]]s
|{{convert|17,370|mm|ftin|abbr=on|frac=8}}
|-
|Distance between [[bogie]]s
|{{convert|10,516|mm|ftin|abbr=on|frac=8}}
|}

==Gallery==
<gallery>
File:WDS-6AD locomotive used in Indian Railways.jpg|WDS-6AD locomotive in outer area of Saharanpur Junction.
File:SSB WDS6.jpg|Sakurbasti based WD6 resting at rewari
</gallery>

==See also==

* [[History of rail transport in India]]
* [[Locomotives of India]]
* [[Rail transport in India]]
* [[YDM-4|Indian locomotive class YDM-4]]

===Bibliography===
{{refbegin}}
*{{Hughes-IndianLocos4}}
{{refend}}

==References==
{{reflist}}
*[https://rdso.indianrailways.gov.in/works/uploads/File/WDS6.PDF RDSO document for WDS-6]([https://web.archive.org/web/20190701124918/https://rdso.indianrailways.gov.in/works/uploads/File/WDS6.PDF archived copy])
*https://www.irfca.org/faq/faq-loco2d.html
*https://www.irfca.org/faq/faq-specs.html#WDS-6
*https://www.irfca.org/apps/locos/list
{{commons category|Indian locomotive class WDS6}}

{{Broad gauge locomotives of India |state=open}}
{{DEFAULTSORT:WDS-6}}

[[Category:Diesel-electric locomotives of India|S-6]]
[[Category:Co-Co locomotives]]
[[Category:Banaras Locomotive Works locomotives]]
[[Category:Railway locomotives introduced in 1975]]
[[Category:5 ft 6 in gauge locomotives]]

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Indian locomotive class WDS-6