EMD Class 66

"CD66" redirects here. For the CD66 antigen, see Carcinoembryonic antigen.
EMD Class 66

HGK DE 64 at Godorf Hafen open day.
Type and origin
Power type Diesel-electric
Builder Electro-Motive Diesel
Build date 1998 to date
Total produced 651+(7)[1]
UIC class Co'Co'
Gauge 1,435 mm (4 ft 8 12 in) standard gauge
Bogies HTCR-E
Length 21.35 m (70 ft 1 in)
Width 2.64 m (8 ft 8 in)
Height 3.9 m (12 ft 10 in)
Loco weight 126.9 t (124.9 long tons; 139.9 short tons)
Fuel type Diesel
Fuel capacity 6,400 L (1,400 imp gal; 1,700 US gal)
Prime mover EMD 12N-710G3B-T2, 2,420 kW
Engine type V12 Two-stroke diesel
Alternator Main: General Motors AR8PHEH
Aux.: General Motors CA6B
Traction motors General Motors D43TR Axle Hung (6x)
Cylinders 12
Transmission Electric
Loco brake Air
Performance figures
Maximum speed 120 km/h (75 mph)
Except Freightliner 66/6 105 km/h (65 mph)
Power output 2,420 kW (3,250 hp) (total)
2,268 kW (3,041 hp) (traction)
Tractive effort Starting:
409 kN (92,000 lbf)
except Freightliner 66/6: 467 kN (105,000 lbf)
260 kN (58,000 lbf) @ 25.6 km/h (15.9 mph)
except for Freightliner 66/6: 296 kN (67,000 lbf) @ 22.5 km/h (14.0 mph)
Nicknames 'Sheds', 'Ying-yings' (UK)
'Klaas 66' (NL)[2]
Locale Western Europe, Egypt and Gabon

The Electro-Motive Diesel (EMD) Class 66 (or JT42CWR) are Co-Co diesel locomotives built by EMD for the European heavy freight market. Designed for use in Great Britain as the Class 66, a development of the Class 59, they have been adapted and certified for use in other European countries.[3] Outside Europe, 40 locomotives have been sold to Egyptian Railways for passenger operation.[4]

A number of locomotives built for Euro Cargo Rail in France with roof-mounted air conditioning are classed Class 77. In Germany ECR units operated for DB Schenker were numbered as class 247, re-classified as class 266 by the Eisenbahn-Bundesamt to match other Class 66 locomotives operating in Germany.[5]


United Kingdom

Main article: British Rail Class 66

The class was designed by General Motors-Electro Motive Division[6] for use in the UK, and 250 were sold to English Welsh & Scottish, with orders from Direct Rail Services, Fastline, Freightliner and GB Railfreight.

Mainland Europe

With the locomotives proving successful in the UK, interest came from railway operators in Europe. General Motors locomotives in mainland Europe had historically been produced under license by local manufacturers. The high haulage capacity and reliability of the Class 59 (JT26-CW-SS) had led to its use by the German company Häfen und Güterverkehr Köln (HGK). The first mainland Europe order also came from HGK, for two locomotives, followed by TGOJ Trafik (Trafikaktiebolaget Grängesberg-Oxelösunds Järnvägar) in Sweden. Subsequently many European railway operators bought locomotives.[7]

Class 77

With a high number of orders, EMD modified the locomotive for European ECR operations, including:[8]

Designated JT42CWRM-100 by EMD and registered in France as Class 77,[8] over 100 locomotives have been purchased including 60 by DB Schenker subsidiary Euro Cargo Rail.

Class 66EU

In 2008 EMD announced plans to develop a new variant 'Class 66EU' designed for continental European operations, built within the UIC 505-1 loading gauge as opposed to the restrictive UK loading gauge. A range of European safety systems would be supported including ERTMS, and locomotives would be fitted with a dynamic brake and previous issues with driver comfort were to be addressed.[9] The project was confirmed to be cancelled in 2011.[10]


The locomotive uses standard EMD components - an EMD 710 prime mover, D43 traction motors, radial[11] (self-steering) bogies of patented design, which reduce wheel surface and flange wear[12] and is said to improve adhesion[13] and reduce track load.[14]

The class has undergone updates; other than the lower-geared class 66/6 produced for Freightliner, most of the updates have been in relation to conforming to specifications for exhaust particulate emissions.

CD66 of CargoNet
The air conditioning unit is visible above the cab.

Despite being popular with rail operators, especially due to its high reliability, the class has not been universally successful: one recurring problem has been driver comfort. In particular, noise levels (including noise from the cab horn), vibration, and excessive cab-temperatures in hot weather have brought serious complaints. The cab is not isolated from the main frame, causing engine noise to be the dominant background noise;[15] notwithstanding the implications for safety (audibility of warning signals etc.), and the potential for hearing damage in the long term, the conditions drivers face led to threats of industrial action in the UK in 2007,[16] and an agreement for increased pay for drivers using this type of locomotive[17] (in Norway). By modifying using noise absorbing materials EMD succeeded in meeting TSI Noise Certification standards in 2008.[18] Tests on retrofitted cooling systems and improved seating have been carried out on some UK locomotives.[19][20]

ETCS Equipment

Between 2006 and 2010, 12 locomotives belonging to Mitsui Capital Rail Europe (MRCE), operating in the Netherlands and Germany, were equipped with ETCS, principally to allow them to work on the equipped Betuweroute, comprising the ETCS Level 1 "Havenspoorlijn" in the Rotterdam harbour area and the ETCS Level 2 "A15" route linking Rotterdam to the German border.[note 1]. The MRCE locomotives were sold to Beacon Rail in 2015. Commencing in 2015, 15 locomotives owned by Ascendos Rail Leasing and 10 locomotives owned and operated by Crossrail Benelux were equipped with ETCS.

Idle reduction

As a fuel-saving and wear-reduction measure operator DB Schenker Rail UK is to fit ninety of its fleet with automatic engine stop start technology by the end of 2015. The modification is provided by ZTR Control Systems of London, Ontario and is expected to reduce engine running hours by about one-third.[21]


Freightliner PL EMD JT42CWRM #66001 at the station in Ruhland Germany (May 2008)


Certification (homologation) is needed for each country of operation. The locos were initially given a temporary certificate for use in France,[22] and full certification came in 2009[23] (they had previously operated in France on some routes), Romanian certification came in 2007[24] The class is certified for operation in Germany, the Netherlands, Luxembourg, Belgium, Sweden, Norway, Poland and Denmark. As of 1 January 2009, certification for use in the Czech Republic and Slovakia was pending.

Middle East

They are operated in Egypt by the Egyptian National Railways.

List of operators

Owner Operator Countries Designation Total Comments
Angel Trains (250)
Beacon Rail (15)
Halifax Assets finance Ltd. (33)
Eversholt Rail Group (85)
Porterbrook (60)
Lloyds TSB (4)[25]
Colas Rail
DB Schenker
Direct Rail Services
GB Railfreight
Great Britain British Rail Class 66 450+
Main article: British Rail Class 66

60 EWS locomotives lent from EWS stock to EWSi subsidiary Euro Cargo Rail.[26]
13 units exported to Poland for Freightliner Poland.[25]
Angel Trains Euro Cargo Rail (ECR)[26] France Class 66
Class 77
120 60 loaned from parent company EWSi
60 further locomotives during 2009 designated Class 77
Freightliner PL (FPL)[27] Poland Class 66[28] 7[29] Part of Freightliner Group Ltd.
CB Rail[30]
formerly Porterbrook
Rail4Chem Benelux (R4CB) Benelux (Belgium, Netherlands & Luxembourg) 26
Heavy Haul Power International (HHPI) Germany
Dillen et Le Jeune Cargo Railway (DLC) Belgium
Häfen und Güterverkehr Köln (HGK) Germany Class 266
ERS Railways (ERSR) Netherlands
Railion Nederland (RN) Netherlands
Deutsche Leasing[30] Rail4Chem Benelux (R4CB) Benelux (Belgium, Netherlands & Luxembourg) 1
Egyptian National Railways (ENR) Egypt[4][31] 2120[32] 40[31] First non-European customer, for passenger use.
GM/Opel leasing[30] Häfen und Güterverkehr Köln (HGK) Germany Class 266 2
GM/GMAC leasing[30] Heavy Haul Power International (HHPI) Germany 1
HSBC Rail[30] TGOJ Trafik (TGOJ)[33] Sweden T66 713[34] 1[34] Leased to Ikea rail AB, from 2012-07 to Rush Rail source
CFL Cargo DK[35] Denmark T66K 714 "Krudthornet" 1 Transferred to CFL Cargo DK in Padborg in 2010 (SE,DK ATC)
CargoNet (CN) Norway CD66[36] 6[37] Problems with driver cabin conditions (see above)
Named Di9 as per Di series in procurement documents,[38] in practice also called CD 66
To be replaced by Vossloh Euro 4000 on the Nordland Line
Häfen und Güterverkehr Köln (HGK) Germany Class 266 5
ERS Railways (ERSR) Netherlands 5
KBC lease group[30] Dillen et Le Jeune Cargo Railway (DLC) Belgium 4
MRCE[30] Dillen et Le Jeune Cargo Railway (DLC) Belgium ~5
ERS Railways (ERSR) Netherlands ~6
Häfen und Güterverkehr Köln (HGK) Germany Class 266 ~2
Afzet Container Transport System (ACTS) Netherlands 1
Dortmunder Eisenbahn (DE) Germany 1
Veolia Cargo / Connex (VC) Netherlands & France 1
Trainsport AG (TS) Belgium 1
Rail4Chem (R4C) Germany 1
NedTrain 1
Setrag Gabon 2 Units shipped July 2011.[39]

See also


  1. Bombardier "EBICab2000" ETCS. Includes ATB-EG specific transmission module (STM) for conventional Dutch lines and the PZB STM for Germany. A separate "Memor" unit is installed for Belgian operation.


  1. "Class 66 :: Electro-Motive Diesel JT42CWR". class66.railfan.nl. Rogier Immers. Retrieved 9 July 2011.
  2. Klass 66 : a play on the English word "class" and the Dutch boys' name "Klaas" and the word SantaKlaus (Dutch:'Sinterklaas'). The nickname came about because the first engine delivered to the Netherlands (HGK DE61) was painted red, a colour normally associated with Santa.
  3. JT42CWRM Fact Sheet
  4. 1 2 "Commissioning of Egyptian JT42CWRM begins". Railway Gazette International. 2009-05-20.
  5. "DB Schenker withdraws last Class 217 locomotives", Railway Herald (306): 37, 14 March 2012
  6. In 2005 General Motors sold its locomotive manufacturing division (EMD), the organisation is now named Electro Motive Diesel or EMD
  7. Class 66 (subsection 'History') railfan.nl
  8. 1 2 "Akiem adds Class 77s to lease fleet". Railway Gazette. 21 June 2011. Retrieved 29 April 2013.
  9. Andrew Roden (September 2008). "EMD plans new route for Class 66". findarticles.com. International Railway Journal.
  10. "EMD to produce passenger demonstrator loco", www.railwaygazettte.com, Railway Gazette International, 4 October 2011, Meanwhile, EMD confirms that it has dropped plans for the 66EU, which was to have been an updated version of its popular Class 66 freight locomotive specifically adapted for the Continental European market
  11. The individual bogies are articulated rather than having two bogies connected with a Beugniot lever or equivalent
  12. The effect of locomotive steering steering bogies on wheel and railwear, Swenson, C.A.; Scott, R.T. Railroad Conference, 1996. (via ieeexplore.ieee.org)
  13. Effect of self-steering locomotive trucks in improving adhesion oncurved tracks, Ahmadian, M.; Wei Huang, Railroad Conference, 2000. (via ieexplore.ieee.org)
  14. EMD Class 66 Product information sheet from EMD
  15. Rail Safety & Standards board: The implications of the physical agents directive (noise): summary
  16. "Boycott threat over 'dirty' locos". news.bbc.co.uk. BBC News. 30 April 2007.
  17. Agreement between the NLF and CargoNet (norwegian)
  18. Electro-Motive Diesel, Inc. (EMD) Updated Class 66 European Locomotive is First to Achieve TSI Noise Certification in Europe
  19. "Positive moves on Class 66 cabs". www.aslef.org. ASLEF. 21 March 2007.
  20. "Update on SQUASH". www.aslef.org.uk. ASLEF.
  21. "Class 66 locos to get engine stop-start technology". Railway Gazette. 2 October 2014. Retrieved 30 November 2014.
  22. Various modifications were required, including some additional to the fitment of the local train safety systems (see Details of Class 66 modifications made for working in France (esg-railconsultancy.co.uk)
  23. (EMD) Announces French Homologation Has Been Achieved For the Euro Cargo Rail Class 66 Locomotives
  24. Electro-Motive Diesels (EMD) certifies its Class 66 (JT42CWRM) locomotive in Romania
  25. 1 2 AbRail Rail Databases - Diesel Locomotives www.abrail.co.uk
  26. 1 2 ECR locomotives railfaneurope.net
  27. Freightliner PL Freightliner.co.uk
  29. Angel Trains presentation (via mtgsa.pl)
  30. 1 2 3 4 5 6 7 The Definitive Fleet List of Euro Class 66 locos - giving works numbers, running numbers, names, operators and international IDs. (up to November 2007) therailwaycentre.com
  31. 1 2 "Electro-Motive Diesel, Inc (EMD) Rolls Out The New JT42CWRM for Egyptian National Railways (ENR)". Electro-Motive Diesel.
  32. ENR locomotives and shunters railfaneurope.net
  33. TGOJ Trafik. (Locomotive listing on sub-page) (swedish)
  34. 1 2 TGOJ locomotives Railfaneurope.net
  35. CargoNet diesellokomotiv type CD66
  36. Norwegian rolling stock database page (with images)
  37. Årlig møte med ledelsen i CargoNet AS TILSYNSRAPPORT (annual audit report) CargoNet 2002
  38. "World rolling stock market September 2011", www.railwaygazette.com, Railway Gazette International, 26 September 2011


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