description EMD Class 66 Overview
EMD Class 66 is the common name for the JT42CWR family of Co-Co diesel-electric locomotives developed by Electro-Motive Diesel for European heavy-freight service. Production began in 1998, with examples used by freight operators in the United Kingdom and continental Europe; related versions have also operated in other countries. Its six powered axles and EMD two-stroke diesel engine make it a line-haul locomotive for non-electrified freight routes.
help EMD Class 66 FAQ
What is the technical designation of an EMD Class 66?
The EMD Class 66 is commonly identified as the JT42CWR. It is a Co-Co diesel-electric locomotive developed by Electro-Motive Diesel for European heavy-freight service.
When did EMD Class 66 production begin?
Production began in 1998. The design was developed for the British and continental European freight markets and later became widely used by freight operators.
What does Co-Co mean on an EMD Class 66?
Co-Co describes a locomotive with two three-axle bogies, with every axle powered. That six-axle arrangement gives the diesel-electric Class 66 strong traction for heavy freight trains.
Which rail operators use EMD Class 66 locomotives?
Class 66 locomotives have been used by United Kingdom freight operators including Freightliner and GB Railfreight. Continental European examples include locomotives operated through DB Schenker's Euro Cargo Rail subsidiary.
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