Talgo wheel lathe
filed on: 20.01.2011 (20th Jan 2011)
A second wheel lathe has been installed in Oerlikon depot. The new equipment from Talgo cost 2.2 million Franks plus 900,000 for the installation. The new lathe can turn four wheels at the same time, finishing all 12 wheels of a Cobra in four hours, taking about 2mm off the wheel diameter. A Cobra requires this treatment about every 10 weeks or 25,000km. The goal is to do this every 30,000km, replacing he wheel typre every 180,000km. At present a Cobra wheel tyre lasts 160,000km. That of a classical tram lasts 300,000km. Different alloys are currently being tested to improve the life of wheelsets. The Cobra type has been criticised for its occasionally noisy ride, caused by the polygon formation of its wheels.
This news item is from the 2011 newslog.
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