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DrivelineElectric Multiple Units (EMU)Helical Gear, Axle Drive

Helical Gear, Axle Drive

Helical Gear, Axle Drive
Copyright: Siemens AG

Optimal transmission for local passenger trains

The S 20 A-N transmission, specially developed for use in the Desiro Mainline trains, was designed in accordance with highly ambitious requirements: Emissions and driving noise had to be low, flexibility however high. In parallel, the high demands put forward by ZF in terms of component profitability had to be fulfilled as well.


  • Low emissions and driving noise
  • High flexibility
  • Cost and time savings
  • Modern rail drives
  • Top speed of up to 160 km/h

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