Bearings for railway applications

Bearings are used for a wide variety of purposes in all kind of railway vehicles. They are key components in axleboxes and drive systems such as traction motors and suspension units. Other applications include gearboxes, shock absorbers, tilting mechanisms, doors etc. The latest development involves sensors to detect speed, direction of rotation, bearing condition and bogie stability. These are now becoming standard equipment for several modern train designs. Some product examples are:
  • compact tapered roller bearing units with metric or inch dimensions (fig 1),
  • axleboxes designed for overall economy, reliability and comfort (fig 2),
  • axlebridges for low floor tramcars supporting the two independent wheels fitted with tapered bearing units (fig 3).
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