Wheel reprofiling accounts for a considerable amount of the maintenance costs for freight wagons in Sweden, and the causes can be divided mainly in three groups: wheel flats, shelling and uniform wear. In this paper the development of uniform wheel wear in a two-axle freight vehicle is studied. This wagon with Unitruck running gear had a major modification in the suspension elements in 2005 which highly reduced flange wear. The method developed at KTH for uniform wear calculation is applied on both old and new simulation models. The influence of freight wagon specific characteristics on the wear development is also analysed, i.e. high axle load and friction damping elements.
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