A wheelset is a pair of railroad vehicle wheels mounted rigidly on an axle. Wheelsets are often mounted in a bogie – a pivoted frame assembly holding at least two wheelsets – at each end of the vehicl
Bogie of a rubber-tyred electric multiple unit of the Paris Métro
Denney axle
Railroad car wheels are rigidly mounted on an axle to rotate in unison.
Swiss Federal Railways wheelsets with fitted journals
A train wheel or rail wheel is a type of wheel specially designed for use on railway tracks. The wheel acts as a rolling component, typically press fitted on to an axle and mounted directly on a railw
Wheelset (rail transport)
…A wheelset is a pair of railroad vehicle wheels mounted rigidly on an axle. Wheelsets are often mounted in a bogie ("truck" in North America) – a pivoted frame assembly holding at least two wheelsets…
The small rail wheels fitted to road–rail vehicles allow them to be stowed away when the vehicle is in road-going mode.