Valid to UK only - excludes oversized items
Train wheels are probably one of the most important components of a railway locomotive, coach or wagon. Their shape and design are key to providing safe, reliable, stable and speedy operations and a typical train wheel has many features and design aspects to help it achieve this.
The main features of a train's wheel are the flange, tread, rim, web/spokes and the hub.
Train wheels differ greatly depending on their type and intended purpose, but all will have a flange to keep it on the rails (should it not remain naturally centred), tread (which is the part of the rim that sits on the track and is specially shaped to keep the train running true on the rails), a hub in the middle to mount it to an axel and a centre mass that connects the outer rim to the central hub, this could be an integral web or spokes depending on the wheel's type, some modern trains even have their brake discs mounted on the outer surface of the wheel.
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