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Worn tires or tires with flats are reprofiled on a wheel lathe if there is sufficient thickness of material remaining. A damaged railway tire was the cause of the Eschede train disaster, when a tire failed on a high-speed Intercity Express train, causing it to derail and killing 101 passengers.
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 onto an axle and mounted directly on a railway carriage or locomotive , or indirectly on a bogie (in the UK), also called a truck (in North America).
The wheels used in Saarbrücken were constructed in the manner of wooden Mansell wheels, with the wheel tire being placed on the paper disc and the hub in it by means of strong hydraulic pressure, while the tires of the American paper wheels were provided with an inner attachment against which the paper disc was pressed and to which it was ...
The point where two tracks join and the vehicle can take one of two directions is called a railway switch. This works on the same principle, except that the inner rail is almost continuous and the outer rail has a gap for the flange to pass through. With a train this problem is solved by using a wide tire. Train rails usually cross at a shallow ...
A severe flat spot on a rail wheel. A flat spot, or wheel flat, also called spalling or shelling, is a fault in railroad wheel shape. A flat spot occurs when a rail vehicle's wheelset stops rotating while the train is still in motion, causing part of the wheel to ablate against the hard steel of the rails.
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An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.