train wheel how look like
The wheels on each side of a train car are connected with a metal rod called an axle.
This axle keeps the two train wheels moving together, both turning at the same speed when the train is moving .
This is where the wheels' geometry comes in.
To help the wheels stay on the track their shape is usually slightly conical
The instantaneous temperature between the wheel and rail have been measured up to 4,000degF. That's enough to melt the metal and definitely enough to alter the characteristics and coloration.
Do you know
Sweeping curves. Lots of miles.
How long does a train wheel last
While many of us change our car tires every 50,000 miles or so, Metro rail wheels can travel as far as 700,000 miles before they need to be replaced.
