What is a bogie wheel on a tank?

A bogie is a wheel or system of wheels and springs that is used to support a track or a belt. Found commonly in tracked vehicles such as crawler-type tractors and excavators as well as military tanks, the bogie wheels support the tracks by allowing the tracks to ride on them.

Are tank treads rubber?

The more common classical type is a solid chain track made of steel plates (with or without rubber pads), also called caterpillar tread or tank tread, which is preferred for robust and heavy construction vehicles and military vehicles. The idea of continuous tracks can be traced back as far as the 1830s, however.

What is a bogie on a railway vehicle?

Rail vehicles have very different bogies compared to road vehicles. While railway vehicles initially ran on two or three fixed axles, the bogie, originally called the “swivelling bolster”, was soon generally accepted. It is a short two or three axle unit which is mounted under the vehicle frame so that it is free to move to a certain extent.

What is the difference between a wheeled and tracked battle tank?

A modern main battle tank comes at 60–70 tons, has a whole lot more survivability and packs significantly more punch. Going back to our previous point, it would mean that a wheeled vehicle would have 4.4 tons per wheel, while the tracked main battle tank would have 5 tons per road wheel. Does it worth the tradeoff?

What is the difference between a frame bogie and external bogie?

Bogies are basically differentiated depending on the design of their frame. With external frame bogies, the frames encompass the wheelsets. From practical considerations and reasons of space, external frames are popular on narrow gauge vehicles, since otherwise the space between the frame sides would be very narrow.

What kind of suspension do you need for a bogie?

Suspension to absorb shocks between the bogie frame and the rail vehicle body. Common types are coil springs, leaf springs and rubber airbags. At least one wheelset, composed of an axle with bearings and a wheel at each end. The bolster, the main crossmember, connected to the bogie frame through the secondary suspension.