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2. Caster - Wikipedia

   en.wikipedia.org/wiki/Caster

   However, the larger the diameter of a caster wheel, the higher the caster support arm must be. Either the base of a low-hanging object must be lifted higher above the wheels, or the casters must hang out to the sides straddling the low-hanging supported object. While rotating around the vertical shaft, swivel caster wheels sweep out a space.

3. Artillery wheel - Wikipedia

   en.wikipedia.org/wiki/Artillery_wheel

   For example, this type of wheel was used on the pictured Armstrong gun, used in Japan in 1868. A similar design was used for a gun carriage for the US Army's 3.2-inch gun in 1881, with a wheel diameter of 57 inches (1,448 mm), based on testing of an Archibald Wheel Company design. By 1917, the 14-spoke wheel evolved to have 16 spokes, 0.5 ...

4. Wheel - Wikipedia

   en.wikipedia.org/wiki/Wheel

   An early wheel made of a solid piece of wood. A wheel is a rotating component (typically circular in shape) that is intended to turn on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating ...

5. The Most Comfortable Swivel Chairs of 2024, Vetted by ... - AOL

   www.aol.com/most-comfortable-swivel-chairs-2024...

   The chair's hidden base features a steel ball-bearing mechanism for a smooth, 360-degree swivel and the standard 22-inch seat depth can be extended to an extra-deep 27 inches, if you choose the ...

6. Roller coaster wheel assembly - Wikipedia

   en.wikipedia.org/wiki/Roller_coaster_wheel_assembly

   They often consist of at least 3 wheels per assembly, but can contain more. The typical arrangement of the wheels are: Running wheels (also known as road wheels or tractor wheels): positioned on the top of the rail, bearing the weight of the train. Side friction wheels: positioned on a horizontal plane, either inside or outside of the rails ...

7. Caster board - Wikipedia

   en.wikipedia.org/wiki/Caster_board

   A caster board has two narrow platforms known as "decks" that are joined by a torsion bar, which consists of a metal beam, usually coated by rubber, that houses a strong spring. One polyurethane wheel is mounted to each deck with a caster so that each wheel can steer independently, and each caster has a steering axis that is tilted about 30 ...