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Axle

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Wheel and Axle - Simple Machines | Science for Kids | Educational Videos by Mocomi

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Wheel and Axle - More Grades 3-5 Science on the Learning Videos Channel

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How does a wheel and axle work?

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What Happens If You TWIST a Lego Axle HARD?

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Tiger Tool 11001 Axle Shaft Puller - Best Way To Pull Axles!

An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle is supported. In the latter case, a bearing or bushing sits inside a central hole in the wheel to allow the wheel or gear to rotate around the axle. Sometimes, especially on bicycles, the latter type axle is referred to as a spindle.
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    • Terminology 

    • Vehicle axles 

    • Structural features and design 

    • Drive axle 

    • Lift axle