A
wheel is a circular component that is intended to rotate on an axle
bearing. The wheel is one of the main 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 movement or transportation while supporting a load, or performing labor in machines. Wheels are also used for other purposes, such as a
ship's wheel,
steering wheel,
potter's wheel and
flywheel.