wheel and axle

Circular torque multiplier

A wheel and axle is one of the six classical simple machines: a wheel attached to a smaller cylindrical shaft so that they rotate together.

Turning the wheel provides mechanical advantage—a small force at the rim produces a larger force at the axle, or vice versa.

Doorknobs, steering wheels, and screwdrivers all employ the wheel and axle principle.

Related

windlass · mechanism · torque · block and tackle · physics · capstan · door knob · spoke · power transmission · tire · wagon · wooden · friction · rim · pivot · gear ratio · motion · hoist

Categories
Opposites
simple machine type

wheel and axleinclined plane

Tilted flat surface

dragging · lever · wedge · ramp · linear motion

mechanical complexity

wheel and axleengine

Machine producing motion

gearbox · drivetrain · hand tool

technological sophistication

wheel and axletravois

A-frame hauling device

sledge · dragging · portage · brute force · rollers

Family

wheel, wheels, axle, wheelbarrow, wheeled, wheeling, axles, ferris wheel, cartwheel

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G