cogwheel

Also known as gear wheel, gearwheel, cog wheel, gear, cog

thumb|upright=1.5|right|Two intermeshing spur gears rotating at different velocity due to differing gear ratio

AI overview

A cogwheel is a toothed wheel that meshes with other toothed wheels to transfer and control rotational motion and power in machines. By using cogwheels of different sizes, machines can change the speed and force of rotation to accomplish tasks ranging from simple tools to complex mechanical systems.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Image: Noun Gears 35041.svg

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Unicode character: ⚙️
Commons category: Gears

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~61 min read

Article

47 sections

Contents

History
Etymology
Materials
Manufacture
Comparison with other drive mechanisms
Ideal gear model
Relative axis position
Parallel
Crossed
Skew
Tooth orientation
Internal and external
Crown
Tooth cut direction
Straight
Helical
Double helical
Worm
Tooth profile
Artisanal
Cage
Mathematical
Parallel and crossed axes
Skew axes
Special gear trains
Rack and pinion
Epicyclic gear train
Sun and planet
Non-circular gears
Non-rigid gears
Harmonic gear
Magnetic gear
Nomenclature
General
Helical gear
Worm gear
Tooth contact
Tooth thickness
Pitch
Backlash
Gear failure mechanism
Gear model in modern physics
Gear mechanism in natural world
See also
References
Further reading
External links

thumb|upright=1.5|right|Two intermeshing spur gears rotating at different velocity due to differing gear ratio

A gear or gearwheel, also called a toothed wheel, is a rotating machine part typically used to transmit rotational motion or torque by means of a series of "teeth" that engage with compatible teeth of another gear or other part. The teeth can be integral saliences or cavities machined on the part, or separate pegs inserted into it. In the latter case, the gear is usually called a cogwheel. A cog may be one of those pegs or the whole gear. Two or more meshing gears are called a gear train.