Projections on the circumference or face of a wheel which engage with complementary projections on another wheel to transmit force and motion.


Related Terms

HOBBING MACHINE

A machine for cutting gear teeth in gear blanks or for cutting worm, spur, or helical gears. Also known as hobber.

FATIGUE CHUNKS

Thick three-dimensional particles exceeding 50 microns indicating severe wear of gear teeth.

CYCLOIDAL GEAR TEETH

Gear teeth whose profile is formed by the trace of a point on a circle rolling without slippage on the outside or inside of the pitch circle of a gear; now used only for clockwork and timer gears.

DENTAL COUPLING

A type of flexible coupling used to join a steam turbine to a reduction-gear pinion shaft; consists of a short piece of shaft with gear teeth at each end, and mates with internal gears in a flange at the ends of the two shafts to be joined.

GEAR SHAPER

A machine that makes gear teeth by means of a reciprocating cutter that rotates slowly with the work.

GEAR WHEEL

A wheel that meshes gear teeth with another part.

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