gearunit
nounUK /ˈɡɪəˌjuːnɪt/
US /ˈɡɪrˌjuːnɪt/
A gear unit is a box of wheels and parts that helps a machine move and work.
The robot's gear unit makes its arms move slowly and strongly.
OTHER MEANINGS
2. A set of gears built together as one part inside a machine.
The mechanic replaced the broken gear unit in the windmill.
3. A device that changes speed or turning force in a machine.
This gear unit slows the motor down so the conveyor belt moves gently.
4. A packaged assembly of gears used in industrial equipment.
The factory ordered a new gear unit for the mixing machine.