gearbox

Torque conversion housing

A gearbox is an enclosed system of gears that transmits power from an engine to wheels or other moving parts, allowing changes in speed and torque.

In vehicles, shifting gears engages different gear ratios within the gearbox.

The term applies broadly to any cased gear assembly in machinery: The tractor's gearbox needs rebuilding.

mechanics

cogs

Projections on a wheel

synchromesh · planetary · differential · spur · helical · bevel · worm · idler · pinion · mesh

shifting

clutch

Mechanism linking engine to gearbox

H-pattern · sequential · upshift · downshift · neutral · reverse · engage · disengage · linkage · gate

transmission

drivetrain

Vehicle power transmission system

differential · torque converter · bellhousing · final drive · coupling · CVT · automatic · manual · dual-clutch · overdrive

types

manual

Written instructions for use

sequential · planetary · transaxle · transfer case · reduction · single-speed · synchronized · unsynchronized · crash

torque

power

Energy transfer rate

leverage · twist · torsion · force · strain · stress · foot-pounds · multiplication · reduction · output

Categories
Opposites
mechanical complexity

gearboxdirect drive

Transmission without intermediate gears

solid axle · belt drive · single-speed · fixed gear

power transmission function

gearboxengine

Machine producing motion

motor · wheels · driveshaft · axle · power source

noise/operation characteristics

gearboxquiet

Lacking in sound

silent · smooth · noiseless · electric motor

Family

gearboxes

Familiarity
Top 50,000
Profile
Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G