gear - grin
- gear
- gear base
- gear base assembly
- gear blank
- gear body
- gear case
- gear casing
- gear centre
- gear chamber
- gear change
- gear change arrangement
- gear change box
- gear change rod
- gear changing
- gear clearance
- gear contact pattern
- gear coupling
- gear coupling backflash
- gear cover
- gear cutting
- gear drive
- gear flank grinder
- gear guard
- gear hobbing machine
- gear housing
- gear hub
- gear lock
- gear losses
- gear manufacturing
- gear mesh
- gear motor
- gear oil
- gear pair
- gear pair with intersecting axes
- gear pair with non-parallel non-intersecting axes
- gear pair with parallel axes
- gear pinion
- gear pitch
- gear pump
- gear rack
