What are gears?

  • (noun): Wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed.
    Synonyms: gearing, geartrain, power train, train


A gear is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque. Two or more gears working in tandem are called a transmission and can produce a mechanical advantage through a gear ratio and thus may be considered a simple machine. Geared devices can change the speed, torque, and direction of a power source. The most common situation is for a gear to mesh with another gear, however a gear can also mesh with a non-rotating toothed part, called a rack, thereby producing translation instead of rotation.

Read more about Gears.

Some articles on gears:

Steampowered - Types of Motor Units - Reciprocating Piston
... and closing steam ports communicating with the cylinder end(s) and are driven by valve gear, of which there are many types ... The simplest valve gears give events of fixed length during the engine cycle and often make the engine rotate in only one direction ... to overcome this problem by means of various patent valve gears with a separate, variable cutoff expansion valve riding on the back of the main slide valve the latter usually had fixed ...
Gears - Gear Model in Modern Physics
... Modern physics adopted the gear model in different ways ... Maxwell used a gear wheel and called it an "idle wheel" to explain the electrical current as a rotation of particles in opposite directions to that of ... More recently, quantum physics uses "quantum gears" in their model ...
State Colleges And Universities Athletic Association - SUC Olympic III - Central Luzon
... Institution Nickname Status Founded Color Location Bulacan State University BulSU Gold Gears State 1904 Cardinal Red Gold Malolos, Bulacan Ramon Magsaysay Technological ...
List Of Gears Of War Characters - Coalition of Ordered Governments (COG) - Other Gears - Victor Hoffman
... communicated with Delta squad throughout Gears of War ... Early in Gears of War, Hoffman is reluctant to reinstate Fenix into the military ... He receives a slightly larger role in Gears of War 2's plot, and even assists Delta squad during the game's final act ...
Composite Gear Housing - Design
... The main problem of using fiber reinforced composite plastic for gear housing is low thermal conductivity and low hardness of the composite material ... Because of the low hardness, the composite gear housing necessarily has numerous metal inserts laminated into the composite exterior or installed with adhesive in the prefabricated composite housing ... inserts provide support for bearings, shafts, gears and other metal components of the gearbox ...

Famous quotes containing the word gears:

    Your work is to keep cranking the flywheel that turns the gears that spin the belt in the engine of belief that keeps you and your desk in midair.
    Annie Dillard (b. 1945)