A change-speed gear in which the gears are changed by sliding endwise.

plural of gear change

A high-viscosity lubricant intended for use on transmissions, transfer cases, and differentials in automobiles etc.

plural of gear case

An enclosure for the bicycle chain and sprocket assemblages commonly employed by utility bicycles. It protects the chain from mud and dirt and may also contain an oil bath to keep the chain lubricated.

Alternative form of gear to.

plural of negative gearing

Synonym of jacking gear

A device, placed on the shaft of an engine, or the rotor of a turbine, allowing it to be slowly turned manually

The central gear wheel of an epicyclic gear train; the central gear in planetary gear box, which spins the planet gears