A gear drive drive requires two gears for procedure. Both gears are spur cut, and the drive equipment receives drive from the power output. The drive gear then transfers capacity to the driven gear.
Different Drive Systems
All drive systems need a drive gear. The drive equipment is the main transfer from the energy source to the driven equipment. A belt from the drive gear to the driven gear is a “belt powered” system. Another option is the “chain driven” program. The “chain driven” system uses a chain from the drive gear to the driven gear. The “gear drive” system is direct gear-drive. The drive equipment is directly meshed with the powered gear.
Common applications
Gear drives are used in transmissions, back ends and transfer cases; at times the drive gear will be smaller than the driven equipment. Different gear ratios enable the transmission to change to lower or more rpm speeds.
Automotive gear drive
Gear drives are used on automotive engines. A “gear drive” usually identifies the timing drive; it replaces the common timing-chain 
with spur-cut gears. A gear drive is well known for the “whining sound” it emits. The teeth of the gears mesh with each other as the gears turn with the rotation of the engine. This helps to keep the engine in time.