A gear drive drive requires two gears for procedure. Both gears are spur cut, and the drive equipment receives drive from the energy output. 
The drive equipment then transfers power to the driven gear.
Different Drive Systems
All drive systems require a drive gear. The drive equipment is the primary transfer from the power source to the powered gear. A belt from the drive equipment to the driven gear is a “belt powered” system. Another option is the “chain driven” program. The “chain driven” program runs on the chain from the drive gear to the driven equipment. The “gear drive” system is immediate gear-drive. The drive gear is directly meshed with the driven gear.
Common applications
Gear drives are used in transmissions, back ends and transfer situations; at times the drive gear will be smaller than the driven equipment. Different gear ratios allow the transmission to shift to lower or higher rpm speeds.
Automotive gear drive
Gear drives are applied to automotive engines. A “equipment drive” usually refers to 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. One’s teeth of the gears mesh jointly as the gears convert with the rotation of the engine. This will keep the engine with time.