Gearbox is a necessity to a transmission drive

Actuators often lead loads directly without the need for a gearbox, but in many applications it is advantageous to use a gear between the motor and load.
One of the main reasons to use a transmission is a torque multiplication. Instead of relatively large actuators and motors to buy, designers can use smaller components, saving space and money. Thus designers can use smaller servo systems that consume less power.
Transmission can also treat inertia mismatches. For high performance servo systems – such dynamics with high or low responses overruns, for example – the ratio between the inertia of the reflected load inertia and motor should be as small as possible, ideally to ten to one. Reduced precision gear inertia reflected by the square of the reduction ratio. The output torque increases in direct proportion to the ratio, and decreases the speed of the output shaft. If an application can withstand the low speed, relatively small servo delivers high torque. For example, a 25 Uses: Transmission 1 reduces the inertia of the load reflected by a factor of 625, a significant improvement.
When directly interferes with such other mechanical component of the engine mounting, a rectangular box may solve the problem. In some cases, transmission solves simple issues about mechanical fit.
Compared to most other transmissions, provides a precision gear better precision and reproducibility. Furthermore, can the high efficiency transmission is the maximum power from the servo characteristics often provide a necessity in servo applications.