With the many industrial gearboxes on the market, it’s vital that you match the proper type of gearbox with the drive, motor, and load. When a machine needs a servosystem (drive and engine), the gearbox type is critical for accurate and repeatable movement. Planetary gearboxes suit you perfectly for servo applications.
High-precision helical planetary gearboxes are a great choice for applications that require precision and reliability. Planetary gearboxes have very low backlash ratings (precision gearbox typically ranging from someone to nine arc-min), so when sized correctly offer a service existence of over 20,000 hours with virtually no maintenance. Helical planetary gears also provide very silent and more efficient operation in comparison with competitive products.
Precision gearboxes are carefully machined to high tolerances – believe clockmaker, not blacksmith. They provide power densities that translates to small package size and efficiencies of 90% and greater.
Servomotors often drive loads directly without the need for a gearbox, however in many applications it’s beneficial to make use of a gearbox between your motor and load.
One 
main reason to employ a gearbox is torque multiplication. It lets designers make use of smaller sized servosystems that consumes less energy. Instead of buying relatively large servodrives and motors, developer can use smaller elements, saving space and money.
Output torque raises in direct proportion to the apparatus ratio, and top swiftness of the output shaft decreases. If an application can withstand the reduced speed, a relatively little servosystem can supply high torque.