With the many industrial gearboxes available today, it’s vital that you match the proper kind of gearbox with the drive, motor, and load. Whenever a machine needs a servosystem (drive and engine), the gearbox type is crucial for accurate and repeatable motion. Planetary gearboxes suit you perfectly for servo applications.
High-precision helical planetary gearboxes are an excellent choice for applications that require precision and reliability. Planetary gearboxes have got very low backlash rankings (typically ranging from someone to nine arc-min), and when sized correctly provide a service life of over 20,000 hours with practically no maintenance. Helical planetary gears also provide very calm and more efficient operation 
in comparison with competitive products.
Precision gearboxes are carefully machined to high tolerances – think clockmaker, not blacksmith. They provide power densities that means small bundle size and efficiencies of 90% and greater.
Servomotors often drive loads directly with no need for a gearbox, but in many applications it’s beneficial to use a gearbox between the motor and load.
One main reason to employ a gearbox is torque multiplication. It lets designers use smaller sized servosystems that consumes less energy. Rather than buying relatively large servodrives and motors, developer can use smaller components, saving space and cash.
Output torque improves in direct proportion to the apparatus ratio, and top acceleration of the output shaft decreases. If an application can withstand the reduced speed, a relatively little servosystem can supply high torque.
Gearboxes can also address inertia mismatches. For high performance servosystems — those with high dynamic responses or low overshoot, for example – the ratio between your reflected load inertia and motor inertia should be only practical, preferably under ten-to-one. A precision gearbox decreases the reflected inertia by the square of the reduction ratio. For instance, using a 25:1 gearbox reduces the load’s reflected inertia by one factor of 625, a substantial improvement.