With the many commercial gearboxes on the market, it’s vital that you match the proper kind of gearbox with the drive, motor, and load. When a machine requires 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 (typically ranging from someone to nine arc-min), so when sized correctly offer a service existence of over 20,000 hours with practically no maintenance. Helical planetary gears provide very noiseless and more efficient operation when compared with competitive products.
Precision gearboxes are carefully machined to high tolerances – think clockmaker, not blacksmith. They provide 
power densities that translates to small bundle size and efficiencies of 90% and greater.
Servomotors often drive loads directly without the need for a gearbox, but in many applications it’s advantageous to make use of a gearbox between your motor and load.
One main cause to employ a gearbox is torque multiplication. It lets designers use smaller servosystems that consumes less energy. Instead of buying relatively huge servodrives and motors, developer can use smaller elements, saving space and cash.
Output torque boosts in direct proportion to the apparatus ratio, and top quickness of the result shaft decreases. If an application can withstand the decreased 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 instance – the ratio between your reflected load inertia and motor inertia should be only practical, preferably under ten-to-one. A precision gearbox reduces the reflected inertia by the sq . of the reduction ratio. For instance, utilizing a 25:1 gearbox decreases the load’s reflected inertia by a factor of 625, a significant improvement.