With the many industrial gearboxes on the market, it’s important to match the proper kind of gearbox with the drive, motor, and load. Whenever a machine requires a servosystem (drive and motor), the gearbox type is crucial for accurate and repeatable motion. Planetary gearboxes suit you perfectly for servo applications.
High-precision helical planetary gearboxes are a great choice for applications that require accuracy and reliability. Planetary gearboxes have got very low backlash ratings (typically ranging from one to nine arc-min), and when sized correctly provide a service life of over 20,000 hours with virtually no maintenance. Helical planetary gears provide very quiet and more efficient operation as compared to competitive products.
Precision gearboxes are carefully machined to high tolerances – believe clockmaker, not blacksmith. They offer power densities that means small bundle size and efficiencies of 90% and greater.
Servomotors often drive loads directly without the need for a gearbox, however in many applications it’s advantageous to make use of a gearbox between your motor and load.
One main reason to employ a gearbox is torque multiplication. It lets designers use smaller servosystems that consumes much less energy. Instead of buying relatively large servodrives and motors, designer can use smaller parts, saving space and cash.
Output torque improves in direct proportion to the gear ratio, and top speed 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 powerful servosystems — people that have high dynamic responses or low overshoot, for example – the ratio between the reflected load inertia and electric motor 
inertia should be only practical, ideally under ten-to-one. A precision gearbox reduces the reflected inertia by the sq . of the decrease ratio. For instance, using a 25:1 gearbox reduces the load’s reflected inertia by a factor of 625, a substantial improvement.