With the many industrial gearboxes on the market, it’s important to match the proper type of gearbox with the drive, motor, and load. Whenever a machine needs a servosystem (drive and electric motor), the gearbox type is critical for accurate and repeatable motion. Planetary gearboxes fit the bill for servo applications.
High-precision helical planetary gearboxes are a great choice for applications that need 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 existence of over 20,000 hours with virtually no maintenance. Helical planetary gears provide very tranquil 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 advantageous 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 much less energy. Instead of buying relatively large servodrives and motors, designer can use smaller elements, saving space and cash.
Output torque increases in direct proportion to the apparatus ratio, and top velocity of the result shaft decreases. If a credit card applicatoin can withstand the reduced speed, a relatively small servosystem can supply high torque.
Gearboxes may also address inertia mismatches. For high performance servosystems — people that have high powerful responses or low overshoot, for instance – the ratio between the reflected load inertia and motor inertia should be only practical, ideally under ten-to-one. A precision gearbox decreases 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 substantial improvement.