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 electric motor), the gearbox type is crucial for accurate and repeatable motion. Planetary gearboxes fit the bill for servo applications.
High-precision helical planetary gearboxes are an excellent choice for applications that require precision and reliability. Planetary gearboxes possess very low backlash 
rankings (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 peaceful and more efficient operation in comparison with competitive products.
Precision gearboxes are carefully machined to high tolerances – believe clockmaker, not blacksmith. They offer power densities that means 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 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. Instead of buying relatively huge servodrives and motors, designer can use smaller parts, saving space and cash.
Output torque boosts in direct proportion to the apparatus ratio, and top quickness of the result shaft decreases. If a credit card applicatoin can withstand the decreased speed, a relatively small servosystem can supply high torque.
Gearboxes may also address inertia mismatches. For powerful servosystems — people that have high powerful responses or low overshoot, for example – the ratio between your reflected load inertia and electric motor inertia should be only practical, ideally under ten-to-one. A precision gearbox decreases the reflected inertia by the sq . of the decrease ratio. For instance, using a 25:1 gearbox decreases the load’s reflected inertia by one factor of 625, a substantial improvement.