With the many industrial gearboxes available today, it’s vital that you match the proper type 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 servo motor gear reducers motion. Planetary gearboxes fit the bill for servo applications.
High-precision helical planetary gearboxes are an excellent choice for applications that need precision and reliability. Planetary gearboxes have got very low backlash ratings (typically ranging from someone to nine 
arc-min), so when sized correctly provide a service life of over 20,000 hours with virtually no maintenance. Helical planetary gears provide very peaceful and more efficient operation as compared to 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, but in many applications it’s advantageous to use a gearbox between your motor and load.
One main cause to use a gearbox is torque multiplication. It lets designers make use of smaller sized servosystems that consumes much less energy. Instead of buying relatively huge servodrives and motors, designer can use smaller components, saving space and money.
Output torque raises in direct proportion to the apparatus ratio, and top acceleration of the result 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 — people that have high powerful responses or low overshoot, for example – the ratio between the reflected load inertia and electric motor inertia should be only practical, preferably under ten-to-one. A precision gearbox decreases the reflected inertia by the square of the decrease ratio. For instance, utilizing a 25:1 gearbox decreases the load’s reflected inertia by one factor of 625, a significant improvement.
