With the many commercial 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 electric motor), the gearbox type is servo motor gear reducers critical 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 need precision and reliability. Planetary gearboxes have very low backlash ratings (typically ranging from someone to nine arc-min), and when sized correctly provide a service life of over 20,000 hours with practically no maintenance. Helical planetary gears also provide very calm and better operation in comparison with competitive products.
Precision gearboxes are carefully machined to high tolerances – believe clockmaker, not blacksmith. They provide power densities that means small bundle size and efficiencies of 90% and greater.
Servomotors often drive loads directly with no need for a gearbox, but in many applications it’s beneficial 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 less energy. Rather than buying relatively huge servodrives and motors, developer can use smaller parts, saving space and cash.
Output torque raises in direct proportion to the apparatus ratio, and top quickness of the output 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 — those with high dynamic responses or low overshoot, for instance – 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 reduction ratio. For instance, utilizing a 25:1 gearbox decreases the load’s reflected inertia by one factor of 625, a significant improvement.