With the many commercial gearboxes available today, it’s vital that you match the proper kind of gearbox with the drive, motor, and load. Whenever a machine needs 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 very low backlash rankings (typically ranging from someone to nine arc-min), so when sized correctly offer a service lifestyle of over 20,000 hours with practically no maintenance. Helical planetary gears provide very peaceful and better 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 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 cause to use a gearbox is torque multiplication. It lets designers use smaller sized servosystems that consumes less energy. Instead of buying relatively large servodrives and motors, designer can use smaller components, saving space and money.
Output torque increases in direct proportion to the gear ratio, and top speed of the output shaft decreases. If an application can withstand the decreased speed, a relatively small servosystem can supply high torque.
Gearboxes can also address inertia mismatches. For high performance servosystems — those with high dynamic responses or low overshoot, for example – the ratio between the reflected load inertia and motor inertia should be as low as 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 reduces the load’s reflected inertia by one factor of 625, a significant improvement.