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. Whenever a machine needs a servosystem (drive and engine), 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 have very low backlash rankings (typically ranging from one to nine arc-min), and when sized correctly offer a service existence of over 20,000 hours with practically no maintenance. Helical planetary gears provide very quiet and more efficient operation when compared 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 with no need for a gearbox, however in many applications it’s beneficial to use 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 much less energy. Rather than buying relatively large servodrives and motors, developer can use smaller elements, saving space and money.
Output torque raises in direct proportion to the gear ratio, and top velocity 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 — those with high dynamic responses or low overshoot, for example – the ratio between your reflected load inertia and engine inertia should be only practical, preferably under ten-to-one. A precision gearbox decreases the reflected inertia by the sq . of the decrease ratio. For instance, utilizing a 25:1 gearbox reduces the load’s reflected inertia by one factor of 625, a significant improvement.