With the many industrial gearboxes on the market, it’s vital that you match the proper kind of gearbox with the drive, motor, and load. When a machine needs a servosystem (drive and engine), the gearbox type is crucial for accurate and repeatable movement. 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 possess very low backlash rankings (typically ranging from one to nine arc-min), so when sized correctly provide a service lifestyle of over 20,000 hours with practically no maintenance. Helical planetary gears provide very noiseless 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 beneficial to make use of a gearbox between your motor and load.
One main cause to employ a gearbox is torque multiplication. It lets designers use smaller sized servosystems that consumes much less energy. Instead of buying relatively huge servodrives and motors, developer can use smaller components, saving space and cash.
Output torque increases in direct proportion to the gear ratio, and top acceleration of the output shaft decreases. If a credit card applicatoin can withstand the decreased speed, a relatively little servosystem can supply high torque.
Gearboxes can also address inertia mismatches. For powerful servosystems — those with high powerful responses or low overshoot, for example – the ratio between the servo motor gear reducers reflected load inertia and electric motor inertia should be as low as practical, ideally under ten-to-one. A precision gearbox reduces the reflected inertia by the sq . of the reduction ratio. For instance, using a 25:1 gearbox reduces the load’s reflected inertia by one factor of 625, a significant improvement.