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A planetary servo gearbox is a type of gearbox commonly used in servo motor applications. It is designed to provide precise and efficient power transmission while offering high torque density and compact size.

The planetary servo gearbox consists of several components, including a sun gear, multiple planet gears, a planet carrier, and a ring gear. The sun gear is located at the center and is surrounded by planet gears, which are connected to the planet carrier. The planet gears mesh with both the sun gear and the ring gear. This arrangement creates multiple contact points, distributing the load and increasing torque capacity.

The main advantage of a planetary servo gearbox is its ability to achieve high gear ratios in a compact design. The multiple planet gears allow for efficient torque transmission, minimizing backlash and ensuring precise motion control. Additionally, the design provides excellent torsional rigidity, reducing torsional backlash and improving overall system performance.

Planetary servo gearboxes are widely used in various industries, including robotics, automation, CNC machinery, and industrial equipment. They are commonly paired with servo motors to provide accurate and controlled movement in applications where precise positioning and high torque are required.