A Planetary Carrier is used to transmit torque and achieve different gear ratios in the Swing Drive. Withstand the forces, stresses, and temperatures. Allows for efficient power transfer and enables the gear system to handle high torque loads. A Planetary Carrier, also known as a carrier plate, is a key component within a planetary gear system. It serves as a central structure that houses and supports the planet's gears, facilitating their rotation and transmitting torque within the gear assembly. It is aftermarket parts for replacement. It is made in high quality standards and the working performance is really perfect..syi