Swing Planetary Gear 7i-7784 7i7784 3PCS Fit Excavator Caterpillar CAT311 311B 312 312B 313B 315B 317B 318B E110B E120B

Product Name: Planetary Gear 2nd
Reference Part Number: 7i-7784 7i7784
Compatible Machine: Excavator Caterpillar CAT311 311B 312 312B 313B 315B 317B 318B E110B E120B…

Description:
A Planetary Gear is used within the swing drive, providing the necessary torque amplification and smooth operation. When power is transmitted to the swing drive, the sun gear receives rotational input, typically from a hydraulic motor or an electric motor. As the sun gear rotates, it drives the planet gears, which in turn rotate around the sun gear. The planet gears also engage with the internal teeth of the ring gear, causing the ring gear and the entire swing housing to rotate.