Planetary Gear Motor

Low Current & High Torque Planetary Gear Motors – Flexible Manufacturing OEM, ODM – 100% Tested Before Shipping – Custom Length Cables & Connectors – Sample & Small Order Acceptable – Quality Control All Process.

Small Planetary DC Gear Motors Introduction


A planetary gear motor is a type of motor that utilizes a planetary gear system to increase torque and reduce size. The motor consists of a sun gear, planet gears, and an outer ring gear. The planet gears orbit around the sun gear, and the outer ring gear forms an outer circumference that the planet gears orbit. The planetary gear motor is often used in robotics and industrial applications, as it is capable of providing high levels of torque in a small package.

The sun gear is the central piece of the planetary gear motor and is connected to the motor’s output shaft. When the sun gear is powered, the planet gears orbit around it, creating a powerful mechanical advantage. The planet gears also mesh with the outer ring gear, which is held in place by a stationary housing. This creates a powerful gear reduction, allowing the motor to generate high levels of torque while remaining relatively small in size.

The gear ratio of a planetary gear motor is determined by the number of teeth on each gear and the size of the planet gears. The gear ratio is the ratio of the number of teeth on the output gear (sun gear) to the number of teeth on the input gear (ring gear). The gear ratio can be adjusted by changing the sizes of the planet. Our smallest 6mm planetary dc gearmotors is more popular than the big ones.