Planetary Gearbox

The planetary gearboxes normally consist of three parts: a sun gear, planet gears (or called “satellite gears”), and a ring gear. The sun gear is generally placed in the center, while planet gears orbit around the sun gear and receive torque from it. As for the ring gear, the outer ring gear (refers to the housing) meshes with planet gears.

 

The advantages of the planetary gearbox are as follows:

  • High torque: With more teeth in contact, the mechanism can transmit and withstand more torque in a more uniform manner.
  • Durable & Efficient. The bearing can reduce the friction by connecting the shaft directly to the gearbox. It allows for better rolling and smooth operation. The efficiency is improved as well.
  • Easy to install. Its mechanism is contained in a cylindrical gearbox, which can be installed in almost any space.
  • Impressive precision: The angle of rotating is fixed, thus improving the accuracy and stability of the rotary motion.
  • Compact size. Due to the planetary structure that multiple gears are meshed together and orbit around a sun gear, the planetary gear motor can be compact and small. 3.4mm, 4mm planetary gear motor, and 6mm planetary gear motor is available.
4MM Metal Planetary Gearbox

4MM Metal Planetary Gearbox

Model: ZWBMD004004-XXX
Gear Stages: 1 – 4
Voltage: 1.5-5V
Speed: 2.4 – 300 rpm
Torque: 0.02 – 16.67mN.m
Reduction Ratio: 5/25/125/625:1

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6MM Metal Planetary Gearbox

6MM Metal Planetary Gearbox

Model: ZWBMD006006-XXX
Gear Stages: 1 – 4
Voltage: 3.0 – 12.0V
Speed: 10 – 3299 rpm
Torque: 0.32 – 32.36mN.m
Reduction Ratio: 5 – 1708:1

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8MM Metal Planetary Gearbox

8MM Metal Planetary Gearbox

Model: ZWMD008008-XXX
Gear Stages: 1 – 4
Voltage: 3.0 – 12.0V
Speed: 15 – 3361 rpm
Torque: 0.4 – 58.8mN.m
Reduction Ratio: 4 – 809:1

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22mm metal planetary gearbox

22MM Metal Planetary Gearbox

Model: ZWBMD022022-XXX
Gear Stages: 1 – 4
Voltage: 3.0 – 24.0V
Speed: 5 – 1675 rpm
Torque: 15.7 – 980.7mN.m
Reduction Ratio: 4 – 1296:1

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24mm metal planetary gearbox

24MM Metal Planetary Gearbox

Model: ZWBMD024024-XXX
Gear Stages: 1 – 4
Voltage: 3.0 – 24.0V
Speed: 4 – 1259 rpm
Torque: 7.2 – 1392.1mN.m
Reduction Ratio: 4 – 1296:1

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28MM metal planetary gearbox

28MM Metal Planetary Gearbox

Model: ZWBMD028028-XXX
Gear Stages: 1 – 4
Voltage: 3.0 – 24.0V
Speed: 5 – 1658 rpm
Torque: 25.6 – 3236.3mN.m
Reduction Ratio: 4 – 1296:1

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32MM metal planetary gearbox

32MM Metal Planetary Gearbox

Model: ZWBMD032032-XXX
Gear Stages: 1 – 4
Voltage: 3.0 – 24.0V
Speed: 5 – 1213 rpm
Torque: 38 – 4,007 mN.m
Reduction Ratio: 4 – 1076:1

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38mm metal planetary gearbox

38MM Metal Planetary Gearbox

Model: ZWMD038038-XXX
Gear Stages: 1 – 4
Voltage: 3.0 – 24.0V
Speed: 3 – 1294 rpm
Torque: 97.5 – 7845.6 mN.m
Reduction Ratio: 4 – 1526:1

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