Planetary Gearboxes

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What Are A Planetary Gearboxes?

A planetary gearbox is a type of gear system that uses a central sun gear, one or more planet gears, and an outer ring gear, also known as an annulus, to transmit torque and power between rotating shafts. The planet gears are typically mounted on a carrier, which is itself mounted on a central shaft. The sun gear is located in the center of the planetary gear system and is surrounded by the planet gears, which rotate around it. The outer ring gear meshes with the planet gears, providing the output torque.

Planetary gearboxes are known for their high efficiency, compact size, and ability to provide high torque output. They are commonly used in a wide range of industrial applications, including robotics, automation, aerospace, and automotive industries. Planetary gearboxes are designed to provide a compact and efficient solution for transmitting power and torque between rotating shafts.


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How To Maintain The Planetary Gearboxes?

Check the oil level: The oil level should be checked regularly and topped up as needed.

Change the oil: The oil should be changed at regular intervals, depending on the application.

Inspect the seals: The seals should be inspected regularly for any signs of leaks.

Lubricate the bearings: The bearings should be lubricated regularly with the correct type of lubricant.

Clean the gearbox: The gearbox should be cleaned regularly to remove any debris or contaminants.


Planetary Gearboxes Advantages


High power density

Planetary gearboxes can transmit a lot of power in a small space. This makes them well-suited for applications where space is limited, such as in robots and aerospace applications.

Compact size

Planetary gearboxes are relatively compact, which makes them easy to install and use. This is another advantage in applications where space is limited.


 Planetary gearboxes are lightweight, which makes them easy to transport and handle. This is another advantage in applications where weight is a concern, such as in aerospace applications.

How An Planetary Gearboxes Works?

A planetary gearbox is a type of gear train that uses multiple gears to transmit power. They are characterized by their high power density, compact size, light weight, high efficiency, and high torque transmitting capacity.

Planetary gearboxes are made up of three main components:

  • Sun gear: The sun gear is the central gear in the planetary gearbox. It is the input gear and is the gear that the power is applied to.
  • Planet gears: The planet gears are the smaller gears that orbit the sun gear. They are the output gears and are the gears that transmit the power to the output shaft.
  • Carrier: The carrier is the central hub that the planet gears are mounted on. It is the output shaft and is the shaft that the power is transmitted to.






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Custom Design

As a service to our customers, we offer extensive manufacturing experience and talent to meet the special needs of custom parts. Our in-house engineering team has extensive experience in designing and custom engineering solutions to meet your requirements. If you don’t see what you’re looking for in our standard range, please inquire about custom options.