Planetary Gears For Planetary Gearbox

This planetary gear is used in high-performance planetary gearboxes. With a module of 0.5, it is constructed from high-quality 8620 low-alloy steel, combining excellent core toughness and surface hardening properties. After carburizing heat treatment, the gear surface hardness reaches HRC 58-62, forming a highly wear-resistant outer shell while maintaining a tough, impact-resistant core capable of withstanding impact loads and fatigue under cyclic stress.

Accuracy DIN 6 significantly reduces operating noise and vibration while improving transmission efficiency and positioning accuracy. Typical applications include servo actuators, precision machine tools, industrial robot joints, medical devices, and aerospace drive systems, all of which demand extremely high dynamic response and operational smoothness.

The synergistic effect of 8620 steel and the carburizing process endows the gear with exceptional contact fatigue strength and bending fatigue strength. The small module design enables high torque density within a compact gearbox, thus contributing to lightweight, miniaturized planetary gearbox designs.

Every gear gets checked and will provide full set of inspection reports, dimension report, material certs, heat treatment, accuracy report etc. And if you need a modified tooth profile or some custom correction, our engineering team can support too.

Specification

Module

0.5

Application

Planetary gearbox

Material

8620

Heat Treatment

Carburizing

Accuracy

DIN 6

Planetary Gears Application

Planetary gear set is named for its sun-like central gear and other planet gears running around sun gear. The planet gears are held by a carrier, and this system has excellent performance where space is tight but torque demands are high.

You’ll find the most common place of a planetary gear set is likely in your driveway. Nearly all modern cars automatic transmissions use planetary gears to achieve different gear ratios. Here, planetary gears enable smooth and seamless shifting unlike traditional manual gearboxes. It improves both fuel economy and driving comfort. Hybrid vehicles also use them as power-split devices, seamlessly combining engine and electric motor output. But planetary gear application is not limited to this.

Beyond transportation, planetary gear sets also work in heavy industry. For example, in wind turbines, they rely on planetary gearboxes transforming the slow, high-torque rotation of the rotor blades into the much faster speed required to generate electricity efficiently.

Construction equipment like excavators also rely on planetary drives in their tracks and turntables for precise, high-torque movement. Even robotics and aerospace are benefit from it. Robot joints require compact, high precision characteristics which planetary gears can deliver. In helicopter rotor hubs, planetary systems transfer power from turbine engines to main rotors with reliability.

In manufacturing, precision is paramount. Planetary gear sets demonstrate that superior engineering often works unseen, yet plays a crucial role. Undoubtedly, they are a fundamental component of modern mechanical power systems.

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Production process

6-Step Production Process

Forging

Turning

Gear Cutting

Heat Treatment

ID & OD & Surface Grinding

Tooth Grinding

Forging

When gears need high performance that needs to withstand high loads, high stress, impact loads or fatigue loads, forgings are suggested to use. Forging allows metal fibers to be continuously distributed along the gear profile, significantly improving root strength and fatigue life.

Turning

This is the process of cutting and shaping solid materials into precise parts. It uses tools like lathes, mills, and drills to remove excess material. Machining transforms a simple block of metal into a finished, functional component.

Gear Cutting

Gear Cutting includes all processes to create gear teeth after rough or fine machining. It shapes teeth to ensure smooth and efficient power transfer for performance, strength and cost efficiency.

Heat Treatment

Gears need to be running with two gears or above two gears, that makes them easy to be worn-out. That’s why most types of gears need to be harden through heat treatment.

ID-Grinding-Gear-Manufacturing-Process-Gear-Supplier-Belon

ID & OD & Surface Grinding

ID grinding, OD grinding, Surface grinding are all belonging to CNC grinding which are the foundational precision abrasive machining processes used to achieve exceptional dimensional accuracy and surface finishes, especially on hardened materials.

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Tooth Grinding

Tooth Grinding are the final processes are applied after heat treatment to correct distortion, improve geometry, and achieve the final surface finish necessary for quiet, efficient power transmission.

Inspection

Strict Quality Inspection

Dimension Inspection

Material Inspection

Heat Treatment Testing

UT & MT Testing

Meshing Testing

Accuracy Testing

Dimension Inspection

Material Inspection

Heat Treatment Testing

UT & MT Testing

Meshing Testing

Accuracy Testing

Download

Download To Learn More

Heat Treatment Report

Packages

Professional Packaging Safe Arrival

Customized cost-effective packages for products protection. We select multi-model solutions, combining air, sea, or land freight for the optimal balance of cost, speed, and reliability.

Inner Package

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Out Package

Carton

Wooden Package

Your Precision
Transmission Partner

Do you have drawings to be implemented, or problems to be solved? Please feel free to contact us. From initial inquiry and technical specification confirmation to production and delivery, our dedicated team will provide you with one-on-one service, ensuring that every step meets your stringent requirements for precision.

Planetary Gears For Planetary Gearbox

Planetary Gears Application