Planetary Gear Motors

High-torque planetary gear motors built for demanding applications requiring power density, precision, and long service life.

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A Closer look

What is a Planetary Gear Motor

Definition

A planetary gear motor uses a sun gear, planet gears, and ring gear to provide high load capacity and superior torque in a compact size.

Key Benefits

High torque output with compact structure
Excellent load distribution and durability
Low backlash for precise motion

Why Choose us

Why Choose SLW Motor

Customisation capability

We offer custom voltage, sizes (Ø10–22 mm), gear types, and add-ons such as encoders or Hall sensors, ensuring a perfect fit for your specific design.
Quality focus

With 20 years of manufacturing experience and ISO 9001 certification, SLW Motor delivers reliable products with consistent quality and durability.
Relevant performance features

Our motors feature low noise, high torque, high efficiency, and smooth operation, meeting the needs of demanding precision systems.
Gearbox & integration support

SLW Motor provides complete gearbox solutions—planetary or spur—simplifying assembly and improving performance for your motor applications.

Applications

Planetary Gear Motor Applications

Robotics and Automation

Planetary gear motors deliver high torque and low backlash, making them ideal for robotic joints, grippers, and automated actuators. Their compact size and strong load-handling capability ensure smooth and accurate movement in industrial automation systems.

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Medical and Laboratory Equipment

Industrial Machinery

Aerospace and Defense

Power Tools and Portable Equipment

FAQ

Frequently Asked Questions

Find quick answers to the most common questions about our planetary gear motors.

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What is a planetary gear motor?

A planetary gear motor is a motor equipped with a planetary gearbox, using a sun gear, planet gears, and a ring gear to deliver high torque, compact size, and excellent load distribution. This structure provides higher efficiency and durability compared to spur or worm designs.

What are the main advantages of planetary gear motors?

Planetary gear motors offer: High torque density in a small footprint, Low backlash and smooth operation, High load capacity and long service life, Excellent efficiency (typically 90%+). These benefits make them ideal for demanding industrial applications.

What applications commonly use planetary gear motors?

They are used in AGVs/AMRs, medical equipment, robotics, smart manufacturing, aerospace mechanisms, electric tools, motion control systems, and automated equipment requiring precise and powerful torque output.

How do planetary gear motors compare to spur gear motors?

Planetary gear motors provide higher torque, better load distribution, and lower noise. Spur gear motors are simpler and more cost-effective but less suited for high-load or precision applications. Planetary systems are preferred for heavy-duty or continuous-duty performance.

Does a planetary gear motor support high radial loads?

Yes. The balanced multi-gear structure distributes forces evenly, allowing the gearbox to handle significantly higher radial and axial loads compared to traditional gear trains.

Can I customize reduction ratio, torque, and speed?

Yes. As a manufacturer, we offer custom gear ratios, torque outputs, motor types (BLDC, brushed, coreless), shaft options, encoders, cable assemblies, and mounting configurations to meet specific project requirements.

How long is the lifespan of a planetary gear motor?

Lifespan depends on load, duty cycle, lubrication, and temperature. Under proper conditions, planetary gearboxes can operate thousands of hours with minimal wear. Brushless versions offer the longest overall service life.

Can planetary gear motors be used in high-precision systems?

Absolutely. Their low backlash, smooth rotation, and stable torque make them ideal for servo systems, robotics, and precision positioning tasks that require accurate control.