A planetary gearbox, also known as an epicyclic gearbox, is a high-precision gear system characterized by its compact design and high torque transmission capabilities. It consists of a central sun gear, multiple planet gears that rotate around the sun gear, a ring gear that encases the planet gears, and a carrier that holds the planet gears in place. This configuration allows for efficient power distribution and high gear ratios in a small footprint, making it ideal for applications requiring high torque and low space, such as robotics, automotive transmissions, and industrial machinery. Planetary gearboxes are renowned for their durability, smooth operation, and ability to handle heavy loads with minimal backlash.
Planetary gearboxes offer several advantages over traditional gear systems. Their compact design allows for integration into tight spaces without compromising performance. They provide high torque density, meaning they can transmit more torque relative to their size. Additionally, planetary gear systems exhibit high efficiency due to the distribution of load among multiple planet gears, reducing wear and extending service life. Other benefits include low backlash, excellent shock load resistance, and precise motion control, making them suitable for demanding applications in various industries.
Our planetary gearboxes are engineered to meet rigorous industrial standards. Below is a detailed list of specifications for our standard models:
For a quick comparison, refer to the table below summarizing key parameters across our product series:
| Model Series | Gear Ratio | Rated Torque (Nm) | Backlash (arc-min) | Efficiency (%) | Weight (kg) |
|---|---|---|---|---|---|
| PG100 | 3:1 - 10:1 | 500 | <3 | 97 | 2.5 |
| PG200 | 10:1 - 30:1 | 2,000 | <4 | 96 | 8.0 |
| PG300 | 30:1 - 60:1 | 5,000 | <5 | 95 | 15.0 |
| PG400 | 60:1 - 100:1 | 10,000 | <5 | 94 | 25.0 |
Planetary gearboxes are versatile and used in numerous industries due to their reliability and performance. Common applications include:
What is the main advantage of a planetary gearbox over other types?
The primary advantage is its high torque density and compact size. By distributing the load across multiple planet gears, it can handle more torque in a smaller package compared to traditional gearboxes, with lower backlash and higher efficiency.
How do I select the right planetary gearbox for my application?
Consider factors such as required torque, speed, gear ratio, space constraints, and environmental conditions. Calculate the peak and continuous torque loads, input RPM, and desired backlash. Our product tables and customer support can help guide you to the appropriate model based on these parameters.
What maintenance does a planetary gearbox require?
Most planetary gearboxes are designed for low maintenance. They come pre-lubricated, and relubrication intervals can be up to 20,000 hours depending on the model and operating conditions. Regular inspections for wear, noise, or leaks are recommended, especially in harsh environments.
Can planetary gearboxes be used in high-temperature environments?
Yes, our gearboxes are rated for temperatures from -40°C to 120°C. For higher temperatures, special lubricants and materials can be used; consult our technical team for custom solutions.
What is backlash, and why is it important?
Backlash is the slight movement between gears when direction is reversed. Low backlash (e.g., less than 5 arc-min) is crucial for precision applications like robotics and CNC machines to ensure accurate positioning and smooth operation.
Are planetary gearboxes reversible?
Yes, planetary gearboxes can typically operate in both directions, making them suitable for applications requiring bidirectional motion. However, always check the manufacturer's specifications for any limitations based on ratio and load.
How long does a planetary gearbox last?
With proper selection and maintenance, a planetary gearbox can last over 20,000 hours of operation. Lifespan depends on factors like load, speed, lubrication, and environmental conditions; our products are built for durability and long service life.
Can I customize a planetary gearbox for specific needs?
Absolutely. We offer customization options including special ratios, materials, seals, and mounting configurations. Provide your requirements, and our engineering team will develop a solution tailored to your application.
