Product Description
We specialize in designing and manufacture highly engineered, custom components and assemblies. Our professional staff are geared towards providing customers with high quality products and excellent service .
Our main products, steel gearboxes for motors through powder metallurgy processing.
A gearbox is a power transmission device to produce high torque by reducing the drive speed or increase the drive speed the other way. Planetary gearbox consisting 3 components: sun gear, planet gear and ring gear . A Sun gear is a gearwheel in a planetary gear system, that rotates around its own axis and has other gears (planet gears) that rotate around it. Much like the Sun and planets in our solar system. The amount of planetary gears in a gearbox varies based on the gear ratio. Most planetary gearboxes have from 2 to 5 planet gears. When looking at planetary gears, the strength of the gearbox is usually determined by the size of the sun gear. Larger sun gears will allow for higher torque values. The planet carrier,Its objective is to hold up to gears of the same size, which mesh with the sun gear. In a simple planetary gearbox setup, input power turns the sun gear at high speed. The planets, spaced around the central axis of rotation, mesh with the sun as well as the fixed ring gear, so they are forced to orbit as they roll. All the planets are mounted to a single rotating member, called carrier. As the planet carrier turns, it delivers low-speed, high-torque output. The Sun Gear Gets The Input While The 3 Planet Gears Provide The Ouput Via A Planet Carrier .
Our gearbox,Light weight,small size, high carrying capacity, long service life .Smooth operation, low noise, large output torque, large speed ratio, high efficiency, power diversion, and multi-tooth meshing by powder metallurgy process .
Gearbox ratio 3 to 1000 .
Customized metal parts specification
| Product type | Planetary gearbox , gear parts , speed reducer , transmission reduction |
| Material | metal steel |
| Process | Powder metallurgy , metal injection molding |
| Treatment | plating ,sand blasting , PVD , coating |
| Tolerance | ±0.3% |
| Drawing format | DWG ,IGS , STP |
| Delivery time | 10 days for mass production |
Powder metallurgy (PM) is a metal parts / components fabrication way and made from metal powders material . The process of powder metallurgy (PM) is blending fine powder materials , press them into a desired shape or form compacting , and heating the compressed material in a controlled atmosphere to CHINAMFG the material sintering .PM process can avoid , or greatly reduce the need to use metal removal processes,thereby drastically reducing yield losses in manufacture and oftern resulting in lower costs .
The powder metallurgy (PM) consist 3 steps : powder blending,compaction and sintering .Common products include gears , structural metal parts , bushings used for automobiles , appliances and powder equipments .
Advantages of powder metallurgy
Products made by powder metallurgy (PM) generally do not need further finishing , because produces good surface finish.
Maintains close dimensional tolerances
Provides materials which may be heat treated for increased strength or enhanced wear resistance .
There is less wastage of raw material , can be very economical for mass production .
Complex shapes parts can be made . Provides controlled porosity for self-lubrication or filtration.
Suits to high volume parts productions requirements .
Custom metal parts
Workshop
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| Application: | Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car |
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| Function: | Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase |
| Layout: | Coaxial |
| Hardness: | Hardened Tooth Surface |
| Installation: | Vertical Type |
| Step: | Three-Step |
| Samples: |
US$ 6/Piece
1 Piece(Min.Order) | |
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| Customization: |
Available
| Customized Request |
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Can planetary gears be used in high-torque applications?
Yes, planetary gears are well-suited for high-torque applications due to their design characteristics and capabilities. Let’s explore why planetary gears can be used in high-torque applications:
- Torque Distribution:
Planetary gears are designed to distribute torque across multiple gear teeth, allowing them to handle higher torque loads. The arrangement of planet gears around the sun gear and meshing with the ring gear enables torque to be transmitted through multiple contact points simultaneously. This distributed torque distribution helps in reducing stress on individual gear teeth and enhances the overall torque-carrying capacity of the gear system. As a result, planetary gears can effectively handle high torque loads without compromising performance or durability.
- High Torque Density:
Planetary gears offer high torque density, meaning they can transmit a significant amount of torque relative to their size and weight. The design of planetary gears allows for multiple gear teeth to engage simultaneously, distributing the load and increasing torque-carrying capacity. This high torque density makes planetary gears suitable for applications that require substantial torque output in compact spaces. They can handle the demands of high-torque requirements without the need for larger gear systems.
- Torque Amplification:
Planetary gears can also provide torque amplification, allowing for increased torque output compared to the input torque. By fixing the ring gear and inputting power to the sun gear, the planet gears rotate and contribute to multiplying the torque. This torque amplification feature is advantageous in high-torque applications where a higher output torque is desired while maintaining a smaller physical size. It enables planetary gears to deliver the necessary torque for demanding tasks.
- Load Sharing:
Another advantage of planetary gears in high-torque applications is load sharing. The planet gears distribute the load across multiple gear teeth, preventing concentrated stress on individual teeth. This load sharing capability minimizes the risk of gear failure and ensures the durability and longevity of the gear system. It allows planetary gears to handle high torque loads while maintaining reliable and efficient operation.
- Robust Construction:
Planetary gears are typically constructed using high-strength materials and precise manufacturing techniques to withstand high torque applications. The gear components are engineered to have sufficient strength and durability to handle the demanding conditions associated with high torque. This robust construction ensures that the planetary gears can reliably transmit and sustain high torque without experiencing premature wear or failure.
In summary, planetary gears can be effectively used in high-torque applications due to their torque distribution capabilities, high torque density, torque amplification, load sharing characteristics, and robust construction. These features make planetary gears a reliable choice for various industries, including heavy machinery, automotive drivetrains, industrial equipment, and more.

Can you explain the process of gear shifting in planetary gear systems?
Gear shifting in planetary gear systems involves changing the gear ratio by engaging or disengaging specific components of the gear set. Let’s explore the process of gear shifting in more detail:
- Clutching and Braking:
The gear shifting process in planetary gear systems primarily relies on clutching and braking mechanisms. These mechanisms selectively connect or disconnect various gears within the system to achieve the desired gear ratio. Here are the key steps involved:
- Clutch Engagement:
To shift to a higher gear ratio, the clutch associated with the gear component that needs to be engaged is activated. The clutch connects the rotating member, such as the sun gear, planet carrier, or ring gear, to the stationary member, allowing torque transmission. This engagement results in a change in the gear ratio, leading to higher speed or torque output depending on the specific gear set configuration.
- Brake Application:
On the other hand, to shift to a lower gear ratio, a brake associated with the gear component that needs to be disengaged is applied. The brake immobilizes or slows down the rotation of the selected gear element, preventing it from transmitting torque. By selectively braking certain components, the gear ratio is altered, resulting in a lower speed or higher torque output.
- Sequential Shifting:
In some planetary gear systems, gear shifting is performed sequentially. This means that one gear component is engaged or disengaged at a time, gradually transitioning from one gear ratio to another. Sequential shifting allows for smooth and controlled gear changes, minimizing the stress on the transmission components and ensuring seamless power transmission.
- Electronic Control:
In modern applications, gear shifting in planetary gear systems is often electronically controlled. Electronic control systems utilize sensors, actuators, and a control unit to monitor various parameters such as vehicle speed, engine load, and driver input. Based on these inputs, the control unit determines the optimal gear shift points and actuates the clutches and brakes accordingly. Electronic control enhances the efficiency, precision, and automation of the gear shifting process.
In summary, gear shifting in planetary gear systems involves the engagement and disengagement of clutches and brakes to alter the gear ratio. By selectively connecting or disconnecting specific gear components, the speed and torque output can be adjusted. Sequential shifting and electronic control systems further enhance the gear shifting process, providing smooth and efficient operation in various applications, including automotive transmissions and industrial machinery.

What industries commonly use planetary gears in their applications?
Planetary gears find applications in a wide range of industries and mechanical systems. Let’s explore some of the industries that commonly utilize planetary gears:
- Automotive Industry:
The automotive industry extensively uses planetary gears in various applications. Planetary gears are commonly found in automatic transmissions, where they enable smooth gear shifting, provide different gear ratios, and transmit torque efficiently. They are also used in differential systems, allowing wheels to rotate at different speeds while maintaining power distribution.
- Robotics and Automation:
Planetary gears play a crucial role in robotics and automation systems. They are employed in robotic joints and actuators to provide precise motion control, compact size, and high torque transmission. Planetary gears enable robotic arms to move accurately and handle heavy loads, making them essential components in industrial robots and robotic manipulators.
- Aerospace and Aviation:
The aerospace and aviation industries utilize planetary gears in various applications. They are used in aircraft landing gear systems, where they provide reliable torque transmission and compact design. Planetary gears are also employed in aircraft engine systems, helicopter rotor systems, and satellite mechanisms due to their efficiency, high torque capacity, and ability to operate in space-restricted environments.
- Power Generation:
Planetary gears are utilized in power generation equipment, including wind turbines and hydroelectric generators. In wind turbines, planetary gears enable the conversion of low-speed rotor rotation to high-speed generator rotation, ensuring efficient power generation. They are also employed in hydroelectric generators to transmit power from turbines to electrical generators, providing gear reduction and torque amplification.
- Industrial Machinery:
Planetary gears are widely used in industrial machinery applications. They are found in heavy-duty machinery such as mining equipment, construction machinery, and material handling systems. Planetary gears provide high torque transmission, compactness, and durability, making them suitable for handling demanding tasks in industrial environments.
- Marine and Shipbuilding:
The marine and shipbuilding industries employ planetary gears in various marine propulsion systems. They are used in marine engines, propeller systems, and thrusters. Planetary gears provide efficient power transmission, speed control, and compact design for propulsion systems in vessels ranging from small boats to large ships.
- Medical Equipment:
In the medical field, planetary gears are utilized in various equipment and devices. They are found in medical imaging systems like CT scanners and MRI machines, providing precise motion control and reducing image distortion. Planetary gears are also used in surgical robots and medical devices that require compact size, high torque, and accurate positioning.
These are just a few examples of the industries that commonly use planetary gears in their applications. The versatility, efficiency, and compactness of planetary gears make them suitable for a broad range of industries where precise motion control, torque transmission, and space-saving design are essential requirements.


editor by CX 2024-04-09