China Hot selling Miniature Plastic Planetary Gear Small Module Precision Plastic Gear worm and wheel gear

Product Description

Custom CNC Nylon Gear Factory Design Speed Gear and Pinion
Nylon gears, acetal (also known as Delrin) gears, and UHMW rack and pinion were originally introduced to the market to fill niche applications; however, this is no longer the case as plastic gears have quickly become a disruptive technology.
While most gears are traditionally made from various metals, plastic gear technology is pushing the previous limits of load carrying, torque handling and gear drive capabilities. These plastic gears and racks are identical in design to metal gears and racks, so they are directly interchangeable with steel and other OEM and custom metal gears and racks.

For nylon gears, self-lubrication is a key advantage. An ongoing problem with many metal drive gears is the need for external lubrication, a major problem when the gear is inaccessible or the lubricant only exacerbates the problem (such as gears operating in high dust or CHINAMFG environments). Can withstand the same load requirements for many applications with longer part life. Many specialty grades are also available to enhance certain properties (such as tensile strength or abrasion resistance) or to meet certain requirements (such as FDA and USDA regulations). Nylon also has high compressive strength and an excellent coefficient of friction at a cost comparable to or lower than alternatives.
About Acetal, also known as Delrin, is ideal for close tolerance gears that operate in harsh environments and do not expand or contract significantly under extreme temperature changes. These acetal gears are typically quiet in operation while providing exceptional strength, toughness and low friction. Acetal gears have even recently found their way into the automotive industry, where load and torque requirements have traditionally limited the usefulness of plastic gears.
UHMW and other high-performance plastic gears and racks offer the advantages of reduced wear and noise reduction compared to their metal counterparts, and UHMW is often considered when impact resistance is key. Many customers report that their UHMW racks have component life that is 10 or even 15 times longer than metal racks.
In addition, we can also customize large modulus gears of other high-performance materials, please contact us for the latest material quotation

(1) According to the different strength and performance, we choose the steel with strong compression;
(2) Using Germany professional software and our professional engineers to design products with more reasonable size
and better performance;
(3) We can customize our products according to the needs of our customers,Therefore, the optimal performance of the
gear can be exerted under different working conditions;
(4) Quality assurance in every step to ensure product quality is controllableProduct parameters

Product parameters

Products    Gear
Module    M0.5-M10
Precision grade  DIN6, DIN7, DIN8, DIN10
Pressure angle 20 degree
Material  C45 steel, Stainless steel 304, Plastic, Brass, 20CrMo,40Cr and so on
Heat treatment Hardening and Tempering, High Frequency Quenching,Carburizing etc
Surface treatment Blacking, Polishing, Anodization, Chrome Plating, Zinc Plating, Nickel Plating
Application Precision cutting machines. Lathes. Milling machines. Grinders.
Automated mechanical systems. Automated warehousing systems.
Machining process Hobbing, Milling, Drilling, Shaving, Grinding


If you have any problems or want to get the quoted price of any plastics or machined components, please feel free to contact us. Our engineers will reply to you as soon as possible.

Our products cover auto parts mold, electrical appliances injection mold, medical machinery and so on. We provide products and services to more than 60 countries and regions in the world, including Europe, the United States and Southeast Asia.

Our Factory
Our factory has 100 sets of precision processing equipment, welcome to visit our factory!

The factory covers an area of 10,000 square CHINAMFG Production equipment has the original American imported Haas CNC machining center, wire-electrode cutting, electrical discharge machine,Perforating machine, injection molding machine, CNC milling machine,CNC hobbing machine, CNC lathe, CNC milling machine, CNC lathe, CNC milling machine, grinding machine and other machinery and equipment.
One-stop Service
OEM, ODM, Customization service,Reasonable and competitive price,Design for Manufacturability (DFM) analysis with every quote,Short Delivery Time.
Reliable mold expert 15+ years’ experience, Cooperated with many world famous brands for many years, Specialize in large and complex injection mold making, One-stop service from design to production.

Companies strictly enforce the ISO9001(2008)international quality certification system, the product quality conforms to the eu RoHS standard.

Professional team

Our company is developing in the mode of quality for survival, brand for development and customer’s demand, welcome new and old customers to visit our factory for guidance.

Client Witness

Our Exhibition & CCTV Interview

Buying Instructions
Q1. Can samples be produced?
A1. Yes
Q2. What is the accuracy of the products processed by the drawings?
A2. Different equipment has different accuracy, generally between 0.05-0.1
Q3. What craftsmanship do you have for processing accessories?
A3. According to different products, different processes are used, such as machining, extrusion, injection molding, etc.
Q4. What are your processing equipment?
A4. CNC machining center, CNC lathe, milling machine, engraving machine, injection molding machine, extruder, molding
Q5. Can you help assembling the product after it is made?
A5. It’s okay
Q6. What certifications or qualifications does your company have?
A6. Our company’s certificates are: ISO, ROHS, product patent certificates, etc.
Q7. Can injection products be surface treated? What are the surface treatments?
A7. It is ok. Surface treatment: spray paint, silk screen, electroplating, etc.


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Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car
Hardness: Soft Tooth Surface
Gear Position: Internal Gear
Manufacturing Method: Cast Gear
Toothed Portion Shape: Spur Gear
Material: Nylon


Customized Request

epicylic gear

How do planetary gears handle changes in speed and torque distribution?

Planetary gears are capable of effectively handling changes in speed and torque distribution due to their unique design and configuration. Let’s explore how planetary gears handle these changes:

  • Speed Changes:

Planetary gears can handle speed changes by utilizing the different gear ratios they offer. By adjusting the sizes and numbers of teeth on the sun gear, planet gears, and ring gear, different gear ratios can be achieved. When the input speed is applied to the sun gear, it gets transmitted to the planet gears, resulting in a specific output speed. By changing the gear ratio, the output speed can be adjusted accordingly. This ability to vary the gear ratio allows planetary gears to adapt to different speed requirements in mechanical systems.

  • Torque Distribution:

Planetary gears excel in distributing torque across multiple gear teeth, ensuring efficient torque transmission and load sharing. The planet gears are meshed with both the sun gear and the ring gear, enabling 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. The load is shared among the planet gears, preventing excessive wear and minimizing the risk of gear failure.

  • Torque Amplification:

Planetary gears can also handle 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. The arrangement of multiple gear sets in a compact design enables torque amplification, making planetary gears suitable for applications that require high torque output while maintaining a smaller physical size.

  • Load Balancing:

Another aspect of torque distribution in planetary gears is load balancing. The planet gears distribute the load across multiple gear teeth, reducing the concentration of forces on individual teeth. This load balancing capability results in improved gear system durability and longevity. It also helps in minimizing vibration, noise, and wear, ensuring smoother and more reliable operation.

  • Flexible Configuration:

Planetary gears offer flexibility in their configuration, allowing for the accommodation of changes in speed and torque distribution. The number of planet gears, the size of the gears, and their arrangement can be adjusted to meet specific application requirements. This flexibility enables planetary gears to handle a wide range of speed and torque variations, making them adaptable to different mechanical setups.

In summary, planetary gears handle changes in speed and torque distribution through their ability to adjust gear ratios, distribute torque across multiple gear teeth, amplify torque, balance loads, and accommodate flexible configurations. These characteristics make planetary gears suitable for applications that require precise control over speed and torque, efficient power transmission, and reliable performance.

epicylic gear

Can planetary gears be used in aerospace and aviation applications?

Planetary gears find extensive use in aerospace and aviation applications due to their unique characteristics and advantages. Let’s explore how planetary gears can be utilized in the aerospace and aviation industry:

  • Aircraft Engines:

Planetary gears play a crucial role in aircraft engines, especially in the reduction gearbox. The reduction gearbox connects the high-speed turbine shaft with the low-speed propeller shaft, allowing efficient power transmission while maintaining optimal propeller speed. Planetary gears within the reduction gearbox help achieve the required gear ratios and torque conversion, ensuring smooth and reliable engine operation.

  • Landing Gear Systems:

Planetary gears are also utilized in landing gear systems of aircraft. These gears provide the necessary torque and force to retract and extend the landing gear during takeoff and landing. Planetary gears offer compactness, high torque capacity, and the ability to handle heavy loads, making them suitable for this critical application.

  • Actuation Systems:

Actuation systems in aerospace and aviation, such as those used for flight control surfaces, also benefit from the use of planetary gears. These gears enable precise and reliable movement of control surfaces, such as ailerons, elevators, and rudders. Planetary gears’ ability to handle high torques, provide accurate positioning, and withstand varying loads makes them well-suited for actuation systems.

  • Satellite and Spacecraft Mechanisms:

In satellite and spacecraft applications, planetary gears are utilized in various mechanisms. They can be found in solar array drives, antenna pointing systems, and deployment mechanisms for scientific instruments. Planetary gears offer compactness, high torque transmission, and the ability to handle the extreme conditions of space environments.

  • Auxiliary Power Units (APUs):

APUs in aircraft are responsible for providing auxiliary power during ground operations and in-flight emergencies. Planetary gears are often employed in APU systems to transfer power from the engine to the auxiliary systems, such as electrical generators or hydraulic pumps. These gears ensure efficient power transmission and reliable operation of the APU.

In summary, planetary gears have significant applications in aerospace and aviation. They are utilized in aircraft engines, landing gear systems, actuation systems, satellite and spacecraft mechanisms, as well as auxiliary power units. The compact size, high torque capacity, precise positioning, and reliable operation of planetary gears make them well-suited for these critical applications in the aerospace and aviation industry.

epicylic gear

Can you explain the unique design and structure of planetary gears?

Planetary gears possess a unique design and structure that sets them apart from other gear systems. Let’s explore the distinctive features of the design and structure of planetary gears:

  • Components:

A planetary gear system consists of three main components: the sun gear, planet gears, and a ring gear. The sun gear is located at the center and is typically driven by an input source such as a motor or engine. The planet gears are gears that surround the sun gear and are connected to a carrier or arm. The ring gear is the outermost gear and meshes with the planet gears.

  • Internal Gear Meshing:

One of the distinguishing features of planetary gears is their internal gear meshing. Unlike other gear systems where the gears mesh externally, the teeth of the sun gear, planet gears, and ring gear are located on the inside surfaces. This arrangement allows for a compact and space-efficient design.

  • Orbiting Motion:

In planetary gears, the planet gears exhibit both rotational and orbital motion. While they rotate on their own axes, they also orbit around the sun gear. This combination of rotational and orbital movement enables the gear system to achieve different gear ratios and torque transmission.

  • Central Sun Gear:

The presence of a central sun gear is another characteristic of planetary gears. The sun gear is positioned at the center of the gear arrangement and serves as the primary driver for the overall gear operation. It receives the input power and transmits it to the planet gears.

  • Versatile Gear Ratios:

Planetary gears are capable of achieving a wide range of gear ratios. The gear ratio is determined by the relative sizes of the gears and the number of teeth on each gear. By varying the number of teeth on the sun gear, planet gears, and ring gear, different gear ratios can be obtained, providing versatility in speed reduction or amplification.

  • Load Distribution:

The arrangement of multiple planet gears in a planetary gear system helps distribute the load among the gears. This load distribution results in efficient torque transmission and enhanced durability. It also contributes to shock absorption and noise reduction during gear operation.

  • Compact Size:

Planetary gears are known for their compact size. The internal gear meshing and the integration of multiple gear sets within a single system contribute to their space-saving design. The compactness of planetary gears is advantageous in applications where size and weight restrictions are critical.

  • Wide Range of Applications:

Due to their unique design and structural characteristics, planetary gears find applications in various industries and mechanical systems. They are commonly used in automotive transmissions, robotics, aerospace systems, industrial machinery, and more. The ability to achieve different gear ratios, transmit torque efficiently, and operate in compact spaces makes planetary gears versatile in transmitting power.

In summary, the unique design and structure of planetary gears include components such as the sun gear, planet gears, and ring gear, internal gear meshing, orbiting motion of the planet gears, a central sun gear, versatile gear ratios, load distribution, compact size, and wide-ranging applications. These features contribute to the efficiency, versatility, and space-saving nature of planetary gears, making them suitable for various mechanical systems.

China Hot selling Miniature Plastic Planetary Gear Small Module Precision Plastic Gear worm and wheel gearChina Hot selling Miniature Plastic Planetary Gear Small Module Precision Plastic Gear worm and wheel gear
editor by CX 2024-04-08