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Planetary Gear (Epicyclic Gear)

A planetary gearbox has two distinct parts: a central sun gear and a ring gear with internal teeth that are concentric with the sun gear. They are often used in a variety of applications, including automotive transmissions, off-road motors, and industrial conveying systems.

Planetary Gear for Sale

Planetary gear, also referred to epicyclic gear, is a kind of transmission that makes use of an array of gears in circular meshes in order to transfer motion. This gearing system was specifically designed to decrease the effort of driving and enhance the level of comfort. The planetary gear set are often employed in hybrid vehicles and automatic transmissions. A planetary gearbox is comprised of two distinct components that include an axial sun gear, and a ring with inner teeth which are in concentric on the sun gear. These components are mounted on an earth carrier. A planet differential is set up to allow for unbalanced ratios or multiple input/output configurations. As a planetary gear manufacturer, factory and supplier in China, we have different types of planetary gear sets for sale.

Compound Planetary Gear

Planetary Gear Types

Planetary gears are one type of transmission that divides the burden among at least two gears. This type of system has a great level of stiffness and a homogeneous mass distribution, which means it is very reliable. Planetary gears can also be equipped with the idler. They are commonly employed in the planetary gear set and are typically used in industrial machines.

It is employed to drive different machines due to its efficiency, small size, transmission ratio as well as its an excellent power-to-weight ratio. Different types of planetary gears comprise spur gears and single helical gears as well as herringbone gears. Herringbone gears are planetary and is more powerful in carrying loads and has less axial force. it is often used for heavy equipment.

Epicyclic reduction gear sets are utilized when weight and space are crucial and a significant amount reduced speed is needed. They are commonly employed in construction equipment and tractor models that require large power to propel wheels. They can also be found in electric screwdrivers, electronic transmissions and turbine engines. They are also utilized in industrial, agricultural and forestry applications.

As a rule the planetary gearbox is highly efficient and is able to transmit 97% of power input. Apart from being extremely efficient, it also has the ability to minimize vibration and noise.

Planetary Gear Set Planetary Gear Set


What is a Planetary Gear Used For?

A planetary gear is a gear that transmits torque by sharing the load across multiple gear teeth. The epicyclic gear drive is suitable for applications with frequent changes in direction of rotation, such as those involving fast start-stop cycles. These planetary gears are also known for their high stiffness and low tooth clearance, making them ideal for frequent operations.

Planetary gears are used in many industries, including construction equipment. They are also used in automatic transmissions, electric screwdrivers and turbine engines. These planetary gears can be small enough to fit in tight places, yet large enough to transmit large amounts of torque. They are also suitable for bicycle speed change mechanisms.

The simplest planetary gear set consists of a sun wheel and two or more planetary gears. These epicyclic gears are kept in constant mesh by a common carrier. Ring components and pinions are then attached to the carrier.

Epicyclic Gear

Key Benefits of Planetary Geared Motors

Improved repeatability: Its higher speed radial and axial loads provide reliability and robustness, minimizing gear misalignments. In addition, uniform transmission under different loads and low vibration provide perfect repeatability.

Perfect precision: stability of most rotation angles improves the accuracy and reliability of the movement.

Lower noise level because there is more surface contact. Rolling is much softer and jumps are almost non-existent.

More durability: due to its torsional rigidity and better rollability. To improve this feature, your bearings help to reduce the losses that would be generated by rubbing the shaft directly on the case. As a result, a higher efficiency and smoother operation of the gears is achieved.

Very good efficiency levels: planetary gearboxes offer higher efficiency and, thanks to their design and internal layout, minimize losses during operation. In fact, today, this type of drive mechanism offers higher efficiency.

Increased torque transmission: With more teeth in contact, the mechanism is able to transmit and withstand greater torque. In addition, it does so in a more uniform manner.

Maximum versatility: Its mechanism is contained in a cylindrical gearbox that can be installed in almost any space.

Epicyclic Gear

Additional information



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Materials Available

1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
product materials available

Surface Treatment

Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.

Processing Method

CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
product finishing

QC & Certificate

Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009

Eight reasons to choose us:


1. Perfect service system and after-sale protection.
2. Quality problems will be solved within 24hours.
3. One-to-one customer service tracking processing.
4. Companies carry out the ERP management, improve enterprise fast response.
5. Quality assurance, one year warranty.
6. Supporting professional matched other equipments.
7. The company has more than one product testing units, the implementation of ISO9001: 2015.
8. Unique development and design capabilities to meet the needs of special-purpose equipment manufacturing.


Five Core strengths:


1. The first domestic independent R & D manufacturer and 22 years of professional manufacturing.
2. Casting exquisite, beautiful, practical and durable.
3. Complete specifications, cost-effective and spot supply.
4. Independent research and development, special specifications can be customized.
5. Selected materials, high-tech treatment, up to the international standard test.

Package & Lead Time

Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port


Q: Are you trading company or manufacturer ?
A: Our group consists in 3 factories and 2 abroad sales corporations.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: How long is your delivery time ? What is your terms of payment ?
A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shipment.

Q: What is the exact MOQ or price for your product ?
A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation.