OEM Planetary carrier

  • Planetary carrier

Planetary carrier


Spur and Helical


100mm to 800mm


150mm to 1200mm


Ra 0.8μm

Type of Finishing

Machining, Gear Hobbing

Number of Planet Gear Slots

3 to 8 slots


DIN 7 machining; DIN 6 gear hobbing with precision control


Alloy Steel, Carbon Steel, Cast Iron


Planetary gear systems in automotive transmissions, industrial machinery, power generation equipment, and more.

Key Features

High load-bearing capacity, precise gear engagement, and excellent torque transmission efficiency.


Customization options available for specific requirements

  • The planetary carrier is a crucial component of a planetary gearbox. It is a central part that holds the planet gears and connects them to the output shaft. The planetary carrier rotates around the central sun gear while the planet gears engage with both the sun gear and the ring gear.
    The design and construction of the planetary carrier are critical to the overall functionality and efficiency of the planetary gearbox. It must be durable, precisely machined, and capable of withstanding the loads and stresses encountered during operation.
    At Prior, we prioritize the production of high-quality planetary carriers. Our team of skilled engineers and technicians ensures that each planetary carrier is meticulously designed and manufactured to meet stringent quality standards. We utilize advanced machining techniques and quality control processes to guarantee the reliability and performance of our planetary carriers.
    Partner with us for exceptional planetary carriers that contribute to the smooth and efficient operation of your planetary gearbox.

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With years of experience collaborating with exceptional enterprises like SANY and XCMG, Prior possesses the expertise to adeptly navigate every facet of the gear manufacturing process. From design inception to final delivery, we are unwavering in our commitment to fulfill your requirements and surpass your expectations at every stage of the journey.


EMAIL :   [email protected]

PHONE : +86 132 1205 7936

ADDRESS : No.1-3 Quanli Road, Feicheng Economic Area, Taian City, Shandong Province, China

Processing and Forming:
Extrusion Forming
CNC Machining
Gear Machining and Finishing:
Gear Grinding
Gear Rolling
Surface Grinding
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CNC Turning
CNC Mills & Machining Centers
Deburring Equipment
Drilling Machines
Gear Cutting Machines
Grinding Machines
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As a prominent OEM gear manufacturer committed to high-volume production, Prior thrives by nurturing a culture of ongoing innovation. Our emphasis on achieving superior quality and improved material utilization, along with cost and time savings for our clients, is exemplified by our adoption of advanced techniques like extrusion. 
Our extensive range of products includes speed reducer gears, oil gear pump gears, and gears for the construction, road transportation, mining, and agriculture industries. We have the capacity to produce over 300,000 gears monthly, including sun gears, planetary gears, ring gears, planet shafts, oil seal seats, oil pump gears, and other components
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At Prior, we offer a comprehensive range of gear engineering services to ensure precise and high-quality gear manufacturing.
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  • 2009

    Be established in

  • 3 million

    Annual output(pieces)

  • 60 +million

    Annual sales


Towards a better future with firm steps

  • 2009:

    Founded in Jinan, Shandong, China. Began small-scale automotive parts and components production and sales.

  • 2016:

    Production scale expanded and began supporting Pengxiang Automobile.

  • 2019:

    Built a new factory in Feicheng City, Tai'an City, and rebranded as Prior Gear

  • 2020:

    Provided support to Liuzhou Fangsheng Axle, China National Heavy Duty Truck Group, and developed new techniques for precision gear manufacturing and precision gear ring manufacturing.

  • 2021:

    Provided support to XCMG and Hande Axle. 

  • 2022:

    Awarded the title of high-tech enterprise in Tai'an City. Achieved sales revenue of 60 million yuan.


Provide you with the latest enterprise and industry news

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Relevant Knowledge Expansion

The planetary carrier is an important component of the planetary gear transmission system, mainly used to support the planetary gears and transmit power. Planetary frames are usually made of high-strength materials, such as alloy steel or stainless steel, and undergo heat treatment and precision machining to ensure sufficient strength and stiffness.
In planetary gear transmission systems, the main functions of planetary carriers include supporting planetary gears, transmitting torque, and bearing loads. The planetary gear can rotate freely through the support of the planetary carrier, while the planetary carrier transmits torque from the input shaft to the planetary gear, and then to the output shaft through the planetary gear. In addition, the planetary carrier also bears the loads transmitted by the planetary gears, including radial and axial loads.

Will excessive friction of planetary carrier cause energy loss and heat generation?
Yes, excessive friction on the planetary carrier can lead to energy loss and heating. In planetary gear transmission systems, friction between the planetary carrier and planetary gears is inevitable, but excessive friction can lead to energy loss and heat generation.
The causes of excessive friction on the planetary carrier may include poor lubrication, damaged bearings, improper installation, or overload operation. When the friction between the planetary carrier and planetary gear is too high, more energy is consumed, additional heat is generated, and the temperature of the planetary carrier and planetary gear increases.
This excessive friction not only leads to energy loss and heating, but also causes wear on the planetary carrier and planetary gears, reducing their service life. If there is excessive friction for a long time, it may also cause metal fatigue and mechanical failure, affecting the stability and reliability of the entire transmission system.
To reduce the possibility of excessive friction on the planetary carrier, it is necessary to maintain good lubrication, regularly check the quality and oil level of the lubricating oil, and ensure the normal operation of the bearings. At the same time, the planetary carrier and planetary gear should be installed correctly to ensure the accuracy of their position and clearance. In addition, overload operation should be avoided, and planetary gear transmission systems should be selected and used reasonably to reduce wear and friction.
In summary, excessive friction on the planetary carrier can lead to energy loss and heating, therefore corresponding measures should be taken to reduce friction, maintain appropriate lubrication, and correctly install and use the planetary gear transmission system. This can improve transmission efficiency, reduce energy loss and heating problems, and extend the service life of planetary carriers and planetary gears.