China factory Excavator Parts Excavator Gear 11213989 Voe14547279 Sun Gear for CZPT LG Excavator Ec290c Ec290b Ec300d spiral bevel gear

Product Description

Detailed Photos

Construction Machines Excavator Parts Sun Gear VOE14547279 For EC290C EC3
Related Parts Excavator Spare Parts
Packing Standard Export Packing
MOQ 1 Piece
Applicable Industries Machinery Repair Shops, Retail, Construction works
Supply Ability 1
Part name gear
Applicable machine EC290C EC290B EC300D

Other products

1.More than 10 years experience in excavator spare parts field;
2.We are experts in CHINAMFG excavator parts and have in this industry since 2571
3.Original parts from suppliers with ensured and high quality;
4.Large range of spare parts scope for excavators;
5.Have parts in stock and give you short lead time;
6.Reasonable and competitive price;

Company Profile     
     HangZhou Junchi construction machinery Co., Ltd. is located in HangZhou logistics capital of China. We are a dealer specialized in excavator accessories, excavator parts genuine accessories one-stop shopping center. We provide all types of Volvo/LG/PC excavator spare parts for all kinds of excavator models. 
     It is convenient for you to buy all parts for Volvo/LG/PC excavators together.
    JUNCHI is our own brand, which integrates our industry experience over the years to provide you with products with better prices and higher quality. We are committed to meeting all your needs for excavator parts and providing you with the most perfect excavator parts solution. Use the best quality and the most competitive price to obtain long-term cooperation with customers.
    We sincerely hope to cooperate with all people around the world and welcome your visit to our company, In the meanwhile, we believe that through our continuous perfecting service system and technique, you can possess the world’s best products with the world’s first – class service!

About Us

Our Warehouse

Packing and shipment
Our Advantage:
1  We have many highly qualified engineers and sale managers, with wide and specific knowledge in the sale, and repair of construction machines, the sales team prides itself on its knowledge of heavy machinery coupled with exemplary after sales service .
2  We have our transfer warehouse for all the spare parts, the warehouse is about 2000 square meter, hold about USD5,000,000.00 spare parts anytime.
3  we have high-efficient logistics operation system,which ensure shipment is on time and right.
4  our product is all over the world.
5  we hope create the future together with every Volvo/LG/PC machine customers.

1.If I only know the excavator model, but can not offer parts No., what should I do ?
 If possible, you can provide pictures of old products, nameplate or size of the parts.
2.How can I pay the order?
We can receive payment through T/T, L/C, Western Union.
3.When will get the items after I place order?
Once we receive your payment, we will deliver the goods within 24 hours; if not in stock , we will communicate with you before placing orders.
4.How can I do if there is something wrong with the items?
First of all ,we can assure the  quality of our products ,if you really found something wrong ,pls provide pictures for us and we will check.  After it is confirmed, pls return to us , we will offer the correct item.
5.What is your main products ?
We are specialized in excavator spare parts, such as engines/or parts, undercarriage parts, electronic parts, hydraulic parts , covering parts, attachments and so on.  If you need other excavator parts, we also can supply as your requirements


After-sales Service: Online Support
Warranty: 6 Months
Type: Bearing
Application: Excavator
Certification: CE, ISO9001: 2000
Condition: New
US$ 61/Piece
1 Piece(Min.Order)

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Customized Request

sun gear

Can you describe the interaction between sun gears and planet gears?

The interaction between sun gears and planet gears is a fundamental aspect of gear systems. Let’s delve into the details of this interaction:

  • Planetary Gear Systems:

The interaction between sun gears and planet gears primarily occurs in planetary gear systems. These systems consist of multiple planet gears that rotate around a central sun gear while meshing with an outer ring gear. This arrangement allows for various mechanical advantages and functionalities.

  • Power Transmission:

The sun gear serves as the primary driver in a planetary gear system. When power is applied to the sun gear, it transmits rotational force to the planet gears. The planet gears, due to their meshing with both the sun gear and the ring gear, distribute the transmitted power evenly across all the gears.

As the sun gear rotates, the planet gears rotate in the opposite direction around the sun gear while also rotating around their own axes. This rotational movement of the planet gears, driven by the sun gear, plays a crucial role in power transmission within the gear system.

  • Speed and Torque Ratios:

The interaction between the sun gear and planet gears affects the speed and torque ratios in a gear system. By choosing different sizes for the sun gear and planet gears, engineers can manipulate the gear ratios to achieve specific outcomes.

When the sun gear is larger than the planet gears, it results in a higher speed ratio. In this case, the sun gear rotates faster than the planet gears, leading to an output shaft or ring gear with increased rotational speed relative to the input shaft or sun gear.

Conversely, when the sun gear is smaller than the planet gears, it leads to a lower speed ratio. In this scenario, the sun gear rotates slower than the planet gears, resulting in an output shaft or ring gear with reduced rotational speed compared to the input shaft or sun gear.

Similarly, the interaction between the sun gear and planet gears affects the torque ratio. When the sun gear is larger than the planet gears, it amplifies the torque, resulting in higher output torque relative to the input torque. Conversely, when the sun gear is smaller, it reduces the torque, resulting in lower output torque compared to the input torque.

  • Direction Reversal:

The interaction between the sun gear and planet gears also enables torque direction reversal in planetary gear systems. When the sun gear rotates in a specific direction, it imparts torque to the planet gears, causing them to rotate in the opposite direction around the sun gear.

This counterclockwise rotation of the planet gears, as driven by the sun gear, leads to the ring gear rotating in the opposite direction. By reversing the direction of the sun gear’s rotation, the torque direction can be reversed once again. This ability to change torque direction makes planetary gear systems versatile and applicable in various mechanical and automotive applications.

  • Mechanical Advantages:

The interaction between sun gears and planet gears offers several mechanical advantages. The distribution of torque across multiple planet gears allows for increased load-bearing capacity and improved system reliability. As each planet gear shares the load, the overall stress on individual gears is reduced, enhancing the system’s durability.

Moreover, the arrangement of sun gears and planet gears in a planetary gear system results in compact designs and high power density. The distributed power transmission and torque-sharing characteristics enable the system to handle higher loads while occupying minimal space.

In summary, the interaction between sun gears and planet gears in planetary gear systems is crucial for power transmission, achieving speed and torque ratios, enabling torque direction reversal, and providing mechanical advantages such as load distribution and compact designs. Understanding this interaction is essential for designing and optimizing gear systems in various applications.

sun gear

Can sun gears be used in high-torque applications?

Sun gears can indeed be used in high-torque applications and are commonly employed in various mechanical systems that require substantial torque transmission. The design and characteristics of sun gears make them capable of handling significant torque loads. Here’s an explanation of why sun gears can be used in high-torque applications:

  • Central Positioning: Sun gears are typically located at the center of planetary gear arrangements. This central positioning allows them to distribute torque to multiple planet gears, which then transfer the torque to the outer ring gear. The central position of the sun gear enables efficient torque transmission and load sharing among the gears, making it suitable for handling high-torque applications.
  • Torque Amplification: The arrangement of sun gears in a planetary gear system allows for torque amplification. By utilizing the interaction between the sun gear, planet gears, and ring gear, the gear system can multiply or reduce torque based on the gear ratio configuration. In high-torque applications, this torque amplification capability of sun gears is advantageous as it allows for the multiplication of input torque, resulting in higher torque output.
  • Sturdy Construction: Sun gears are designed to withstand high torque forces. They are usually made from durable materials such as hardened steel or other alloys with high tensile strength. This robust construction ensures that sun gears can effectively handle the transmitted torque without experiencing excessive wear or deformation.
  • Load Distribution: The interaction between the sun gear, planet gears, and ring gear in a planetary gear system enables effective load distribution. By distributing the torque across multiple planet gears, the load is shared, reducing the stress on individual gears. This load distribution mechanism enhances the overall durability and torque-handling capacity of the gear system, making it suitable for high-torque applications.
  • Customizable Gear Ratios: Sun gears in planetary systems allow for the customization of gear ratios. By changing the number of teeth on the sun gear, planet gears, and ring gear, as well as their relative sizes, the gear ratio can be tailored to meet specific application requirements. This flexibility in gear ratio control enables the optimization of torque output for high-torque applications.

In summary, sun gears can be effectively used in high-torque applications due to their central positioning, torque amplification capability, sturdy construction, load distribution mechanism, and customizable gear ratios. These characteristics make sun gears reliable and suitable for transmitting substantial torque in various mechanical systems.

sun gear

How does a sun gear differ from other types of gears?

A sun gear has distinct characteristics that set it apart from other types of gears. While gears serve various purposes in mechanical systems, understanding the specific features of a sun gear can help differentiate it from other gear types. Here’s an explanation of how a sun gear differs from other gears:

  • Central Position: Unlike many other gears that are located on the periphery of a gear system, a sun gear is positioned at the center of a planetary gear arrangement. It serves as a central driver within the system, transmitting torque to other gears.
  • Engagement with Planet Gears: A defining feature of a sun gear is its engagement with multiple planet gears. These planet gears surround the sun gear and mesh with both the sun gear and an outer ring gear. The interaction between the sun gear and the planet gears allows for the transfer of torque and power distribution within the gear system.
  • Gear System Configuration: Sun gears are commonly found in planetary gear systems, where they function as a central component. Planetary gear systems consist of a sun gear, planet gears, and an outer ring gear. The arrangement and interaction of these gears enable various gear ratios, torque multiplication, and directional control.
  • Power Input: In a planetary gear system, the sun gear typically receives power input from an external source, such as an engine or motor. It serves as the primary driving element that initiates torque transmission and power distribution within the system.
  • Role in Gear Ratio: The sun gear’s size, number of teeth, and its interaction with the planet gears and ring gear determine the overall gear ratio. By altering the sizes and arrangements of these gears, manufacturers can achieve different speed and torque combinations, providing versatility in gear system applications.

While a sun gear has its unique characteristics, it is essential to note that gears come in various types and configurations, each serving specific purposes in mechanical systems. Different types of gears include spur gears, helical gears, bevel gears, worm gears, and more. Each type has its own design, tooth profile, and applications, catering to different needs such as speed reduction, torque multiplication, directional control, or noise reduction.

In summary, a sun gear differentiates itself through its central positioning, engagement with planet gears, configuration in planetary gear systems, role as a power input element, and influence on gear ratio. Understanding these distinctions helps in recognizing the specific functions and applications of sun gears within mechanical systems.

China factory Excavator Parts Excavator Gear 11213989 Voe14547279 Sun Gear for CZPT LG Excavator Ec290c Ec290b Ec300d spiral bevel gearChina factory Excavator Parts Excavator Gear 11213989 Voe14547279 Sun Gear for CZPT LG Excavator Ec290c Ec290b Ec300d spiral bevel gear
editor by CX 2023-10-25