China Best Sales BN 2050691 Excavator Parts Final Drive Reduction Gearbox Carrier Planetary Gear For H itachi ZX200-3 ZX210 ZX200-3G ZX200-5G hypoid bevel gear

Product Description

BN 205 0571 Excavator Parts Final Drive Reduction Gearbox Carrier Planetary Gear For H itachi ZX200-3 ZX210 ZX200-3G ZX200-5G 

Detailed Photos



Product Description





BN carrier 1st stage Excavator travel device motor Gearbox spare parts


Apply to CZPT ZX200-3 ZX210 ZX200-3G ZX200-5G excavator


205 0571  




571 0571




Construction Machinery Parts, Excavator Spare Parts










1 pc



1. ready to installed in your CZPT ZX200-3 zx200-3G ZX200-5G  excavators. 

3. All components are produced by us.

4. All new, undamaged.

5. Painted or Unpainted, depend on requirement

6. 90 days warranty, call or email with any questions.

7. Plywood Case Packing, free of fumigation

8. Deliver to CZPT by Sea, Air, or Carrier.

Spare parts inside for your selection:

Pos. Part No Qty Parts name
  9233692 [1]   TRAVEL DEVICE
  9261222 [1]   TRAVEL DEVICE
1 9257254 [1]   MOTOR;OIL
1 9258325 [1]   MOTOR;OIL
2 4634693 [1]   SEAL;GROUP
3 4246793 [2]   BRG.;ROL.
4 1033090 [1]   DRUM
5 1033091 [1]   SPROCKET
6 J932055 [18]   BOLT
7 A590920 [18]   WASHER;SPRING
8 3086531 [1]   NUT
10 4436242 [1]   PIN;KNOCK
12 1571875 [1]   CARRIER
13 3084353 [3]   GEAR;PLANETARY
14 4438593 [6]   BRG.;NEEDLE
15 4284521 [6]   PLATE;THRUST
16 4116309 [3]   PIN;SPRING
17 4315838 [3]   PIN
18 3082156 [1]   GEAR;SUN
20 1571787 [1]   GEAR;RING
21 J931640 [24]   BOLT
23 2042432 [1]   CARRIER
24 4401293 [2]   SPACER
25 3082155 [3]   GEAR;PLANETARY
26 4438592 [3]   BRG.;NEEDLE
27 4192982 [6]   PLATE;THRUST
28 4457186 [3]   PIN
29 4192571 [3]   PIN;SPRING
30 3082149 [1]   GEAR;SUN
32 205 0571 [1]   CARRIER
33 3100544 [3]   GEAR;PLANETARY
34 4406589 [3]   BRG.;NEEDLE
35 4192910 [6]   PLATE;THRUST
36 421571 [3]   PIN
37 4173093 [3]   PIN;SPRING
38 205 0571 [1]   SHAFT;PROP.
40 2034833 [1]   COVER
41 4478346 [1]   PIN;STOPPER
42 4699148 [12]   BOLT;SEMS
43 4245797 [3]   PLUG
46   [1]   NAME-PLATE
47 M492564 [2]   SCREW;DRIVE



Company Profile


  1. We are the manufacturer and own 18000 m2 factory areas, good relationship with material suppliers, which make more competitive price and steady quality.
  2. We have more than 80 units advanced facilities for production.
  3. We have 8 senior engineers with more than 30 years experience on designing and machining.
  4. Our sales term offer the efficient service for every customers.
  5. We are the long term parts supplier for many famous companies, such as FOSTER WHEELER POWER MACHINERY CO.,LTD and C.R.Dinly etc.
  6. We develop spare parts for old and new excavator models, and submit our latest products to customers every month so that to meet the market demand.
  7. We have high market share in Oversea market and Domestic market, Southeast Asia 60%, Russia 10%, Middle East 8%, North and South America 10%,Europe 8%, others 4%.



1. Warranty Type: We will replace the product which have quality problem.
2. Warranty Period:
Supply 3 months warranty for the products from the date of arrival. Customer should check the items according to the order list after arrival. Contact with us and offer the data, photos of the problem items.
3. You need to pay for the replacement charge for following condition:
* Wrong Order from customer.
* Natural Disasters cause the damage.
* Error installation.
* The machine and reducer work over time and over load.
* Lost by any condition.
* Xihu (West Lake) Dis.n element destroyed.
* Corrode with rust during stock and running.
* Warranty Expired.
4. Others
They are the product easy to be rust away, please wrap them well. We just supply warranty for the products we are producing, except the Bearing, Seal, and some others we mention before order.If there is any problem about the products, installation or maintenance, please contact with us any time. We reserve the rights of final interpretation.

Packaging & Shipping






T/T, Western Union, Alipay, Paypal


HangZhou Port, negotiation


  1. Stock in hand: 4-7 days for processing and packing
  2. Bulk Production: 10-35 days, depend on the quantity.


By Sea, Air, Carrier


  1. Customers offer the part number, part name, model, quantity, data of items, delivery term.
  2. We quote the best price according to the requirement of customers.
  3. Confirm the purchase order and pay the deposit.
  4. We prepare and pack the goods.
  5. Customers make the payment according to the Proforma Invoice once the goods get ready for delivery.
  6. We delivery the goods with the packing list, commercial invoice, B/L and other documents requested.
  7. Track the transport and arrival about the goods.
  8. Welcome to give us suggestion and feedback once arrival.


Shipping Cost:

Estimated freight per unit.

To be negotiated
Type: Crawler
Application: Excavator
Certification: SGS
US$ 50/Piece
1 Piece(Min.Order)


Order Sample



Customized Request

epicylic gear

What are the advantages of using planetary gears in various mechanical setups?

Planetary gears offer several advantages that make them a popular choice in various mechanical setups. Let’s explore some of these advantages:

  • Compact Size:

One key advantage of planetary gears is their compact size. The arrangement of multiple gears within a single housing allows for a high gear reduction ratio in a relatively small space. This compactness is particularly beneficial in applications where space is limited, such as automotive transmissions, robotics, and aerospace systems.

  • High Torque Density:

Planetary gears provide 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 makes them suitable for applications requiring high torque transmission, such as heavy machinery, industrial equipment, and automotive drivetrains.

  • Efficient Power Transmission:

Planetary gears are known for their efficient power transmission capabilities. The multiple gear engagements and the distribution of load among the gears result in reduced friction and minimal power loss. This efficient power transmission ensures that a substantial portion of the input power is effectively transmitted to the output, leading to improved overall system efficiency.

  • Multiple Gear Ratios:

Another advantage of planetary gears is their ability to achieve multiple gear ratios within a single gear system. By varying the sizes and numbers of teeth on the sun gear, planet gears, and ring gear, different gear ratios can be obtained. This flexibility allows for adapting to various speed and torque requirements without the need for additional gear sets or complex mechanisms.

  • Shock Absorption:

Planetary gears have a natural ability to absorb shock loads and distribute them across multiple gear teeth. The multiple gear engagements and the design characteristics of planetary gears help mitigate shocks and impacts, preventing damage to the gear system and the connected components. This makes them suitable for applications that involve sudden changes in load or intermittent operation.

  • Precise Motion Control:

Due to their design, planetary gears offer precise motion control. The combination of rotational and orbital movements of the planet gears allows for smooth and accurate motion transmission. This feature is particularly useful in applications requiring precise positioning, such as robotics, automation systems, and medical equipment.

In summary, the advantages of using planetary gears in various mechanical setups include compact size, high torque density, efficient power transmission, multiple gear ratios, shock absorption, and precise motion control. These advantages make planetary gears well-suited for a wide range of applications across industries, offering reliability, efficiency, and versatility.

epicylic gear

How do planetary gears contribute to speed reduction and torque amplification?

Planetary gears offer the capability of both speed reduction and torque amplification, making them versatile components in various mechanical systems. Let’s explore how planetary gears achieve these functions:

  • Speed Reduction:

Planetary gears can reduce rotational speed by utilizing their gear arrangement. The key elements involved in speed reduction are the sun gear, planet gears, and ring gear. Consider the following scenarios:

  • Epicyclic Gear Set:

In a basic planetary gear arrangement, when the sun gear is used as the input and the ring gear is fixed, the planet gears rotate on their own axes while also revolving around the sun gear. This configuration causes the output speed to be lower than the input speed. The reduction in speed is determined by the gear ratios between the sun gear, planet gears, and ring gear.

  • Multiple Stages:

Planetary gears can be combined into multiple stages, with each stage having its own set of sun gears, planet gears, and ring gears. By connecting the output of one stage to the input of another, the rotational speed can be further reduced. This allows for greater flexibility in achieving the desired speed reduction in complex mechanical systems.

  • Torque Amplification:

Planetary gears are also capable of amplifying torque, enabling them to handle higher loads and provide increased output torque. The torque amplification occurs in the following scenarios:

  • Epicyclic Gear Set:

When the sun gear is used as the input and the ring gear is the output, the planet gears rotate on their own axes while also revolving around the sun gear. This arrangement allows for torque amplification, meaning the output torque can be higher than the input torque. The specific torque amplification factor depends on the gear ratios and the number of planet gears in the system.

  • Combination of Gear Stages:

By combining multiple stages of planetary gears, torque amplification can be further increased. Each stage contributes to the overall torque amplification, allowing the system to handle even higher loads and transmit greater torque.

In summary, planetary gears contribute to speed reduction by utilizing the gear ratios between the sun gear, planet gears, and ring gear. They achieve torque amplification by utilizing the arrangement of the gears in an epicyclic gear set, as well as through the combination of multiple gear stages. These capabilities make planetary gears valuable in various applications where speed reduction and torque amplification are required, such as automotive transmissions, industrial machinery, and power transmission systems.

epicylic gear

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.

China Best Sales BN 2050691 Excavator Parts Final Drive Reduction Gearbox Carrier Planetary Gear For H itachi ZX200-3 ZX210 ZX200-3G ZX200-5G hypoid bevel gearChina Best Sales BN 2050691 Excavator Parts Final Drive Reduction Gearbox Carrier Planetary Gear For H itachi ZX200-3 ZX210 ZX200-3G ZX200-5G hypoid bevel gear
editor by CX 2023-09-12