Product Description
Excavator Long Reach Boom And Arm
(1)Product:
(2)Working Dimension:
| Excavator tonnage | T | 20-25t | 30-36T | 40-47T | ||||||
| Total length | mm | 15200 | 18000 | 18000 | 20000 | 22000 | 20000 | 22000 | 24000 | |
| Max CHINAMFG radius | mm | 15000 | 17300 | 17300 | 19200 | 21000 | 19200 | 21000 | 23000 | |
| Max cut depth | mm | 10300 | 12500 | 12600 | 14500 | 16000 | 14500 | 16000 | 17000 | |
| Max cut depth vertically | mm | 9500 | 11600 | 11700 | 13600 | 15200 | 13600 | 15200 | 16200 | |
| Max cut height | mm | 12600 | 15300 | 15300 | 17300 | 18500 | 16200 | 17500 | 18750 | |
| Max unloading height | mm | 10300 | 13000 | 13000 | 15000 | 16000 | 14000 | 15000 | 16000 | |
| Min rotate radius | mm | 4750 | 5100 | 5100 | 6200 | 6200 | 6200 | 7750 | 7750 | |
| Boom length | mm | 9100 | 10500 | 10500 | 11500 | 12500 | 11500 | 12500 | 13350 | |
| Stick length | mm | 6100 | 7500 | 7500 | 8500 | 9500 | 8500 | 9500 | 10650 | |
| Stick max cut force(ISO) | KN | 83 | 65 | 118 | 95 | 80 | 170 | 139 | 109 | |
| Bucket max cut force(ISO) | KN | 150 | 99 | 153 | 153 | 153 | 153 | 153 | 153 | |
| Bucket capacity | m3 | 0.5 | 0.4 | 1.2 | 0.7 | 0.5 | 1 | 0.8 | 0.7 | |
| Bucket rotate degree | deg | 170 | 170 | 170 | 170 | 170 | 170 | 170 | 170 | |
| Folding length | mm | 13000 | 14500 | 15000 | 16000 | 17000 | 16000 | 17000 | 18000 | |
| Folding heigtht | mm | 3050 | 3100 | 3300 | 3350 | 3400 | 3450 | 3480 | 3500 | |
| Extra Counter weight | T | 1 | 3.5 | 4 | 5 | 6 | 5 | 6 | 8 | |
(3)Features:
1.Material
- )The material used in the excavator long arm is Q355B
- )If other steel is required, please contact us, Q690D customized service
2.Material processing
Use a plasma cutter to ensure part flatness
3.Internal vie
Spaced by vertical and horizontal reinforcement plate at regular interval
4.Product making
Welding
A.) Welded with mixed gas between argon and carbon dioxide. Argon content:80%.Carbon dioxide content:20%.
B.) Welded by auto-welding machine .
Sandblasting
A.) The surface of the workpiece can obtain a certain degree of cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved, thus improving the fatigue resistance of the workpiece, increasing the adhesion between it and the coating, and prolonging the coating film. Durability, also good for paint leveling and decoration.
5.Product packaging and Shipping
6.Company Services
1, Long reach boom are use for dredging rivers port construction, railway construction and groundwork construction, with high extensive operation scope, high efficiency and high security.
2, Our company was founded in 2008 with more than 10 years of experience, production line engineers have more than 10 years of data and experience for all brands of excavators designed and customized long range booms.
3, Applicable for all the excavator model,OEM service is also available.
4, Advanced manufacturing process, Technique is in the line with global standards.
5, We have all the installation dimensions of most excavator, we can customize this long reach boom for your excavator.
6, Before welding, we have use big edge milling machine mill(taper process) the edge of the sheet. So the welding can go to the internal of the steel-sheet and make the structure have higher performance. Also the inside have strength plate make it more stronger.
7, If necessary, extra pipeline can be added to suit to some extra application.
8, Stick cylinder of the long boom, can use your original stick cylinder to save the cost, if you need the stick cylinder, we also can prepare for you.
9, Some parts can be consolidated using thicker plate or overlapping another plate for heavy-duty application.
10, Welding is protective-gas welding, the protective gas is 80% Argon and 20% CO2 mixed. This is CHINAMFG standard for protective gas.
11, Before welding, we have use big edge milling machine mill the edge of the sheet. So the welding can go to the internal of the steel-sheet and make the structure have higher performance.
12 .We can customize the arm for all kinds of excavator as per your request. Just let me know your request.
13. If you need, some parts can be consolidated using thicker plate or overlapping another plate for heavy-duty application, just let me know.
14. Not make the bucket for this extender arm as customer request. But if you need us prepare the bucket for you, that’s ok.
| MODEL | LDB120 | LDB200-1 | LDB200-2 | LDB300 | LDB350-1 | LDB350-2 | LDB450 |
| boom length(mm) | 7100 | 8220 | 10000 | 10000 | 11000 | 12000 | 13000 |
| arm length ( mm) | 5900 | 7160 | 8000 | 8000 | 9000 | 10000 | 11000 |
| Weight(kg) | 3000 | 4000 | 4200 | 5200 | 6000 | 6500 | 7000 |
| Max dig depth(mm) | 9000 | 11340 | 12200 | 12200 | 14500 | 16100 | 18000 |
| Max. extensive scope(mm) | 12500 | 15100 | 17600 | 17600 | 19600 | 21600 | 23600 |
| Max. dig height(mm) | 11300 | 12510 | 13500 | 13720 | 14920 | 16100 | 17300 |
| folding height(mm) | 2900 | 2980 | 3040 | 3210 | 3210 | 3400 | 3400 |
| bucket capacity(m3) | 0.3 | 0.5 | 0.4 | 0.4 | 0.5 | 0.6 | 0.6 |
| Suit Excavator tonnage(ton) | 12 | 20 | 20 | 30 | 35 | 35 | 45 |
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| Warranty: | 180 Day |
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| Application: | Excavator |
| Certification: | ISO9001: 2015 |
| Customization: | Available |
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| Shipping Cost: Estimated freight per unit. | about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Can boom cylinders be used in both mobile and stationary machinery?
Yes, boom cylinders can be used in both mobile and stationary machinery. Here’s a detailed explanation:
Boom cylinders are versatile hydraulic components that are utilized in various types of machinery across different industries. They can be effectively employed in both mobile and stationary equipment. Here’s how boom cylinders are utilized in each type:
- Mobile Machinery: Boom cylinders are commonly used in mobile machinery, such as excavators, loaders, cranes, and aerial work platforms. In these applications, boom cylinders enable the movement and control of booms, arms, or attachments. They provide the necessary force to lift, extend, retract, and rotate the equipment’s components, allowing for efficient operation in various work environments. The ability to adjust the stroke length, variable force control, and integration with hydraulic control systems make boom cylinders ideal for mobile machinery, as they enable precise and controlled movement.
- Stationary Machinery: Boom cylinders are also utilized in stationary machinery, including industrial presses, material handling equipment, and hydraulic presses. In these applications, boom cylinders are used to exert force for pressing, pushing, or lifting tasks. They enable controlled and precise movement of the machinery’s components, ensuring accurate positioning and efficient operation. Boom cylinders can be customized to meet the specific requirements of stationary machinery, such as stroke length, force capacity, and mounting options.
The versatility of boom cylinders makes them suitable for a wide range of applications in both mobile and stationary machinery. The design flexibility and adjustability of boom cylinders allow for customization and adaptation to different equipment types and operational needs. Whether it’s mobile machinery that requires agile and precise movement or stationary machinery that demands controlled force application, boom cylinders provide the necessary hydraulic power to achieve efficient and effective operation.
It’s important to note that while boom cylinders can be used in both mobile and stationary machinery, there may be variations in their design, specifications, and mounting methods to suit the specific requirements of each application. Consulting the equipment manufacturer or hydraulic specialists can help ensure the selection and installation of the appropriate boom cylinders for a particular machinery type.

Can boom cylinders be used in forestry equipment for tree handling?
Yes, boom cylinders can be used in forestry equipment for tree handling. Here’s a detailed explanation:
Forestry equipment is specifically designed for various tasks related to the harvesting, processing, and transportation of trees and timber. Boom cylinders play a crucial role in tree handling within forestry equipment. Here’s how boom cylinders are utilized in this context:
- Tree Felling: Boom cylinders are used in tree felling equipment, such as feller-bunchers or harvesters. They provide the necessary hydraulic force to control the cutting head or cutting arm, allowing operators to fell trees with precision and control. Boom cylinders enable smooth and controlled movement during the tree felling process.
- Tree Loading and Unloading: In forestry equipment used for log loading and unloading, such as log loaders or skidders, boom cylinders are employed to handle the trees. They enable the lifting, lowering, and positioning of logs or tree stems for loading onto trucks or transporting within the logging site. Boom cylinders provide the necessary force and controlled movement for efficient tree handling.
- Tree Processing: Forestry equipment used for tree processing, such as delimbers or debarkers, utilize boom cylinders to manipulate the trees during the processing operations. Boom cylinders facilitate the controlled movement, positioning, and rotation of the trees, allowing for efficient and precise processing.
- Attachment Control: Boom cylinders are also used to control various attachments in forestry equipment. For example, grapples or clamps used for tree handling can be actuated by boom cylinders. This enables secure gripping, lifting, and manipulation of trees, enhancing the efficiency and safety of tree handling operations.
The use of boom cylinders in forestry equipment for tree handling offers several benefits:
- Precise Control: Boom cylinders provide operators with precise control over the movement and positioning of trees. This precision allows for accurate felling, loading, unloading, and processing of trees, minimizing waste and optimizing productivity.
- Efficient Tree Handling: Boom cylinders enable efficient tree handling by providing the necessary force to lift and manipulate trees of various sizes and weights. The controlled movement and positioning facilitated by boom cylinders streamline the workflow and reduce manual effort, improving overall productivity.
- Operator Safety: Boom cylinders contribute to operator safety during tree handling operations. The controlled movement and stability provided by boom cylinders minimize the risk of accidents or injuries caused by uncontrolled tree movement or sudden shifts in load.
- Adaptability: Boom cylinders can be customized to match the specific requirements of different forestry equipment and tree handling tasks. This adaptability allows for versatility in tree handling, accommodating various tree species, sizes, and terrain conditions.
Overall, boom cylinders are valuable components in forestry equipment for tree handling. They enable precise control, efficient tree manipulation, operator safety, and adaptability to various tree handling tasks in the forestry industry.
It’s important to consult the equipment manufacturer’s guidelines and recommendations to ensure the proper selection, installation, and maintenance of boom cylinders in forestry equipment.

Can you explain the role of hydraulic fluid in a boom cylinder?
Hydraulic fluid plays a crucial role in the operation of a boom cylinder in heavy machinery. Here’s a detailed explanation of its role:
- Transmission of Power: Hydraulic fluid is the medium through which power is transmitted in a boom cylinder. When hydraulic fluid is supplied under pressure to one side of the cylinder, it exerts force on the piston, causing it to move. This movement is then transferred to the boom, enabling its extension, retraction, lifting, or lowering. The ability of hydraulic fluid to transmit power efficiently allows for smooth and controlled operation of the boom cylinder.
- Force Generation: Hydraulic fluid is responsible for generating the force required to move the boom. The pressure applied to the hydraulic fluid creates a force that acts on the piston, creating a pushing or pulling action. This force is then transmitted to the boom through the piston and rod, allowing for the desired movement. The force generated by the hydraulic fluid depends on the pressure applied and the effective area of the piston.
- Control of Movement: Hydraulic fluid enables precise control of the boom cylinder’s movement. By regulating the flow and pressure of the hydraulic fluid, operators can control the speed, direction, and extent of the boom’s extension, retraction, lifting, or lowering. This control allows for accurate positioning of the boom, precise load handling, and safe operation of the heavy machinery.
- Heat Dissipation: Hydraulic fluid also plays a role in dissipating heat generated during the operation of the boom cylinder. As hydraulic fluid flows through the system, it absorbs heat from the hydraulic components and transfers it to the reservoir or other heat dissipation mechanisms. Adequate heat dissipation prevents the hydraulic fluid from overheating, which could lead to a loss of performance or damage to the components.
- Lubrication and Seal Protection: Hydraulic fluid provides lubrication to the moving components within the boom cylinder, such as the piston, rod, and seals. This lubrication minimizes friction and wear, ensuring smooth and efficient operation of the cylinder. Additionally, hydraulic fluid helps protect the seals from drying out or being damaged by contaminants, maintaining the integrity of the cylinder and preventing fluid leakage.
- System Stability and Safety: The proper selection and maintenance of hydraulic fluid contribute to the stability and safety of the boom cylinder system. Using the recommended hydraulic fluid with the appropriate viscosity and additives ensures optimal performance and protects the system from wear, corrosion, and fluid breakdown. Regular monitoring and maintenance of the hydraulic fluid help identify potential issues, such as contamination or degradation, and prevent system failures or malfunctions.
In summary, hydraulic fluid plays a vital role in a boom cylinder by transmitting power, generating force, controlling movement, dissipating heat, providing lubrication and seal protection, and contributing to system stability and safety. Its properties and effective utilization are essential for the efficient and reliable operation of the boom cylinder in heavy machinery.


editor by CX 2024-03-26