Two Section 40-47T Excavator Stick Extension Long Reach
18 Meters with Bucket Excavator Dipper Arm
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Product Presentation of Excavator Boom
Enhanced Excavator Boom Design for Heavy-Duty Applications
The excavator’s boom is constructed from high-strength Q355B steel, ensuring optimal durability and structural rigidity. For the extension arm sleeve, 45# steel is used as the base material, reinforced with a 40Cr bushing lining to enhance wear resistance.
To minimize shear stress caused by the frequent rotation of the shaft and sleeve, lubrication (butter grease) is applied, significantly extending the sleeve’s service life.
A key feature of this design is the extension arm positioned between the body support and the working arm. This component is hydraulically driven by dedicated oil cylinders, working in tandem with the bucket cylinder to maximize operational efficiency.
The system is equipped with dual control interfaces (inside and outside the cockpit), with each hydraulic cylinder set operating independently for precise maneuverability.
Ideal Applications:
This innovation represents a major advancement in mining machinery, delivering superior performance and long-term reliability in demanding environments.
| Material Use |
Q345B, Q550D, Also can customize to customer requirements |
| Product Warranty Period |
6 months,9 months,1 Year |
| Product Size |
Most lengths can be 34M, According to customer requirements, Any excavator model |
Advantages of Zhonghe Excavator Long Arm
1. Less maintenance
Using high quality materials, such as Q355B as default, Q690D optional, Niningbo connectors, seamless precision pipelines, graphite alloy copper sleeve, and strong but light bucket cylinder.
2. Strong and sturdy
Built-in reinforcing ribs. Professional welding skills towards the different bearing positions. Groove preparation(45° edge-mining) before welding.
3. Tolerance within 5-10um
Hole drilling tolerance is within 5-10um, ensure accuracy.
4. Reach deeper and higher
The max work range and the max digging height are larger as the angle of the boom and arm can reach 163 degrees.
5. High work efficiency and saving fuel
Lighter while taking into account the quality, not only ensures work efficiency but also saves fuel.
6. Fillet weld testing
We can determine the quality of a fillet weld joint by performing NDT and mechanical testing. Macro examinations and fillet fracture tests give a good view of the profile, fusion, and penetration, and reveal whether there are any imperfections, such as porosity or inclusions, in the weld. These tests are used to test the welder’s ability to weld a fillet weld.
What Zhonghe Can Do
Customization Options
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Universal Compatibility: Fits all major excavator brands.
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Tailored Solutions: Customize color, length, and material to your specifications.
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Enhanced Functionality: Additional hydraulic pipelines available for specialized applications.
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Complete Packages: Optional supply of boom cylinders and stick cylinders upon request.
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Production Capacity
Customer-Centric Service
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24/7 Online Support: Prompt assistance within 24 hours.
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Expert Technical Guidance: Video consultations with our 10+ years experienced engineers.
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Cost-Efficient Shipping: Multi-piece design for long booms to optimize container space and reduce freight costs.
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Warranty Coverage
All parts you needed are included.
Long Reach Kits Are Fully Compatible with ZHONGHE Excavator Standard Buckets, and Cylinder.
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Excavator long boom
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Excavator long arm
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Standard bucket
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Linkage kit
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Bucket cylinder
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Butter hose
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Pin
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Lubricating system
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Seals
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Specification of Excavator Boom Arm
Weight
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Model
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Part Length
|
Total length(m)
|
Weight(kg)
|
Maximum removal height(m)
|
| Total Length(mm) |
25T |
8.5 |
16 |
2800 |
16M |
| Boom(A)(mm) |
2.3 |
900 |
| Arm(b)(mm) |
5.2 |
1700 |
| Maximum Digger Radius(C)(mm) |
30T |
9.5 |
18 |
3000 |
18M |
| Maximum Digger Depth(C)(mm) |
2.3 |
1000 |
| Maximum Unloading Height(E)(mm) |
5.2 |
1950 |
| Maximum Digger Height(F)(mm) |
35T |
10.5 |
20 |
3500 |
20M |
| Bucket Volume(m³) |
2.3 |
1100 |
Company Strength
Kaiping Zhonghe Machinery Manufacturing Co., Ltd. is a leading integrated manufacturer and supplier specializing in customized excavator boom arms and attachments. With a modern 14,000 m² standardized steel structure workshop and advanced high-precision machining equipment, we combine cutting-edge technology with a highly skilled workforce to deliver superior products.
Our team comprises:
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60+ seasoned technical experts
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30+ certified welders with 7+ years of experience
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15+ senior designers
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A dedicated R&D team driving innovation
With an annual production capacity of 600+ excavator boom arms, we offer high-quality, competitively priced solutions trusted in 40+ countries worldwide.
Guided by our core values—"Excellence in Quality, Integrity in Management, and Commitment to Customer Satisfaction"—we welcome global partners to collaborate and grow with us.
FAQ of excavator long arm
Q1: Why not have boom and stick cylinders in the plan?
A1: First, the whole long arm is lengthening, but the boom just lengthening from its middle sleeve to its end, so the original boom and stick cylinder can be used. Second, using the original parts can save you cost.
Q2: How long is the boom arm can min excavator be configured with? Whether it is necessary to increase the counterweight?
A2. Generally speaking, the 30-40 excavator longest arm suggests to be 8 meters, and can configure 0.1 cbm bucket, with no need for an extra counterweight. 55 excavator's longest arm suggests to be 12 meters, which can configure 0.1-0.15 cbm bucket, which needs 0.5 ton extra counterweight. 60-80 excavator longest arm suggests to be 12 meters, can configure 0.15-0.25 cbm bucket, need 0.5-0.7 ton extra counterweight.
It is not recommended to extend boom arm to longes the t length as mini excavator is easy to slosh.
Q3: How long will it take tall an excavator long reach boom?
It depends on the installer and machine size.
Usually disconnecting the original boom arm, stick cylinder, then pin the new one is okay.
Kindly remind, use to prepare several containers to fill the oil before disassembling.
Whatsapp: +86 18127538971
Email: Katherine@excavatorboomarm.com
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