20M Telescopic Arm For Liugong 939 – Premium Customization & Fast Delivery
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Product Description-------Excavator Telescopic Boom
What is an excavator telescopic arm?
An excavator telescopic arm is primarily composed of a fixed body, a sliding body, a steel wire rope, and a telescopic cylinder. By adjusting the number of sliding bodies, it provides an optimal working radius and vertical excavation range. Typically paired with a bucket, this tool is effective for deep excavation tasks such as digging up soil, sand, or coal.
Three-section Telescopic Arm
* Centralized lubrication
* Adopt 30mm main rope, Adopt 26mm auxiliary rope
* Can design to match bucket and grabber
* The upgraded auxiliary rope design makes the pipeline smoother while stretching
* The external hose pulley separates the hose from the main rope, avoids the friction between the main rope and the hose, reduces failures, and makes maintenance more convenient


Advantages of telescopic arms:
1.The three-section telescopic boom is made of BS900E, and Q355B, which is lighter and more durable.
2. We use 6mm thickness.
3. The slider is made of nylon and the pulley is made of steel.All hoses are centrally lubricated.
4. The external hose pulley of the bucket cylinder is more convenient for hose replacement and repair.
5. The external hose pulley separates the hose from the main rope.Avoid friction between the main rope and the hose, reduce failures.
6. The double rope design ensures the safety of the telescopic arm. Even if the main rope is broken, the arm will not stretch.
Some common size references
Excavator (ton) | Excavator (ton) | Effective Length (mm) | Bucket Capacity (cbm) |
6-10 | 10000 | 7600 | 0.2-0.3 |
11-15 | 14000 | 10500 | 0.4-0.6 |
20-30 | 16000 | 12500 | 0.8-1.5 |
30-35 | 20000 | 15500 | 1.3-1.66 |
30-35 | 25000 | 20500 | 1-1.4 |
40-45 | 25000 | 20500 | 1.8-2.5 |
40-45 | 30000 | 24100 | 1.4-2 |
Configuration includes: Clamshell bucket 1pc , 2pcs Pin, Bidirectional foot switch 1pc


Our designs enable the versatile use of both digging and grab buckets.
The first option is the clamshell bucket, which is commonly used for deep excavation projects like subway construction.
Next, we have the grab bucket, which, in contrast to the clamshell bucket, is more powerful and capable of grasping materials like stone.
Finally, there’s the standard bucket, specifically designed for use with telescopic booms, requiring custom design modifications.
Some pictures of excavator telescopic arm


Kaiping Zhonghe Machinery Manufacturing Co., Ltd
Kaiping Zhonghe Machinery Manufacturing Co., Ltd. Is located in Kaiping City ,Guangdong ,The company is committed to the independent research and development, production of various brands of excavator extension arm, demolition arm, standard arm as well as excavating bucket, grasping wood, and other front-end excavator work devices, is a market at home and abroad and strong comprehensive strength of enterprises
Our company can design, produce and refit the extension arm of various brands of excavators (extension arm and extension bar);Through the professional computer aided design system, advanced various processing equipment, skilled staff operation skills and practical knowledge experience;From the aspects of stress analysis, material selection, technology and technology, design and manufacture, the product quality stability is guaranteed step by step.It can also be tailored to your needs.
FAQ
1. Do you offer warranties on your Telescopic Booms?
Yes, we provide a warranty on all our Excavator Telescopic Booms. The warranty covers manufacturing defects and ensures that you receive a product free of any defects. Please contact us for specific warranty details.
2. Can I install the Telescopic Boom myself, or do I need professional assistance?
While the Telescopic Boom is designed to be easily installed on most excavators, we recommend professional installation to ensure safety and optimal performance. Our team can assist with installation if needed.
3. Do you offer after-sales support for your Telescopic Booms?
Yes, we provide comprehensive after-sales support, including troubleshooting, maintenance tips, and replacement parts. Our goal is to ensure your Excavator Telescopic Boom continues to perform efficiently throughout its lifespan.
4. What is the price range for an Excavator Telescopic Boom?
The price for a Telescopic Boom depends on factors such as the size, customizations, and your specific excavator model. Please contact us for a tailored quote based on your requirements.
Contact Sophia:
Whatsapp/Tel: +86 18127591702 E-mail: sophia@excavatorboomarm.com