Long Reach Boom & Extended Arm

River heavy industry(RHI) specializes in the design, production and custom-made long-reach arms for various brands of hydraulic excavators.

Jiangsu River Heavy Industry(RHI) stands as a prominent manufacturer and supplier of long-reach arms in China, delivering premium-grade extended arms/sticks renowned for their durability and quality across global markets. Our comprehensive range includes excavator extension arms spanning from 7 tons to 100 tons for crawler excavators, offering extended arm lengths ranging from 7 meters to 30 meters. We prioritize customization to align with the unique specifications and applications of our discerning clientele, ensuring optimal performance and satisfaction.

Application of Extended Arm

The extended arm is a staple in diverse construction applications, including river dredging, port operations, subway construction, and foundation excavation. Renowned for its exceptional efficiency and safety, it excels in a myriad of operations. When the standard arm falls short of reaching extended and deeper digging distances, the River-produced long reach boom emerges as a pivotal solution, enhancing productivity to meet the demands of challenging projects.

Clean Up Waterways and Fish Ponds

Water Resources and Hydropower Engineering

Construction and Subway Excavation

The Advantages of River’s long reach boom

  • Cutting-Edge Manufacturing and Processing Capabilities: As a distinguished Long Reach Boom manufacturer, we boast a comprehensive suite of advanced processing and manufacturing equipment, including laser cutters, plasma cutters, welding robots, and automatic coating lines. This arsenal ensures the precision of our products, guaranteeing both excellence and high production efficiency.
  • Premium-Quality Raw Steel Materials: Our commitment to excellence extends to sourcing raw materials exclusively from China’s top steel manufacturers. The extension arm, crafted from low-alloy high-strength plates with commendable tensile strength, is pivotal for optimizing the efficiency of excavators. Notably, our hydraulic hoses undergo phosphating for superior anti-corrosion and anti-rust properties, safeguarding the hydraulic system from contaminants. The use of copper sleeves on connectors, in place of the commonly used steel sleeve, further underscores our dedication to quality.
  • Advanced Computer-aided Design Tools: Employing state-of-the-art CAD, 3D, and FEA structural design tools, our adept design team provides accurate data analysis for secondary development and personalized customizations. This technological prowess not only facilitates product upgrades but also minimizes production timelines. Addressing concerns of potential cracking and breaking, our innovative designs prioritize the longevity and reliability of our long arms.
  • Stringent Production Processes for Unwavering Quality: At every juncture of the production process, meticulous controls are implemented to guarantee the delivery of products of the highest quality. Our unwavering commitment to strict quality control ensures that our customers receive consistently reliable and top-tier products.

Plasma Cutting

Robot Arm Weiding




Spray Painting

Each Long-reach Package Comes Standard with The Following Items

Long reach front is an excellent solution for river and sea dredging on land or barge, pond excavation and maintenance, deep foundation excavation, drainage construction, distant digging, etc., especially beneficial for slope forming where standard boom failed to get the necessary job done effectively. There is no customized component/part used in our attachment; we design it with commonly available off-the-shelf components that customers can easily obtain from their local excavator spare parts market. Each long-reach package comes standard with the following items:

  • 1x long boom
  • 1x long stick/arm

  • 1x bucket

  • 1x arm cylinder

  • 1x bucket cylinder

  • 1x boom pin

  • 2x arm pin

  • 2x bucket pin

  • 1 set of Linkage

  • 2x pin for Linkage

  • 1 set of hydraulic pressure hoses
  • Full set of hydraulic piping/tubing

Technical Data

Models Extension boom(A) Extension arm(B) Transport height(C) Max. excavation radius(D) Max. unloading height(E) Max. excavation height(F) Max. excavation depth(G) Bucket capacity Working weight Increase in weight
12T 7100mm 5900mm 2900mm 11200mm 7350mm 9350mm 9000mm 0.3m³ 12T 3000kg
20T 8220mm 7160mm 2980mm 14500mm 10390mm 12510mm 11340mm 0.4m³ 12T 4000kg
25T 8220mm 7160mm 3050mm 14500mm 10490mm 12610mm 11370mm 0.4m³ 12T 4200kg
30T 10000mm 8000mm 3210mm 17300mm 11720mm 13920mm 13010mm 0.4m³ 12T 5200kg
35T 11000mm 9000mm 3210mm 19200mm 12920mm 15120mm 15000mm 0.5m³ 12T 6000kg
40T 12000mm 10000mm 3400mm 21100mm 14240mm 16900mm 16500mm 0.6m³ 20T 6500kg
45T 13000mm 11000mm 3400mm 22900mm 15230mm 17800mm 18000mm 0.6m³ 20T 7000kg


Explore quality long-reach booms with special sizes—contact us for customized options tailored to your unique project requirements!

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At RIVER HEAVY INDUSTRY, we prioritize delivering top-notch amphibious excavators and excavator attachments. For inquiries or to discuss your specific needs, kindly fill out the form below. Your satisfaction is our global priority, and we ensure swift responses to clients worldwide. We look forward to connecting with you soon!

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