Long Reach Boom and Arm Assembly for Excavators

In large-scale earthwork, municipal renovation and special terrain construction, standard excavator arms usually have problems such as insufficient operating height, limited horizontal coverage and inability to reach the bottom in deep pit operations, which seriously restrict construction efficiency and even increase additional costs of equipment displacement and secondary operation. 

Our Long Reach Boom and Arm Assembly for Excavators fundamentally solves the operating limitations of standard arms. Through the precisely proportioned extended boom and arm structure, it comprehensively improves the operating radius, excavation depth and operating height of excavators, adapting to various complex and special construction scenarios.

Material and Craftsmanship

High-Strength Structure for Extended Working Conditions

The Long Reach Boom and Arm Assembly for Excavators is manufactured from national standard Q355B high-strength manganese steel. The main stress areas adopt thickened plates and double-layer reinforcement structures to improve resistance against bending, cracking, and deformation during continuous heavy-load operation.

Precision Manufacturing for Reliable Performance

The production process combines CNC cutting, automatic welding, and non-destructive flaw detection to ensure consistent dimensions and stable weld quality. The optimized manufacturing process improves overall structural strength while enhancing wear resistance, impact resistance, and fatigue performance compared with conventional extended arm designs.

Optimized Pin and Bushing System

Key connection components such as pin shafts and bushings undergo heat treatment and precision machining to achieve smooth movement and reduced friction. This design helps lower wear during repeated operation and extends the service life of the assembly.

Product Advantages

Improved Installation Accuracy

Unlike ordinary extended arms produced with simple welding structures, this assembly uses integrated forming and precision processing technology to achieve better structural consistency. Accurate connection dimensions reduce installation difficulties and improve compatibility with different excavator models.

Enhanced Durability for Continuous Operation

The product is designed for frequent and heavy-duty applications. Wear-resistant bushings are added to high-friction areas to reduce problems such as looseness, excessive wear, and unstable operation during long-term use.

Complete Service from Factory to Project Site

As a direct manufacturer, we provide drawing customization, technical communication, and installation guidance services. Each product undergoes load testing, pressure testing, and deformation inspection before delivery to ensure reliable performance for global engineering projects.

Product Specifications

Core Application Scenarios

1. Water Conservancy & River Engineering

Suitable for river and lake dredging, river embankment reinforcement and underwater earthwork excavation; the ultra-long operating radius avoids equipment wading and eliminates potential safety hazards.

2. Municipal Infrastructure Engineering

Applied in urban deep foundation pit excavation, underground pipe network renovation, high-rise building demolition and road slope trimming, solving the problems of limited construction space and insufficient operating range in urban areas.

3. Port & Terminal Engineering

Adaptable to waterway dredging, terminal foundation leveling and offshore earthwork operations, meeting the needs of long-span and long-distance construction.

4. Mine Geotechnical Engineering

Used for mine slope trimming, deep trench excavation and muck transportation; the high-strength structure adapts to heavy-load and harsh working conditions.

Real Customer Cases

Urban River Dredging Project – Batch Supply for Municipal Engineering

In 2025, we supplied 20 sets of 20-ton Long Reach Boom and Arm Assembly for a domestic municipal water conservancy project. The equipment was mainly used for regular urban river dredging operations, helping excavators extend their working range in deep water areas.

After installation, the single machine's daily operating capacity increased by approximately 35%, effectively solving the construction limitations caused by inaccessible river center areas. During the project period, the equipment maintained stable operation without failures, leading to continued bulk cooperation with the customer.

Vietnam Infrastructure Project – Customized Ultra-Long Reach Solution

A Vietnamese infrastructure customer required an 18-meter ultra-long reach arm assembly for 30-ton excavators used in deep foundation pit construction for a high-end residential project. Based on the narrow site conditions and deep excavation requirements, we optimized the arm structure and stress distribution design.

The customized solution enabled the customer to complete deep excavation tasks without replacing larger equipment, reducing equipment rental costs by around 40% and helping the project proceed according to schedule.

Product Advantages Comparison

1. Material Advantage:

Most peers adopt ordinary carbon steel which is easy to deform and crack; our products adopt Q355B manganese steel with thickened reinforcement, high strength and good toughness, suitable for harsh and heavy-load working conditions.

2. Process Advantage

Peers use simple manual welding with rough welds prone to leakage and fracture; we adopt automatic welding + non-destructive flaw detection with precise technology and stronger structural stability.

3. Compatibility Advantage

Peer products have large tolerance and poor installation compatibility; our products are precisely CNC processed with high coaxiality, compatible with all mainstream models without modification.

4. Durability Advantage

Peer products have no wear protection with easy wear and loose pin shafts; our key parts are equipped with wear-resistant bushings and quenched pin shafts, extending service life by more than 50%.

5. Service Advantage

Intermediaries have no customization capability and after-sales service; as a source factory, we support non-standard customization, on-site guidance and lifelong technical consultation.

FAQ

Q1: Does the Long Reach Boom and Arm Assembly for Excavators support non-standard size customization?

A1: Yes. As a source factory, we can customize full-size extended arms from 12 to 28 meters according to customers' construction scenarios, excavator tonnage and operating depth/radius requirements, providing professional drawing design and mechanical optimization solutions to meet various special working condition needs.

Q2: Which excavator brands are compatible with the product? Is the installation complicated?

A2: The product is fully compatible with 12-50 ton excavators of domestic and foreign mainstream brands including Komatsu, Caterpillar, Sany, XCMG, Hitachi and LiuGong. All accessories are precisely aligned before delivery with no drilling or modification required for direct in-situ installation. We provide remote installation guidance for simple and convenient operation.

Q3: What is the product warranty period? How to handle after-sales quality problems?

A3: The whole machine enjoys 12-month official warranty and lifelong maintenance for core structural parts. For non-human-induced quality problems, we provide free accessory replacement and technical maintenance services. Overseas customers can enjoy cross-border after-sales docking and fast logistics replacement services.

Q4: Is there a discount for bulk procurement? What is the delivery cycle?

A4: We support bulk procurement and foreign trade order cooperation with favorable prices for large quantities. Conventional standard models are in stock and delivered in 3-7 days, and non-standard customized models are delivered in 7-15 days, meeting the urgent construction needs of domestic and overseas projects.

Professional Manufacturing Support for Global Projects

Reliable Supply from an Experienced Factory

With 12 years of experience in construction machinery parts manufacturing, our factory provides stable production capacity, standardized workshops, and complete quality inspection processes. We support global customers with reliable equipment supply for different engineering applications.

Customization and Project-Based Service

We provide factory inspection, sample testing, technical communication, and working condition analysis to help customers select suitable solutions. From customized requirements to delivery support, our team offers professional service throughout the cooperation process.

Contact us for product specifications, project solutions, and customized quotation support.