CAT 320用ロングリーチ18m掘削機ブーム

When a standard excavator boom cannot reach the required working area, an extended boom can help reduce machine repositioning and improve access to difficult locations. Our 18m Long Reach Excavator Boom for CAT 320 is designed for deep excavation, river maintenance, slope shaping, and other projects where a longer horizontal reach is needed. At XINGCHUANG, we customize excavator booms according to machine details and job requirements, helping buyers select an attachment suited to their actual working conditions.

An extended boom changes the excavator's working range and load characteristics. Before choosing this configuration, we recommend checking the required digging depth, horizontal reach, attachment weight, bucket capacity, and machine stability together. These factors help determine whether an 18-meter setup is appropriate for your project.

Reach the Required Work Area

Deep Excavation and River Maintenance

A longer boom can help operators reach areas that are difficult to access with a standard configuration. Typical applications include river dredging, channel widening, drainage works, pond excavation, and water conservancy projects. The excavator can work from a suitable bank or platform when site conditions allow, reducing the need to move the machine into difficult terrain.

Slope Shaping and Restricted Sites

For road embankments, drainage channels, and sloped ground, an extended boom provides a greater working radius for trimming and material removal. It can also help with excavation in areas where machine repositioning is limited. Actual reach and digging depth depend on the boom and arm geometry, bucket configuration, ground level, and machine setup.

Check the CAT 320 Setup

Before manufacturing, we recommend confirming the exact CAT 320 model, machine serial number, existing mounting dimensions, pin diameters, hydraulic connections, and required working range. Model names alone may not be enough to confirm fitment across different production versions or machine configurations.

For this 18m Long Reach Excavator Boom for CAT 320, we can review the required dimensions and application details before confirming the design. The boom, arm, bucket, and hydraulic arrangement should be considered as a complete working system rather than selecting the boom length alone.

What to Confirm Before Ordering

• Machine details: CAT 320 version, serial number, and current attachment configuration.
• Working range: Required maximum digging depth, horizontal reach, and excavation profile.
• Attachment selection: Bucket type, bucket capacity, and expected material density.
• Hydraulic arrangement: Cylinder geometry, hose routing, connection points, and operating requirements.
• Site conditions: Ground stability, slope angle, water depth, and available working space.

Structural Design and Fabrication

Q355B Steel Structure

We use Q355B high-strength low-alloy steel for the boom structure specified for this product. Material selection is important because an extended boom experiences bending loads during digging and material handling. Plate thickness, reinforcement layout, weld design, and the intended duty cycle must all be considered during engineering.

Welding and Reinforcement

Our manufacturing process can incorporate robotic welding where suitable, together with reinforcement in key load-bearing areas. We focus on weld consistency, structural alignment, and inspection of critical joints. The final welding and reinforcement plan depends on the approved design and the requirements of the specific machine configuration.

Surface Preparation

Sandblasting and surface coating help protect the steel against corrosion during outdoor use. For projects involving frequent contact with water, mud, or humid environments, we recommend discussing the operating conditions with our team so the coating system and maintenance requirements can be evaluated appropriately.

Technical Specifications

The working figures above should be verified against the final approved drawing and load information before purchase and operation. Maximum reach, digging depth, and permitted load may not be achievable simultaneously. We can confirm the applicable specifications after reviewing your excavator details and intended application.

Thailand River Regulation Project

In 2025, we supplied five customized 18-meter long reach booms for a river regulation project in Bangkok, Thailand. The work involved deep-water dredging, channel widening, and slope consolidation. The contractor needed a longer working range to access sections of the river that were difficult to reach with standard booms.

According to the project information provided, the customized equipment helped the team reach more of the target work area and improve its dredging workflow. The reported daily dredging capacity increased by 40%, and the project was completed 15 days ahead of schedule. These results relate to the reported project conditions; actual productivity will vary with soil type, water depth, bucket selection, operator practice, and site layout.

This project illustrates why we discuss the worksite and target operating range before recommending a boom. For similar river, drainage, or municipal projects, we can review the application details and advise on the information needed for a suitable configuration.

Ordering and Technical Support

XINGCHUANG manufactures excavator attachments and supports project-specific configurations. We hold CE certification, and customers can contact us to confirm the applicable certificate and product documentation for their order.

To request a quotation, please provide the excavator model and serial number, required boom length, target digging depth, operating radius, bucket details, and a brief description of the working environment. Drawings or photographs of the existing mounting points are also helpful when available.

We will review the supplied information before confirming compatibility, specifications, production arrangements, and delivery time. Customization, installation guidance, export documentation, and after-sales technical support can be discussed as part of the order.

Frequently Asked Questions

Can an 18-meter boom work with the bucket already used on my CAT 320?

Not in every case. Bucket weight, capacity, mounting dimensions, and the material being handled affect the working load. We recommend confirming the bucket specification with us before ordering so the boom configuration can be assessed as a complete setup.

Can I use this boom for underwater dredging?

It may be suitable for river and waterway maintenance when the machine position, water depth, soil conditions, and attachment configuration are appropriate. An extended boom does not make the excavator waterproof or remove the need to assess bank stability and operating safety. Please share the approximate water depth and site conditions for a more relevant configuration review.

Will the longer boom reduce digging force?

A longer working distance changes the leverage and load acting on the excavator. Available digging force and permitted load therefore depend on the final geometry, bucket, hydraulic system, and operating position. We do not recommend assuming that the standard boom's performance will remain unchanged; the intended working range and load requirements should be reviewed before use.

What information is needed for a customized quotation?

Please provide the CAT 320 model and serial number, requested boom length, target digging depth and radius, bucket details, project application, and delivery destination. Existing attachment drawings or mounting measurements can help us assess fitment and prepare a more accurate quotation.

How should the boom be maintained in river or humid environments?

Inspect the boom, weld areas, pins, bushings, hydraulic lines, and protective coating at intervals appropriate to the working conditions. Remove accumulated mud and debris, repair damaged coating, and address unusual movement or visible cracking before continuing operation. In wet or abrasive environments, inspection frequency should reflect the actual severity of the work.

Can you provide CE documents and export support?

We can discuss the available CE documentation and export requirements for the order. Please confirm which documents are required by your destination market before purchase, as certification scope and import requirements can vary by product configuration and country.