Long Reach Excavator Arm for CAT 320

The Long Reach Excavator Arm for CAT 320 is specially developed for CAT 320 crawler excavators to expand operating depth and working distance beyond the limitations of standard factory sticks. It is designed for projects requiring deeper excavation, wider operating coverage, and improved construction flexibility.

Unlike conventional long reach arms made with lightweight low-carbon steel, this product uses 16–25mm Q355B high-strength wear-resistant steel plates for the main structure. The upgraded material configuration improves load-bearing performance and helps prevent deformation during continuous excavation operations.

All welding seams are completed by six-axis automatic welding robots with full penetration welding technology, followed by high-temperature stress relief treatment to reduce internal material stress. CNC boring machining is applied to all pin holes to maintain accurate concentricity, minimizing wear between pins and sleeves during repeated movement.

The surface treatment process includes sandblasting, two layers of anti-rust primer, and finishing paint. This multi-layer protection system improves resistance against mud, moisture, coastal conditions, and water-rich construction environments, helping maintain stable performance during outdoor projects.

With an independent production workshop and complete inspection procedures, we control quality from raw material selection to finished product testing. Each long reach arm undergoes load testing before shipment to ensure reliable performance for heavy-duty engineering applications.

Product parameters

Real Application Cases & Industry Scenarios

Malaysia River Regulation Project – Deep Dredging Efficiency Improvement

A Malaysian river regulation contractor purchased 4 sets of Long Reach Excavator Arm for CAT 320 for urban river sediment cleaning operations. The original standard arm was limited to approximately 6 meters working depth, which affected construction progress in deeper river sections.

After adopting the extended arm solution, the excavator achieved around 9.5 meters of dredging depth, reducing the overall project construction period by about 30% and improving operation efficiency without additional temporary platforms.

Australia Municipal Road Project – Long-Distance Slope Shaping

In an Australian municipal road slope trimming project, the Long Reach Excavator Arm for CAT 320 was used for high and distant slope shaping operations. The extended working range allowed the construction team to complete difficult areas without building temporary access platforms, reducing labor requirements and equipment rental expenses.

Domestic Lake Renovation Project – Customized Ultra-Long Version

For an inland lake renovation project, we provided a customized 16-meter ultra-long version for large-area sediment removal. Before shipment, the equipment completed a 24-hour continuous load test to verify structural strength and operational stability.

Suitable for Multiple Engineering Applications

The Long Reach Excavator Arm for CAT 320 is widely applied in municipal engineering, water conservancy construction, port maintenance, farmland pond renovation, highway slope repair, and wasteland leveling projects. With matched pins and hydraulic pipelines installed according to the operation manual, the attachment can be quickly mounted without modification to the CAT 320 main pump or main valve system.

User Pain Point Solutions

Reinforced Design Against Heavy Load Deformation

Low-cost generic long reach arms often suffer from bending problems during continuous heavy excavation. The Long Reach Excavator Arm for CAT 320 improves structural strength by adding reinforced ribs at key stress areas such as the cylinder mounting section and arm base, helping maintain stability under repeated loading conditions.

Precision Machined Connection Parts for Reduced Wear

To improve durability at high-frequency movement points, the pin holes are processed through integral boring technology and equipped with high-hardness alloy steel sleeves. This design reduces friction loss, improves fitting accuracy, and extends the service life of connecting components.

Enhanced Surface Protection for Outdoor Environments

The arm surface undergoes complete sandblasting treatment before coating to remove rust and impurities, improving coating adhesion and corrosion resistance. This helps the equipment maintain reliable performance in humid, coastal, and outdoor construction environments.

Factory Manufacturing and Quality Verification

With 12 years of experience in CAT series excavator extended attachment manufacturing, we provide stable production and export services for global customers. Each finished arm can be supplied with factory images, inspection videos, and load test records to support project verification and quality confirmation.

FAQ

1. Q: Does Long Reach Excavator Arm for CAT 320 need to modify the main machine hydraulic system?

A: No modification required. Our arm matches original CAT320 hydraulic pipeline interface perfectly, plug and play after installing matched hoses and pins.

2. Q: Can I customize the total extended length of this CAT320 long arm?

A: Yes, we support custom length from 10m to 18m according to your construction depth and radius demand.

3. Q: What is the warranty period of your excavator long reach arm?

A: Core welding structure offers 12-month factory warranty; wearing parts like pins and sleeves follow normal consumable replacement rules.

4. Q: Can you provide factory inspection video and load test data before shipment?

A: Sure, we support real-time factory shooting, finished arm load test videos and written test reports for every order.

5. Q: Is bulk order discount available for contractors and machinery distributors?

A: Yes, we offer tiered price discount based on order quantity, contact us to get exclusive wholesale quote.

Customized Long Reach Excavator Arm Solutions

Tailored Configuration for CAT 320 Applications

For construction companies, equipment rental providers, and machinery distributors, we provide customized Long Reach Excavator Arm for CAT 320 according to different project requirements. Services include arm length adjustment, surface color customization, and matching accessories to ensure better compatibility with specific working conditions.

Complete Support from Order Confirmation to Installation

We provide sample confirmation before bulk production, detailed installation manuals, and remote technical assistance to help customers complete installation and operation efficiently. Core welding structures are covered by a 12-month warranty for reliable long-term use.

Factory Supply with Flexible Global Delivery

Contact our team to receive product drawings, testing documents, and factory quotations. For large-volume orders, we offer competitive pricing and flexible shipping solutions to major global ports, helping customers optimize attachment procurement costs.