Excavator Boom for PC300

In heavy-duty mining and large-scale infrastructure projects, original old booms suffer from fast wear, insufficient rigidity, bending deformation, oil leakage and working vibration, resulting in delayed construction periods and high maintenance costs. Our upgraded Excavator Boom for PC300 is professionally optimized for the heavy-load pain points of Komatsu PC300 excavators. It perfectly matches the machine's tonnage, hydraulic flow and stress structure, and can directly replace the original boom without complicated modification. 

Compared with ordinary universal booms, this product enhances overall bearing rigidity and fatigue resistance, adapting to long-term and high-intensity continuous operation. It fundamentally improves the working stability and construction efficiency of PC300 excavators, reduces equipment failure rates and later maintenance costs, serving as an ideal replacement accessory for mining, infrastructure and earthwork projects.

Material & Professional Craftsmanship

High-Strength Q355NM Alloy Steel Construction

As a professional manufacturer with more than 10 years of experience in construction machinery structural parts production, we adopt national standard Q355NM high-strength wear-resistant alloy steel for the Excavator Boom for PC300 instead of ordinary low-cost carbon steel. This premium material provides excellent tensile strength, compression resistance, and low-temperature impact toughness, with 35% higher wear resistance and stronger deformation resistance than conventional steel. It is designed to withstand harsh working conditions including rock impact, heavy-load extrusion, and high-frequency vibration.

Advanced Robotic Welding & Reinforced Structure

The production process adopts full-automatic multi-layer robotic welding technology to achieve dense and uniform welds while eliminating false welding and reducing the risk of weld cracking. Key stress-bearing components, including the boom tube, hinge seat, and stress web, are thickened and integrally forged to enhance overall structural strength and stability.

Surface Protection & Quality Testing

Through sandblasting derusting, flaw detection, and double-layer anti-corrosion spraying treatment, the Excavator Boom for PC300 achieves excellent resistance against rust, corrosion, and impact, making it suitable for complex outdoor working environments. Each finished product passes static load tests, hydraulic pressure tests, and fatigue durability tests, ensuring reliable performance with complete and traceable quality data.

Application Scenarios & Usage Guide

Direct Replacement for Komatsu PC300 Excavators

The Excavator Boom for PC300 is fully compatible with Komatsu PC300 series models and can be installed without modification of the excavator hydraulic pipelines, main control system, or frame structure, significantly reducing equipment downtime during replacement.

Heavy-Duty Mining & Quarry Operations

It is widely used in open-pit mining, quarry loading, and large-scale earth backfilling projects. Under mining conditions, the reinforced boom provides stable power output for excavation, stripping, and transfer of large stones while maintaining excellent structural reliability.

Infrastructure Construction & Earthwork Projects

For high-rise foundation excavation, road and bridge reconstruction, river rock cleaning, and heavy-load material handling, this boom delivers stable and accurate operation with reduced vibration, helping improve construction precision and efficiency.

Long-Term Outdoor Equipment Applications

With superior wear and corrosion resistance, the product extends replacement cycles and reduces operating costs, making it suitable for engineering rental fleets and long-term on-site construction equipment.

Real Engineering Cases

Granite Mining Project in Sarawak, Malaysia

With stable quality and mature manufacturing technology, our Excavator Boom for PC300 has been exported in batches to more than 30 countries and regions across Southeast Asia, Africa, and Central Asia, supporting hundreds of mining and infrastructure projects worldwide.

In 2025, we supplied 20 sets of customized PC300 excavator booms for an open-pit granite mining project in Sarawak, Malaysia. The original standard booms frequently experienced deformation, cracking, and insufficient heavy-load performance, resulting in frequent maintenance shutdowns and delayed project progress.

After replacing them with our reinforced excavator booms, the equipment operated continuously for 6 months without failure. Heavy-load stability was significantly improved, maintenance frequency was reduced by 80%, and continuous mining operations were successfully maintained.

Domestic earthwork companies also conduct long-term batch procurement for equipment replacement and new machine matching, supporting spot supply and customized solutions according to different project requirements.

Product Advantages

Enhanced Load-Bearing Performance

Compared with standard PC300 booms available on the market, our products use thickened high-strength alloy plates and integrated forging structures to solve deformation problems under heavy loads, providing stronger bearing capacity for demanding applications.

Reliable Welding Quality

Automatic multi-layer welding technology combined with post-weld flaw detection eliminates manual welding defects and reduces the risk of cracking during long-term high-frequency operation.

Optimized Hydraulic Matching

The structure is precisely designed according to original PC300 hydraulic parameters, ensuring efficient power transmission without pressure loss, hydraulic stalling, or unstable operation.

Extended Service Life

Double-layer anti-corrosion and wear-resistant surface treatment significantly improves durability, providing approximately 1.5 times longer service life compared with ordinary replacement booms.

Factory Strength & Service Guarantee

Professional Manufacturing Capability

With more than 10 years of experience in R&D and production of excavator structural accessories, our factory operates standardized workshops, automatic welding production lines, and professional quality inspection laboratories with complete independent manufacturing and testing capabilities.

Customization & OEM Support

We support fast spot delivery, non-standard customization, and bulk OEM orders. Product structures and technical parameters can be optimized according to actual working intensity and application requirements.

Complete Technical Service

Our service includes one-on-one technical communication, free installation guidance, remote commissioning, lifelong technical consultation, complete customs clearance documents, and overseas logistics support.

Welcome global customers to consult, request samples, and visit our factory. Contact us today to receive professional recommendations and accurate quotations for your Excavator Boom for PC300 project.

Product Specifications

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Looking for high-quality Excavator Boom for PC300? Contact us now to get an accurate quote! Free sample request and factory tour are available, with exclusive discounts for bulk orders!

FAQ

Q1: Is this Excavator Boom for PC300 fully compatible with all Komatsu PC300 models? Is equipment modification required?

A1: This Excavator Boom for PC300 is specially developed for Komatsu PC300 series excavators, with installation dimensions, hinge points, hydraulic parameters, and stress structures designed according to original factory specifications. It provides excellent compatibility without modification of key components such as hydraulic pipelines, main control systems, or the excavator frame. The boom can be directly installed as a replacement part, helping reduce downtime and quickly restore equipment operation.

Q2: Will the boom deform, crack, or experience insufficient power under heavy mining conditions?

A2: The Excavator Boom for PC300 is designed for heavy-duty mining applications and provides excellent resistance against deformation and cracking. Manufactured from Q355NM high-strength wear-resistant alloy steel, the boom features reinforced stress-bearing areas and integrated forging technology for improved structural strength. Automatic multi-layer welding and factory non-destructive flaw detection help reduce welding defects and cracking risks. Meanwhile, the boom is precisely matched with the original hydraulic output of PC300 excavators, ensuring stable power transmission during heavy-load excavation and rock stripping operations without power loss or unstable performance.

Q3: Does the product support customization? What is the delivery time and stock availability?

A3: We provide customized solutions according to different working conditions and customer requirements, including boom thickness, surface treatment, structural reinforcement, and adaptive parameters. Standard Excavator Boom for PC300 models are regularly available and can be delivered within 3–7 working days. Customized orders generally require 7–15 working days depending on technical requirements. For overseas bulk orders, priority production scheduling and progress updates are available to support project timelines.

Q4: What is the warranty period? What after-sales support is provided?

A4: We provide long-term quality assurance for the Excavator Boom for PC300. Under normal operating conditions, structural welds and main frame components are covered by warranty. For product issues caused by manufacturing defects or non-human factors, we provide maintenance support and replacement solutions. In addition, customers can receive lifelong technical consultation, installation guidance, commissioning support, and troubleshooting assistance throughout the product service life.

Q5: Do you support overseas export? Can complete export documents be provided?

A5: Yes. Our Excavator Boom for PC300 has been exported to more than 30 countries and regions, including Southeast Asia, Africa, and Central Asia. We support international trade terms such as FOB and CIF and can provide complete export documents, including quality inspection reports, factory certificates, packing lists, and customs declaration documents. We also assist with international logistics coordination to ensure safe and efficient delivery for global customers.