PC1250 Excavator Long Reach Boom | Ultra Heavy-Duty Extended Arm for Mining & Large-Scale Projects

EXCAVATOR LONG REACH ARM & BOOM

Material: Q355B

Cylinder: Original size

Boom: OEM

Arm: OEM

Bucket: 0.4 CBM

Primer/Coating: Spray-coated zinc-rich primer

▎PRODUCT DESCRIPTION

The PC1250 Long Reach Boom is an ultra heavy-duty excavator attachment specifically designed for Komatsu PC1250 (100+ ton class) machines, developed to handle extreme working conditions in mining, large earthmoving, and long-distance excavation projects.

This long reach boom significantly extends the operating radius and digging depth of the excavator, enabling efficient operation in open-pit mining, large reservoir excavation, tailings management, slope shaping, and bulk material handling where standard configurations are insufficient.

Engineered with optimized large-section geometry and manufactured from high-strength structural steel, the boom delivers exceptional rigidity and resistance to deformation under heavy load conditions. Critical stress zones are reinforced to withstand continuous high-load operation and prolonged working cycles.

Each PC1250 long reach arm is fully customized, considering machine balance, hydraulic performance, and project-specific requirements, providing a reliable and safe solution for ultra-large excavator applications.

 ▎CONFIGURATION SITUATION

▎STEEL CUTTING

The incision is flat to ensure the accuracy of cutting steel plates

 ▎GROOVE WELDING

Before welding, we have use big edge milling machine mill(taper process) the edge of the sheet. So the welding can go to the internal of the steel-sheet and make the structure have higher performance.

Orbital welding machines are used for welding, and manual strengthening and welding are performed at corners and reinforcements.

Our boom and arm are large-welded box structure and thick or multi-plates for high-stress areas.

Also the inside have strength plate make it more stronger.

 ▎LARGE BORING MACHINE -- BUTT BORING

The processing efficiency is higher, the precision is better, and the product quality and labor efficiency are greatly improved.

 ▎SURFACE TREATMENT OF WORKPIECE--SHOT BLAST 

The small steel balls of the large shot blasting machine are used to hit the surface of the workpiece to remove the rust and small impurities on the surface of the steel plate, so that the surface of the workpiece presents the original metallic luster and increases the adhesion of the primer.

 ▎PRIMER AND PAINT TREATMENTS

Spray with the same paint as the brand excavator factory to ensure consistent color.

 ▎HIGH PRESSURE HARD PIPE & PIPELINE BENDING TREATMENT

1. Friction welded flange and oil cylinder - use machine high-speed friction welding, which has higher efficiency and avoids artificial false welding and air bubbles.

2. Automatic pipe bending machine - use numerical control to control the degree of bending of the pipeline, and automatically bend the seamless steel pipe, with higher precision.

 ▎PAINT / PACKAGING / TRANSPORTATION SERVICES

1.The color paint is consistent with the brand excavator factory (customizable color), using high-quality paint to make the product more delicate and beautiful.

2. We use stretch film to package the product. (Three-plywood wooden frame needs to be noted)

3. We have cooperated with many shipping companies in China for many years,and the transportation service and efficiency are very good. (Recommend FOB/CIF/CNF)

 ▎CERTIFICATTES & FACTORY HISTORY

We were originally affiliated to a Singaporean private factory in China. We have always only served the excavator industry and have a lot of data and manufacturing experience. Provide professional excavator accessories for dealers in many countries around the world.We insist on quality first, and deal with details so that brand dealers appoint us as partners.

（Information and photos are not displayed to protect the privacy of customers）

1, Long reach boom are use for dredging rivers port construction, railway construction and groundwork construction, with high extensive operation scope, high efficiency and high security.
2, Our company was founded in 2008 with more than 10 years of experience, production line engineers have more than 10 years of data and experience for all brands of excavators designed and customized long range booms.
3, Applicable for all the excavator model,OEM service is also available.
4, Advanced manufacturing process, Technique is in the line with global standards.
5, We have all the installation dimensions of most excavator, we can customize this long reach boom for your excavator.
6, Before welding, we have use big edge milling machine mill(taper process) the edge of the sheet. So the welding can go to the internal of the steel-sheet and make the structure have higher performance. Also the inside have strength plate make it more stronger.
7, If necessary, extra pipeline can be added to suit to some extra application.
8, Stick cylinder of the long boom, can use your original stick cylinder to save the cost, if you need the stick cylinder, we also can prepare for you.
9, Some parts can be consolidated using thicker plate or overlapping another plate  for heavy-duty application.
10, Welding is protective-gas welding, the protective gas is 80% Argon and 20% CO2 mixed. This is golden standard for protective gas. 
11, Before welding, we have use big edge milling machine mill the edge of the sheet. So the welding can go to the internal of the steel-sheet and make the structure have higher performance.
12 .We can customize the arm for all kinds of excavator as per your request. Just let me know your request. 
13. If you need, some parts can be consolidated using thicker plate or overlapping another plate for heavy-duty application, just let me know.
14. Not make the bucket for this extender arm as customer request. But if you need us prepare the bucket for you