Heavy-Duty Excavator Attachments & Linkages
In the mining and heavy construction industries, equipment failure is not an option. Excavator buckets, booms, and sticks endure extreme torsional stress, massive impact loads, and constant severe abrasion. Building these components requires deep expertise in handling high-strength, wear-resistant steel.
Openex acts as a tier-one contract manufacturer for heavy earthmoving OEMs. From massive 50-ton face shovel buckets for open-pit mining to long-reach excavator booms, our 180-acre facility is equipped to cut, form, weld, and machine the toughest heavy equipment assemblies on the planet.
Manufacturing Specifications
We custom manufacture heavy earthmoving components directly to your CAD models and blueprints. Below are our general facility capabilities:
| Max Assembly Weight | Up to 150+ Tons |
|---|---|
| Primary Materials | Hardox® (400/450/500), AR400/AR500, Weldox, Q345, HSLA Steels |
| Welding Standards | AWS D1.1 Heavy Multi-pass SAW & FCAW, 100% UT/MT tested welds |
| Machining Tolerances | Precision Line Boring for pivot pins, facing for mounting brackets |
| Surface Finishing | Steel grit blasting (Sa 2.5) and heavy-duty epoxy/polyurethane industrial coating |
Heavy Equipment Fabrication
Our Manufacturing Process
We utilize heavy-duty plasma/laser cutters to profile AR500 and Hardox plates. Our 3000T press brakes and heavy plate rollers easily form the thick, curved bucket shells and reinforced boom structures.
Because these parts face massive impact loads, weld integrity is paramount. Our AWS-certified welders execute deep-penetration, multi-pass welds, attaching critical wear plates, lip shrouds, and internal gussets.
Heavy welding introduces severe internal stress. We place the massive welded booms and buckets into our industrial furnaces for Post-Weld Heat Treatment to prevent cracking and fatigue in the field.
Finally, we use our large floor-type boring mills to perfectly align and machine the pivot pin holes (line boring) and mounting bracket faces, ensuring flawless assembly onto the excavator.