Enstruc standard excavator booms and arms are engineered for general construction applications such as digging, trenching, backfilling, and lifting. Built to match or exceed OEM specifications, our assemblies offer reliable performance as direct-fit replacements for damaged, worn, or outdated components.
We manufacture replacement excavator booms and dipper arms for construction-class machines from 13 to 50 tonnes, supporting a wide range of models across all leading OEMS. Boom and arm sets are fabricated from high-tensile, wear-resistant steel and welded using robotic processes to ensure strength, alignment, and long service life. Our assemblies are delivered ready to install, complete with hydraulic lines, bucket cylinder, pins, and linkage components.
The boom and arm (or dipper) form the primary working linkage of an excavator, enabling it to reach, lift, dig, and position loads. The boom provides vertical lift and reach, while the arm controls the forward digging motion and depth. Together, they allow precise control during tasks such as trenching, material handling, grading, and loading. In construction applications, they are essential for delivering the required breakout force, working range, and productivity across general earthworks and civil projects.
We build assemblies for construction excavators in the 13–50 tonne range, including mid-sized and full-sized crawler excavators used in general construction.
We supply boom and arm assemblies compatible with:
Caterpillar: 313, 320, 325, 330, 336, 349
Komatsu: PC130, PC160, PC210, PC290, PC360, PC490
Hitachi: ZX130–ZX470
Volvo: EC140–EC480
Doosan / Develon, JCB, Case, Hyundai, and others
For quarry-sized machines, see our Quarry Excavator Booms
For extended-range applications, view our Long Reach Excavator Booms
Yes. We can modify our replacement excavator booms and arms to suit:
Tiltrotator systems
Hydraulic quick couplers
Auxiliary piping for breakers, shears, or compactors
Heavy-duty reinforcement for severe applications
Yes. Our standard kit includes the boom, dipper arm, hydraulic lines, bucket cylinder, pin kit, and linkage parts. Boom and dipper cylinders can be supplied upon request.
Yes. Before shipment, every boom and arm assembly undergoes rigorous quality control and non-destructive testing (NDT) to verify welds, structural integrity, and dimensional accuracy.
Yes. Enstruc delivers worldwide with full logistics coordination and technical support to assist with on-site installation and fitment.
