Used Excavator Boom for Construction Equipment

Excavator boom: function and challenges

The boom is the primary arm of the attachment: pivoted on the turret at its foot, it carries the stick and bucket at its end. This welded steel box withstands the bending and twisting forces of each digging, lifting, and rotating cycle. Known stress points include: welds around the cylinder ears, bores of the boom foot and head, and box reinforcements. A used boom from the original manufacturer restores the geometry and strength specified for your excavator, without manufacturer lead times.

One-piece, offset, or two-piece booms

• One-piece boom: the most common setup on tracked excavators, robust and easy to maintain.
• Offset boom: laterally shifts the stick to work alongside walls or edges, frequently used on mini and compact excavators.
• Two-piece boom: hinged in the middle, it extends the working range for wheeled excavators in urban settings.
• Mini excavator boom: often paired with a pivoting foot, like our used Kubota boom.

Used boom or excavator stick?

The two parts are often confused. The boom connects the turret to the stick; the stick connects the boom to the bucket. Their wear typically occurs together on machines heavily used in earthmoving, and play in the linkage pins often affects both parts. To replace the next part, consult our used Caterpillar sticks or used Liebherr sticks. Our advisors will verify compatibility with you.

Inspections carried out before sale

• Inspection of box welds along the entire length for cracks or repairs.
• Checking the bores of the boom foot and head, as well as the condition of bushings.
• Examining cylinder attachment ears on the boom and stick.
• Verifying straightness to exclude twisted or warped booms.
• Checking hose supports and hydraulic line passages.

Choosing a boom compatible with your equipment

The excavator brand, model, and serial number are the starting point. Then compare the diameter and spacing of the boom foot pins, the position of cylinder ears, and the effective length, which determines reach and digging depth. Some manufacturers have changed these dimensions from one generation to another without changing the model name. The boom weight also matters: a heavier part affects the machine's stability and lifting capacity.

Cylinders and equipment associated with the boom

• Our sub-range of used boom cylinders, all brands.
• Used Caterpillar boom cylinders and Liebherr boom cylinders.
• Komatsu boom cylinders and Volvo boom cylinders.
• Used digging buckets, to check alongside the boom.

Used booms by brand

Our booms come from excavators of the main manufacturers: Caterpillar, Komatsu, Volvo, Liebherr, Kubota or Case. Stock evolves as machines are dismantled: if your model is not listed, call us at 05 53 96 16 43 with its serial number. Codimatra sells exclusively professional equipment, inspected by its own teams, not private listings.

Why choose Codimatra for your boom

• Original booms sourced from selected and dismantled equipment in our workshop.
• Workshop inspection of welds, bores and straightness before shipping.
• Technical advice to compare your excavator’s dimensions with available parts.
• Shipping by carrier specialized in heavy parts, in France and internationally.